This product conforms specifications per the terms of the Ramtron Ramtron International Corporation
standard warranty. The product has completed Ramtron’s internal 1850 Ramtron Drive, Colorado Springs, CO 80921
qualification testing and has reached production status. (800) 545-FRAM, (719) 481-7000
http://www.ramtron.com
Rev. 3.0
Sept. 2008 Page 1of 12
FM24C512
512Kb FRAM Serial Memory
Features
512Kbit Ferroelectric Nonvolatile RAM
• Organized as 65,536 x 8 bits
• High Endurance 10 Billion (10
10
) Read/Writes
• 45 year Data Retention
• NoDelay™ Writes
• Advanced High-Reliability Ferroelectric Process
Fast Two-wire Serial Interface
• Up to 1 MHz Maximum Bus Frequency
• Supports Legacy Timing for 100 kHz & 400 kHz
Low Power Operation
• 5V Operation
• 250 µA Active Current (100 kHz)
• 120 µA Standby Current
Industry Standard Configuration
• Industrial Temperature -40° C to +85° C
• 8-pin “Green”/RoHS EIAJ SOIC Package
Description
The FM24C512 is a 512-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.
The FM24C512 performs write operations at bus
speed. No write delays are incurred. The next bus
cycle may commence immediately without the need
for data polling. In addition, the product offers write
endurance orders of magnitude higher than
EEPROM. Also, FRAM exhibits much lower power
during writes than EEPROM since write operations
do not require an internally elevated power supply
voltage for write circuits.
These capabilities make the FM24C512 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
combination of features allows more frequent data
writing with less overhead for the system.
The FM24C512 is available in an 8-pin EIAJ SOIC
package using an industry standard two-wire
protocol. Ramtron’s “green” packages are RoHS
compliant. Specifications are guaranteed over an
industrial temperature range of -40°C to +85°C.
Pin Configuration
NC
A1
A2
VSS
VDD
WP
SCL
SDA
1
2
3
4
8
7
6
5
Pin Names Function
A1,A2 Device Select Address
SDA Serial Data/Address
SCL Serial Clock
WP Write Protect
VSS Ground
VDD Supply Voltage 5V
Ordering Information
FM24C512-G “Green”/RoHS 8-pin EIAJ SOIC
剩余11页未读，继续阅读
资源评论
