GENERAL DESCRIPTION

The W29C020C is a 2-megabit, 5-volt only CMOS flash memory organized as 256K x 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 W29C020C 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 mS

-  Optional software-protected data write

·  Fast chip-erase operation: 50 mS

·  Two 8 KB boot blocks with lockout

·  Whole chip cycling: 10K (typ.)

·  Read access time: 70/90/120 nS

·  Twenty-year data retention

·  Software and hardware data protection

·  Low power consumption

-  Active current: 25 mA (typ.)

-  Standby current: 20 mA (typ.)

·  Automatic write (erase/program) timing with internal VPP generation

·  End of write (erase/program) detection

-  Toggle bit

-  Data polling

·  Latched address and data

·  All inputs and outputs directly TTL compatible

·  JEDEC standard byte-wide pinouts

·  Available packages: 32-pin 600 mil DIP, 32-pin TSOP, and 32-pin PLCC