M24256E-FDW6TP [STMicroelectronics]

The M24256E-F is a 256-Kbit I²C-compatible EEPROM (electrically erasable programmable memory) organized as 32 K x 8 bits. It can operate with a supply voltage from 1.65 V to 5.5 V with a clock frequency up to 1 MHz, over an ambient temperature ranging from -40 °C to +85 °C. It can also operate down to 1.6 V under some restricting conditions.

The device offers an additional 8-bit register, called the configurable device address (CDA) register. This page authorizes the user, through software, to configure up to eight possible chip enable address.

The device also offers an additional 64-byte page, called the identification page. This page can be used to store sensitive application parameters, which can later be permanently locked in read-only mode.

On demand, the EEPROM can be delivered with a preprogrammed and locked device address.

• I²C interface
  • Compatible with the following I²C bus modes:
    • 1 MHz (Fast-mode Plus)
    • 400 kHz (Fast-mode)
    • 100 kHz (Standard-mode)
• Memory
  • 256-Kbit (32-Kbyte) of EEPROM
  • Page size: 64-byte
  • Additional 64-byte identification page
• Supply voltage
  • Wide voltage range: 1.6 V to 5.5 V
• Temperature
  • Operating temperature range: -40 °C to +85 °C
• Fast write cycle time
  • Byte and page write within 5 ms (typically 3.2 ms)
• Performance
  • Enhanced ESD/latch-up protection
  • More than 4 million write cycles
  • More than 200-year data retention
  • Fast wake-up time (less than 5 μs)
• Ultralow power current consumption
  • 310 nA (typical) in standby mode
  • 100 μA (typical) for read current
  • 150 μA (typical) for write current
• Advanced features
  • Configurable device address register
  • Preprogrammed device address
  • Hardware write protection of the whole memory array
  • Random and sequential read modes
• Package
  • SO8N, TSSOP8, UFDFPN8, and UFDFPN5 (ECOPACK2)
  • Unsawn wafer (each die is tested)