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Infineon Technologies FM24CL64B-G
- Part No.:
- FM24CL64B-G
- Manufacturer:
- Infineon Technologies
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
FM24CL64B-G.pdf
- Description:
- IC FRAM 64KBIT I2C 1MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,421
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Product details
Overview
FM24CL64B-G from Cypress Semiconductor is a 64-Kbit (8K × 8) serial I²C F-RAM nonvolatile memory with NoDelay™ writes, 10¹⁴ read/write endurance, and 151-year data retention at industrial temperature (–40 °C to +85 °C). It operates from 2.7 V to 3.65 V and supports up to 1-MHz I²C bus speed - enabling real-time logging in battery-powered sensor nodes without write latency or polling.
For engineers reviewing the FM24CL64B-G datasheet, FM24CL64B-G pinout, FM24CL64B-G application, or FM24CL64B-G equivalent, key selection criteria include guaranteed write-at-bus-speed behavior, absence of internal write cycles, compatibility with legacy EEPROM timing (100/400 kHz), and dual-package availability (SOIC-8 and DFN-8) for space-constrained industrial control modules.
Technical Context
The FM24CL64B-G implements a ferroelectric memory array logically organized as 8,192 × 8 bits, accessed via standard I²C protocol with 7-bit slave address (1010b + A2:A0 + R/W). Its internal address latch auto-increments after each byte transfer, supporting unlimited sequential reads/writes without re-addressing.
All write operations complete within the I²C clock cycle - no internal write cycle, no tWR delay, and no need for ACK polling. The device uses Schmitt-triggered SDA/SCL inputs, open-drain SDA with slope control, and internally pulled-down A2–A0 and WP pins for deterministic boot-time configuration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 64 Kbit (8K × 8) - provides 8,192 bytes of byte-addressable nonvolatile storage |
| Interface | I²C (2-wire serial) - direct hardware replacement for EEPROM with same pinout and command set |
| Max clock frequency | 1 MHz - enables 10× faster write throughput vs. 100-kHz EEPROM in burst logging |
| Write endurance | 10¹⁴ cycles - supports >27,000 writes/sec continuously for 15 years without wear-out |
| Data retention | 151 years at +85 °C - eliminates periodic refresh or backup power requirements |
| Supply voltage | 2.7 V to 3.65 V - compatible with 3.3-V microcontroller I/O domains without level shifters |
| Operating temperature | –40 °C to +85 °C - qualified for uncontrolled industrial environments including motor drives and PLCs |
Pinout & Package
FM24CL64B-G is available in two RoHS-compliant packages: 8-pin SOIC (3.9 mm × 4.9 mm) and 8-pin DFN (2 mm × 3 mm) with exposed pad (non-connected). Both share identical pin functions and electrical behavior.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A2 | Device select address inputs | Set lower 3 bits of 7-bit slave address (1010xxx); internally pulled down - default address 0x50 when all grounded |
| SDA | Serial data/address bidirectional line | Open-drain I²C bus line with Schmitt trigger input and controlled-slope output; requires external pull-up |
| SCL | Serial clock input | Master-generated clock; rising edge samples data, falling edge outputs data; Schmitt-triggered for noise immunity |
| WP | Hardware write protect | Active-high; ties entire memory map to read-only when pulled to VDD; internally pulled down |
| VSS | Ground reference | System ground connection; must be low-impedance path for stable I²C signaling and F-RAM switching |
| VDD | Power supply | 2.7–3.65 V supply; powers logic and ferroelectric array; no internal charge pump required for writes |
Key Features
| Feature | Design Value |
|---|---|
| NoDelay™ write architecture | Writes complete within I²C clock cycle - eliminates software polling and system-level timeout handling |
| Ferroelectric memory process | Enables 100 trillion write cycles without degradation - removes EEPROM wear-leveling firmware overhead |
| Low-power write operation | 100 µA active current at 100 kHz - avoids voltage boosting circuitry and reduces peak current draw vs. EEPROM |
| I²C timing compatibility | Supports 100 kHz, 400 kHz, and 1 MHz modes - allows drop-in upgrade in existing EEPROM-based designs |
| Industrial-grade reliability | Guaranteed operation across –40 °C to +85 °C with no derating - suitable for embedded controllers in harsh environments |
Applications
| Smart Meter Data Logging | PLC Configuration Storage |
|---|---|
Use Scenario: Continuous timestamped energy consumption sampling every 100 ms under mains power interruption. IC Role / Device Role / Timing Role: Nonvolatile scratchpad storing last valid reading and calibration offsets during brownout events. Use Value: Eliminates data loss from EEPROM write delays during grid instability - ensures regulatory-compliant metering continuity. | Use Scenario: Storing I/O mapping, PID tuning parameters, and firmware update flags in modular industrial controllers. IC Role / Device Role / Timing Role: Configuration register bank updated on demand by host MCU without blocking real-time task execution. Use Value: Enables sub-millisecond parameter updates during runtime - avoids 5–20 ms EEPROM write stalls that disrupt motion control loops. |
| Medical Sensor Calibration | Automotive Telematics Event Buffer |
Use Scenario: Recording factory-calibrated sensor gain/offset values and field-trimmed corrections during device commissioning. IC Role / Device Role / Timing Role: Secure, tamper-resistant storage of multi-point calibration coefficients with write-protection enabled post-configuration. Use Value: Prevents accidental overwrites while allowing one-time field adjustments - meets ISO 13485 traceability requirements. | Use Scenario: Capturing GPS position, accelerometer triggers, and CAN bus fault codes during vehicle crash or rollover events. IC Role / Device Role / Timing Role: High-speed circular buffer capturing pre-event data before power loss or airbag deployment signal. Use Value: Guarantees capture of 2+ seconds of pre-crash telemetry - no data loss due to write latency during critical safety event. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial nonvolatile memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT24C64D-SSHM-T (Microchip) | 64-Kbit I²C EEPROM with 1-MHz support; 1M write cycles; 10 ms typical write time | Lacks NoDelay™ writes - requires polling or fixed delays; unsuitable for high-frequency logging | Select only if cost sensitivity outweighs write performance and endurance requirements |
| MB85RC64T (Fujitsu) | 64-Kbit I²C FRAM with identical 10¹⁴ endurance and 151-yr retention; same 2.7–3.65 V range | Pin-compatible but uses different slave address (0x50–0x57 configurable via A0–A2); identical SOIC-8 footprint | Valid functional alternative with same timing and reliability - verify address mapping in firmware |
Compared with AT24C64D-SSHM-T, FM24CL64B-G eliminates write latency and extends lifetime by 100 million times; versus MB85RC64T, it offers identical core specs but differs in manufacturer-specific qualification testing and long-term supply chain commitments.
Availability
FM24CL64B-G is available at Aetrix Electronics and suitable for smart meter data logging, PLC configuration storage, medical sensor calibration, and automotive telematics event buffering requiring stable component supply across extended product lifecycles.
Supply support for FM24CL64B-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 semiconductor solutions for industrial, automotive, and IoT applications, with emphasis on low-power, robust interface technologies.
The FM24CL64B-G belongs to Cypress's serial F-RAM product line, engineered specifically to replace EEPROM in systems where frequent, deterministic, low-power nonvolatile writes are mission-critical.
FAQ
Is FM24CL64B-G pin-compatible with standard I²C EEPROMs like AT24C64?
Yes - FM24CL64B-G uses identical 8-pin SOIC and DFN footprints and matches the standard I²C EEPROM pinout (A0–A2, SDA, SCL, WP, VDD, VSS). Its slave address (0x50–0x57) aligns with the AT24C64 family, enabling direct PCB-level replacement without layout changes.
Does FM24CL64B-G require special I²C timing or firmware modifications?
No - it supports standard I²C START/STOP, ACK/NACK, and addressing protocols. Firmware written for EEPROM works unchanged, though polling loops can be removed since writes complete synchronously with the I²C clock cycle.
How does the WP pin function, and what happens when it's left floating?
The WP pin is internally pulled down; leaving it unconnected defaults to write-enable mode. Tying WP to VDD activates full-memory hardware write protection. This behavior is deterministic and requires no external pull-down resistor.
Can FM24CL64B-G operate reliably at 2.7 V while sustaining 1-MHz I²C communication?
Yes - datasheet AC switching characteristics are fully specified down to 2.7 V, including tLOW, tHIGH, and setup/hold times. At 2.7 V, maximum supported I²C frequency remains 1 MHz, with no derating required for timing compliance.
FM24CL64B-G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- F-RAM™
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- FRAM
- Technology:
- FRAM (Ferroelectric RAM)
- Memory Size:
- 64Kbit
- Memory Organization:
- 8K x 8
- Memory Interface:
- I2C
- Clock Frequency:
- 1 MHz
- Write Cycle Time - Word, Page:
- -
- Access Time:
- 550 ns
- Voltage - Supply:
- 2.7V ~ 3.65V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
FM24CL64B-G FAQ
1.How can I place an order for FM24CL64B-G through Aetrix?
Please submit a Request for Quotation (RFQ) for FM24CL64B-G on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for FM24CL64B-G reliable?
The price and inventory of FM24CL64B-G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for FM24CL64B-G is usually 5 days.
3.What payment methods are accepted for FM24CL64B-G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for FM24CL64B-G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for FM24CL64B-G?
FM24CL64B-G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your FM24CL64B-G order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for FM24CL64B-G?
For technical support, including FM24CL64B-G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your FM24CL64B-G requirements.
6.How does Aetrix verify that FM24CL64B-G is sourced from the original manufacturer or authorized distributors?
All FM24CL64B-G products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that FM24CL64B-G meets industry standards.
7.What is the process for return or replacement of FM24CL64B-G?
All FM24CL64B-G units undergo pre-shipment inspection (PSI). If there is an issue with FM24CL64B-G, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The FM24CL64B-G part is unused and in its original packaging.
Return procedure for FM24CL64B-G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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