FM25040B-GA Datasheet, PDF (1/14 Pages) Cypress Semiconductor – Automotive Temp. 4Kb Serial 5V F-RAM Memory

AEC Q100 Grade 1 Compliant
FM25040B – Automotive Temp.
4Kb Serial 5V F-RAM Memory
Features
4K bit Ferroelectric Nonvolatile RAM
 Organized as 512 x 8 bits
 High Endurance 10 Trillion (10¹³) Read/Writes
 NoDelay™ Writes
 Advanced High-Reliability Ferroelectric Process
Fast Serial Peripheral Interface - SPI
 Up to 14 MHz maximum Bus 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
 10 A Standby Current (+85C)
Industry Standard Configuration
 Automotive Temperature -40C to +125C
o Qualified to AEC Q100 Specification
 “Green”/RoHS 8-pin SOIC
Description
The FM25040B is a 4-kilobit nonvolatile memory
employing an advanced ferroelectric process. A
ferroelectric random access memory or FRAM is
nonvolatile but operates in other respects as 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 FM25040B performs write operations at bus
speed. No write delays are incurred. Data is written to
the memory array immediately after each byte has
been transferred to the device. The next bus cycle
may commence without the need for data polling.
The FM25040B is capable of supporting 10¹³
read/write cycles, or 10 million times more write
cycles than EEPROM.
These capabilities make the FM25040B 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 FM25040B provides substantial benefits to users
of serial EEPROM, in a hardware drop-in
replacement. The FM25040B uses the high-speed SPI
bus which enhances the high-speed write capability
of FRAM technology. Device specifications are
guaranteed over the 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 Names
/CS
/WP
/HOLD
SCK
SI
SO
VDD
VSS
Function
Chip Select
Write Protect
Hold
Serial Clock
Serial Data Input
Serial Data Output
Supply Voltage 5V
Ground
Ordering Information
FM25040B-GA
“Green”/RoHS 8-pin SOIC,
Automotive Grade 1
FM25040B-GATR “Green” /RoHS 8-pin SOIC,
Automotive Grade 1,
Tape & Reel
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.
Cypress Semiconductor Corporation • 198 Champion Court • San Jose, CA 95134-1709 • 408-943-2600
Document Number: 001-86151 Rev. **
Revised February 25, 2013