FM24CL04
4Kb FRAM Serial Memory Features
Low Power Operation 4K bit Ferroelectric Nonvolatile RAM • 2.7V to 3.65V operation • Organized as 512 x 8 bits • 75 µ A Active Current (100 kHz) @ 3V • UnlimitedRead/Writes • 1 µ A Standby Current • 45 Year Data Retention • NoDelay™ Writes Industry Standard Configuration • Advanced High-Reliability Ferroelectric Process • Industrial Temperature -40 ° C to +85 ° C • 8-pin SOIC (-S) Fast Two-wire Serial Interface • “Green” 8-pin SOIC (-G) • Up to 1 MHz maximum bus frequency • Direct hardware replacement for EEPROM
Description Pin Configuration
The FM24CL04 is a 4-kilobit nonvolatile memory employing an advanced ferroelectric process. A ferroelectric random access memory or FRAM is nonvolatile and performs reads and writes like a RAM. It provides reliable data retention for 45 years while eliminating the complexities, overhead, and system level reliability problems caused by EEPROM and other
nonvolatile memories. Unlike serial EEPROMs, the FM24CL04 performs write operations at bus speed. No write delays are incurred. Data is written to the memory array in the cycle after it has been successfully transferred to the device. The next bus cycle may commence immediately. These capabilities make the FM24CL04 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 EEPROM can cause data loss. The combination of features allows more frequent data writing with less overhead for the system. The FM24CL04 provides substantial benefits to users of serial EEPROM, yet these benefits are available in a hardware drop-in replacement. The FM24CL04 is available in an industry standard 8-pin package using a two-wire protocol. The specifications are guaranteed over an industrial temperature range of -40°C to +85°C.
NCA1
A2VSSVDDWP
SCL
SDA
12
3
487
6
5 Pin Names Function A1-A2 Device Select Address 1 and 2 SDA Serial Data/Address SCL Serial Clock WP Write Protect VSS Ground VDD Supply Voltage 3V
Ordering Information
FM24CL04-S 8-pin SOIC FM24CL04-G “Green” 8-pin SOIC
This product conforms to specifications per the terms of the Ramtron Ramtron International Corporation standard warranty. The product has completed Ramtron’s internal 1850 Ramtron Drive, Colorado Springs, CO 80921 qualification testing and has reached production status. (800) 545-FRAM, (719) 481-7000 www.ramtron.com Rev. 3.0 March 2005 Page 1 of 11
