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Features
* Fast Read Access Time - 150 ns * Automatic Page Write Operation
- Internal Address and Data Latches for 64 Bytes - Internal Control Timer Fast Write Cycle Times - Page Write Cycle Time: 3 ms or 10 ms Maximum - 1 to 64-byte Page Write Operation Low Power Dissipation - 50 mA Active Current - 200 A CMOS Standby Current Hardware and Software Data Protection DATA Polling for End of Write Detection High Reliability CMOS Technology - Endurance: 104 or 105 Cycles - Data Retention: 10 Years Single 5V 10% Supply CMOS and TTL Compatible Inputs and Outputs JEDEC Approved Byte-wide Pinout Full Military and Industrial Temperature Ranges Green (Pb/Halide-free) Packaging Option
*
*
* * *
256K (32K x 8) Paged Parallel EEPROM AT28C256
* * * * *
1. Description
The AT28C256 is a high-performance electrically erasable and programmable readonly memory. Its 256K of memory is organized as 32,768 words by 8 bits. Manufactured with Atmel's advanced nonvolatile CMOS technology, the device offers access times to 150 ns with power dissipation of just 440 mW. When the device is deselected, the CMOS standby current is less than 200 A. The AT28C256 is accessed like a Static RAM for the read or write cycle without the need for external components. The device contains a 64-byte page register to allow writing of up to 64 bytes simultaneously. During a write cycle, the addresses and 1 to 64 bytes of data are internally latched, freeing the address and data bus for other operations. Following the initiation of a write cycle, the device will automatically write the latched data using an internal control timer. The end of a write cycle can be detected by DATA Polling of I/O7. Once the end of a write cycle has been detected a new access for a read or write can begin. Atmel's AT28C256 has additional features to ensure high quality and manufacturability. The device utilizes internal error correction for extended endurance and improved data retention characteristics. An optional software data protection mechanism is available to guard against inadvertent writes. The device also includes an extra 64 bytes of EEPROM for device identification or tracking.
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2. Pin Configurations
Pin Name A0 - A14 CE OE WE I/O0 - I/O7 NC DC Function Addresses Chip Enable Output Enable Write Enable Data Inputs/Outputs No Connect Don't Connect
2.1
28-lead TSOP Top View
OE A11 A9 A8 A13 WE VCC A14 A12 A7 A6 A5 A4 A3 1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 27 26 25 24 23 22 21 20 19 18 17 16 15 A10 CE I/O7 I/O6 I/O5 I/O4 I/O3 GND I/O2 I/O1 I/O0 A0 A1 A2
2.3
32-pad LCC, 28-lead PLCC Top View
A7 A12 A14 DC VCC WE A13
Note:
PLCC package pins 1 and 17 are Don't Connect.
2.2
28-lead PGA Top View
2.4
28-lead Cerdip/PDIP/Flatpack/SOIC - Top View
A14 A12 A7 A6 A5 A4 A3 A2 A1 A0 I/O0 I/O1 I/O2 GND 1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 27 26 25 24 23 22 21 20 19 18 17 16 15 VCC WE A13 A8 A9 A11 OE A10 CE I/O7 I/O6 I/O5 I/O4 I/O3
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I/O1 I/O2 GND DC I/O3 I/O4 I/O5
14 15 16 17 18 19 20
A6 A5 A4 A3 A2 A1 A0 NC I/O0
5 6 7 8 9 10 11 12 13
4 3 2 1 32 31 30
29 28 27 26 25 24 23 22 21
A8 A9 A11 NC OE A10 CE I/O7 I/O6
AT28C256
3. Block Diagram
4. Device Operation
4.1 Read
The AT28C256 is accessed like a Static RAM. When CE and OE are low and WE is high, the data stored at the memory location determined by the address pins is asserted on the outputs. The outputs are put in the high impedance state when either CE or OE is high. This dual-line control gives designers flexibility in preventing bus contention in their system.
4.2
Byte Write
A low pulse on the WE or CE input with CE or WE low (respectively) and OE high initiates a write cycle. The address is latched on the falling edge of CE or WE, whichever occurs last. The data is latched by the first rising edge of CE or WE. Once a byte write has been started it will automatically time itself to completion. Once a programming operation has been initiated and for the duration of tWC, a read operation will effectively be a polling operation.
4.3
Page Write
The page write operation of the AT28C256 allows 1 to 64 bytes of data to be written into the device during a single internal programming period. A page write operation is initiated in the same manner as a byte write; the first byte written can then be followed by 1 to 63 additional bytes. Each successive byte must be written within 150 s (tBLC) of the previous byte. If the tBLC limit is exceeded the AT28C256 will cease accepting data and commence the internal programming operation. All bytes during a page write operation must reside on the same page as defined by the state of the A6 - A14 inputs. For each WE high to low transition during the page write operation, A6 - A14 must be the same. The A0 to A5 inputs are used to specify which bytes within the page are to be written. The bytes may be loaded in any order and may be altered within the same load period. Only bytes which are specified for writing will be written; unnecessary cycling of other bytes within the page does not occur.
4.4
DATA Polling
The AT28C256 features DATA Polling to indicate the end of a write cycle. During a byte or page write cycle an attempted read of the last byte written will result in the complement of the written data to be presented on I/O7. Once the write cycle has been completed, true data is valid on all outputs, and the next write cycle may begin. DATA Polling may begin at anytime during the write cycle. 3
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4.5
Toggle Bit
In addition to DATA Polling the AT28C256 provides another method for determining the end of a write cycle. During the write operation, successive attempts to read data from the device will result in I/O6 toggling between one and zero. Once the write has completed, I/O6 will stop toggling and valid data will be read. Reading the toggle bit may begin at any time during the write cycle.
4.6
Data Protection
If precautions are not taken, inadvertent writes may occur during transitions of the host system power supply. Atmel has incorporated both hardware and software features that will protect the memory against inadvertent writes.
4.6.1
Hardware Protection Hardware features protect against inadvertent writes to the AT28C256 in the following ways: (a) VCC sense - if VCC is below 3.8V (typical) the write function is inhibited; (b) VCC power-on delay - once VCC has reached 3.8V the device will automatically time out 5 ms (typical) before allowing a write; (c) write inhibit - holding any one of OE low, CE high or WE high inhibits write cycles; and (d) noise filter - pulses of less than 15 ns (typical) on the WE or CE inputs will not initiate a write cycle. Software Data Protection A software controlled data protection feature has been implemented on the AT28C256. When enabled, the software data protection (SDP), will prevent inadvertent writes. The SDP feature may be enabled or disabled by the user; the AT28C256 is shipped from Atmel with SDP disabled. SDP is enabled by the host system issuing a series of three write commands; three specific bytes of data are written to three specific addresses (refer to "Software Data Protection" algorithm). After writing the 3-byte command sequence and after tWC the entire AT28C256 will be protected against inadvertent write operations. It should be noted, that once protected the host may still perform a byte or page write to the AT28C256. This is done by preceding the data to be written by the same 3-byte command sequence used to enable SDP. Once set, SDP will remain active unless the disable command sequence is issued. Power transitions do not disable SDP and SDP will protect the AT28C256 during power-up and power-down conditions. All command sequences must conform to the page write timing specifications. The data in the enable and disable command sequences is not written to the device and the memory addresses used in the sequence may be written with data in either a byte or page write operation. After setting SDP, any attempt to write to the device without the 3-byte command sequence will start the internal write timers. No data will be written to the device; however, for the duration of tWC, read operations will effectively be polling operations.
4.6.2
4.7
Device Identification
An extra 64 bytes of EEPROM memory are available to the user for device identification. By raising A9 to 12V 0.5V and using address locations 7FC0H to 7FFFH the additional bytes may be written to or read from in the same manner as the regular memory array.
4.8
Optional Chip Erase Mode
The entire device can be erased using a 6-byte software code. Please see "Software Chip Erase" application note for details.
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5. DC and AC Operating Range
AT28C256-15 Operating Temperature (Case) VCC Power Supply Ind. Mil. -40C - 85C -55C - 125C 5V 10% -55C - 125C 5V 10% -55C - 125C 5V 10% -55C - 125C 5V 10% AT28C256-20 AT28C256-25 AT28C256-35
6. Operating Modes
Mode Read Write
(2)
CE VIL VIL VIH X X X VIL
OE VIL VIH X(1) X VIL VIH VH
(3)
WE VIH VIL X VIH X X VIL
I/O DOUT DIN High Z
Standby/Write Inhibit Write Inhibit Write Inhibit Output Disable Chip Erase Notes: 1. X can be VIL or VIH. 2. Refer to AC programming waveforms. 3. VH = 12.0V 0.5V.
High Z High Z
7. Absolute Maximum Ratings*
Temperature under Bias ................................ -55C to +125C Storage Temperature ..................................... -65C to +150C All Input Voltages (including NC Pins) with Respect to Ground ...................................-0.6V to +6.25V All Output Voltages with Respect to Ground .............................-0.6V to VCC + 0.6V Voltage on OE and A9 with Respect to Ground ...................................-0.6V to +13.5V *NOTICE: Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability
8. DC Characteristics
Symbol ILI ILO ISB1 ISB2 ICC VIL VIH VOL VOH Parameter Input Load Current Output Leakage Current VCC Standby Current CMOS VCC Standby Current TTL VCC Active Current Input Low Voltage Input High Voltage Output Low Voltage Output High Voltage IOL = 2.1 mA IOH = -400 A 2.4 2.0 0.45 Condition VIN = 0V to VCC + 1V VI/O = 0V to VCC CE = VCC - 0.3V to VCC + 1V CE = 2.0V to VCC + 1V f = 5 MHz; IOUT = 0 mA Ind. Mil. Min Max 10 10 200 300 3 50 0.8 Units A A A A mA mA V V V V
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9. AC Read Characteristics
AT28C256-15 Symbol tACC tCE(1) tOE(2) tDF(3)(4) tOH Parameter Address to Output Delay CE to Output Delay OE to Output Delay CE or OE to Output Float Output Hold from OE, CE or Address, whichever occurred first 0 0 0 Min Max 150 150 70 50 0 0 0 AT28C256-20 Min Max 200 200 80 55 0 0 0 AT28C256-25 Min Max 250 250 100 60 0 0 0 AT28C256-35 Min Max 350 350 100 70 Units ns ns ns ns ns
10. AC Read Waveforms(1)(2)(3)(4)
Notes:
1. CE may be delayed up to tACC - tCE after the address transition without impact on tACC. 2. OE may be delayed up to tCE - tOE after the falling edge of CE without impact on tCE or by tACC - tOE after an address change without impact on tACC. 3. tDF is specified from OE or CE whichever occurs first (CL = 5 pF). 4. This parameter is characterized and is not 100% tested.
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11. Input Test Waveforms and Measurement Level
tR, tF < 5 ns
12. Output Test Load
13. Pin Capacitance
f = 1 MHz, T = 25C(1)
Symbol CIN COUT Note: Typ 4 8 Max 6 12 Units pF pF Conditions VIN = 0V VOUT = 0V
1. This parameter is characterized and is not 100% tested.
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14. AC Write Characteristics
Symbol tAS, tOES tAH tCS tCH tWP tDS tDH, tOEH tDV Note: Parameter Address, OE Setup Time Address Hold Time Chip Select Setup Time Chip Select Hold Time Write Pulse Width (WE or CE) Data Setup Time Data, OE Hold Time Time to Data Valid 1. NR = No Restriction Min 0 50 0 0 100 50 0 NR(1) Max Units ns ns ns ns ns ns ns
15. AC Write Waveforms
15.1 WE Controlled
15.2
CE Controlled
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16. Page Mode Characteristics
Symbol tWC tAS tAH tDS tDH tWP tBLC tWPH Parameter AT28C256 Write Cycle Time (option available) AT28C256F Address Setup Time Address Hold Time Data Setup Time Data Hold Time Write Pulse Width Byte Load Cycle Time Write Pulse Width High 50 0 50 50 0 100 150 3 ms ns ns ns ns ns s ns Min Max 10 Units ms
17. Page Mode Write Waveforms(1)(2)
Notes:
1. A6 through A14 must specify the same page address during each high to low transition of WE (or CE). 2. OE must be high only when WE and CE are both low.
18. Chip Erase Waveforms
tS = tH = 5 sec (min.) tW = 10 msec (min.) VH = 12.0V 0.5V
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19. Software Data Protection Enable Algorithm(1)
LOAD DATA AA TO ADDRESS 5555
20. Software Data Protection Disable Algorithm(1)
LOAD DATA AA TO ADDRESS 5555
LOAD DATA 55 TO ADDRESS 2AAA
LOAD DATA 55 TO ADDRESS 2AAA
LOAD DATA A0 TO ADDRESS 5555
WRITES ENABLED(2)
LOAD DATA 80 TO ADDRESS 5555
LOAD DATA XX TO ANY ADDRESS(4)
LOAD DATA AA TO ADDRESS 5555
LOAD LAST BYTE TO LAST ADDRESS
ENTER DATA PROTECT STATE
LOAD DATA 55 TO ADDRESS 2AAA
Notes:
1. Data Format: I/O7 - I/O0 (Hex); Address Format: A14 - A0 (Hex). 2. Write Protect state will be activated at end of write even if no other data is loaded. 3. Write Protect state will be deactivated at end of write period even if no other data is loaded. 4. 1 to 64 bytes of data are loaded.
LOAD DATA 20 TO ADDRESS 5555
EXIT DATA PROTECT STATE(3)
LOAD DATA XX TO ANY ADDRESS(4)
LOAD LAST BYTE TO LAST ADDRESS
21. Software Protected Write Cycle Waveforms(1)(2)
Notes:
1. A6 through A14 must specify the same page address during each high to low transition of WE (or CE) after the software code has been entered. 2. OE must be high only when WE and CE are both low.
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22. Data Polling Characteristics(1)
Symbol tDH tOEH tOE tWR Notes: Parameter Data Hold Time OE Hold Time OE to Output Delay
(2)
Min 0 0
Typ
Max
Units ns ns ns
Write Recovery Time 1. These parameters are characterized and not 100% tested. 2. See"AC Read Characteristics" on page 6.
0
ns
23. Data Polling Waveforms
24. Toggle Bit Characteristics(1)
Symbol tDH tOEH tOE tOEHP tWR Notes: Parameter Data Hold Time OE Hold Time OE to Output Delay(2) OE High Pulse Write Recovery Time 1. These parameters are characterized and not 100% tested. 2. See "AC Read Characteristics" on page 6. 150 0 Min 10 10 Typ Max Units ns ns ns ns ns
25. Toggle Bit Waveforms(1)(2)(3)
Notes:
1. Toggling either OE or CE or both OE and CE will operate toggle bit. 2. Beginning and ending state of I/O6 will vary. 3. Any address location may be used but the address should not vary.
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26. Normalized ICC Graphs
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27. Ordering Information(2)
27.1
tACC (ns) 150
Standard Package
ICC (mA) Active 50 Standby 0.2 Ordering Code AT28C256(E,F)-15JI AT28C256(E,F)-15PI AT28C256(E,F)-15SI AT28C256(E,F)-15TI AT28C256(E,F)-15DM/883 AT28C256(E,F)-15FM/883 AT28C256(E,F)-15LM/883 AT28C256(E,F)-15UM/883 AT28C256(E,F)-20DM/883 AT28C256(E,F)-20FM/883 AT28C256(E,F)-20LM/883 AT28C256(E,F)-20UM/883 AT28C256(E,F)-25DM/883 AT28C256(E,F)-25FM/883 AT28C256(E,F)-25LM/883 AT28C256(E,F)-25UM/883 AT28C256(E,F)-35UM/883 Package 32J 28P6 28S 28T 28D6 28F 32L 28U 28D6 28F 32L 28U 28D6 28F 32L 28U 28U Operation Range Industrial (-40 C to 85 C)
0.3
Military/883C Class B, Fully Compliant (-55 C to 125 C) Military/883C Class B, Fully Compliant (-55 C to 125 C)
200
50
0.3
250
50
0.3
Military/883C Class B, Fully Compliant (-55 C to 125 C)
Package Type 28D6 28F 32J 32L 28P6 28S 28T 28U W 28-lead, 0.600" Wide, Non-windowed, Ceramic Dual Inline Package (Cerdip) 28-lead, Non-windowed, Ceramic Bottom-brazed Flat Package (Flatpack) 32-lead, Plastic J-leaded Chip Carrier (PLCC) 32-pad, Non-windowed, Ceramic Leadless Chip Carrier (LCC) 28-lead, 0.600" Wide, Plastic Dual Inline Package (PDIP) 28-lead, 0.300" Wide, Plastic Gull Wing Small Outline (SOIC) 28-lead, Plastic Thin Small Outline Package (TSOP) 28-pin, Ceramic Pin Grid Array (PGA) Die Options Blank E F Standard Device: Endurance = 10K Write Cycles; Write Time = 10 ms High Endurance Option: Endurance = 100K Write Cycles Fast Write Option: Write Time = 3 ms
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27.1
tACC (ns) 150
Standard Package (Continued)
ICC (mA) Active 50 Standby 0.3 Ordering Code 5962-88525 16 UX 5962-88525 16 XX 5962-88525 16 YX 5962-88525 16 ZX 5962-88525 15 UX 5962-88525 15 XX 5962-88525 15 YX 5962-88525 15 ZX 5962-88525 14 UX 5962-88525 14 XX 5962-88525 14 YX 5962-88525 14 ZX Package 28U 28D6 32L 28F 28U 28D6 32L 28F 28U 28D6 32L 28F Operation Range Military/883C Class B, Fully Compliant (-55 C to 125 C)
(3)
Military/883C Class B, Fully Compliant (-55 C to 125 C) Military/883C Class B, Fully Compliant (-55 C to 125 C)
Package Type 28D6 28F 32J 32L 28P6 28U W 28-lead, 0.600" Wide, Non-windowed, Ceramic Dual Inline Package (Cerdip) 28-lead, Non-windowed, Ceramic Bottom-brazed Flat Package (Flatpack) 32-lead, Plastic J-leaded Chip Carrier (PLCC) 32-pad, Non-windowed, Ceramic Leadless Chip Carrier (LCC) 28-lead, 0.600" Wide, Plastic Dual Inline Package (PDIP) 28-pin, Ceramic Pin Grid Array (PGA) Die Options Blank E F Standard Device: Endurance = 10K Write Cycles; Write Time = 10 ms High Endurance Option: Endurance = 100K Write Cycles Fast Write Option: Write Time = 3 ms
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27.1
tACC (ns) 150
(3)
Standard Package (Continued)
ICC (mA) Active 50 Standby 0.3 Ordering Code 5962-88525 08 UX 5962-88525 08 XX 5962-88525 08 YX 5962-88525 08 ZX 5962-88525 07 UX 5962-88525 07 XX 5962-88525 07 YX 5962-88525 07 ZX 5962-88525 06 UX 5962-88525 06 XX 5962-88525 06 YX 5962-88525 06 ZX Package 28U 28D6 32L 28F 28U 28D6 32L 28F 28U 28D6 32L 28F 28U 28D6 32L 28F 28U 28D6 32L 28F 28U 28D6 32L 28F 28U 28D6 32L 28F Operation Range Military/883C Class B, Fully Compliant (-55 C to 125 C) Military/883C Class B, Fully Compliant (-55 C to 125 C) Military/883C Class B, Fully Compliant (-55 C to 125 C) Military/883C Class B, Fully Compliant (-55 C to 125 C) Military/883C Class B, Fully Compliant (-55 C to 125 C) Military/883C Class B, Fully Compliant (-55 C to 125 C) Military/883C Class B, Fully Compliant (-55 C to 125 C)
200(3)
50
0.3
5962-88525 12 UX 5962-88525 12 XX 5962-88525 12 YX 5962-88525 12 ZX 5962-88525 04 UX 5962-88525 04 XX 5962-88525 04 YX 5962-88525 04 ZX 5962-88525 13 UX 5962-88525 13 XX 5962-88525 13 YX 5962-88525 13 ZX 5962-88525 11 UX 5962-88525 11 XX 5962-88525 11 YX 5962-88525 11 ZX
50
0.3
250(3)
50
0.3
Package Type 28D6 28F 32L 28U W 28-lead, 0.600" Wide, Non-windowed, Ceramic Dual Inline Package (Cerdip) 28-lead, Non-windowed, Ceramic Bottom-brazed Flat Package (Flatpack) 32-pad, Non-windowed, Ceramic Leadless Chip Carrier (LCC) 28-pin, Ceramic Pin Grid Array (PGA) Die Options Blank E F Standard Device: Endurance = 10K Write Cycles; Write Time = 10 ms High Endurance Option: Endurance = 100K Write Cycles Fast Write Option: Write Time = 3 ms
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27.1
tACC (ns) 250
Standard Package (Continued)
ICC (mA) Active 50 Standby 0.3 Ordering Code 5962-88525 05 UX 5962-88525 05 XX 5962-88525 05 YX 5962-88525 05 ZX 5962-88525 03 UX 5962-88525 03 XX 5962-88525 03 YX 5962-88525 03 ZX Package 28U 28D6 32L 28F 28U 28D6 32L 28F 28U 28D6 32L 28F 28U 28D6 32L 28F 28U 28D6 32L 28F 28U 28D6 32L 28F Operation Range Military/883C Class B, Fully Compliant (-55 C to 125 C) Military/883C Class B, Fully Compliant (-55 C to 125 C) Military/883C Class B, Fully Compliant (-55 C to 125 C) Military/883C Class B, Fully Compliant (-55 C to 125 C) Military/883C Class B, Fully Compliant (-55 C to 125 C) Military/883C Class B, Fully Compliant (-55 C to 125 C)
300
50
0.3
5962-88525 10 UX 5962-88525 10 XX 5962-88525 10 YX 5962-88525 10 ZX 5962-88525 02 UX 5962-88525 02 XX 5962-88525 02 YX 5962-88525 02 ZX 5962-88525 09 UX 5962-88525 09 XX 5962-88525 09 YX 5962-88525 09 ZX 5962-88525 01 UX 5962-88525 01 XX 5962-88525 01 YX 5962-88525 01 ZX
50
0.3
350
50
0.3
50
0.3
Notes:
1. Electrical specifications for these speeds are defined by Standard Microcircuit Drawing 5962-88525. 2. See "Valid Part Numbers" on page 18. 3. SMD specifies Software Data Protection feature for device type, although Atmel product supplied to every device type in the SMD is 100% tested for this feature.
Package Type 28D6 28F 32L 28U W 28-lead, 0.600" Wide, Non-windowed, Ceramic Dual Inline Package (Cerdip) 28-lead, Non-windowed, Ceramic Bottom-brazed Flat Package (Flatpack) 32-pad, Non-windowed, Ceramic Leadless Chip Carrier (LCC) 28-pin, Ceramic Pin Grid Array (PGA) Die Options Blank E F Standard Device: Endurance = 10K Write Cycles; Write Time = 10 ms High Endurance Option: Endurance = 100K Write Cycles Fast Write Option: Write Time = 3 ms
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27.2
tACC (ns) 150
Green Package Option (Pb/Halide-free)
ICC (mA) Active 50 Standby 0.2 Ordering Code AT28C256(E, F)-15JU AT28C256(E, F)-15PU AT28C256(E, F)-15SU AT28C256(E, F)-15TU Package 32J 28P6 28S 28T Operation Range Industrial (-40 C to 85 C)
Package Type 32J 28P6 28S 28T 32-lead, Plastic J-leaded Chip Carrier (PLCC) 28-lead, 0.600" Wide, Plastic Dual Inline Package (PDIP) 28-lead, 0.300" Wide, Plastic Gull Wing Small Outline (SOIC) 28-lead, Plastic Thin Small Outline Package (TSOP) Options Blank F Standard Device: Endurance = 10K Write Cycles; Write Time = 10 ms Fast Write Option: Write Time = 3 ms
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28. Valid Part Numbers
The following table lists standard and green Atmel products that can be ordered.
Device Numbers AT28C256 AT28C256E AT28C256F AT28C256 AT28C256E AT28C256F AT28C256 AT28C256E AT28C256F
Speed 15 15 15 20 20 20 25 25 25
Package and Temperature Combinations JI, JU, PI, PU, SI, SU, TI, TU, DM/883, FM/883, LM/883, UM/883 JI, JU, PI, PU, SI, SU, TI, TU, DM/883, FM/883, LM/883, UM/883 JI, JU, PI, PU, SI, SU, TI, TU, DM/883, FM/883, LM/883, UM/883 DM/883, FM/883, LM/883, UM/883 DM/883, FM/883, LM/883, UM/883 DM/883, FM/883, LM/883, UM/883 DM/883, FM/883, LM/883, UM/883 DM/883, FM/883, LM/883, UM/883 DM/883, FM/883, LM/883, UM/883
29. Die Products
Reference Section: Parallel EEPROM Die Products
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Packaging Information
29.1 28D6 - Cerdip
Dimensions in Millimeters and (Inches). Controlling dimension: Inches. MIL-STD 1835 D-10 Config A (Glass Sealed)
37.85(1.490) 36.58(1.440)
PIN 1
15.49(0.610) 12.95(0.510)
33.02(1.300) REF 5.72(0.225) MAX SEATING PLANE 5.08(0.200) 3.18(0.125) 2.54(0.100)BSC 1.65(0.065) 1.14(0.045) 15.70(0.620) 15.00(0.590) 0.46(0.018) 0.20(0.008) 0.127(0.005)MIN
1.52(0.060) 0.38(0.015) 0.66(0.026) 0.36(0.014)
0~ 15 REF
17.80(0.700) MAX
10/23/03 2325 Orchard Parkway San Jose, CA 95131 TITLE 28D6, 28-lead, 0.600" Wide, Non-windowed, Ceramic Dual Inline Package (Cerdip) DRAWING NO. 28D6 REV. B
R
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29.2
28F - Flatpack
Dimensions in Millimeters and (Inches). Controlling dimension: Inches. MIL-STD 1835 F-12 Config B
PIN #1 ID
9.40(0.370) 6.35(0.250) 0.56(0.022) 0.38(0.015) 1.27(0.050) BSC
18.49(0.728) 18.08(0.712)
1.14(0.045) MAX
10.57(0.416) 9.75(0.384)
0.23(0.009) 0.10(0.004)
3.02(0.119) 2.29(0.090)
1.96(0.077) 1.09(0.043) 7.26(0.286) 6.96(0.274) 1.14(0.045) 0.660(0.026)
10/21/03 2325 Orchard Parkway San Jose, CA 95131 TITLE 28F, 28-lead, Non-windowed, Ceramic Bottom-brazed Flat Package (FlatPack) DRAWING NO. 28F REV. B
R
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29.3 32J - PLCC
1.14(0.045) X 45
PIN NO. 1 IDENTIFIER
1.14(0.045) X 45 0.318(0.0125) 0.191(0.0075)
E1 B
E
B1
E2
e D1 D A A2 A1
0.51(0.020)MAX 45 MAX (3X)
COMMON DIMENSIONS (Unit of Measure = mm) SYMBOL
D2
MIN 3.175 1.524 0.381 12.319 11.354 9.906 14.859 13.894 12.471 0.660 0.330
NOM - - - - - - - - - - - 1.270 TYP
MAX 3.556 2.413 - 12.573 11.506 10.922 15.113 14.046 13.487 0.813 0.533
NOTE
A A1 A2 D D1 D2
Note 2
Notes:
1. This package conforms to JEDEC reference MS-016, Variation AE. 2. Dimensions D1 and E1 do not include mold protrusion. Allowable protrusion is .010"(0.254 mm) per side. Dimension D1 and E1 include mold mismatch and are measured at the extreme material condition at the upper or lower parting line. 3. Lead coplanarity is 0.004" (0.102 mm) maximum.
E E1 E2 B B1 e
Note 2
10/04/01 2325 Orchard Parkway San Jose, CA 95131 TITLE 32J, 32-lead, Plastic J-leaded Chip Carrier (PLCC) DRAWING NO. 32J REV. B
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0006K-PEEPR-01/08
29.4
32L - LCC
Dimensions in Millimeters and (Inches). Controlling dimension: Inches. MIL-STD 1835 C-12
11.63(0.458) 11.23(0.442) 2.54(0.100) 2.16(0.085)
14.22(0.560) 13.72(0.540)
PIN 1 1.40(0.055) 1.14(0.045)
1.91(0.075) 1.40(0.055)
2.41(0.095) 1.91(0.075)
INDEX CORNER
0.635(0.025) X 45 0.381(0.015) 0.305(0.012) RADIUS 0.178(0.007)
10.16(0.400) BSC
0.737(0.029) 0.533(0.021)
1.27(0.050) TYP
1.02(0.040) X 45 2.16(0.085) 1.65(0.065)
7.62(0.300) BSC
10/21/03 2325 Orchard Parkway San Jose, CA 95131 TITLE 32L, 32-pad, Non-windowed, Ceramic Lid, Leadless Chip Carrier (LCC) DRAWING NO. 32L REV. B
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AT28C256
0006K-PEEPR-01/08
AT28C256
29.5 28P6 - PDIP
D
PIN 1
E1
A
SEATING PLANE
L B1 e E B
A1
C eB
0 ~ 15
REF
SYMBOL A A1 D E E1 B
COMMON DIMENSIONS (Unit of Measure = mm) MIN - 0.381 36.703 15.240 13.462 0.356 1.041 3.048 0.203 15.494 NOM - - - - - - - - - - 2.540 TYP MAX 4.826 - 37.338 15.875 13.970 0.559 1.651 3.556 0.381 17.526 Note 2 Note 2 NOTE
Notes:
1. This package conforms to JEDEC reference MS-011, Variation AB. 2. Dimensions D and E1 do not include mold Flash or Protrusion. Mold Flash or Protrusion shall not exceed 0.25 mm (0.010").
B1 L C eB e
09/28/01 2325 Orchard Parkway San Jose, CA 95131 TITLE 28P6, 28-lead (0.600"/15.24 mm Wide) Plastic Dual Inline Package (PDIP) DRAWING NO. 28P6 REV. B
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0006K-PEEPR-01/08
29.6
28S - SOIC
Dimensions in Millimeters and (Inches). Controlling dimension: Millimeters.
0.51(0.020) 0.33(0.013)
7.60(0.2992) 10.65(0.419) 7.40(0.2914) 10.00(0.394)
PIN 1
1.27(0.50) BSC
TOP VIEW
18.10(0.7125) 17.70(0.6969)
2.65(0.1043) 2.35(0.0926)
0.30(0.0118) 0.10(0.0040)
SIDE VIEWS
0 ~ 8
0.32(0.0125) 0.23(0.0091) 1.27(0.050) 0.40(0.016)
8/4/03 2325 Orchard Parkway San Jose, CA 95131 TITLE 28S, 28-lead, 0.300" Body, Plastic Gull Wing Small Outline (SOIC) JEDEC Standard MS-013 DRAWING NO. 28S REV. B
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AT28C256
0006K-PEEPR-01/08
AT28C256
29.7 28T - TSOP
PIN 1
0 ~ 5
c
Pin 1 Identifier Area D1 D
L
e
b
L1
E
A2
A
SEATING PLANE
GAGE PLANE
A1
SYMBOL A A1 A2 Notes: 1. This package conforms to JEDEC reference MO-183. 2. Dimensions D1 and E do not include mold protrusion. Allowable protrusion on E is 0.15 mm per side and on D1 is 0.25 mm per side. 3. Lead coplanarity is 0.10 mm maximum. D D1 E L L1 b c e
COMMON DIMENSIONS (Unit of Measure = mm) MIN - 0.05 0.90 13.20 11.70 7.90 0.50 NOM - - 1.00 13.40 11.80 8.00 0.60 0.25 BASIC 0.17 0.10 0.22 - 0.55 BASIC 0.27 0.21 MAX 1.20 0.15 1.05 13.60 11.90 8.10 0.70 Note 2 Note 2 NOTE
12/06/02 2325 Orchard Parkway San Jose, CA 95131 TITLE 28T, 28-lead (8 x 13.4 mm) Plastic Thin Small Outline Package, Type I (TSOP) DRAWING NO. 28T REV. C
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0006K-PEEPR-01/08
29.8
28U - PGA
Dimensions in Millimeters and (Inches). Controlling dimension: Inches.
7.26(0.286) 6.50(0.256) 13.74(0.540) 13.36(0.526) 2.57(0.101) 2.06(0.081) 1.40(0.055) 1.14(0.045)
15.24(0.600) 14.88(0.586)
0.58(0.023) 0.43(0.017)
3.12(0.123) 2.62(0.103) 1.83(0.072) 1.57(0.062) 14.17(0.558) 13.77(0.542) 2.54(0.100) TYP
16.71(0.658) 16.31(0.642)
12.70(0.500) TYP
2.54(0.100) TYP 10.41(0.410) 9.91(0.390)
10/21/03 2325 Orchard Parkway San Jose, CA 95131 TITLE 28U, 28-pin, Ceramic Pin Grid Array (PGA) DRAWING NO. 28U REV. B
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AT28C256
0006K-PEEPR-01/08
Headquarters
Atmel Corporation 2325 Orchard Parkway San Jose, CA 95131 USA Tel: 1(408) 441-0311 Fax: 1(408) 487-2600
International
Atmel Asia Room 1219 Chinachem Golden Plaza 77 Mody Road Tsimshatsui East Kowloon Hong Kong Tel: (852) 2721-9778 Fax: (852) 2722-1369 Atmel Europe Le Krebs 8, Rue Jean-Pierre Timbaud BP 309 78054 Saint-Quentin-enYvelines Cedex France Tel: (33) 1-30-60-70-00 Fax: (33) 1-30-60-71-11 Atmel 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
Product Contact
Web Site www.atmel.com Technical Support p_eeprom@atmel.com Sales Contact www.atmel.com/contacts
Literature Requests www.atmel.com/literature
Disclaimer: The information in this document is provided in connection with Atmel products. No license, express or implied, by estoppel or otherwise, to any intellectual property right is granted by this document or in connection with the sale of Atmel products. EXCEPT AS SET FORTH IN ATMEL'S TERMS AND CONDITIONS OF SALE LOCATED ON ATMEL'S WEB SITE, ATMEL ASSUMES NO LIABILITY WHATSOEVER AND DISCLAIMS ANY EXPRESS, IMPLIED OR STATUTORY WARRANTY RELATING TO ITS PRODUCTS INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT, CONSEQUENTIAL, PUNITIVE, SPECIAL OR INCIDENTAL DAMAGES (INCLUDING, WITHOUT LIMITATION, DAMAGES FOR LOSS OF PROFITS, BUSINESS INTERRUPTION, OR LOSS OF INFORMATION) ARISING OUT OF THE USE OR INABILITY TO USE THIS DOCUMENT, EVEN IF ATMEL HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. Atmel makes no representations or warranties with respect to the accuracy or completeness of the contents of this document and reserves the right to make changes to specifications and product descriptions at any time without notice. Atmel does not make any commitment to update the information contained herein. Unless specifically provided 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 use as components in applications intended to support or sustain life.
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0006K-PEEPR-01/08

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