Datasheet Summary
AT25128B/AT25256B
SPI Serial EEPROM 128 Kbits (16,384 x 8) and 256 Kbits (32,768 x 8)
Features
- Serial Peripheral Interface (SPI) patible
- Supports SPI Modes 0 (0,0) and 3 (1,1):
- Data sheet describes mode 0 operation
- Low-Voltage Operation:
- 1.8V (VCC = 1.8V to 5.5V)
- Industrial Temperature Range: -40°C to +85°C
- 20 MHz Clock Rate (5V)
- 64‑Byte Page Mode
- Block Write Protection:
- Protect 1/4, 1/2 or entire array
- Write-Protect (WP) Pin and Write Disable Instructions for Both Hardware and Software Data
Protection
- Self-Timed Write Cycle within 5 ms Maximum
- ESD Protection > 4,000V
- High Reliability:
- Endurance: 1,000,000 write cycles
- Data retention: 100 years
- Green...
