Infineon Technologies FM24V02A-G

Overview

FM24V02A-G from Cypress Semiconductor is a 256-Kbit (32K × 8) serial I²C ferroelectric RAM (F-RAM) nonvolatile memory IC, functioning as a drop-in hardware replacement for serial EEPROM in microcontroller-based data logging and industrial control systems. It delivers NoDelay™ writes, 10¹⁴ read/write endurance, 151-year data retention at +85 °C, and operates from 2.0 V to 3.6 V across –40 °C to +85 °C.

For engineers reviewing the FM24V02A-G datasheet, FM24V02A-G pinout, FM24V02A-G application, or FM24V02A-G equivalent, key selection criteria include write-cycle speed without polling, ultra-high endurance under frequent update loads, I²C timing compatibility (100 kHz/400 kHz/3.4 MHz), and WP-controlled hardware write protection across the full memory map.

Technical Context

The FM24V02A-G implements a two-wire I²C interface with slave address format 1010xxxR/W, supporting standard (100 kHz), fast (400 kHz), and high-speed (3.4 MHz) modes - though it does not fully comply with NXP's Fast-mode Plus or High Speed Mode voltage hysteresis specifications. Its internal 32K × 8 F-RAM array enables byte- and page-write operations with zero write latency and no erase cycles.

Addressing uses two-byte addressing with automatic increment and wraparound (0000h → 7FFFh → 0000h); the uppermost address bit is "don't care." Device ID includes manufacturer ID and product ID, readable via dedicated I²C command. Write protection is controlled by the WP pin, which is internally pulled down.

Key Specifications

Pinout & Package

FM24V02A-G is housed in an 8-pin Small Outline Integrated Circuit (SOIC) package with gull-wing leads, RoHS-compliant, 150 mil body width, and standard JEDEC MS-012AC footprint.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AT24C256B-SSHL-T, FM24V02A-G eliminates write latency and extends lifetime by 100,000×; versus MB85RC256V, it adds 2.0 V operation and Cypress-specific Device ID protocol - critical for mixed-vendor BOMs requiring runtime identification.

Availability

FM24V02A-G is available at Aetrix Electronics and suitable for industrial data loggers, smart meter firmware storage, and PLC I/O module configuration requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant sourcing.

Supply support for FM24V02A-G 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

Cypress Semiconductor (now part of Infineon Technologies) designs high-reliability nonvolatile memory and programmable system-on-chip solutions for industrial, automotive, and IoT applications.

The FM24V02A-G belongs to Cypress's F-RAM product line, engineered specifically to replace serial EEPROM in applications demanding rapid, frequent, and deterministic nonvolatile writes without firmware complexity.

FAQ

Is FM24V02A-G pin-compatible with standard 8-pin SOIC EEPROMs like AT24C256?

Yes - FM24V02A-G uses identical 8-pin SOIC packaging and I²C pin assignments (A0–A2, SDA, SCL, WP, VSS, VDD). No PCB redesign is needed; only firmware timing adjustments may be required if leveraging high-speed mode (3.4 MHz) or disabling EEPROM-style polling.

Does FM24V02A-G require external high-voltage circuitry for write operations?

No - unlike EEPROM, FM24V02A-G uses ferroelectric storage cells that switch polarization states at standard VDD (2.0–3.6 V). It contains no charge pump or high-voltage generator, eliminating associated power spikes, layout constraints, and reliability risks.

How does the Device ID function work, and what values does it return?

The Device ID is a read-only register accessed via I²C command 0x06. It returns Manufacturer ID = 0x01 (Cypress) and Product ID = 0x02 (FM24V02A series), enabling automated BOM verification and runtime device identification in multi-F-RAM systems.

Can FM24V02A-G operate reliably during brief power interruptions common in industrial environments?

Yes - because writes complete within the I²C clock cycle (no internal write cycle), data written before a brownout is guaranteed stored. Unlike EEPROM, there is no "partial write" failure mode; the F-RAM cell state transitions fully or not at all, ensuring atomicity even under unstable VDD.