M95256-DRE - STMicroelectronics

M95256-DRE 256-Kbit serial SPI bus EEPROM

. . . . 6 2 Signal description . . . . . . . 8 2.1 Serial Data output (Q) . . . . 8 2.2 Serial Data input (D) . . . . . . . . .

Features

• Compatible with the Serial Peripheral Interface (SPI) bus
• Memory array
  – 256 Kbit (32 Kbytes) of EEPROM
  – Page size: 64 bytes
  – Write protection by block: 1/4, 1/2 or whole memory
  – Additional Write lockable Page (Identification page)
• Extended temperature and voltage range
  – Up to 105 °C (VCC from 1.8 V to 5.5 V)
• High speed clock frequency
  – 20 MHz for VCC ≥ 4.5 V
  – 10 MHz for VCC ≥ 2.5 V
  – 5 MHz for VCC ≥ 1.8 V
• Schmitt trigger inputs for noise filtering
• Short Write cycle time
  – Byte Write within 4 ms
  – Page Write within 4 ms
• Write cycle endurance
  – 4 million Write cycles at 25 °.