DataSheetWiki


FM25W256 fiches techniques PDF

Ramtron - 256Kb Wide Voltage SPI F-RAM

Numéro de référence FM25W256
Description 256Kb Wide Voltage SPI F-RAM
Fabricant Ramtron 
Logo Ramtron 





1 Page

No Preview Available !





FM25W256 fiche technique
www.DataSheet.co.kr
Preliminary
FM25W256
256Kb Wide Voltage SPI F-RAM
Features
256K bit Ferroelectric Nonvolatile RAM
Organized as 32,768 x 8 bits
High Endurance 100 Trillion (1014) Read/Writes
38 Year Data Retention (@ +75ºC)
NoDelay™ Writes
Advanced High-Reliability Ferroelectric Process
Very Fast Serial Peripheral Interface - SPI
Up to 20 MHz Frequency
Direct Hardware Replacement for EEPROM
SPI Mode 0 & 3 (CPOL, CPHA=0,0 & 1,1)
Description
The FM25W256 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
EEPROM and other nonvolatile memories.
The FM25W256 performs write operations at bus
speed. No write delays are incurred. Data is written to
the memory array immediately after it has been
successfully transferred to the device. The next bus
cycle may commence immediately without the need
for data polling. In addition, the product offers
substantial write endurance compared with other
nonvolatile memories. The FM25W256 is capable of
supporting 1014 read/write cycles, or 100 million
times more write cycles than EEPROM.
These capabilities make the FM25W256 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 FM25W256 provides substantial benefits to
users of serial EEPROM as a hardware drop-in
replacement. The FM25W256 uses the high-speed
SPI bus, which enhances the high-speed write
capability of F-RAM technology. Device
specifications are guaranteed over an industrial
temperature range of -40°C to +85°C.
Write Protection Scheme
Hardware Protection
Software Protection
Low Power Operation
Wide Voltage Operation 2.7V – 5.5V
15 µA (typ.) Standby Current
Industry Standard Configurations
Industrial Temperature -40°C to +85°C
8-pin “Green”/RoHS SOIC (-G)
Pin Configuration
CS
SO
WP
VSS
1
2
3
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 (2.7 to 5.5V)
Ground
Ordering Information
FM25W256-G
“Green”/RoHS 8-pin SOIC
FM25W256-GTR “Green”/RoHS 8-pin SOIC,
Tape & Reel
This is a product that has fixed target specifications but are subject
to change pending characterization results.
Rev. 1.3
Feb. 2011
Ramtron International Corporation
1850 Ramtron Drive, Colorado Springs, CO 80921
(800) 545-FRAM, (719) 481-7000
http://www.ramtron.com
Page 1 of 13
Datasheet pdf - http://www.DataSheet4U.net/

PagesPages 13
Télécharger [ FM25W256 ]


Fiche technique recommandé

No Description détaillée Fabricant
FM25W256 256-Kbit (32K x 8) Serial (SPI) F-RAM Cypress Semiconductor
Cypress Semiconductor
FM25W256 256Kb Wide Voltage SPI F-RAM Ramtron
Ramtron

US18650VTC5A

Lithium-Ion Battery

Sony
Sony
TSPC106

PCI Bus Bridge Memory Controller

ATMEL
ATMEL
TP9380

NPN SILICON RF POWER TRANSISTOR

Advanced Semiconductor
Advanced Semiconductor


www.DataSheetWiki.com    |   2020   |   Contactez-nous  |   Recherche