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| STK526 rev. b ............... ................. ................ ................. ................ ............. hardware user guide
STK526 rev. b hardware user guide 1 7709b?avr?07/08 section 1 introduction ................ ................ ................. ................ ................. ......... 1-2 1.1 overview ...................................................................................................1-2 1.2 STK526 - at90usb82/162 starter kit features.......................................1-3 section 2 using the STK526............... .............. ............... .............. .............. ......... 2-5 2.1 overview ...................................................................................................2-5 2.2 power supply ............................................................................................2-6 2.3 reset ......... ................. ................ ................ ................ ................ ..........2-10 2.4 at90usb82/162 avr microcontroller ....................................................2-11 2.5 serial links .............................................................................................2-11 2.6 on-board resource s...............................................................................2-15 2.7 stk500 resources ............................. ....................................................2-17 2.8 in-system programming .................. .......................................................2-18 2.9 debugging...............................................................................................2-22 2.10 test points ..............................................................................................2-23 2.11 configuration pads .................................................................................2-24 2.12 solder pads ............................................................................................2-25 section 3 troubleshooting guide .......... ................ ................. ................ ............ 3-26 section 4 technical specifications ..... .............. ............... .............. .............. ....... 4-28 section 5 technical support ............... .............. ............... .............. .............. ....... 5-29 section 6 complete schematics ............ ................ ................. ................ ............ 6-30 6.1 document revision history.....................................................................6-38 6.2 7709b......................................................................................................6-38 STK526 rev. b hardware user guide 1-2 7709b?avr?07/08 section 1 introduction congratulation for acquiring the avr? STK526 - at90usb82/162 starter kit. this kit is designed to give designers a quick start to develop code on the at90usb82/162 and for prototyping and testing of new designs. 1.1 overview this document describes the STK526 dedicated to the at90usb82/162 avr microcontroller. this board is designed to allo w an easy evaluation of the product using demonstration software. this document applies to the revision b of the board. to complement the evaluation and enable additional devel opment capability, the STK526 can be plugged into the atmel stk500 starter kit board in order to use the at90usb82/162 with advanced fe atures such as variable vcc, variable xtal, parallel programming, and supports all avr development tools. it can also receive extension modules that atmel or 3 rd parties may release in future or that customers can develop for their projects. to increase its demonstrativ e capabilities, this stand al one board has se veral on-board resources : usb, rs232, jo ystick, data-flash, leds. introduction STK526 rev. b hardware user guide 1-3 7709b?avr?07/08 figure 1-1 . STK526 board 1.2 STK526 - at90usb82/162 starter kit features the STK526 rev. b provides the following features: ? at90usb82/162 tqfp device (2.7v STK526 rev. b hardware user guide 2-5 7709b?avr?07/08 section 2 using the STK526 this chapter describes the board and all its features. 2.1 overview figure 2-1 . STK526 overview usb rs232 spi / debugwire power crystal joystick reset hardware boot leds dataflash vcc source 3v3 reg using the STK526 2-6 STK526 rev. b hardware user guide 7709b?avr?07/08 ext (jack) vbus stk500 5v 3v3 at90usbxx2 vsource (vcc source) internal 3v3 100ma regulator (1) (2) uvcc vcc ucap noreg intreg reg5v reg3v3 vbus stk (3v3 reg) power-on 1f 2.2 power supply the on-board power supply circuitry allows different power supply configurations. because the at90usb82/162 contains an internal 3v3 regulator that can be used to power an external circuitry, several power configurations are handled by the STK526. the power path is represented by the figure below : figure 2-2 . STK526 power configuration first, the board allows to drain power from three external sources, leading to four different solutions. the selected voltage is applied to the regulator input of the at90usb82/162. then the user can choose to power the mcu i/o either directly with the primary power source (external 5v/3v3), or from the internal regulator itself (mcu auto-power). 2.2.1 power supply sources the power supply can come from three different (1) sources: ? usb connector, ? jack pwr connector (j5, see figure 2-3), ? stk500 usb powered: when used as a usb device bus powered app lication, the STK526 can be powered via the usb vbus power supply line. jack pwr connector: ? use the jack outlet provided with the kit (see figure 2-4) ? input supply from 9 up to 15v (2) dc, ? no specific polarization (3) is required. using the STK526 STK526 rev. b hardware user guide 2-7 7709b?avr?07/08 figure 2-3 . jack pwr connector (j6) figure 2-4 . male jack outlet and wires stk500 powered: (c.f. ?stk500 resources? on page 17 ). notes: 1. caution : do not set more than one power supply source on STK526. 2. 15v is the maximum level limitation of an unidirectional transit diode. 3. there is a diode (bridge) voltage drop bet ween the negative output of the power supply and the STK526 ?gnd?. this coul d introduce some gap of voltage during measurement and instrumentation. + - using the STK526 2-8 STK526 rev. b hardware user guide 7709b?avr?07/08 2.2.2 power source setting table 2-1 . power supply (1) setting notes: 1. caution: the stk500 has its own ?on/off? switch vcc source jumper position vcc power supply value comments view vbus vbus (4,8v to 5.2v) this is the default configuration. this should be used for a typical usb device ?bus powered? application. in this mode, the STK526 is powered directly from the usb bus, and no other external power supply is required. reg 5v 5v this configuration can be used for a usb ?self powered? device application?. to use this configuration an external power supply must be connected to j5 connector. the on-board 5v regulator is used. reg 3v3 3.3v this configuration allows the STK526 to be used in a 3v range application. to use this configuration an external power supply must be connected to j5 connector. the on-board 3v3 regulator is used. stk & reg 5v depends on stk500 vtg setting this configuration allows the STK526 to be used with an stk500 board. in this mode, the STK526 power supply is generated and configured according to the ?vtg? parameter of the stk500 (1). caution : no external power supply must be connected to STK526 to avoid conflict with stk500 power supply. vcc source reg 5 reg 3.3 vbus 5 stk vcc source reg 5 reg 3.3 vbus 5 stk vcc source reg 5 reg 3.3 vbus 5 stk vcc source reg 5 reg 3.3 vbus 5 stk using the STK526 STK526 rev. b hardware user guide 2-9 7709b?avr?07/08 2.2.3 at90usb82/162 power configuration settings this section applies to the following part of the power path diagram : figure 2-5 . mcu power configurations once the power source selected, the input of the at90usb82/162 internal regulator (uvcc) is powered. firmware has the responsabilit y to enable or di sable the regulator. ucap is the output pin of the internal regulato r, and vcc is the core power input of the mcu. several cases may be required by the user : ? vsource = 5v, vcc = 5v : for this mode, the configuration switch (see figure above) must be in the position labelled ? noreg ?. the mcu can still run a usb device application if it enables t he internal regulator that will power the usb pad and macro. ? vsource = 5v, vcc = 3.3v : for this mode, the configurat ion switch must be in the position labelled ? intreg ?. the vcc pin will be tied to the regulator output, so that the at90usb82/162 itself will power itself from its regulator, and the i/o will be at 3v3 level. ? vsource = 3.3v, vcc = 3.3v : for this mode all the mcu power inputs are at the 3v3 level. the configuration switch must be in the position ? noreg ?. in normal operation it is recommended to tie all the power pins together (uvcc, vcc, ucap) and to disable the regulator. however, the board configuration does not allow to tie together all the power pins, so that the regulator must be enabled by firmware in order to power the usb pad and macro (that can lead to some extra-consumption). table 2-2 . mcu power configuration jumpers at90usbxx2 vsource ) internal 3v3 100ma regulator (1) (2) uvcc vcc ucap noreg intreg (3v3 reg) power-on 1f ?3v3 reg? jumper position at90usb16 i/o power supply comments view ?noreg? primary power source this is the default configuration. ?intreg? internal regulator this configuration is relevant with a 5v primary powered application requiring i/o levels at 3.3v on the at90usb82/162. 3v3 reg noreg intreg 3v3 reg noreg intreg using the STK526 2-10 STK526 rev. b hardware user guide 7709b?avr?07/08 2.2.4 ?power-on? led the power-on led is lit whenever power is applied to STK526 regardless of the power supply source and the voltage settings. figure 2-6 . ?vcc-on? led 2.3 reset although the at90usb82/162 has its on-c hip reset circuitry (c.f. at90usb82/162 datasheet, section ?system control and reset), the STK526 provides the at90usb82/162 a reset signal which can come from 3 different sources: 2.3.1 power-on reset the power supply rise will conduc e to an on-chip power-on reset. 2.3.2 reset push button by pressing the reset push button on the STK526, a warm reset of the at90usb82/162 is performed. figure 2-7 . reset push button (rst) implementation 2.3.3 stk500 reset see section 2.7.4, page 18. using the STK526 STK526 rev. b hardware user guide 2-11 7709b?avr?07/08 2.4 at90usb82/162 avr microcontroller 2.4.1 main clock xtal to use the usb interface of the at90usbx xx, the clock source should always be a crystal or external clock o scillator (the in ternal 8mhz rc oscillator is not accurate enough to comply with the us b specification). only the following crystal frequency allows proper usb operations: 8mhz and 16mhz. the STK526 comes with a default 8mhz crystal oscillator. if STK526 is connected to an stk500 and the jumpers ?stkx1? and ?stkx2? are set, the STK526 microcontroller operates with the ?stk500 osc? frequency parameter. the stk500 clock prevails over the STK526 crystal. figure 2-8 . stkx1 and stkx2 jumpers on STK526 2.4.2 analog power supply avcc avcc is tied to vcc by hardware. 2.5 serial links 2.5.1 usb the STK526 is supplied with a standard usb type-b receptacle (identifying the board as a device only) that aims to receive a b-plug figure 2-9 . usb type-b receptacle using the STK526 2-12 STK526 rev. b hardware user guide 7709b?avr?07/08 vbus detection the board also implements a vbus detection on a generic i/o. a low-power (50a) voltage divider (/2) is connected from vbu s to portc bit 2 pin. the vbus presence is detected with a high level on the mcu pin. vbus power source moreover, even if not selected as primary power source, vbus powers the on-board 3.3v regulator (through a diode to avoid curr ent being supplied to usb host) in order to get 3v3 voltage in any condition (this allows to power the dataflash at any time, or to allow a usb bus-powered operation with all the board at 3.3v. however, this feature can make current flowing from vbus to some board peripherals even if an alternate power source is us ed to power the board. that may lead to unwanted extra-consumpt ion, so it can be disabled by cutting the configuration pad. figure 2-10 . configuration pad location note: see section ?configuration pads?, page 24 for details. using the STK526 STK526 rev. b hardware user guide 2-13 7709b?avr?07/08 2.5.2 rs-232c the at90usb82/162 is a microcontroller with an on-chip usart peripheral (usart1). only the asynchronous mode is supported by the STK526. the STK526 is supplied with a rs-232 driv er/receiver. one female db9 connector provides the rs-232 connections. figure 2-11 . rs-232 db9 connections figure 2-12 . typical pc connection layout 1 rs-232 db9 front view pin 2 5 6 9 2 3 4 7 8 rs-txd pin 3 rs-rxd pin 4 pin 6 pin 5 gnd pin 7 rs-cts pin 8 rs-rts STK526 / rs-232 db9 pc / db9 serial port pin no (com1 or comx) function pin no function 2 txd (at90usbxxx) 5 gnd 2 3 rxd (pc) txd (pc) 3 rxd (at90usbxxx) 5 gnd 7 cts (at90usbxxx) 7 8 rts (pc) cts (pc) 8 rts ( at90usbxxx ) if hardware data flow control using the STK526 2-14 STK526 rev. b hardware user guide 7709b?avr?07/08 the STK526 usart implementation allows an optional hardware flow control that can be enabled thanks to sp2, sp3, sp4, sp5 solder pads. figure 2-13 . usart schematic note that the usart peripheral of t he at90usb82/162 includes an automatic hardware flow control feature that make s the operation transparent for the user. table 2-3 . uart settings note: 1. tx reference: STK526 source , rx reference: STK526 destination figure 2-14 . rs232 solder pad location mode solder pads configuration db9 connection (1) software data flow control (default configuration) sp2: open sp3: open sp4: open sp5: open tx rx pin 2 pin 3 optional hardware flow control sp2: close sp3: close sp4: close sp5: close tx rx cts rts pin 2 pin 3 pin 7 pin 8 5 9 4 8 3 7 2 6 1 10 11 p1 sub-d9 female rs232 vcc ct s c13 100nf rt s . 11 . 12 . 10 . 9 . 8 . 7 . 13 . 14 . 15 . 16 c1+ 1 v+ 2 c1- 3 c2+ 4 c2- 5 v- 6 rs 232 ttl gnd vcc u3 max3232 rs232 b uffer c10 100nf c9 100nf c11 100nf c12 100nf rxd pd2 decoupling capacitor close to the device rs-t xd rs-rxd pd[7..0] vcc sp4 sp5 pd7 pd6 pd3 txd sp3 rs-ct s sp2 rs-rt s sp2 sp3 sp4 sp5 sp2 sp3 sp4 sp5 using the STK526 STK526 rev. b hardware user guide 2-15 7709b?avr?07/08 2.6 on-board resources 2.6.1 joystick the 4+1 ways joystick is convenient for deve loping input device (usb) application: it can easily emulate mouse movements, keyboard inputs, etc. closing a switch causes the corresponding signal to be pu lled low, while releasing (not pressed) causes an h.z state on the signal . the user must enable internal pull-ups on the input pins, removing the need for an external pull-up resistors on the switch. figure 2-15 . joystick schematic figure 2-16 . joystick implementation 2.6.2 leds the STK526 includes 4 green leds implem ented on one line. they are connected to the low nibble of ?port d? of at90usb82/162 (portd[3..0]). to turn on one led, the corresponding port pin must drive a high level. to turn off one led, the corresponding port pin must dr ive a low level. it is the opposite method used in stk500. figure 2-17 . STK526 leds select 5 lef t 7 up 3 right 6 down 4 com1 1 com2 2 sw3 tpa511g pb[7..0] pb0 pb4 pb5 pb6 pb7 select 5 lef t 7 up 3 right 6 down 4 com1 1 com2 2 sw3 tpa511g pb[7..0] select 5 lef t 7 up 3 right 6 down 4 com1 1 com2 2 sw3 tpa511g pb[7..0] p using the STK526 2-16 STK526 rev. b hardware user guide 7709b?avr?07/08 figure 2-18 . leds implementation schematic 2.6.3 data flash memory for usb mass-storage class demonstration purposes, the STK526 provides an on-chip serial flash memory (at45db642x) connected to the at90usb82/162 serial port interface (spi). the data-flash chip select signal is con nected to portc bit 2 of the at90usb82/162 (see figure 2-19). figure 2-19 . on-board data flash schematic although the dataflash is 3.3v powered, it withstands without problem 5v level signals. pd1 pd4 pd5 pd0 in-line grouped leds d0 topled lp m676 led 0 (green) d1 topled lp m676 led 1 (green) d2 topled lp m676 led 2 (green) d3 topled lp m676 led 3 (green) r1 1k r2 1k r3 1k r4 1k pd[7..0] 3.3v u9 at45db642d cason8 si 1 sck 2 reset 3 cs 4 wp 5 vcc 6 gnd 7 so 8 r123 47k pc2 c123 c8 100nf pb[7..0] r14 47k 3.3v pb3 r13 10k pb2 pb1 using the STK526 STK526 rev. b hardware user guide 2-17 7709b?avr?07/08 2.7 stk500 resources figure 2-20 . connecting STK526 to the stk500 board note: caution: do not mount an avr microcontroller on the stk500 board when STK526 is plugged on stk500. 2.7.1 supply voltage from stk500 the avr supply voltage coming from stk5 00 (vtg) can also be controlled from avr studio?. ? the supply voltage coming from stk500 is controlled by power supply circuitry of the STK526. refer to table 2-1 on page 8 to configure ?vcc source? jumper. 2.7.2 exp.con 0 & exp.con 1 connectors using the STK526 2-18 STK526 rev. b hardware user guide 7709b?avr?07/08 figure 2-21 . exp.con 0 and exp.con 1 connectors 2.7.3 main clock from stk500 the avr clock frequency (external) coming from stk500 (xt1/xt2) can also be controlled from avr studio?. ? ?stkx1? and ?stkx2? jumpers should be closed 2.7.4 reset from stk500 the avr reset coming from stk500 (nrst - exp.con 0) can also control the STK526. 2.8 in-system programming 2.8.1 programming with usb bootloader: dfu (device firmware upgrade) at90usb82/162 part comes with a default factory pre-programmed usb bootloader located in the on-chip boot section of the at90usb82/162. this is the easiest and fastest way to reprogram the device direct ly over the usb interface. the ?flip? pc- based application offers a flexible and us er friendly interface to reprogram the application over the usb bus. the hwb pin of the at90usb82/162 allows to force the bootloader execution after reset. (please refer to at90usb82/162 datasheet section ?bootloader support?). to force bootloader execution, operate as follows: ? press both ?rst? and ?hwb? push buttons ? first release the ?rst? push button ? then release the ?hwb? push button exp. con 1 gnd gnd 1 2 n.c. ( auxi0 ) n.c. ( auxo0 ) 3 4 n.c. ( ct7 ) n.c. ( ct6 ) 5 6 n.c. ( ct5 ) n.c. ( ct4 ) 7 8 n.c. ( ct3 ) n.c. ( ct2 ) 9 10 n.c. ( ct1 ) n.c. ( bsel2 ) 11 12 n.c. ref 13 14 nrst pg2 15 16 pg1 pg0 17 18 gnd gnd 19 20 pc7 pc6 23 24 vtg vtg 21 22 pc5 pc4 25 26 pc3 pc2 27 28 pc1 pc0 29 30 pa7 pa6 31 32 pa5 pa4 33 34 pa3 pa2 35 36 pa1 pa0 37 38 gnd gnd 39 40 gnd gnd 1 2 n.c. ( auxi1 ) n.c. ( auxo1 ) 3 4 n.c. ( data7 ) n.c. ( data6 ) 5 6 n.c. ( data5 ) n.c. ( data4 ) 7 8 n.c. ( data3 ) n.c. ( data2 ) 9 10 n.c. ( data1 ) n.c. ( data0 ) 11 12 n.c. ( si ) n.c. ( so ) 13 14 n.c. ( sck ) n.c. ( cs ) 15 16 xt1 xt2 17 18 vtg vtg 19 20 pb7 pb6 23 24 gnd gnd 21 22 pb5 pb4 25 26 pb3 pb2 27 28 pb1 pb0 29 30 pd7 pd6 31 32 pd5 pd4 33 34 pd3 pd2 35 36 pd1 pd0 37 38 gnd gnd 39 40 exp. con 0 top view using the STK526 STK526 rev. b hardware user guide 2-19 7709b?avr?07/08 for more information about the usb bootloader and flip software, please refer to the ?usb bootloader datasheet? and ?flip user manual?. 2.8.2 programming with av r isp mkii programmer the at90usb82/162 can be programmed through spi. this section explains how to connect the programmer. the flash, eeprom, all fuses and lock bits c an be programmed in dividually or with the sequential automatic programming option. note: the spien fuse must be enabled in at90usb82/162 to allow isp operation. the spien fuse is disabled when using debugwire channel (section ?debugging?, page 22) the avr isp mkii programmer is a compac t and easy-to-use in-system programming tool for developing applications with at90usb8 2/162. due to the small size, it is also an excellent tool for field upgrad es of existing applications. the avr isp programming interface is integrated in avr studio?. to program the device using avr isp progra mmer, connect the 6-wire cable on the isp connector of the STK526 as shown in figure 2-22. note: see avr studio? on-line help for information. figure 2-22 . programming from avr isp mkii programmer 2.8.3 programming with avr jtag ice using the STK526 2-20 STK526 rev. b hardware user guide 7709b?avr?07/08 the at90usb82/162 can be programmed usin g isp capability of the jtagice (using the connector adapter that comes with the programmer). this section explains how to connect and use the avr jtag ice. note: the spien fuse must be enabled in at90usb82/162 to allow isp operation. the spien fuse is disabled when using debugwire channel (section ?debugging?, page 22) figure 2-23 . connecting avr jtag ice to STK526 the flash, eeprom, all fuse and lo ck bit options isp-programmable can be programmed individually or with the sequ ential automatic programming option. note: see avr studio? on-line help for information. 2.8.4 programming with stk500 serial programming the at90usb82/162 can be programmed using the serial programming mode from stk500 firmware. the software interface (in-system programming of an external target system) is integrated in avr studio?. to program the device using isp from stk 500, connect the 6-wire cable between the isp6pin connector of the stk500 board an d the isp connector of the STK526 as shown in figure 2-20. see figure 2-20 to see connection example for isp with stk500. using the STK526 STK526 rev. b hardware user guide 2-21 7709b?avr?07/08 parallel high-voltage programming the STK526 is compatible with the parallel programming mode of the stk500. the embedded reset circuitr y supports the highv oltage pulses used during programming. once the STK526 is plugged into the stk500 expand connectors, the following configuration must be set before powering the boards : on the STK526 : ? set the primary power source ( vcc src jumper) to stk and reg 5v ? set the 3v3reg jumper to ?noreg? ? mount the jumper stkx1 to enable the stk500 clock signal on the stk500 : ? connect the prog_ctrl header (10 pts) to the portd header (10pts) ? connect the prog_data header (10 pts) to the portb header (10pts) ? mount the following jumpers : vtarget, reset, xtal1, bsel2 ? mount a jumper on the position 1-2 (= right side) of the oscsel header all the flash memory, eeprom, all fuse a nd lock bit can be pr ogrammed individually or with the sequential automatic programming option. figure 2-24 . connecting STK526 to stk500 fo r high voltage parallel programming using the STK526 2-22 STK526 rev. b hardware user guide 7709b?avr?07/08 figure 2-25 . STK526 configuration for parallel programming high voltage parallel programmi ng allows any operation on the device. this mode is very usefull if a crucial fuse has been erased inadvertently. for exam ple, if user disables the spien fuse from isp mode, it can only be restored using parallel programming. 2.9 debugging 2.9.1 debugging with avr jtag ice mkii every STK526 can be used for debugging with jtag ice mk ii using the debugwire protocol through the isp connector. connect the jtag ice mkii as shown in figure 2-23 (like for a simple programming operation), for debugging help, please refer to avr studio? help information. as at90usb82/162 parts are factory configured with the higher security level set, a chip erase operation will be performed on the part before debugging with jtag ice mk ii. thus the on-chip flash boot loader will be erased. it can be restored after the debug session using the bootloader hex file availa ble from atmel website or from the cd- rom included in the starter kit. note: starting a debugwire session will enable the dwen fuse and disable the spien fuse, that will prevent isp programming. avr studio? can restore the spien fuse before clos- ing a debugwire session. however the fuse bits can also be restored in parallel programming mode. using the STK526 STK526 rev. b hardware user guide 2-23 7709b?avr?07/08 2.10 test points there are 7 test points implemented, these test points are referred in the full schematics section. config. pads reference related signals function tp1 d+ usb d+ data line tp2 d- usb d- data line tp3 3.3v 3.3v on-board regulated power supply tp4 5v 5v on-board regulated power supply tp5 gnd ground (measure reference) tp6 vbus usb vbus power line tp121 ucap at90usb82/162 internal 3v3 regulator output using the STK526 2-24 STK526 rev. b hardware user guide 7709b?avr?07/08 2.11 configuration pads configuration pads are used to disconnect/connect on-board peripherals or elements, their default configuration is: connect . 2.11.1 configuration pads listing table 2-4 . configuration pads 2.11.2 configuration pads - disconnection figure 1. configuration pad - disconnection 2.11.3 configuration pads - connection figure 2. configuration pad - re-connection config. pads reference related signals function cp121 vbus connect vbus to the on-board 3v3 regulator. cut to avoid extra-consumption from usb (in self-powered application only). cut connection wire drop of solder using the STK526 STK526 rev. b hardware user guide 2-25 7709b?avr?07/08 2.12 solder pads solder pads are used to disconnect/connect on-board peripherals or elements, their default configuration is: disconnect . user may solder the pad to enable it. 2.12.1 solder pads listing table 2-5 . solder pads solder. pads reference related signals function sp4 pd7 / cts this solder pad allows to enable the logical cts signal for hardware control flow on rs232 interface. sp3 rs232 / cts this solder pad allows to enable the physical cts signal for hardware control flow on rs232 interface. sp5 pd6 / rts this solder pad allows to enable the logical rts signal for hardware control flow on rs232 interface. sp2 rs232 / rts this solder pad allows to enable the physical cts signal for hardware control flow on rs232 interface. STK526 rev. b hardware user guide 3-26 7709b?avr?07/08 section 3 troubleshooting guide figure 3-1 . troubleshooting guide problem reason solution the green ?power-on? led is not on no power supply verify the power supply source level verify the power supply source selector STK526 does not work connect the dc power supply source, or usb interface or stk500. the at90usb82/162 cannot be programmed stk500 configuration not respected. connect isp cable between stk500 and STK526. check parallel programming hardware configuration on both stk500 and STK526. the avr isp probe is not connected connect the avr isp 6-pin header to the correct STK526 isp header (page 19). take care of polarity. the avr jtag ice probe is not connected connect the jtag ice 10-pin header to the correct STK526 jtag header (page 19). take care of polarity. the memory lock bits are programmed erase the memory before programming the fuse bits are wrongly programmed check the fuse bits (spien, dwen if previous operation was debugging). programming too fast with isp spi check oscillator settings and make sure it is not set higher than spi clock avr studio does not detect the avr tool used rs232/usb cable is not connected, or power is off connect the rs232 cable (stk500 - avr isp) and check power connections connect the usb (jtag ice mkii, avr ispmkiil) and check power connections pc com port is in use disable other programs that are using pc com port. change pc com port avr studio does not detect com port. disable com port auto-detection in avr studio file menu. force com port to the correct com port troubleshooting guide STK526 rev. b hardware user guide 3-27 7709b?avr?07/08 STK526 rev. b hardware user guide 4-28 7709b?avr?07/08 section 4 technical specifications ? system unit ? physical dimensions ................................................. l=119 x w=56 x h=27 mm ? weight ...........................................................................................................70 g ? operating conditions ? internal voltage supply .....................................................................2.7v - 5.5v ? external voltage supply ........................ ..................................9v -15v (100ma) ? usb ...................................................................................4.4v -5.25v (100ma) ? connections ? usb connector ...................................... .................................type-b receptacle ? usb communications .................................................................. full speed 2.0 ? rs 232c connector .............................................................9-pin d-sub female ? rs 232c communications maximum spee d ........................................ 250 kbps STK526 rev. b hardware user guide 5-29 7709b?avr?07/08 section 5 technical support for technical support, please contact avr@atmel.com. when requesting technical support, please include the following information: ? which target avr device is used (complete part number) ? target voltage and speed ? clock source and fuse setting of the avr ? programming method (isp, parallel or specific boot-loader) ? hardware revisions of the avr tools, found on the pcb ? version number of avr studio. this can be found in the avr studio help menu. ? pc operating system and version/build ? pc processor type and speed ? a detailed description of the problem ? country and distributor or atmel contact STK526 rev. b hardware user guide 6-30 7709b?avr?07/08 section 6 complete schematics on the next pages, the following documents of STK526 revision 4381b are shown: ? complete schematics ? assembly drawing ? bill of materials ? default configuration summary complete schematics STK526 rev. b hardware user guide 6-31 7709b?avr?07/08 figure 6-1 . schematics, 1 of 4 ucap ugnd ugnd ugnd ugnd pc4 STK526 mezzanine for stk500 pd1 d- pd5 pd4 xtal1 xtal2 d+ pc6 pc7 avcc pc4 pc5 uvcc ucap u20 at90usb16 xtal1 1 xtal2 2 gnd 3 vcc 4 pc2 5 pd0 6 pd1 7 pd2 8 pd3 9 pd4 10 pd5 11 pd6 12 pd7 13 pb0 14 pb1 15 pb2 16 pb3 17 pb4 18 pb5 19 pb6 20 pb7 21 pc7 22 pc6 23 reset# 24 pc5 25 pc4 26 ucap 27 ugnd 28 d+/sck 29 d-/sdata 30 uvcc 31 avcc 32 bt 33 pb4 gnd gnd pd7 pb5 pb6 pd6 ugnd pb7 pb0 pd2 pd3 vcc reset pb1 pb3 pb2 note : u20 is the mlf32 footprint pc2 pd0 cr121 pgb0010603 c122 4.7uf tp6 vbus 1 vbus ugnd ugnd ugnd ugnd ugnd ugnd ugnd ugnd ugnd ugnd ugnd ugnd ugnd ugnd ugnd ugnd ugnd ugnd ugnd ugnd ugnd ugnd ugnd ugnd ugnd ugnd tit le size document number rev date: sheet of complete schematics 6-32 STK526 rev. b hardware user guide 7709b?avr?07/08 figure 6-2 . schematics, 2 of 4 c7 100nf c6 100nf pc6 pc4 pc5 pc2 pc7 r7 10k con 2x20 j2 exp. con 0 gnd 1 gnd 2 auxi0 3 auxo0 4 ct7 5 ct6 6 ct5 7 ct4 8 ct3 9 ct2 10 ct1 11 bsel2 12 (n.c.) 13 ref 14 nrst 15 pe2 16 pe1 17 pe0 18 gnd 19 gnd 20 vtg 21 vtg 22 pc7 23 pc6 24 pc5 25 pc4 26 pc3 27 pc2 28 pc1 29 pc0 30 pa7 31 pa6 32 pa5 33 pa4 34 pa3 35 pa2 36 pa1 37 pa0 38 gnd 39 gnd 40 xtal2 con 2x20 j1 exp. con 1 gnd 1 gnd 2 auxi1 3 auxo1 4 data7 5 data6 6 data5 7 data4 8 data3 9 data0 10 data1 11 data9 12 si 13 so 14 sck 15 cs 16 xt1 17 xt2 18 vtg 19 vtg 20 gnd 21 gnd 22 pb7 23 pb6 24 pb5 25 pb4 26 pb3 27 pb2 28 pb1 29 pb0 30 pd7 31 pd6 32 pd5 33 pd4 34 pd3 35 pd2 36 pd1 37 pd0 38 gnd 39 gnd 40 tit le size document number rev date: sheet of complete schematics STK526 rev. b hardware user guide 6-33 7709b?avr?07/08 figure 6-3 . schematics, 3 of 4 data flash leds 3.3v u9 at45db642d cason8 si 1 sck 2 reset 3 cs 4 wp 5 vcc 6 gnd 7 so 8 decoupling capacitor close to the connector sw3 tpa511g select 5 lef t 7 up 3 right 6 down 4 com1 1 com2 2 vcc pb[7..0] p1 sub-d9 female rs232 5 9 4 8 3 7 2 6 1 10 11 rs232 interface debug wire interface and serial isp interface pd1 pd4 pd5 pb2 pb2 pb2 pb2 pb2 pb2 pb2 pb2 pd0 STK526 mezzanine for stk500 vcc r123 47k vcc pb[7..0] pc2 c123 100nf ct s tit le size document number rev date: sheet of complete schematics 6-34 STK526 rev. b hardware user guide 7709b?avr?07/08 figure 6-4 . schematics, 4 of 4 uvcc ucap - c24 4.7uf vcc vtg u4 lm340 in gnd out noreg intreg vbus d6 ll4148 avcc 5v 5v - c23 4.7uf tp3 3.3v 1 tp4 5v 1 r19 124k 1% uvcc u6out=1.25*(1+r28/r29) stk cp121 vbus 3v3 vbus reg 3v3 r15 100k 1% reg 5v tp5 gnd 1 3.3v STK526 mezzanine for stk500 3.3v d4 topled lp m676 power l ed( red) r5 1k tit le size document number rev date: sheet of complete schematics STK526 rev. b hardware user guide 6-35 7709b?avr?07/08 figure 6-5 . assembly drawing, 1 of 2 (component side) complete schematics 6-36 STK526 rev. b hardware user guide 7709b?avr?07/08 table 6-1 . bill of materials qtty schematic reference part reference description case capacitors 14 c1, c2, c3, c6- c14, c16, c123 100nf ceramic capacitor 0805 1 c121 2.2f tantalum capacitor type a 1 c19 220nf ceramic capacitor 0805 1 c20 33nf ceramic capacitor 0805 2 c21, c28 1nf ceramic capacitor 0805 3 c23, c24, c122 4.7f tantalum capacitor type a 1 c25 1f tantalum capacitor type a 2 c26, c27 15pf ceramic capacitor 0805 diodes 3 cr1, cr2, cr123 pgb1010603mr esd protection (littlefuse) 0603 4 d0-d3 ka-3022sgc green led mini topled 1 d4 ka-3022src red led mini topled 2 d5, d6 ll4148 small signal diode, if max 200ma ll-34 connectors 2 j1, j2 m20-6102005 pc104 2x20-pin through-hole female press-fit stackable connector 2.54mm pitch 1 j3 usb type b usb type b receptacle special 1 j4 header 2x3 male header 2x3 pts for isp connection 2.54mm pitch 1 j5 jack power 2.1 jack power receptacle with diam. 2.1mm special 1 p1 db9 female db9 female 90 receptacle for rs-232 special configuration 2 jp1, jp2 jumper 1x2 header for configuration 1x2 pts 2.54mm pitch 1 jp4 jumper 2x4 header for configuration 2x4 pts 2.54mm pitch 1 jp121 jumper 1x3 header for configuration 1x3 pts 2.54mm pitch 1 cp121 configuration pad enabled by de fault. can be disabled cutting it. n/a 4 sp2-sp5 solder pad disabled by default. can be enabled with a solder drop. n/a resistors 5 r1-r5 1 kohms 1/16w-5% smd 0805 2 r6, r21 2 kohms 1/16w-1% smd 0603 4 r7, r12, r13, r20 10 kohms 1/16w-5% smd 0603 2 r9, r10 22 ohms 1/16w-5% smd 0603 5 r11, r14, r121, r122, r123 47 kohms 1/16w-1% smd 0805 2 r15, r16 100 kohms 1/16w-1% smd 0805 1 r17 0 ohms / strap n/a 0603 1 r19 120 kohms 1% 1/16w-1% smd 0805 integrated circuits complete schematics STK526 rev. b hardware user guide 6-37 7709b?avr?07/08 6.0.1 default configuration - summary table 6-2 . default configuration summary 1 u1 socket tqfp32 zif socket for qfp 32 pitch 0.8 mm 7x7 - 9x9 mm special 1 u20 at90usbxx2 mcu tqfp32/qfn32 1 u9 at45db642c 8mo dataflash memory cason8 1 u3 max3232ecae+ rs232 transceiver ssop16 1 u4 lm340 5v regulator sot223 1 u6 lp3982imm-adj ldo regulator 3v 3 (vin max 6v), 300ma msop8 1 u7 dbs104g diode bridge 400v 1a special 1 u8 bc847bpn transistor double npn/pnp ic max = 200ma sc-88 miscellaneous 2 sw1, sw2 pushbutton normally open ; 1.6n 6x3.5mm 1 sw3 tpa511g 4 ways joystick + center cms mount special 7 tp1-tp6, tp121 test point test point for measurements d=1.32mm 1 y1 8mhz 8mhz crystal hq49/4h 4 jp1-jp4 shunts shunts for configuration headers n/a table 6-1 . bill of materials qtty schematic reference part reference description case name ref. function state jumpers stk x1 jp1 at90usb82/162 clock configuration pin x1 open stk x2 jp2 at90usb82/162 clock configuration pin x2 open vcc source jp4 primary power source selection ?vbus? position 3v3 reg jp121 at90usb82/162 i/o power selection ?noreg? position solder pads sp4 ttl - cts open sp3 rs232 - cts open sp5 ttl - rts open sp2 rs232 - rts open configuration pads cp121 connect vbus to 3v3 on-board regulator closed complete schematics 6-38 STK526 rev. b hardware user guide 7709b?avr?07/08 6.1 document revision history 6.2 7709b 1. schematic drawings updated. printed on recycled paper. 7709b?avr?07/08 /xm ?2008 atmel corporation. all rights reserved. atmel ? , logo and combinations thereof, are registered trademarks, and everywhere you are ? are the trademarks of atmel corporation or its subsidiaries. other terms and product names may be trademarks of others. disclaimer: the information in this document is provided in con nection with atmel products. no li cense, express or implied, by estoppel or otherwise,to anyintellectu- alproperty right is granted by this document or in connection with the sale of atmel products. except as set forth in atmel?s terms and condi-tions of sale located on atmel?s web site, atmel assumes no liability whatsoever and disclaims any express, implied or statutorywar- ranty relating to its products including, but not limited to, the implied warranty of merchantability, fitness for a particu- larpurpose, or non-infringement. in no event shall atmel be liable for any direct, indirect, consequential, punitive, special or inciden-tal damages (including, without limitation, damages fo r loss of profits, business interruption, or loss of informa- tion) arising outof the us e or inability to use this document, even if atmel has been advised of the possibility of such dam- ages. atmel makes norepresentationsor warranties with respect to the ac curacy or completeness of the contents of this document and re serves the right to make changes to specificationsand product descrip tions at any time without notice. atmel does not make any commitment to update the information contained herein. unless specifically provid ed otherwise, atmel products are not suitable for, and shall not be used in, automotive applications. atmel?s products are not intended, authorized, or warranted for useas components in applications intended to support or sustainlife. atmel corporation atmel operations 2325 orchard parkway san jose, ca 95131, usa tel: 1(408) 441-0311 fax: 1(408) 487-2600 regional headquarters europe atmel sarl route des arsenaux 41 case postale 80 ch-1705 fribourg switzerland tel: (41) 26-426-5555 fax: (41) 26-426-5500 asia room 1219 chinachem golden plaza 77 mody road tsimshatsui east kowloon hong kong tel: (852) 2721-9778 fax: (852) 2722-1369 japan 9f, tonetsu shinkawa bldg. 1-24-8 shinkawa chuo-ku, tokyo 104-0033 japan tel: (81) 3-3523-3551 fax: (81) 3-3523-7581 memory 2325 orchard parkway san jose, ca 95131, usa tel: 1(408) 441-0311 fax: 1(408) 436-4314 microcontrollers 2325 orchard parkway san jose, ca 95131, usa tel: 1(408) 441-0311 fax: 1(408) 436-4314 la chantrerie bp 70602 44306 nantes cedex 3, france tel: (33) 2-40-18-18-18 fax: (33) 2-40-18-19-60 asic/assp/smart cards zone industrielle 13106 rousset cedex, france tel: (33) 4-42-53-60-00 fax: (33) 4-42-53-60-01 1150 east cheyenne mtn. blvd. colorado springs, co 80906, usa tel: 1(719) 576-3300 fax: 1(719) 540-1759 scottish enterprise technology park maxwell building east kilbride g75 0qr, scotland tel: (44) 1355-803-000 fax: (44) 1355-242-743 rf/automotive theresienstrasse 2 postfach 3535 74025 heilbronn, germany tel: (49) 71-31-67-0 fax: (49) 71-31-67-2340 1150 east cheyenne mtn. blvd. colorado springs, co 80906, usa tel: 1(719) 576-3300 fax: 1(719) 540-1759 biometrics/imaging/hi-rel mpu/ high speed converters/rf datacom avenue de rochepleine bp 123 38521 saint-egreve cedex, france tel: (33) 4-76-58-30-00 fax: (33) 4-76-58-34-80 literature requests www.atmel.com/literature |
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