FM1608B Datasheet, PDF (1/11 Pages) Ramtron International Corporation – 64Kb Bytewide 5V F-RAM Memory

Preliminary
FM1608B
64Kb Bytewide 5V F-RAM Memory
Features
64Kbit Ferroelectric Nonvolatile RAM
• Organized as 8,192 x 8 bits
• High Endurance 1 Trillion (10¹²) Read/Writes
• 38 year Data Retention (@ +75°C)
• NoDelay™ Writes
• Advanced High-Reliability Ferroelectric Process
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
Description
The FM1608B 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 38 years while
eliminating the reliability concerns, functional
disadvantages and system design complexities of
battery-backed SRAM (BBSRAM). Fast write timing
and high write endurance make F-RAM superior to
other types of nonvolatile memory.
In-system operation of the FM1608B is very similar
to other RAM devices. Minimum read- and write-
cycle times are equal. The F-RAM memory, however,
is nonvolatile due to its unique ferroelectric memory
process. Unlike BBSRAM, the FM1608B is a truly
monolithic nonvolatile memory. It provides the same
functional benefits of a fast write without the
disadvantages associated with modules and batteries
or hybrid memory solutions.
These capabilities make the FM1608B 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. Device
specifications are guaranteed over an industrial
temperature range of -40°C to +85°C.
SRAM & EEPROM Compatible
• JEDEC 8Kx8 SRAM & EEPROM pinout
• 70 ns Access Time
• 130 ns Cycle Time
Low Power Operation
• 15 mA Active Current
• 25 µA (typ.) Standby Current
Industry Standard Configuration
• Industrial Temperature -40°C to +85°C
• 28-pin “Green”/RoHS SOIC Package
Pin Configuration
NC
1
A12
2
A7
3
A6
4
A5
5
A4
6
A3
7
A2
8
A1
9
A0
10
DQ0
11
DQ1
12
DQ2
13
VSS
14
28
VDD
27
WE
26
NC
25
A8
24
A9
23
A11
22
OE
21
A10
20
CE
19
DQ7
18
DQ6
17
DQ5
16
DQ4
15
DQ3
Ordering Information
FM1608B-SG
28-pin “Green”/RoHS SOIC
This is a product that has fixed target specifications but are subject
to change pending characterization results.
Rev. 1.2
Mar. 2011
Ramtron International Corporation
1850 Ramtron Drive, Colorado Springs, CO 80921
(800) 545-FRAM, [phone]
http://www.ramtron.com
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