FM24CL04B-G 4Kb 5V FRAM with Unlimited Endurance 150ns No-Delay Writes 1MHz I2C Interface 10^14 Read/Write Cycles Low 50μA Standby Current and 40-Year Data Retention

FM24CL04B-G 4Kb 5V FRAM with Unlimited Endurance 150ns No-Delay Writes 1MHz I2C Interface 10^14 Read/Write Cycles Low 50 μA Standby Current and 40-Year Data Retention

• 4-Kbit ferroelectric random access memory (F-RAM) logically organized as 512 × 8
  • High-endurance 100 trillion (10¹⁴) read/writes
  • 151-year data retention (See Data Retention and Endurance on page 10)
  • NoDelay™ writes
  • Advanced high-reliability ferroelectric process
• Fast 2-wire Serial interface (I2C)
  • Up to 1-MHz frequency
  • Direct hardware replacement for serial (I2C) EEPROM
  • Supports legacy timings for 100 kHz and 400 kHz
• Low power consumption
  • 100 μA active current at 100 kHz
  • 3 μA (typ) standby current
• Voltage operation: VDD = 2.7 V to 3.65 V
• Industrial temperature: -40℃ to +85℃
• 8-pin small outline integrated circuit (SOIC) package
• Restriction of hazardous substances (RoHS) compliant

The FM24CL04B is a 4-Kbit nonvolatile memory employing an advanced ferroelectric process. A ferroelectric random access memory or F-RAM is nonvolatile and performs reads and writes similar to a RAM. It provides reliable data retention for 151 years while eliminating the complexities, overhead, and system-level reliability problems caused by EEPROM and other nonvolatile memories.

Unlike EEPROM, the FM24CL04B performs write operations at bus speed. No write delays are incurred. Data is written to the memory array immediately after each byte is successfully transferred to the device. The next bus cycle can commence without the need for data polling. In addition, the product offers substantial write endurance compared with other nonvolatile memories. Also, F-RAM exhibits much lower power during writes than EEPROM since write operations do not require an internally elevated power supply voltage for write circuits. The FM24CL04B is capable of supporting 10¹⁴ read/write cycles, or 100 million times more write cycles than EEPROM.

These capabilities make the FM24CL04B ideal for nonvolatile memory applications, requiring frequent or rapid writes. Examples range from data logging, where the number of write cycles may be critical, to demanding industrial controls where the long write time of EEPROM can cause data loss. The combination of features allows more frequent data writing with less overhead for the system.

The FM24CL04B provides substantial benefits to users of serial (I2C) EEPROM as a hardware drop-in replacement. The device specifications are guaranteed over an industrial temperature range of -40°C to +85°C.

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