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M95256-W：256 Kbit SPI bus EEPROM with high-speed clock

The M95256 devices are Electrically Erasable PROgrammable Memories (EEPROMs) organized as 32768 x 8 bits, accessed through the SPI bus.

The M95256-W can operate with a supply voltage from 2.5 V to 5.5 V, the M95256-R and M95256-DR can operate with a supply voltage from 1.8 V to 5.5 V, and the M95256-DF can operate with a supply voltage from 1.7 V to 5.5 V, over an ambient temperature range of -40 °C / +85 °C.

The M95256-Dx offers an additional page, named the Identification Page (64 bytes). The Identification Page can be used to store sensitive application parameters which can be (later) permanently locked in Read-only mode.

Key Features

• Compatible with the Serial Peripheral Interface (SPI) bus
• Memory array
  • 256 Kb (32 Kbytes) of EEPROM
  • Page size: 64 bytes
• Write
  • Byte Write within 5 ms
  • Page Write within 5 ms
• Additional Write lockable page (Identification page)
• Write Protect: quarter, half or whole memory array
• High-speed clock: 20 MHz
• Single supply voltage:
  • 2.5 V to 5.5 V for M95256-W
  • 1.8 V to 5.5 V for M95256-R and M95256-DR
  • 1.7 V to 5.5 V for M95256-DF
• Operating temperature range: from -40°C up to +85°C
• Enhanced ESD protection
• More than 4 million Write cycles
• More than 200-year data retention
• Packages
  • RoHS compliant and halogen-free (ECOPACK® )

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