W29C040 Description
The W29C040 is a 4-megabit, 5-volt only CMOS page mode EEPROM organized as 512K × 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.
W29C040 Key Features
- Single 5-volt write (erase and program) operations Fast page-write operations
- 256 bytes per page
- Page write (erase/program) cycle: 5 mS (typ.)
- Effective byte-write (erase/program) cycle time: 19.5 µS
- Optional software-protected data write
- Active current: 25 mA (typ.)
- Standby current: 20 µA (typ.)
- Toggle bit
- Data polling
- Fast chip-erase operation: 50 mS Two 16 KB boot blocks with lockout Typical page write (erase/program) cycles: 1K/10K (t