FM25CL04_05 Datasheet, PDF (1/12 Pages) Ramtron International Corporation – 4Kb FRAM Serial 3V Memory

FM25CL04
4Kb FRAM Serial 3V Memory
Features
4K bit Ferroelectric Nonvolatile RAM
• Organized as 512 x 8 bits
• Unlimited Read/Write Cycles
• 10 Year Data Retention
• NoDelay™ Writes
• Advanced High-Reliability Ferroelectric Process
Write Protection Scheme
• Hardware Protection
• Software Protection
Low Power Consumption
• Low Voltage Operation 2.7-3.65V
• 1 µA Standby Current
Very Fast Serial Peripheral Interface - SPI
• Up to 20 MHz Frequency
D • Direct Hardware Replacement for EEPROM
• SPI Mode 0 & 3 (CPOL, CPHA=0,0 & 1,1)
E _Description
D _{The FM25CL04 is a 4-kilobit nonvolatile memory}
N ^{S employing an advanced ferroelectric process. A}
ferroelectric random access memory or FRAM is
E ^{N nonvolatile and performs reads and writes like a}
RAM. It provides reliable data retention for 10 years
M IG ^{while eliminating the complexities, overhead, and}
system level reliability problems caused by
M ^{S 4 EEPROM and other nonvolatile memories.}
O ^{E L0 Unlike serial EEPROMs, the FM25CL04 performs}
5 _{write operations at bus speed. No write delays are}
C ^{D 2 incurred. The next bus cycle may commence}
immediately without the need for data polling. The
M _{next bus cycle may start immediately. In addition, the}
E ^F _{product offers virtually unlimited write endurance.}
W _{y Also, FRAM exhibits much lower power}
R ^b _{consumption than EEPROM.}
T _NE ^{ed These capabilities make the FM25CL04 ideal for}
c nonvolatile memory applications requiring frequent
O ^{la or rapid writes or low power operation. Examples}
range from data collection, where the number of
R p _{write cycles may be critical, to demanding industrial}
N ^e _{controls where the long write time of EEPROM can}
FO ^{R cause data loss.}
Industry Standard Configuration
• Industrial Temperature -40°C to +85°C
• 8-pin SOIC
• “Green” 8-pin SOIC
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
The FM25CL04 provides substantial benefits to users
Ordering Information
of serial EEPROM as a hardware drop-in
FM25CL04-S 8-pin SOIC
replacement. The FM25CL04 uses the high-speed
FM25CL04-G “Green” 8-pin SOIC
SPI bus, which enhances the high-speed write
capability of FRAM technology. Device
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. 3.1
May 2005
Ramtron International Corporation
1850 Ramtron Drive, Colorado Springs, CO 80921
(800) 545-FRAM, [phone]
www.ramtron.com
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