4256BWP Datasheet PDF – 256-Kbit serial I2C bus EEPROM

This post describes for the semiconductor 4256BWP, M24256-BW.

The function of this semiconductor is 256-Kbit serial I2C bus EEPROM.

The manufacturer of this part is STMicroelectronics.

See the preview image and the 4256BWP Datasheet PDF file for more information.

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4256BWP datasheet pinout


The 4256BWP is a 256-Kbit I2C-compatible EEPROM (Electrically Erasable PROgrammable
Memory) organized as 32 K × 8 bits. The M24256-BW can operate with a supply voltage from 2.5 V to 5.5 V, the M24256-BR and M24256-DR can operate with a supply voltage from 1.8 V to 5.5 V, and the M24256-BF and M24256-DF can operate with a supply voltage from 1.7 V to 5.5 V. All these devices operate with a clock frequency of 1 MHz (or less), over an ambient temperature range of –40 °C / +85 °C.
The M24256-D 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.

M24256-BW M24256-BR M24256-BF M24256-DR M24256-DF 256-Kbit serial I²C bus EEPROM TSSOP8 (DW) 169 mil width SO8 (MN) 150 mil width UFDFPN8 (MC) WLCSP (CS) Datasheet – production data Features • Compatible with all I2C bus modes: – 1 MHz – 400 kHz – 100 kHz • Memory array: – 256 Kbit (32 Kbytes) of EEPROM – Page size: 64 bytes – Additional Write lockable page (M24256-D order codes) • Single supply voltage and high speed: – 1 MHz clock from 1.7 V to 5.5 V • Write: – Byte Write within 5 ms – Page Write within 5 ms • Operating temperature range: – from -40 °C up to +85 °C • Random and sequential Read modes • Write protect of the whole memory array • Enhanced ESD/Latch-Up protection • More than 4 million Write cycles • More than 200-years data retention Packages • SO8 ECOPACK2® • TSSOP8 ECOPACK2® • UFDFPN8 ECOPACK2® • WLCSP ECOPACK2® • Unsawn wafer (each die is tested) Unsawn wafer June 2015 This is information on a product in full […]


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4256BWP Datasheet PDF