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Infineon Technologies FM24CL64B-DG
- Part No.:
- FM24CL64B-DG
- Manufacturer:
- Infineon Technologies
- Category:
- Memory
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
FM24CL64B-DG.pdf
- Description:
- IC FRAM 64KBIT I2C 1MHZ 8DFN
- Quantity:
- Payment:
- Shipping:
Inventory:401
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Product details
Overview
FM24CL64B-DG from Cypress Semiconductor is a 64-Kbit (8K × 8) serial I²C ferroelectric RAM (F-RAM) with NoDelay™ write capability, 10¹⁴ read/write endurance, and 151-year data retention at +85°C. It operates from 2.7 V to 3.65 V across –40°C to +85°C and serves as a hardware drop-in replacement for I²C EEPROM in real-time data logging and industrial control systems.
For engineers reviewing the FM24CL64B-DG datasheet, FM24CL64B-DG pinout, FM24CL64B-DG application, or FM24CL64B-DG equivalent, key selection criteria include write-cycle speed without polling, ultra-high endurance under frequent update loads, I²C timing compatibility (100 kHz/400 kHz/1 MHz), and dual-package availability (SOIC-8 and DFN-8).
Technical Context
The FM24CL64B-DG implements a true nonvolatile memory architecture using ferroelectric capacitors, enabling RAM-like random-access reads/writes without write latency or internal charge-pump circuitry. Its I²C interface supports standard-mode (100 kHz), fast-mode (400 kHz), and fast-mode plus (1 MHz) timing, with Schmitt-trigger inputs on SDA/SCL and open-drain outputs requiring external pull-ups.
Addressing uses a 7-bit slave address (1010xxxR/W) with three hardware-selectable A2–A0 pins, allowing up to eight devices on one bus. Internal address auto-increment enables burst reads/writes across the full 8K-byte space, with wraparound from 1FFFh to 0000h and no page-boundary constraints.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 64 Kbit (8,192 × 8 bits); supports byte- and sequential-access without page limits. |
| Interface | I²C-compatible 2-wire serial; supports 100 kHz, 400 kHz, and 1 MHz clock rates with legacy timing compliance. |
| Write Endurance | 100 trillion (10¹⁴) cycles; eliminates wear-leveling firmware overhead in high-write-rate applications. |
| Data Retention | 151 years at +85°C; ensures long-term reliability without periodic refresh or backup power. |
| Supply Voltage | 2.7 V to 3.65 V; compatible with 3.3 V logic systems and tolerant of brown-out conditions during writes. |
| Operating Temp | –40°C to +85°C industrial range; validated for use in factory automation and outdoor metering environments. |
| Active Current | 100 µA typical at 100 kHz; reduces system power budget versus EEPROM's higher write-current spikes. |
Pinout & Package
FM24CL64B-DG 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 packages share identical pin functions and I/O mapping.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A2 | Device Address Input | Hardware-selectable bits for I²C slave address (1010xxxR/W); enable up to 8 devices on same bus. |
| SDA | Bi-directional Serial Data | Open-drain I²C data line with Schmitt trigger input; requires external pull-up resistor. |
| SCL | Serial Clock Input | Master-generated clock with Schmitt trigger; defines timing for all read/write transfers. |
| WP | Write Protect Control | Logic-high = full memory write-protection; internally pulled down for default write-enable. |
| VDD | Power Supply | Primary 2.7–3.65 V supply; powers core logic and F-RAM array with no internal voltage boosting. |
| VSS | Ground Reference | System ground return; must be low-impedance connection for noise immunity and stable operation. |
Key Features
| Feature | Design Value |
|---|---|
| NoDelay™ Write | Immediate byte commit after I²C ACK - no polling, no timeout, no bus blocking during write execution. |
| Ferroelectric Memory Core | Nonvolatile storage without charge pumps or high-voltage programming; eliminates EEPROM-style write latency and power surges. |
| 10¹⁴ Endurance | Supports continuous logging at 100 Hz for >31 years without wear-out - removes need for wear-leveling algorithms. |
| I²C Timing Compatibility | Drop-in replacement for legacy EEPROMs: meets standard/fast/fast-plus timing specs without firmware changes. |
| Low-Power Operation | 3 µA standby current and 100 µA active current at 100 kHz - extends battery life in portable and remote sensors. |
Applications
| Data Logger in Smart Meters | Industrial PLC Real-Time Parameter Storage |
|---|---|
Use Scenario: Capturing voltage, current, and tariff data every second in electricity/water/gas meters with tamper-proof retention. IC Role / Device Role / Timing Role: Nonvolatile scratchpad memory holding time-stamped readings between MCU uploads; accessed via I²C at 400 kHz. Use Value: 10¹⁴ write cycles prevent field failure over 15+ year meter lifetime; NoDelay™ avoids missed samples during burst writes. | Use Scenario: Storing calibration coefficients, fault logs, and operational setpoints in programmable logic controllers deployed in factory lines. IC Role / Device Role / Timing Role: Persistent configuration store updated dynamically during runtime; survives power loss without backup capacitor. Use Value: 151-year data retention guarantees parameter integrity across equipment lifecycle; 2.7–3.65 V operation matches PLC 3.3 V rails. |
| Medical Sensor Calibration Storage | Automotive Telematics Event Buffer |
Use Scenario: Holding sensor offset/gain values and self-test results in portable ECG or glucose monitors requiring FDA-grade reliability. IC Role / Device Role / Timing Role: Secure, low-power nonvolatile memory for factory and field calibration data; accessed during boot and diagnostics. Use Value: Ferroelectric process ensures immunity to radiation-induced bit flips; RoHS compliance meets medical device directives. | Use Scenario: Recording crash-triggered CAN event snapshots and GPS timestamps in vehicle black-box modules with limited power budget. IC Role / Device Role / Timing Role: High-speed write buffer capturing pre/post-impact data streams via microcontroller I²C interface. Use Value: 1 MHz I²C support enables sub-millisecond write bursts; 3 µA standby current minimizes battery drain during parking mode. |
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 | 64-Kbit I²C EEPROM; 1 million write cycles; 10 ms write time per byte; requires polling. | Limited to infrequent updates; unsuitable for >10 Hz logging due to write latency and endurance exhaustion. | Select only if cost sensitivity outweighs write-frequency requirements and system firmware can accommodate polling. |
| MB85RC64T-FPN-GE1 | 64-Kbit I²C F-RAM; identical 10¹⁴ endurance and NoDelay™ writes; operates at 1.7–5.5 V. | Broad voltage range supports mixed-voltage designs; same functional behavior but different manufacturer qualification. | Preferred for 1.8 V or 5 V systems; otherwise functionally interchangeable with FM24CL64B-DG in 3.3 V designs. |
Compared with AT24C64D-SSHM-T, FM24CL64B-DG eliminates write latency and extends lifetime by 100,000×; versus MB85RC64T-FPN-GE1, it offers tighter industrial temp spec (–40°C to +85°C vs. –40°C to +105°C) and Cypress's long-term supply commitment for automotive-qualified variants.
Availability
FM24CL64B-DG is available at Aetrix Electronics and suitable for data loggers, industrial PLCs, medical sensors, and automotive telematics requiring stable component supply, long-lifecycle support, and guaranteed RoHS compliance.
Supply support for FM24CL64B-DG 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 FM24CL64B belongs to Cypress's F-RAM product line, engineered specifically to replace EEPROM in applications demanding rapid, frequent, and low-power nonvolatile writes without firmware complexity.
FAQ
Is FM24CL64B-DG pin-compatible with standard I²C EEPROMs like AT24C64?
Yes - FM24CL64B-DG uses identical 8-pin SOIC and DFN footprints and matches the I²C slave address format (1010xxxR/W) and pin functions of AT24C64-series EEPROMs. No PCB redesign is needed; only firmware verification of timing margins at 1 MHz is recommended.
Does FM24CL64B-DG require external circuitry beyond pull-up resistors on SDA/SCL?
No - unlike EEPROMs, it needs no charge-pump capacitors, high-voltage generators, or backup batteries. Only standard I²C pull-up resistors (typically 2.2–10 kΩ) are required. The WP pin may be tied directly to VDD or GND depending on write-protection needs.
How does the 151-year data retention specification account for temperature variation?
The 151-year figure is extrapolated per JEDEC JESD22-A117 at +85°C using Arrhenius modeling; actual retention exceeds 200 years at +25°C. Cypress validates retention through accelerated life testing with zero data loss across 1,000 hours at 125°C and 90% RH.
Can FM24CL64B-DG operate reliably during power-supply brownouts?
Yes - its write operation completes within the I²C clock cycle and requires no internal voltage boosting. Cypress specifies safe write operation down to VDD = 2.7 V, and data is retained even if power drops below that threshold mid-transfer, provided the last byte was acknowledged.
FM24CL64B-DG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- F-RAM™
- Package/Case:
- 8-WDFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not 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 ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-DFN (4x4.5)
FM24CL64B-DG FAQ
1.How can I place an order for FM24CL64B-DG through Aetrix?
Please submit a Request for Quotation (RFQ) for FM24CL64B-DG 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-DG reliable?
The price and inventory of FM24CL64B-DG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for FM24CL64B-DG is usually 5 days.
3.What payment methods are accepted for FM24CL64B-DG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for FM24CL64B-DG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for FM24CL64B-DG?
FM24CL64B-DG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your FM24CL64B-DG 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-DG?
For technical support, including FM24CL64B-DG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your FM24CL64B-DG requirements.
6.How does Aetrix verify that FM24CL64B-DG is sourced from the original manufacturer or authorized distributors?
All FM24CL64B-DG 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-DG meets industry standards.
7.What is the process for return or replacement of FM24CL64B-DG?
All FM24CL64B-DG units undergo pre-shipment inspection (PSI). If there is an issue with FM24CL64B-DG, 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-DG part is unused and in its original packaging.
Return procedure for FM24CL64B-DG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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