Preliminary
AEC Q100 Grade 1 Compliant
FM24CL64B
- Automotive Temp.
64Kb Serial 3V F-RAM Memory
Features
64K bit Ferroelectric Nonvolatile RAM
Organized as 8192 x 8 bits
High Endurance 10 Trillion (10
13
) Read/Writes
NoDelay™ Writes
Advanced High-Reliability Ferroelectric Process
Fast Two-wire Serial Interface
Up to 1 MHz maximum bus frequency
Direct hardware replacement for EEPROM
Supports legacy timing for 100 kHz & 400 kHz
Low Power Consumption
Low Voltage Operation 3.0-3.6V
6
A
Standby Current (+85C)
Industry Standard Configuration
Automotive Temperature -40C to +125C
o
Qualified to AEC Q100 Specification
8-pin “Green”/RoHS SOIC Package
Description
The FM24CL64B is a 64Kbit nonvolatile memory
employing an advanced ferroelectric process. A
ferroelectric random access memory or F-RAM is
nonvolatile and performs reads and writes like a
RAM. It provides reliable data retention for years
while eliminating the complexities, overhead, and
system level reliability problems caused by
EEPROM and other nonvolatile memories.
The FM24CL64B performs write operations at bus
speed. No write delays are incurred. The next bus
cycle may commence immediately without the need
for data polling. In addition, the product offers write
endurance orders of magnitude higher than
EEPROM. 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.
These capabilities make the FM24CL64B 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 FM24CL64B provides substantial benefits to
users of serial EEPROM, yet these benefits are
available in a hardware drop-in replacement. The
device is available in industry standard 8-pin SOIC
package using a familiar two-wire (I
2
C) protocol. The
device is guaranteed over the automotive temperature
range of -40°C to +125°C.
Pin Configuration
A0
A1
A2
VSS
1
2
3
4
8
7
6
5
VDD
WP
SCL
SDA
Pin Name
A0-A2
SDA
SCL
WP
VDD
VSS
Function
Device Select Address
Serial Data/address
Serial Clock
Write Protect
Supply Voltage
Ground
Ordering Information
FM24CL64B-G
A
FM24CL64B-GATR
“Green”/RoHS 8-pin SOIC,
Automotive Grade 1
“Green”/RoHS 8-pin SOIC,
Automotive Grade 1,
Tape & Reel
This is a product that has fixed target specifications but are subject
to change pending characterization results.
Rev. 1.1
June 2011
Ramtron International Corporation
1850 Ramtron Drive, Colorado Springs, CO 80921
(800) 545-FRAM, (719) 481-7000
Page 1 of 12
RAMTRON [ RAMTRON INTERNATIONAL CORPORATION ]
