器件名称: W29C022
功能描述: 256K x 8 CMOS FLASH MEMORY
文件大小: 166.74KB 共20页
简 介:W29C022 256K × 8 CMOS FLASH MEMORY
GENERAL DESCRIPTION
The W29C022 is a 2-megabit, 5-volt only CMOS flash memory organized as 256K × 8 bits. The device can be written (erased and programmed) in-system with a standard 5V power supply. A 12-volt VPP is not required. The unique cell architecture of the W29C022 results in fast write (erase/ program) operations with extremely low current consumption compared to other comparable 5-volt flash memory products. The device can also be written (erased and programmed) by using standard EPROM programmers.
FEATURES
Single 5-volt write (erase and program) operations Fast page-write operations 128 bytes per page Page write (erase/program) cycle: 10 mS (max.) Effective byte-write (erase/program) cycle time: 39 S Optional software-protected data write
Software and hardware data protection Low power consumption Active current: 25 mA (typ.) Standby current: 20 A (typ.)
Automatic write (erase/program) timing with internal VPP generation End of write (erase/program) detection Toggle bit Data polling
Fast chip-erase operation: 50 mS Two 8 KB boot blocks with lockout Typical page write (erase/program) cycles: 1K Ten-year data retention
Latched address and data All inputs and outputs directly TTL compatible JEDEC standard byte-wide pinouts
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Publication Release Date: March 26, 2002 Revision A3
W29C022
PIN CONFIGURATIONS BLOCK DIAGRAM
NC A16 A15 A12 A7 A6 A5 A4 A3 A2 A1 A0 DQ0 DQ1 DQ2 Vss
1 2 3 4 5 6 7 8 9 10 11 ……
