STMicroelectronics M24512-WMN6TP

Overview

M24512-WMN6TP from STMicroelectronics is a 512-Kbit (64 Kbyte) I²C-compatible serial EEPROM organized as 64 K × 8 bits, operating from 2.5 V to 5.5 V supply with 1 MHz clock support. It features 128-byte page write capability, >4 million write cycles, and 200-year data retention. Used for firmware parameter storage in industrial controllers where nonvolatile configuration persistence is required.

For engineers reviewing the M24512-WMN6TP datasheet, M24512-WMN6TP pinout, M24512-WMN6TP application, or M24512-WMN6TP equivalent, key selection factors include its TSSOP8 ECOPACK2® package, WC-controlled full-array write protection, I²C bus mode compatibility (100 kHz/400 kHz/1 MHz), and identification page lockability (M24512-D variant only).

Technical Context

The M24512-WMN6TP implements a slave-only I²C interface with hardware address decoding via E0–E2 pins, supporting up to eight devices on one bus. Its internal ECC logic corrects single-bit errors per 4-byte group without protocol overhead, improving read reliability in electrically noisy environments.

Write control (WC) enables hardware-level memory locking: when driven high, all write operations-including byte, page, and identification page writes-are inhibited. The device includes an integrated power-on-reset circuit ensuring no spurious writes during VCC ramp-up or ramp-down.

Key Specifications

Pinout & Package

Package: TSSOP8 (DW), 169 mil width, ECOPACK2® RoHS-compliant surface-mount package with 0.65 mm pitch.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AT24C512-MAHM-T and BR24G512FJ-WE2, the M24512-WMN6TP uniquely combines hardware-level full-memory write disable (WC), on-the-fly ECC, and TSSOP8 ECOPACK2® packaging - making it optimal for safety-critical or high-reliability industrial deployments where data integrity and tamper resistance are mandatory.

Availability

M24512-WMN6TP is available at Aetrix Electronics and suitable for industrial PLCs, smart meters, medical infusion pumps, and automotive body control modules requiring stable component supply across multi-year production cycles.

Supply support for M24512-WMN6TP 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 solutions for industrial, automotive, and consumer markets.

The M24512 belongs to ST's serial EEPROM product line, engineered specifically for high-reliability, long-lifecycle applications demanding guaranteed data integrity, extended temperature operation, and hardware-enforced write protection.

FAQ

What is the function of the WC pin on M24512-WMN6TP?

The WC (Write Control) pin is an active-high hardware lock that disables all write operations-including byte, page, and identification page writes-when driven high. When WC is low or floating, writes are enabled. This provides deterministic, glitch-immune protection against unintended memory modification during power transitions or software faults, independent of I²C command execution.

Does M24512-WMN6TP support 1 MHz I²C operation across its full voltage range?

Yes, M24512-WMN6TP supports 1 MHz I²C clock operation from 2.5 V to 5.5 V supply voltage. This is confirmed in the DS6520 Rev 31 datasheet Section 1 (Description) and Table 10 (AC Characteristics), where tBUF, tLOW, and tHIGH timing parameters are specified for 1 MHz at VCC = 2.5 V, 3.3 V, and 5.5 V - enabling high-speed parameter loading in time-constrained embedded systems.

How does the internal ECC work, and does it affect memory access timing?

The M24512-WMN6TP implements transparent ECC that corrects single-bit errors per 4-byte group during read operations. It operates entirely within the memory array logic and adds no extra clock cycles or latency to standard I²C reads. ECC is invisible to the host - no additional commands, registers, or timing adjustments are required. Writes to any byte automatically update its 3 associated group bytes to maintain ECC parity.

Can M24512-WMN6TP be used interchangeably with M24512-R or M24512-DF variants?

No - M24512-WMN6TP (W version) is rated for 2.5–5.5 V operation, while M24512-R supports 1.8–5.5 V and M24512-DF supports 1.7–5.5 V. Substituting W for R or DF in low-voltage systems (<2.5 V) will cause functional failure. Pinout and instruction set are identical, but voltage range mismatch invalidates drop-in replacement claims. Always verify VCC min/max against target system rail.