W29C020 Overview
The W29C020 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.
W29C020 Key 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 µS
- Optional software-protected data write
- Fast chip-erase operation: 50 mS
- Two 8 KB boot blocks with lockout
- Typical page write (erase/program) cycles
- Read access time: 70/90/120 nS