FM25CL64_07 Datasheet, PDF (1/13 Pages) Ramtron International Corporation – 64Kb FRAM Serial 3V Memory

AEC Q100 Grade 1 Compliant
FM25CL64 – Automotive Temp.
64Kb FRAM Serial 3V Memory
Features
64K bit Ferroelectric Nonvolatile RAM
• Organized as 8,192 x 8 bits
• Unlimited Read/Write Cycles
• NoDelay™ Writes
• Advanced High-Reliability Ferroelectric Process
Very Fast Serial Peripheral Interface - SPI
• Up to 16 MHz Frequency
• Direct Hardware Replacement for EEPROM
• SPI Mode 0 & 3 (CPOL, CPHA=0,0 & 1,1)
Sophisticated Write Protection Scheme
• Hardware Protection
• Software Protection
Low Power Consumption
• Low Voltage Operation 3.0-3.6V
• 15 µA Standby Current
Industry Standard Configuration
• Automotive Temperature -40°C to +125°C
• “Green”/RoHS 8-pin SOIC
Description
The FM25CL64 is a 64-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 years
while eliminating the complexities, overhead, and
system level reliability problems caused by
EEPROM and other nonvolatile memories.
Unlike serial EEPROMs, the FM25CL64 performs
write operations at bus speed. No write delays are
incurred. The next bus cycle may commence
immediately without the need for data polling. The
next bus cycle may start immediately. In addition, the
product offers virtually unlimited write endurance,
orders of magnitude more endurance than EEPROM.
Also, FRAM 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 FM25CL64 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 automotive controls where the long write
time of EEPROM can cause data loss.
The FM25CL64 provides substantial benefits to users
of serial EEPROM as a hardware drop-in
replacement. The FM25CL64 uses the high-speed
SPI bus, which enhances the high-speed write
capability of FRAM technology. Device
specifications are guaranteed over an automotive
temperature range of -40°C to +125°C.
Pin Configuration
CS
1
SO
2
WP
3
VSS
4
8
VDD
7
HOLD
6
SCK
5
SI
Pin Name
/CS
/WP
/HOLD
SCK
SI
SO
VDD
VSS
Function
Chip Select
Write Protect
Hold
Serial Clock
Serial Data Input
Serial Data Output
Supply Voltage
Ground
Ordering Information
FM25CL64-GA “Green” 8-pin SOIC
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. 3.0
May 2007
Ramtron International Corporation
1850 Ramtron Drive, Colorado Springs, CO 80921
(800) 545-FRAM, [phone]
http://www.ramtron.com
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