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AT28C64

ATMEL Corporation
Part Number AT28C64
Manufacturer ATMEL Corporation
Description 64K (8K x 8) Parallel EEPROMs
Published Mar 26, 2005
Detailed Description Features • Fast Read Access Time – 120 ns • Fast Byte Write – 200 µs or 1 ms • Self-timed Byte Write Cycle – Internal Ad...
Datasheet PDF File AT28C64 PDF File

AT28C64
AT28C64

Overview
Features • Fast Read Access Time – 120 ns • Fast Byte Write – 200 µs or 1 ms • Self-timed Byte Write Cycle – Internal Address and Data Latches – Internal Control Timer – Automatic Clear Before Write • Direct Microprocessor Control – READY/BUSY Open Drain Output – DATA Polling • Low Power – 30 mA Active Current – 100 µA CMOS Standby Current • High Reliability – Endurance: 104 or 105 Cycles – Data Retention: 10 Years • 5V ± 10% Supply • CMOS and TTL Compatible Inputs and Outputs • JEDEC Approved Byte-wide Pinout • Commercial and Industrial Temperature Ranges Description The AT28C64 is a low-power, high-performance 8,192 words by 8-bit nonvolatile electrically erasable and programmable read only memory with popular, easy-to-use features.
The device is manufactured with Atmel’s reliable nonvolatile technology.
(continued) Pin Configurations Pin Name A0 - A12 CE OE WE I/O0 - I/O7 RDY/BUSY NC DC Function Addresses Chip Enable Output Enable Write Enable Data Inputs/Outputs Ready/Busy Output No Connect Don’t Connect TSOP Top View PDIP, SOIC Top View RDY/BUSY (or NC) 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 VCC 27 WE 26 NC 25 A8 24 A9 23 A11 22 OE 21 A10 20 CE 19 I/O7 18 I/O6 17 I/O5 16 I/O4 15 I/O3 LCC, PLCC Top View 64K (8K x 8) Parallel EEPROMs AT28C64 AT28C64X A7 A12 RDY/BUSY (or NC) DC VCC WE NC OE A11 A9 A8 NC WE VCC RDY/BUSY (or NC) A12 A7 A6 A5 A4 A3 1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 A10 27 CE 26 I/O7 25 I/O6 24 I/O5 23 I/O4 22 I/O3 21 GND 20 I/O2 19 I/O1 18 I/O0 17 A0 16 A1 15 A2 4 3 2 1 32 31 30 A6 5 A5 6 A4 7 A3 8 A2 9 A1 10 A0 11 NC 12 I/O0 13 29 A8 28 A9 27 A11 26 NC 25 OE 24 A10 23 CE 22 I/O7 21 I/O6 I/O1 14 I/O2 15 VSS 16 DC 17 I/O3 18 I/O4 19 I/O5 20 Note: PLCC package pins 1 and 17 are DON’T CONNECT.
Rev.
0001H–12/99 1 The AT28C64 is accessed like a Static RAM for the read or write cycles without the need for external components.
During a byte write, the address and data are latched internall...


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