STMicroelectronics M24C04-RMC6TG

Overview

M24C04-RMC6TG from STMicroelectronics is a 4-Kbit I²C-compatible serial EEPROM organized as 512 × 8 bits, operating at up to 400 kHz clock frequency with 1.8 V to 5.5 V single-supply voltage, 5 ms max byte/page write time, and -40 °C to +85 °C industrial temperature range. It serves as nonvolatile configuration storage in microcontroller-based systems requiring reliable parameter retention across power cycles.

For engineers reviewing the M24C04-RMC6TG datasheet, M24C04-RMC6TG pinout, M24C04-RMC6TG application, or M24C04-RMC6TG equivalent, key selection criteria include I²C bus compatibility (100/400 kHz), 16-byte page size, write-protect via WC pin, ECOPACK2-compliant TSSOP8 package, and guaranteed 4 million write cycles with 200-year data retention at 55 °C.

Technical Context

The M24C04-RMC6TG implements a standard I²C slave protocol with 7-bit device address (1010xxxR/W) and supports random, current-address, and sequential read modes. Its internal architecture includes an HV generator for EEPROM programming, page latches for burst writes, and a start/stop detector synchronized to SCL.

Write control (WC) enables hardware-level memory protection: when high, all write operations are inhibited regardless of address or data; when low or floating, byte and page writes proceed with ACK/NACK handshaking. Chip enable pins E1/E2 configure the device address bits b3–b2, though they are unconnected in the TSSOP8 variant used in this part number.

Key Specifications

Pinout & Package

Package: TSSOP8 (ECOPACK2), 169 mil width, RoHS-compliant and halogen-free.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar serial EEPROM applications.

Compared with AT24C04D-SSHM-T and BR24G04NUX-5TR, the M24C04-RMC6TG uniquely combines guaranteed 400 kHz I²C timing compliance, explicit WC pin labeling, and ECOPACK2 TSSOP8 packaging-making it optimal for industrial designs requiring traceable environmental compliance and deterministic hardware-level write security.

Availability

M24C04-RMC6TG is available at Aetrix Electronics and suitable for industrial sensor nodes, automotive body control modules, smart meter firmware patch storage, and medical diagnostic device calibration requiring stable component supply and full lifecycle support.

Supply support for M24C04-RMC6TG includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, power ICs, sensors, and memory products for industrial, automotive, and consumer markets.

The M24C04-RMC6TG belongs to ST's serial EEPROM product line, engineered specifically for robust, low-power, I²C-based nonvolatile storage in space-constrained embedded systems where reliability and long-term data integrity are mandatory.

FAQ

What is the function of the WC pin on the M24C04-RMC6TG?

The WC (Write Control) pin is an active-high hardware lock that disables all write operations-including byte and page writes-to the entire 4-Kbit memory array when driven high. Unlike software-based write protection, WC operates independently of I²C commands and prevents accidental or malicious modification even if the device is addressed correctly. When WC is low or floating, normal write operations proceed with standard ACK/NACK handshaking.

Does the M24C04-RMC6TG support 1 MHz I²C operation?

No-the M24C04-RMC6TG is specified for I²C bus speeds up to 400 kHz only, as confirmed in DS9387 Rev 6 Section 8 AC parameters. Attempting 1 MHz operation violates timing specifications and may result in unreliable data transfer or ACK failures. For 1 MHz support, consider alternatives like AT24C04D-SSHM-T or BR24G04NUX-5TR, which explicitly guarantee 1 MHz timing margins.

How does the M24C04-RMC6TG handle power-up sequencing?

The device integrates an internal power-on-reset (POR) circuit that holds the EEPROM in reset until VCC reaches a stable threshold below the minimum operating voltage (1.8 V). During this period, it ignores all I²C commands. Once VCC stabilizes within 1.8–5.5 V, the device enters standby mode and responds to valid Start conditions. This prevents spurious writes during brown-out or slow-ramp power events.

Can the M24C04-RMC6TG be used in the DFN5 package variant?

No-the M24C04-RMC6TG specifically uses the TSSOP8 (169 mil width) package, as indicated by the "MC6TG" suffix per ST's ordering matrix. The DFN5 variant has different pin count (5-pin), omits E1/E2 connections, and uses distinct marking and tape/reel packaging. Substituting packages without redesigning PCB layout and verifying I²C signal integrity risks functional failure.