FM1608
64Kb Bytewide F-RAM Memory
Features
64K bit Ferroelectric Nonvolatile RAM
• Organized as 8,192 x 8 bits
• High Endurance 1 Trillion (1012) Read/Writes
• 45 year Data Retention
• NoDelay™ Writes
• Advanced High-Reliability Ferroelectric Process
SRAM & EEPROM Compatible
• JEDEC 8Kx8 SRAM & EEPROM pinout
• 120 ns Access Time
• 180 ns Cycle Time
Low Power Operation
• 15 mA Active Current
• 20 µA Standby Current
D
E
D S
N N 08
E G 6W
M SI 1
M E r FM
O D o
C
8B
E W 60
R E M1
T N :F
O R ves
N O ati
F tern
Superior to BBSRAM Modules
• No battery concerns
• Monolithic reliability
• True surface mount solution, no rework steps
• Superior for moisture, shock, and vibration
• Resistant to negative voltage undershoots
Industry Standard Configuration
• Industrial Temperature -40° C to +85° C
• 28-pin SOIC or DIP
• “Green”/RoHS Packaging
Description
Pin Configuration
The FM1608 is a 64-kilobit nonvolatile memory
employing an advanced ferroelectric process. A
ferroelectric random access memory or F-RAM is
nonvolatile but operates in other respects as a RAM.
It provides data retention for 45 years while
eliminating the reliability concerns, functional
disadvantages and system design complexities of
battery-backed SRAM. Its fast write and high write
endurance make it superior to other types of
nonvolatile memory.
In-system operation of the FM1608 is very similar to
other RAM based devices. Minimum read- and writecycle times are equal. The F-RAM memory, however,
is nonvolatile due to its unique ferroelectric memory
process. Unlike BBSRAM, the FM1608 is a truly
monolithic nonvolatile memory. It provides the same
functional benefits of a fast write without the serious
disadvantages associated with modules and batteries
or hybrid memory solutions.
Al
These capabilities make the FM1608 ideal for
nonvolatile memory applications requiring frequent
or rapid writes in a bytewide environment. The
availability of a true surface-mount package improves
the manufacturability of new designs, while the DIP
package facilitates simple design retrofits. The
FM1608 offers guaranteed operation 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. 3.4
Nov. 2010
NC
1
28
VDD
A12
2
27
WE
A7
3
26
NC
A6
4
25
A8
A5
5
24
A9
A4
6
23
A11
A3
7
22
OE
A2
8
21
A10
A1
9
20
CE
A0
10
19
DQ7
DQ0
11
18
DQ6
DQ1
12
17
DQ5
DQ2
13
16
DQ4
VSS
14
15
DQ3
Ordering Information
120 ns access, 28-pin “Green” DIP
120 ns access, 28-pin “Green” SOIC
FM1608-120-PG
FM1608-120-SG
Ramtron International Corporation
1850 Ramtron Drive, Colorado Springs, CO 80921
(800) 545-FRAM, (719) 481-7000
http://www.ramtron.com
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