M24256E-FDW6TP datasheet(2/46 Pages) STMICROELECTRONICS

Teilenummer	M24256E-FDW6TP

Bauteilbeschribung	256-Kbit serial I²C bus EEPROM with configurable device address and preprogrammed device address

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Hersteller	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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Description

The M24256E-F is a 256-Kbit I2C-compatible EEPROM (electrically erasable programmable read only memory)

organized as 32 K × 8 bits.

The M24256E-F can operate with a supply voltage from 1.65 V to 5.5 V, with a clock frequency of 1 MHz (or less),

over an ambient temperature range of -40 °C/+85 °C. It can also operate down to 1.6 V, under some restricting

conditions.

The M24256E-F offers an additional page of 64 bytes, named identification page, which can be used to store

sensitive application parameters which can be (later) permanently locked in read-only mode.

The M24256E-F offers also an additional 8-bit register, named the configurable device address (CDA) register

authorizing the user, through software, to configure up to eight possibilities of chip enable address.

On demand, the eeprom can be delivered by STMicroelectronics with a preprogrammed and locked device

address (001).

1.1

Device block diagram

Figure 1. Logic diagram

VCC

VSS

SCL

M24256E-F

SDA

Table 1. Signal names

Signal name

Function

Direction

SDA

Serial data

I/O

SCL

Serial clock

Input

VCC

Supply voltage

VSS

Ground

Write control

Input

M24256E-F

Description

DS12687 - Rev 3

page 2/46

M24256E-FDW6TP Datenblatt(PDF) 2 Page - STMicroelectronics