Infineon/CYPRESS FM25CL64B-GTR

The FM25CL64B is a 64-Kbit nonvolatile memory employing an advanced ferroelectric process. A ferroelectric random access memory of 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 serial flash, EEPROM, and other nonvolatile memories. Unlike serial flash and EEPROM, the FM25CL64B 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. The FM25CL64B is capable of supporting 10^14 read/write cycles, or 100 million times more write cycles than EEPROM. These capabilities make the FM25CL64B ideal for nonvolatile memory applications requiring frequent or rapid writes. Examples range from data collection, where the number of write cycles may be critical, to demanding industrial controls where the long write time of serial flash or EEPROM can cause data loss. The FM25CL64B provides substantial benefits to users of serial EEPROM or flash as a hardware drop-in replacement. The FM25CL64B uses the high-speed SPI bus, which enhances the high-speed write capability of F-RAM technology. The device specifications are guaranteed over an industrial temperature range of -40℃ to +85℃.

• 64-Kbit ferroelectric random access memory (F-RAM) logically organized as 8K × 8
• High-endurance 100 trillion (10^14) read/writes
• 151-year data retention
• NoDelay writes
• Advanced high-reliability ferroelectric process
• Very fast serial peripheral interface (SPI)
• Up to 20 MHz frequency
• Direct hardware replacement for serial flash and EEPROM
• Supports SPI mode 0 (0, 0) and mode 3 (1, 1)
• Sophisticated write protection scheme
• Hardware protection using the Write Protect (WP) pin
• Software protection using Write Disable instruction
• Software block protection for 1/4, 1/2, or entire array
• Low power consumption
• 200 μA active current at 1 MHz
• 3 μA (typ) standby current
• Low-voltage operation: VDD = 2.7 V to 3.65 V
• Industrial temperature: -40°C to +85°C
• Packages
  • 8-pin small outline integrated circuit (SOIC) package
  • 8-pin thin dual flat no leads (DFN) package
• Restriction of hazardous substances (RoHS) compliant

• Non-volatile memory applications requiring frequent or high-speed writes
• Data acquisition
• Demanding industrial control
• Drop-in hardware replacement for serial EEPROM or serial Flash
• Direct interface with microcontrollers featuring hardware SPI ports
• MCUs without dedicated SPI bus can emulate SPI interface via GPIO