FM25V02
256Kb Serial 3V F-RAM Memory
Features
Device ID and Serial Number
256K bit Ferroelectric Nonvolatile RAM
Organized as 32,768 x 8 bits
Device ID reads out Manufacturer ID & Part ID
Unique Serial Number (FM25VN02)
High Endurance 100 Trillion (1014) Read/Writes
10 Year Data Retention
Low Voltage, Low Power
NoDelay™ Writes
Low Voltage Operation 2.0V – 3.6V
90 A Standby Current (typ.)
5 A Sleep Mode Current (typ.)
Advanced High-Reliability Ferroelectric Process
Very Fast Serial Peripheral Interface - SPI
Up to 40 MHz Frequency
Industry Standard Configurations
Industrial Temperature -40 C to +85 C
8-pin “Green”/RoHS SOIC Package
8-pin “Green”/RoHS TDFN Package
Direct Hardware Replacement for Serial Flash
SPI Mode 0 & 3 (CPOL, CPHA=0,0 & 1,1)
Write Protection Scheme
Hardware Protection
Software Protection
identify a board or system. Both devices incorporate
a read-only Device ID that allows the host to
determine the manufacturer, product density, and
product revision. The devices are guaranteed over an
industrial temperature range of -40°C to +85°C.
Description
The FM25V02 is a 256-kilobit nonvolatile memory
employing an advanced ferroelectric process. A
ferroelectric random access memory or F-RAM is
nonvolatile and performs reads and writes like a
RAM. It provides reliable data retention for 10 years
while eliminating the complexities, overhead, and
system level reliability problems caused by Serial
Flash and other nonvolatile memories.
Pin Configuration
1
2
3
4
8
7
6
5
S
Q
VDD
HOLD
C
Unlike Serial Flash, the FM25V02 performs write
operations at bus speed. No write delays are incurred.
Data is written to the memory array immediately
after it has been transferred to the device. The next
bus cycle may commence without the need for data
polling. The product offers very high write
endurance, orders of magnitude more endurance than
Serial Flash. Also, F-RAM exhibits lower power
consumption than Serial Flash.
W
VSS
D
1
2
3
4
8
7
6
5
VDD
/S
Q
/HOLD
C
D
/W
VSS
These capabilities make the FM25V02 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 Serial Flash can
cause data loss.
Top View
Function
Chip Select
Write Protect
Hold
Pin Name
/S
/W
/HOLD
C
Serial Clock
D
Q
VDD
VSS
Serial Data Input
Serial Data Output
Supply Voltage
Ground
The FM25V02 provides substantial benefits to users
of Serial Flash as a hardware drop-in replacement.
The devices use the high-speed SPI bus, which
enhances the high-speed write capability of F-RAM
technology. The FM25VN02 is offered with a unique
serial number that is read-only and can be used to
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
Document Number: 001-84494 Rev. **
•
198 Champion Court
•
San Jose, CA 95134-1709
•
408-943-2600
Revised February 25, 2013