Infineon Technologies FM24C16B-G

Overview

FM24C16B-G from Cypress Semiconductor is a 16-Kbit (2K × 8) serial I²C ferroelectric RAM (F-RAM) nonvolatile memory with NoDelay™ write capability, 10¹⁴ read/write endurance, and 151-year data retention at industrial temperature (–40 °C to +85 °C). It operates from 4.5 V to 5.5 V and delivers immediate byte-write completion at bus speed-no polling required-making it ideal for high-frequency data logging in industrial controllers and metering systems.

For engineers reviewing the FM24C16B-G datasheet, FM24C16B-G pinout, FM24C16B-G application, or FM24C16B-G equivalent, key selection criteria include guaranteed I²C compatibility up to 1 MHz, hardware drop-in replacement capability for legacy 2K×8 EEPROMs, absence of write-cycle delays, ultra-low active current (100 µA @ 100 kHz), and RoHS-compliant 8-pin SOIC packaging.

Technical Context

The FM24C16B-G implements a true nonvolatile RAM architecture using ferroelectric capacitors, enabling byte-level writes at I²C bus speed without internal charge-pump circuitry. Its 11-bit addressing scheme combines a 3-bit page select (bits 10:8) and 8-bit word address (bits 7:0), supporting random and sequential access across the full 2048-byte memory map.

As an I²C slave device, it responds to standard 7-bit slave address 0xA0 (write) / 0xA1 (read), supports START/STOP conditions, ACK/NAK handshaking, and maintains compatibility with legacy 100 kHz and 400 kHz timings while fully supporting 1 MHz operation. Write protection is controlled via dedicated WP pin with internal pull-down.

Key Specifications

Pinout & Package

FM24C16B-G is housed in an 8-pin Small Outline Integrated Circuit (SOIC) package with standard 1.27 mm pitch and gull-wing leads. Pinout is fully compatible with industry-standard 2K×8 I²C EEPROMs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AT24C16D-SSHM-T and MB85RC16, FM24C16B-G uniquely delivers 5V-native operation, pin-for-pin compatibility with legacy EEPROM footprints, and 100,000× higher endurance-making it the only choice for 5V industrial systems demanding both reliability and real-time write performance.

Availability

FM24C16B-G is available at Aetrix Electronics and suitable for smart metering, industrial PLCs, medical calibration storage, and automotive body control modules requiring stable component supply and long-term lifecycle assurance.

Supply support for FM24C16B-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) is a fabless semiconductor company specializing in embedded systems, memory, and connectivity solutions for industrial, automotive, and IoT markets.

The FM24C16B-G belongs to Cypress's F-RAM product line, engineered specifically to replace EEPROM in applications where write latency, endurance, and power efficiency constrain system performance.

FAQ

Is FM24C16B-G pin-compatible with standard 2K×8 I²C EEPROMs like AT24C16?

Yes. FM24C16B-G uses an identical 8-pin SOIC package with matching pin assignments for VDD, VSS, SDA, SCL, and WP. The NC pins align physically, and the I²C slave address (0xA0/0xA1) matches EEPROM conventions-enabling direct PCB-level replacement without layout changes.

Does FM24C16B-G require special I²C driver modifications?

No. It adheres strictly to standard I²C protocol timing, including START/STOP, ACK/NAK, and byte-transfer sequencing. Existing EEPROM drivers work unchanged-only write-latency handling (e.g., polling loops) can be removed to improve throughput.

What happens if WP pin is left floating?

The WP pin has an internal pull-down resistor. When left unconnected, it defaults to logic LOW, enabling full memory write access. For production systems, tie WP to VDD only when permanent write protection is required-otherwise, leave it floating or grounded per design intent.

Can FM24C16B-G operate reliably at 5.5V continuously?

Yes. Its absolute maximum VDD rating is 6.0V, and it is fully specified for DC operation across 4.5V–5.5V. At 5.5V, active current remains within 100 µA (typ) at 100 kHz, and all AC timing parameters-including 1 MHz capability-are guaranteed per datasheet Rev. *M.