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FM25L04 Datasheet(PDF) 1 Page - List of Unclassifed Manufacturers

No. de pieza FM25L04
Descripción Electrónicos  4Kb FRAM Serial 3V Memory
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FM25L04 Datasheet(HTML) 1 Page - List of Unclassifed Manufacturers

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Pre-Production
This is a product in the pre-production phase of development. Device
Ramtron International Corporation
characterization is complete and Ramtron does not expect to change the
1850 Ramtron Drive, Colorado Springs, CO 80921
specifications. Ramtron will issue a Product Change Notice if any
(800) 545-FRAM, (719) 481-7000
specification changes are made.
www.ramtron.com
Rev. 2.0
May 2005
Page 1 of 12
FM25L04
4Kb FRAM Serial 3V Memory
Features
4K bit Ferroelectric Nonvolatile RAM
Organized as 512 x 8 bits
Unlimited Read/Write Cycles
45 Year Data Retention
NoDelay™ Writes
Advanced High-Reliability Ferroelectric Process
Very Fast Serial Peripheral Interface - SPI
Up to 14 MHz Frequency
Direct Hardware Replacement for EEPROM
SPI Mode 0 & 3 (CPOL, CPHA=0,0 & 1,1)
Write Protection Scheme
Hardware Protection
Software Protection
Low Power Consumption
Low Voltage Operation 2.7-3.6V
1
µA Standby Current
Industry Standard Configuration
Industrial Temperature -40
°C to +85°C
8-pin SOIC
“Green” 8-pin SOIC
Description
The FM25L04 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.
Unlike serial EEPROMs, the FM25L04 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.
Also,
FRAM
exhibits
much
lower
power
consumption than EEPROM.
These capabilities make the FM25L04 ideal for
nonvolatile memory applications requiring frequent
or rapid writes or low power operation. 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 FM25L04 provides substantial benefits to users
of serial
EEPROM
as
a
hardware
drop-in
replacement. The FM25L04 uses the high-speed 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.
Pin Configuration
Pin Name
Function
/CS
Chip Select
/WP
Write Protect
/HOLD
Hold
SCK
Serial Clock
SI
Serial Data Input
SO
Serial Data Output
VDD
Supply Voltage
VSS
Ground
Ordering Information
FM25L04-S
8-pin SOIC
FM25L04-G
“Green” 8-pin SOIC
CS
SO
WP
VSS
VDD
HOLD
SCK
SI
1
2
3
4
8
7
6
5


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