STMicroelectronics M24C08-RMC6TG

Overview

M24C08-RMC6TG from STMicroelectronics is an 8-Kbit I²C-compatible serial EEPROM organized as 1 K × 8 bits, operating from 1.8 V to 5.5 V supply, supporting 400 kHz and 100 kHz I²C bus modes, with 16-byte page write capability and full memory write protection via WC pin - used for configuration storage in industrial controllers, sensor nodes, and power management units.

For engineers reviewing the M24C08-RMC6TG datasheet, M24C08-RMC6TG pinout, M24C08-RMC6TG application, or M24C08-RMC6TG equivalent, key selection considerations include voltage range compatibility (1.8–5.5 V), TSSOP8 package footprint, I²C timing compliance at 400 kHz, and WC-controlled hardware write protection for robust firmware parameter storage.

Technical Context

The M24C08-RMC6TG implements a standard I²C slave protocol with start/stop detection, 7-bit device address plus R/W bit, and ACK/NACK handshaking. It uses internal high-voltage generation for EEPROM programming and includes a power-on-reset (POR) circuit that prevents spurious writes during power ramp-up.

Its memory array supports random and sequential read modes, byte and page write operations (≤16 bytes/page), and automatic address incrementing. The WC pin enables hardware-level write protection of the entire 8-Kbit array, while E2 sets the device address bit b3 - both pins are unconnected in TSSOP8 variant M24C08-RMC6TG per DS9362 Rev 7 Figure 2 and Section 4.5.

Key Specifications

Pinout & Package

TSSOP8 (DW) package, 169 mil width, RoHS-compliant and halogen-free (ECOPACK2). Pin 1 marked by notch or dot; pin numbering follows standard counter-clockwise convention from top view.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AT24C08D-SSHM-T and BR24G08NUX-10, M24C08-RMC6TG provides superior write endurance (4M vs. 1M cycles), longer data retention (200 vs. 100 years), and true hardware write disable via WC pin - critical for industrial safety-critical configuration storage.

Availability

M24C08-RMC6TG is available at Aetrix Electronics and suitable for industrial PLCs, smart sensor nodes, power supply sequencers, and IoT edge devices requiring stable component supply, long-lifecycle support, and guaranteed ECOPACK2 RoHS/halogen-free compliance.

Supply support for M24C08-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.

M24C08-RMC6TG belongs to the M24Cxx family of I²C EEPROMs engineered for robust, low-voltage, high-reliability nonvolatile storage in space- and power-constrained embedded systems.

FAQ

What is the function of the WC pin on M24C08-RMC6TG?

The WC (Write Control) pin is an active-high hardware write protect input. When driven high, it disables all write operations (byte and page) to the entire 8-Kbit memory array, regardless of I²C command. This prevents accidental overwrites during power transients or firmware errors. In M24C08-RMC6TG, WC is accessible and must be pulled low or left floating to enable writes.

Does M24C08-RMC6TG support 400 kHz I²C communication in all supply voltage conditions?

Yes - M24C08-RMC6TG supports full 400 kHz fast-mode I²C operation across its entire specified supply range of 1.8 V to 5.5 V and temperature range of −40 °C to +85 °C, as confirmed in Table 7 of DS9362 Rev 7. AC timing parameters including t_BUF, t_HD;STA, and t_LOW are guaranteed under these conditions.

How is device addressing configured for M24C08-RMC6TG in TSSOP8 package?

In the TSSOP8 package (M24C08-RMC6TG), E2 is connected and must be tied to VSS or VCC to set device address bit b3. With E2 = VSS (logic 0), the 7-bit device address becomes 10100xx (where xx = A9,A8). This allows up to four devices on the same I²C bus using different A9/A8 combinations, per Table 3 in DS9362 Rev 7.

What is the maximum number of bytes that can be written in a single page write operation?

M24C08-RMC6TG supports up to 16 bytes per page write operation, aligned to 16-byte boundaries (addresses 0x00–0x0F, 0x10–0x1F, etc.). Writing more than 16 bytes triggers automatic rollover to the start of the same page. Page write completes within 5 ms, and the internal address counter increments automatically after each successful write.