Datasheet Summary
AT25128B and AT25256B
SPI Serial EEPROM
128K (16,384 x 8), 256K (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 and Standard-voltage Operation
̶ VCC = 1.8V to 5.5V
- 20MHz Clock Rate (5V)
- 64-byte Page Mode and Byte Write Operation
- 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 (5ms max)
- High Reliability
̶ Endurance: 1,000,000 Write Cycles ̶ Data Retention: 100 Years
- Green (Pb/Halogen-free/RoHS pliant) Packaging...
