FM24CL04
4Kb FRAM Serial Memory
Features
4K bit Ferroelectric Nonvolatile RAM
• Organized as 512 x 8 bits
• Unlimited Read/Writes
• 45 Year Data Retention
• NoDelay™ Writes
• Advanced High-Reliability Ferroelectric Process
Low Power Operation
• 2.7V to 3.65V operation
• 75 µA Active Current (100 kHz) @ 3V
• 1 µA Standby Current
Industry Standard Configuration
• Industrial Temperature -40° C to +85° C
• 8-pin “Green”/RoHS SOIC (-G)
D
E
D S
N N
E G
M SI 4B
M E L0
O D 4C
C
2
E W FM
R E ve:
T N ati
O R ern
N O Alt
F
Fast Two-wire Serial Interface
• Up to 1 MHz maximum bus frequency
• Direct hardware replacement for EEPROM
Description
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.
Pin Configuration
NC
A1
A2
1
8
2
7
3
6
VSS
4
5
VDD
WP
SCL
SDA
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.
This product conforms to specifications per the terms of the Ramtron
standard warranty. The product has completed Ramtron’s internal
qualification testing and has reached production status.
Rev. 3.2
Feb. 2011
Pin Names
A1-A2
SDA
SCL
WP
VSS
VDD
Function
Device Select Address 1 and 2
Serial Data/Address
Serial Clock
Write Protect
Ground
Supply Voltage 3V
Ordering Information
FM24CL04-G
FM24CL04-GTR
“Green”/RoHS 8-pin SOIC
“Green”/RoHS 8-pin SOIC,
Tape & Reel
FM24CL04-S *
8-pin SOIC
FM24CL04-STR * 8-pin SOIC, Tape & Reel
* End of life. Last time buy June 2009.
Ramtron International Corporation
1850 Ramtron Drive, Colorado Springs, CO 80921
(800) 545-FRAM, (719) 481-7000
www.ramtron.com
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