FM25L16_06 Datasheet, PDF (1/14 Pages) Ramtron International Corporation – 16Kb FRAM Serial 3V Memory

FM25L16
16Kb FRAM Serial 3V Memory
Features
16K bit Ferroelectric Nonvolatile RAM
• Organized as 2,048 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 18 MHz Frequency
• Direct Hardware Replacement for EEPROM
• SPI Mode 0 & 3 (CPOL, CPHA=0,0 & 1,1)
Description
The FM25L16 is a 16-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 FM25L16 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 product offers
virtually unlimited write endurance, orders of
magnitude more endurance than EEPROM. FRAM
also exhibits much lower power during writes than
EEPROM.
These capabilities make the FM25L16 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 FM25L16 provides substantial benefits to users
of serial EEPROM as a hardware drop-in
replacement. The FM25L16 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.
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. 3.0
Aug. 2006
Sophisticated 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
• “Green”/RoHS 8-pin SOIC Package
• “Green”/RoHS 8-pin TDFN Package
• TDFN Footprint Conforms to TSSOP-8
Pin Configuration
CS
1
SO
2
WP
3
VSS
4
8
VDD
7
HOLD
6
SCK
5
SI
/CS 1 _{Top View 8} VDD
SO 2
7 /HOLD
/WP ³
6 _SCK
VSS ⁴
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
Ordering Information
FM25L16-G
“Green”/RoHS 8-pin SOIC
FM25L16-DG “Green”/RoHS 8-pin TDFN
Ramtron International Corporation
1850 Ramtron Drive, Colorado Springs, CO 80921
(800) 545-FRAM, [phone]
www.ramtron.com
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