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smsc usb2244/USB2244I datasheet revision 1.0 (05-27-08) datasheet product features usb2244/usb2244 i ultra fast usb 2.0 sd/mmc flash media controller general description the smsc usb2244/USB2244I is a usb 2.0 compliant, high speed bulk only mass storage class peripheral controller intended for reading and writing to sd/mmc flash media cards. the smsc usb2244/USB2244I is a fully integrated, single chip solution capable of ultra high performance operation. average sustained transfer rates exceeding 35mb/s are possible if the media and host can support those rates. provisions to read/write secure media formats is also provided. general features ? 36-pin qfn (6x6mm) lead-free rohs compliant package ? hardware-controlled data flow architecture for all self- mapped media ? pipelined hardware support for access to non-self- mapped media ? product name with ?i? denotes the version that supports the industrial temperature range of -40oc to 85oc ? support included for secure media format on a licensed, customized basis ?sd secure hardware features ? single chip flash media reader/writer ? secure digital 2.0 ? hs-sd, hc-sd, transflash? and reduced form factor media ? multimediacard specification 4.2 ? 1/4/8 bit mmc ? sdio and mmc streaming mode support ? extended configuration options ? socket switch polarities, etc. ? media activity led ? gpio configuration and polarity ? up to 8 gpios for special f unction use: led indicators, power control to memory devices, etc. the number of actual gpio?s depends on the implementation configuration used. ? one gpio with up to 200 ma drive ? on board 24mhz crystal driver circuit ? internal card power fet ? 200ma ? "fold-back" short circuit current protected ? 8051 8-bit microprocessor ? 60mhz - single cycle execution ? 64kb rom; 14kb ram ? internal regulator for 1.8v core operation ? optimized pinout improves signal routing, easing implementation and allowing for improved signal integrity mask programmable features ? vid/pid/language id ? 28-character manufacturer id and product string ? 12-hex digit (max) serial number string ? customizable vendor specific data led blink interval or duration software features ? optimized for low latency interrupt handling ? reduced memory footprint ? please see the usb2244/USB2244I software release notes for additional software features. applications ? flash media card reader/writer ? printers ? desktop and mobile pcs ? consumer a/v ? media players/viewers ? vista readyboost tm ? compatible with microsoft vista, windows xp, windows me, windows 2k sp4, apple osx, and linux mass storage class drivers
order number: usb2244/USB2244I-aezg-xx for 36 pin, qfn lead-free rohs compliant package ?xx? in the order number indicates the internal rom firmware revision level. please contact your smsc sales representative for more information. 80 arkay drive, hauppauge, ny 11788 (631) 435-6000, fax (631) 273-3123 copyright ? 2008 smsc or its subsidiaries. all rights reserved. circuit diagrams and other information relating to smsc product s are included as a means of illustrating typical applications. consequently, complete information sufficient for construction purposes is not necessarily given. although the information has been checked and is bel ieved to be accurate, no responsibility is assumed for inaccuracies. smsc reserves the right to make changes to specifications and product descriptions at any time without notice. contact your local smsc sales office to obtain the latest specif ications before placing your pr oduct order. the provision of th is information does not convey to the purchaser of the described semiconductor devices any licenses under any patent rights or other intellectual property rig hts of smsc or others. all sales are expressly conditional on your agreement to the terms and conditions of the most rece ntly dated version of smsc's standard t erms of sale agreement dated before the date of your order (the "terms of sale agreement"). the product may contain design defects or errors known as anomalies which may cause the product's functions to deviate from published specifications . anomaly sheets are available upon request. smsc products are not designed, intended, authorized or warranted for use in any life support or other a pplication where product failure could cause or contribute to per sonal injury or severe property damage. any and all such uses without prior written approval of an officer of smsc and further testing and/or modification will be fully at the risk of the customer. copies of this document or other smsc literature, as we ll as the terms of sale agreement, may be obtained by visiting smsc?s website at http://www.smsc.com. smsc is a registered trademark of standard microsystems corporation (?smsc?). product names and company na mes are the trademarks of their respective holders. smsc disclaims and excludes any and all warranties, includ ing without limitation any and all implied warranties of merchantability, fitness for a particular purpose, title, and against infringement and the like, and any and all warranties arising from any course of dealing or usage of trade. in no event shall smsc be li able for any direct, incidental, indirect, special, punitive, or consequential damages; or for lost data, pr ofits, savings or revenues of any kind; regardless of the form of action, whether based on contract; tort; negligence of smsc or others; strict liability; breach of warranty; or otherwise; whether or not any remedy of buyer is held to have failed of its essential purpose, and whether or not smsc has been advised of the possibility of such damages. ultra fast usb 2.0 sd/mmc flash media controller datasheet smsc usb2244/USB2244I 2 revision 1.0 (05-27-08) datasheet
ultra fast usb 2.0 sd/mmc flash media controller datasheet smsc usb2244/USB2244I 3 revision 1.0 (05-27-08) datasheet table of contents chapter 1 acronyms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 chapter 2 block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 chapter 3 pin table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 3.1 36-pin package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 chapter 4 pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 chapter 5 pin descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 0 5.1 pin descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 5.2 buffer type descriptio ns . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 chapter 6 pin reset state table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 6.1 36-pin reset states . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 chapter 7 dc parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 7.1 maximum guaranteed ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 7.2 recommended operating conditions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 7.3 dc electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 7.4 capacitance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 chapter 8 ac specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 8.1 oscillator/clock. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 chapter 9 package outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 chapter 10 gpio usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
ultra fast usb 2.0 sd/mmc flash media controller datasheet revision 1.0 (05-27-08) 4 smsc usb2244/USB2244I datasheet list of figures figure 2.1 usb2244/USB2244I block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 figure 4.1 usb2244/USB2244I 36 pin qfn diagra m . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 figure 6.1 pin reset states . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 figure 6.2 legend for pin reset states table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 figure 7.1 supply rise time model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 figure 8.1 typical crystal circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 figure 8.2 formula to find value of c1 and c2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 figure 9.1 usb2244/USB2244I 36-qfn, 6x6mm body, 0.5mm pitch . . . . . . . . . . . . . . . . . . . . . . . . . . 21
ultra fast usb 2.0 sd/mmc flash media controller datasheet smsc usb2244/USB2244I 5 revision 1.0 (05-27-08) datasheet list of tables table 3.1 usb2244/2244i 36-pin qfn package. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 table 5.2 usb2244/2244i 36-pin qfn pin descriptions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 table 5.3 usb2244/USB2244I buffer type descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 table 6.1 usb2244/USB2244I pin reset states . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 4 table 7.1 pin capacitance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 table 10.1 usb2244/USB2244I gpio usage (rom rev 0x00). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
ultra fast usb 2.0 sd/mmc flash media controller datasheet revision 1.0 (05-27-08) 6 smsc usb2244/USB2244I datasheet chapter 1 acronyms mmc: multimediacard pll: phase-locked loop qfn: quad flat no leads rohs: restriction of hazardous substances directive sd: secure digital sdio: secure digital input/output sdc: secure digital controllerl sie: serial interface engine *note: in order to develop, make, use, or sell readers and/or other products using or incorporating any of the smsc devices mad e the subject of this document or to use related smsc software programs, technical information and licenses under patent and othe r intellectual property rights from or through various persons or entities, including without limitation media standard companies , forums, and associations, and other patent holders may be requi red. these media standard companies, forums, and associations include without limitation the following: sony corporation (memory stick, memory stick pro); sd3 llc (secure digital); multimed ia card association (multimediacard); the ssfdc forum (smartmedi a); the compact flash association (compact flash); and fuji photo film co., ltd., olympus optical co., ltd., and toshiba co rporation (xd-picture card). smsc does not make such licenses or technical information available; does not promise or repres ent that any such licenses or technical information will actually be obtainable from or through the various persons or entities (inc luding the media standard companies, forums, and associations), or with respect to the terms under which they may be made available; and is not responsible for the accuracy or sufficiency of, or otherwise with respect to, any such technical information. smsc's obligations (if any) under the terms of sale agreement, or any other agreement with any customer, or otherwise, with respect to infringement, including without limitation any obligati ons to defend or settle claims, to reimburse for costs, or to pay damages, shall not apply to any of the devices made the subject of this document or any software programs related to any of suc h devices, or to any combinations involving any of them, with respect to infringement or claimed infringement of any existing or future patents related to solid state disk or other flash memory technol ogy or applications ("solid state disk patents"). by making an y purchase of any of the dev ices made the subject of this document, the customer represents, warrants, and agrees that it has obtained all necessary licenses under then-existing solid state di sk patents for the manufacture, use and sale of solid state d isk and other flash memory products and that the customer will timely obtain at no cost or expense to smsc all necessary licenses under solid state disk patents; that the manufacture and testing by or for smsc of the units of any of the devices made the sub ject of this document which may be sold to the customer, and any sale by smsc of such units to the customer, are valid exercises of the customer's rights and licenses under such solid state disk pa tents; that smsc shall have no obligation for royalties or oth erwise under any solid state disk patents by reason of any such manufacture, use, or sale of such units; and that smsc shall have no obligation for any costs or expenses related to the customer's obtaining or having obtained rights or licenses under any solid state disk patents. smsc makes no warranties, express, implied, or statutory, in regard to infringement or other violation of intellectual property rights. smsc disclaims and excludes any and all warranties against infringement and the like. no license is granted by smsc expressly, by implication, by estoppel or otherwise, under any patent, trademark, copyright, mask work right, trade secret, or other intellectual property right. **to obtain this software program the appropriate smsc software license agreement must be executed and in effect. forms of these software license agreements ma y be obtained by contacting smsc.
ultra fast usb 2.0 sd/mmc flash media controller datasheet smsc usb2244/USB2244I 7 revision 1.0 (05-27-08) datasheet chapter 2 block diagram figure 2.1 usb2244/USB2244I block diagram sie ctl fmdu ctl 8051 processor sfr ram ram usb host auto_ cbw proc phy fmi xdata bridge + bus arbiter bus intfc bus intfc bus intfc ep0 tx ep0 rx ep2 tx ep2 rx ep1 rx ep1 tx rom 64kb ram 10kb addr map gpios program memory i/o bus 7 pins 1.8v reg clock generation and control pll 4k total pwr_fet1 gpio10(card_pwr) sd/ mmc media interface
ultra fast usb 2.0 sd/mmc flash media controller datasheet revision 1.0 (05-27-08) 8 smsc usb2244/USB2244I datasheet chapter 3 pin table 3.1 36-pin package table 3.1 usb2244/2244i 36-pin qfn package sd/mmc interface (12 pins) sd_d0 sd_d1 sd_d2 sd_d3 sd_d4 sd_d5 sd_d6 sd_d7 sd_clk sd_cmd sd_wp gpio15 (sd_ncd) usb interface (7 pins) usb+ usb- rbias xtal1 (clkin) xtal2 vdda33 vdd18pll misc (13 pins) gpio1 (led1) gpio2 / rxd / sda gpio4 gpio7 / txd / sck gpio10 (crd_pwr) gpio12 gpio14 (4) nc test nreset digital, power (4 pins) (3)vdd33 vdd18 total 36
ultra fast usb 2.0 sd/mmc flash media controller datasheet smsc usb2244/USB2244I 9 revision 1.0 (05-27-08) datasheet chapter 4 pin configuration figure 4.1 usb2244/USB2244I 36 pin qfn diagram thermal slug (must be connected to vss) smsc usb2244/2244i (top view qfn-36) indicates pins on the bottom of the device. 26 sd_d3 25 gpio15 (sd_ncd) 24 sd_d2 23 gpio12 22 vdd33 21 gpio10 (crd_pwr) 20 19 gpio2 / rxd / sda 27 18 17 16 15 14 13 12 11 10 28 29 31 32 33 36 35 34 30 1 2 3 4 5 6 7 8 9 test gpio4 sd _wp gpio7 / txd / sck xtal2 xtal1 (clkin) vdd18pll rbias vdda33 gpio1 (led1) usb+ usb- sd_d1 sd_d0 vdd33 sd_d6 sd_clk sd_d5 vdd18 nc sd_cmd nc nc nc nreset gpio14 sd_d4 sd_d7 vdd33
ultra fast usb 2.0 sd/mmc flash media controller datasheet revision 1.0 (05-27-08) 10 smsc usb2244/USB2244I datasheet chapter 5 pin descriptions this section provides a detailed description of each signal. the signals are arranged in functional groups according to their associated interface. the ?n? symbol in the signal name indicates that th e active, or asserted, state occurs when the signal is at a low voltage level. when ?n? is not present be fore the signal name, the signal is asserted at the high voltage level. the terms assertion and negation are used exclusively. this is done to avoid confusion when working with a mixture of ?active low? and ?active high? signals. the term asser t, or assertion, indicates that a signal is active, independent of whether that level is represented by a high or low voltage. the term negate, or negation, indicates that a signal is inactive. 5.1 pin descriptions table 5.2 usb2244/2244i 36-pin qfn pin descriptions name symbol 36-pin qfn buffer type description secure digital interface sd data sd_d[7:0] 7 8 10 20 23 25 4 5 i/o12pu the bi-directional signals should have weak pull-up resistors. the register can be controlled by: sd_mmc_intf_en bit of sdc_mode_ctl sd clock sd_clk 9 o12 this is an output clock signal to sd/mmc device. the clock frequency is software configurable. sd command sd_cmd 11 i/o12pu this is a bi-directional signal that connects to the cmd signal of sd/mmc device. the bi- directional signal should have an internal weak pull-up resistor. the pull-up register can be controlled by: sd_mmc_intf_en bit of sdc_mode ctl sd write protect sd_nwp 30 i/o12 this pin is designated as the secure digital card mechanical write detect pin. sd card detect gpio gpio15 (sd_ncd) 26 i/o12 this is a gpio designated as the secure digital card detection pin. usb interface usb bus data usb+ usb- 2 3 i/o-u these pins connect to the usb bus data signals. usb transceiver bias rbias 35 i-r a 12.0k , 1.0% resistor is attached from vssa to this pin in order to set the transceiver's internal bias currents.
ultra fast usb 2.0 sd/mmc flash media controller datasheet smsc usb2244/USB2244I 11 revision 1.0 (05-27-08) datasheet 24mhz crystal or external clock input xtal1 (clkin) 33 iclkx this pin can be connected to one terminal of the crystal or it can be connected to an external 24 clock when a crystal is not used. 24mhz crystal xtal2 32 oclkx this is the ot her terminal of the crystal, or it can be left open when an external clock source is used to drive xtal1(clkin). it may not be used to drive any external circuitry other than the crystal circuit. 3.3v analog power vdda33 36 3.3v analog power 1.8v pll power vdd18pll 34 this pi n is the 1.8v power for the pll. +1.8v filtered analog power for internal pll. this pin must have a 1.0 f(or greater) 20% (esr <0.1 ) capacitor to vss. misc general purpose i/o gpio1 (led1) 1 i/o12 this pin may be used either as input, edge sensitive interrupt input, or output. in addition, as an output, the gpio1 can use output controlled by the led1_gpio1 register. general purpose i/o gpio2 / rxd / sda 27 i/o12 gpio: this pin may be used either as input, edge sensitive interrupt input, or output. i rxd: in addition to the above, the signal can be used as input to the rxd of uart in the device, when the txd_rxd_sel bit in util_config1 register is cleared to "0". i/o12 sda: this is the data pin when used with an external serial eeprom. general purpose i/o gpio4 29 i/o12 this pin may be used either as input, edge sensitive interrupt input, or output. general purpose i/o gpio7 / txd / sck 31 i/o12 gpio: this pin may be used either as input, edge sensitive interrupt input, or output. o12 txd: in addition, as an output, the gpio7 can be used as an output txd of uart in the device, when the gpio2/txd bit in utl_config register is set to "1" o12 sck: this is the clock output when used with an external eeprom. general purpose i/o gpio10 (crd_pwr) 21 i/o200 gpio: this pin may be used either as input, edge sensitive interrupt input, or output. crd_pwr: card power drive of 3.3v @ either 100ma or 200ma. general purpose i/o gpio14 19 i/o12 this pin may be used either as input, edge sensitive interrupt input, or output. reset input nreset 18 is this active lo w signal is used by the system to reset the chip. the active low pulse should be at least 1 s wide. table 5.2 usb2244/2244i 36-pin qf n pin descriptions (continued) name symbol 36-pin qfn buffer type description
ultra fast usb 2.0 sd/mmc flash media controller datasheet revision 1.0 (05-27-08) 12 smsc usb2244/USB2244I datasheet 5.2 buffer type descriptions test input test 28 i this signal is used for testing the chip. user should normally tie this pin low externally if the test function is not used. no connects nc no connect. no trace or signal should be routed/attached to these pins. digital / power +1.8v core power vdd18 13 all vdd18 pins must be connected together on the circuit board. +1.8v core power. this pin must have a 1.0 f (or greater) 20% (esr <0.1 ) capacitor to vss. 3.3v power & regulator input. vdd33 6 14 22 3.3v power & regulator input. ground vss slug ground reference table 5.3 usb2244/USB2244I buffer type descriptions buffer description i input. is input with schmitt trigger. i/o12 input/output buffer with 12ma sink and 12ma source. i/o200 input/output buffer 12ma with fet disa bled, 100/200ma source only when the fet is enabled. i/o12pu input/output bu ffer with 12ma sink and 12ma source with a pull-up resistor. o12 output buffer with 12ma source. iclkx xtal clock input. oclkx xtal clock output. i/o-u analog input/output defi ned in usb specification. i-r rbias. table 5.2 usb2244/2244i 36-pin qf n pin descriptions (continued) name symbol 36-pin qfn buffer type description
ultra fast usb 2.0 sd/mmc flash media controller datasheet smsc usb2244/USB2244I 13 revision 1.0 (05-27-08) datasheet chapter 6 pin reset state table figure 6.1 pin reset states figure 6.2 legend for pin reset states table voltage signal (v) time (t) reset reset hardware initialization firmware operational v dd33 v ss legend yes hardware enables function -- hardware disables function z hardware disables output driver pu hardware enables pullup pd hardware enables pulldown hw hardware controls function, but state is protocol dependent (fw) firmware controls function through registers vdd hardware supplies power through pin, applicable only to card_pwr pins none hardware disables pad
ultra fast usb 2.0 sd/mmc flash media controller datasheet revision 1.0 (05-27-08) 14 smsc usb2244/USB2244I datasheet 6.1 36-pin reset states table 6.1 usb2244/USB2244I pin reset states reset state post-reset state sd mode pin pin name function out- put pu/ pd in- put function out- put pu/ pd in- put 8 sd_d6 none z -- -- sd_d6 hw pu yes 7 sd_d7 none z -- -- sd_d7 hw pu yes 5 sd_d0 none z -- -- sd_d0 hw pu yes 4 sd_d1 none z -- -- sd_d1 hw pu yes 30 sd_wp sd_wp 0 -- -- sd_wp (fw) (fw) (fw) 25 sd_d2 none z -- -- sd_d2 hw pu yes 23 sd_d3 none z -- -- sd_d3 hw pu yes 20 sd_d4 none z -- -- sd_d4 hw pu yes 9 sd_clk none z -- -- sd_clk hw -- yes 10 sd_d5 none z -- -- sd_d5 hw pu yes 11 sd_cmd none z -- -- sd_cmd hw pu yes 19 gpio14 gpio zpuyes 26 gpio15 (sd_ncd) gpio zpuyes 24 gpio12 gpio zpuyes 27 gpio2 / rxd / sda gpio 0---- rxd z pu yes 29 gpio4 gpio 0---- 31 gpio7 / txd / sck gpio 0---- txd hw -- -- 21 gpio10(card_pwr) gpio z---- pwr vdd -- -- 28 test test z--yes 18 nreset nreset z--yes 1 gpio1 (led1) gpio1 0---- 17:15 nc none z -- -- none z -- -- 12 nc none z -- -- none z -- -- 2 usb+ usb+ z -- -- 3 usb- usb- z -- -- 35 rbias 33 xtal1 (clkin) 32 xtal2
ultra fast usb 2.0 sd/mmc flash media controller datasheet smsc usb2244/USB2244I 15 revision 1.0 (05-27-08) datasheet chapter 7 dc parameters 7.1 maximum guaranteed ratings note 7.1 stresses above the specified parameters may cause permanent damage to the device. this is a stress rating only and functional operation of the device at any condition above those indicated in the operation sections of this specification is not implied. note 7.2 when powering this device from laboratory or system power supplies, it is important that the absolute maximum ratings not be exceeded or device failure can result. some power supplies exhibit voltage spikes on their outputs when the ac power is switched on or off. in addition, voltage transients on the ac power line may appear on the dc output. when this possibility exists, it is suggested that a clamp circuit be used. parameter symbol min max units comments storage temperature t a -55 150 c lead temperature 325 c soldering < 10 seconds 3.3v supply voltage v dd33, v dda33 -0.5 4.0 v voltage on usb+ and usb- pins -0.5 (3.3v supply voltage + 2) 6v voltage on gpio10 -0.5 v dd33 + 0.3 v when internal power fet operation of this pin is enabled, this pin may be simultaneously shorted to ground or any voltage up to 3.63v indefinitely, without damage to the device as long as v dd33 and v dda33 are less than 3.63v and t a is less than 70 o c. voltage on any signal pin -0.5 v dd33 + 0.3 v voltage on xtal1 -0.5 4.0 v voltage on xtal2 -0.5 v dd18 + 0.3 v
ultra fast usb 2.0 sd/mmc flash media controller datasheet revision 1.0 (05-27-08) 16 smsc usb2244/USB2244I datasheet figure 7.1 supply rise time model 7.2 recommended operating conditions note 7.3 a 3.3v regulator with an output tolerance of 1% must be used if the output of the internal power fet?s must support a 5% tolerance. parameter symbol min max units comments operating temperature commercial part industrial part t a t a 0 -40 70 85 c c 3.3v supply voltage v dd33, v dda33 3.0 3.6 v ( note 7.3 ) 3.3v supply rise time t rt 0 400 s voltage on usb+ and usb- pins -0.3 5.5 v if any 3.3v supply voltage drops below 3.0v, then the max becomes: (3.3v supply voltage) + 0.5 5.5 voltage on any signal pin -0.3 v dd33 v voltage on xtal1 -0.3 v dda33 v voltage on xtal2 -0.3 v dd18 v t 10% 10% 90% voltage t rt t 90% time 100% 3.3v vss vdd33
ultra fast usb 2.0 sd/mmc flash media controller datasheet smsc usb2244/USB2244I 17 revision 1.0 (05-27-08) datasheet 7.3 dc electrical characteristics parameter symbol min typ max units comments i, ipu, ipd type input buffer low input level high input level pull down pull up v ili v ihi pd pu 2.0 72 58 0.8 v v a a ttl levels is type input buffer low input level high input level hysteresis v ili v ihi v hysi 2.0 420 0.8 v v mv ttl levels iclk input buffer low input level high input level input leakage v ilck v ihck i il 1.4 -10 0.5 +10 v v a v in = 0 to v dd33 input leakage (all i and is buffers) low input leakage high input leakage i il i ih -10 -10 +10 +10 a a v in = 0 v in = v dd33 o12 type buffer low output level high output level output leakage v ol v oh i ol v dd33 - 0.4 -10 0.4 +10 v v a i ol = 12ma @ v dd33 = 3.3v i oh = -12ma @ v dd33 = 3.3v v in = 0 to v dd33 ( note 7.4 )
ultra fast usb 2.0 sd/mmc flash media controller datasheet revision 1.0 (05-27-08) 18 smsc usb2244/USB2244I datasheet note 7.4 output leakage is measured with the current pins in high impedance. note 7.5 see the usb 2.0 specification, chapter 7, for usb dc electrical characteristics note 7.6 rbias is a 3.3v tolerant analog pin. note 7.7 output current range is contro lled by program software, software disables fet during short circuit condition. note 7.8 the assignment of each integrated card po wer fet to a designated card connector is controlled by both firmware and the specific board implementat ion. firmware will default to i/o12, i/o12pu & i/o12pd type buffer low output level high output level output leakage pull down pull up v ol v oh i ol pd pu v dd33 - 0.4 -10 72 58 0.4 +10 v v a a a i ol = 12ma @ v dd33 = 3.3v i oh = -12ma @ v dd33 = 3.3v v in = 0 to v dd33 ( note 7.4 ) io-u ( note 7.5 ) i-r ( note 7.6 ) i/o200 integrated power fet for gpio10 high output current mode low output current mode ( note 7.7 ) on resistance ( note 7.7 ) output voltage rise time i out i out r dson t dson 200 100 2.1 800 ma ma s vdrop fet = 0.46v vdrop fet = 0.23v i fet = 70ma c load = 10 f supply current unconfigured i ccinit 80 90 ma supply current active full speed high speed i cc i cc 110 135 140 165 ma ma supply current suspend i csby 350 700 a industrial temperature suspend i csbyi 350 900 a parameter symbol min typ max units comments
ultra fast usb 2.0 sd/mmc flash media controller datasheet smsc usb2244/USB2244I 19 revision 1.0 (05-27-08) datasheet the settings listed in table 10.1, ?usb2244/USB2244I gp io usage (rom rev 0x00),? on page 22 . note 7.9 the 3.3v supply should be at least at 75% of its operating condition before the 1.8v supply is allowed to ramp up. 7.4 capacitance t a = 25c; fc = 1mhz; v dd, v ddp = 1.8v table 7.1 pin capacitance parameter symbol limits unit test condition min typ max clock input capacitance c xtal 2 pf all pins (except usb pins and pins under test) are tied to ac ground. input capacitance c in 10 pf output capacitance c out 20 pf
ultra fast usb 2.0 sd/mmc flash media controller datasheet revision 1.0 (05-27-08) 20 smsc usb2244/USB2244I datasheet chapter 8 ac specifications 8.1 oscillator/clock crystal: parallel resonant, fundamental mode, 24 mhz 100ppm. external clock: 50% duty cycle 10%, 24 mhz 100ppm, jitter < 1 00ps rms. figure 8.1 typical crystal circuit note: c b equals total board/trace capacitance. figure 8.2 formula to find value of c 1 and c 2 xtal1 (c s1 = c b + c xtal ) xtal2 (c s2 = c b + c xtal ) c 1 c 2 c l 1meg crystal (c 1 + c s1 ) x (c 2 + c s2 ) (c 1 + c s1 + c 2 + c s2 ) c l =
ultra fast usb 2.0 sd/mmc flash media controller datasheet revision 1.0 (05-27-08) 21 smsc usb2244/USB2244I datasheet chapter 9 package outline figure 9.1 usb2244/us b2244i 36-qfn, 6x6mm body, 0.5mm pitch
ultra fast usb 2.0 sd/mmc flash media controller datasheet revision 1.0 (05-27-08) 22 smsc usb2244/USB2244I datasheet chapter 10 gpio usage table 10.1 usb2244/USB2244I gpio usage (rom rev 0x00) name active level symbol description and note gpio1 h led1 led indicator gpio2 h rxd / sda receive port of debugger / serial eeprom data gpio4 user gpio user defined gpio7 h txd / sck transmit port of debugger / serial eeprom clock gpio10 l crd_pwr card power control gpio12 user gpio user defined gpio14 user gpio user defined gpio15 l sd_ncd secure digital card detect

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