FM25CL64S Ramtron, FM25CL64S Datasheet
FM25CL64S
Manufacturer Part Number
FM25CL64S
Description
SOP8
Manufacturer
Ramtron
Datasheet
1.FM25CL64S.pdf
(14 pages)
Specifications of FM25CL64S
Date_code
04+
FM25CL64
64Kb FRAM Serial 3V Memory
Features
64K bit Ferroelectric Nonvolatile RAM
Very Fast Serial Peripheral Interface - SPI
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 45 years
while eliminating the complexities, overhead, and
system
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 industrial controls where the long write
time of EEPROM can cause data loss.
The FM25CL64 provides substantial benefits to users
of
replacement. The FM25CL64 uses the high-speed
SPI bus, which enhances the high-speed write
capability
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
July 2005
Organized as 8,192 x 8 bits
Unlimited Read/Write Cycles
45 Year Data Retention
NoDelay™ Writes
Advanced High-Reliability Ferroelectric Process
Up to 20 MHz Frequency
Direct Hardware Replacement for EEPROM
SPI Mode 0 & 3 (CPOL, CPHA=0,0 & 1,1)
serial
level
EEPROM
of
reliability
FRAM
as
problems
a
technology.
hardware
caused
drop-in
Device
by
Sophisticated Write Protection Scheme
Low Power Consumption
Industry Standard Configuration
Pin Configuration
Pin Name
/CS
/WP
/HOLD
SCK
SI
SO
VDD
VSS
Ordering Information
FM25CL64-S
FM25CL64-G
FM25CL64-DG
Hardware Protection
Software Protection
Low Voltage Operation 2.7-3.65V
1 A Standby Current
Industrial Temperature -40 C to +85 C
8-pin SOIC and 8-pin TDFN Packages
“Green” Packaging Options
VSS
WP
SO
CS
1850 Ramtron Drive, Colorado Springs, CO 80921
VSS
/WP
/CS
SO
Function
Chip Select
Write Protect
Hold
Serial Clock
Serial Data Input
Serial Data Output
Supply Voltage
Ground
1
2
3
4
8-pin SOIC
“Green” 8-pin SOIC
“Green” 8-pin TDFN
1
2
3
4
Ramtron International Corporation
Top View
(800) 545-FRAM, (719) 481-7000
8
7
6
5
8
7
6
5
VDD
/HOLD
SCK
SI
www.ramtron.com
VDD
HOLD
SCK
SI
Page 1 of 14
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