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M24M01-RDW6TP

1Mbit I2C EEPROM, 1MHz, 256-byte page, 1.8-5.5V, TSSOP-8L, NRND

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Manufacturer Part：

M24M01-RDW6TP

Package：

TSSOP-8L (3.0 x 4.4 x 1.0 mm)

Brand：

Product Categories：

Integrated Circuits ICs

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Description

Product Overview

The M24M01-RDW6TP from STMicroelectronics is a 1 Mbit (128 KB) serial I2C bus EEPROM with a 1 MHz clock rate capability. It operates from 1.8V to 5.5V over a -40°C to +85°C temperature range. The device features a 256-byte page write, hardware write protection, and is packaged in TSSOP-8L. Status: NRND (Not Recommended for New Designs).

Key Specifications

Memory Size	1 Mbit (128 KB)
Interface	I2C (up to 1 MHz Fast-mode Plus)
Organization	128 KB x 8 bits
Page Size	256 bytes
Supply Voltage	1.8V to 5.5V
Write Cycle Time	5 ms (byte/page write)
Write Endurance	4 million cycles at 25°C
Data Retention	200 years
Operating Temperature	-40°C to +85°C
Package	TSSOP-8L
Status	NRND

Features

1 Mbit serial I2C bus EEPROM
1 MHz Fast-mode Plus I2C clock rate
256-byte page write for efficient data storage
Hardware write protect (WP) pin
Additional device select address bits (E0, E1, E2)
Self-timed write cycle: 5 ms maximum
Random and sequential read modes
4 million write cycle endurance
200-year data retention
ESD protection: 4000V HBM

Applications

Industrial equipment configuration storage
Automotive diagnostic parameter retention
Consumer electronics preference storage
Networking equipment MAC/address tables
Medical device calibration data
Smart meter data logging

Product Introduction:M24M01-RDW6TP Product Introduction

The M24M01-RDW6TP is a 1 Mbit (128 KB) electrically erasable programmable memory (EEPROM) from STMicroelectronics, accessed through a standard I2C bus interface at clock rates up to 1 MHz (Fast-mode Plus). The device is organized as 131072 x 8 bits and supports a 256-byte page write mode for efficient data storage. The M24M01-R uses three device select address bits (E0, E1, E2) allowing up to eight devices on the same I2C bus. A hardware Write Protect (WP) pin prevents inadvertent writes to the entire memory. The device features 4 million write cycle endurance and 200-year data retention. Note: This product is NRND (Not Recommended for New Designs); the M24M01-DR replacement is recommended for new applications. The DW6TP suffix denotes the TSSOP-8L package with tape and reel packing.

Working Principle:M24M01-RDW6TP Working Principle

The M24M01-R operates through three key subsystems:

1. I2C Interface: The device communicates via a standard 2-wire I2C bus (SDA, SCL). The 7-bit device address consists of a 1010 binary prefix, three device select bits (E0-E2), and a read/write bit. The 1 Mbit address space requires 17 bits, sent as two address bytes after the device address byte. The device supports Standard-mode (100 kHz), Fast-mode (400 kHz), and Fast-mode Plus (1 MHz) clock rates.

2. Memory Array and Page Write: The 128 KB EEPROM array is organized in 256-byte pages. A page write operation allows writing up to 256 bytes in a single write cycle. During the 5 ms self-timed write cycle, the device does not respond to I2C commands. The master can poll the device using acknowledge polling to determine write completion. Sequential read operations enable continuous data readout from any starting address.

3. Write Protection: The WP pin, when driven high, prevents any write operation to the entire memory array, providing hardware-level data protection against accidental or malicious writes. Three device select address pins (E0, E1, E2) allow up to eight M24M01-R devices to share the same I2C bus without address conflicts.

Pin Description:M24M01-RDW6TP Pin Definition and Functions

Pin	Name	Type	Function
1	E0	Input	Device select address bit 0 (tie to VCC or VSS)
2	E1	Input	Device select address bit 1
3	E2	Input	Device select address bit 2
4	VSS	Power	Ground
5	SDA	I/O	I2C serial data (open-drain, bidirectional)
6	SCL	Input	I2C serial clock
7	WP	Input	Write protect (active high; tie to VSS for normal operation)
8	VCC	Power	Supply voltage (1.8–5.5V)

Application Scenarios:In which products and applications isM24M01-RDW6TP used

Industrial equipment: 128 KB capacity stores extensive configuration tables, calibration curves, and event logs with 200-year retention and I2C bus speeds up to 1 MHz
Automotive systems: Up to 8 devices on a single I2C bus using E0-E2 address pins for multi-zone parameter storage in infotainment and body control modules
Networking equipment: MAC address tables, boot configuration, and serial number storage with hardware write protect (WP) pin preventing accidental data corruption
Medical devices: Calibration coefficients and patient-specific settings stored in 256-byte pages with 4 million write cycle endurance

Alternative Models:What chips are recommended as replacements for M24M01-RDW6TP

Manufacturer	Part Number	Package	Notes
STMicroelectronics	M24M01-DRDW6TP	TSSOP-8L	Direct replacement (active version)
STMicroelectronics	M24M02-DRDW6TP	TSSOP-8L	2 Mbit version, pin compatible
Microchip	24LC1025-I/SN	SOIC-8	1 Mbit, I2C, 400 kHz
onsemi	CAT24C128WI-G	SOIC-8	128 KB, I2C, 1 MHz
ROHM	BR24T128FVT-WE2	TSSOP-8	128 KB, I2C, 1 MHz
Macronix	MX25L12835FMI-10G	SOIC-16	128 Mbit SPI Flash (higher density)