FM1608
64Kb Bytewide FRAM Memory
Features
64K bit Ferroelectric Nonvolatile RAM
•
Organized as 8,192 x 8 bits
•
High endurance 10 Billion (10
10
) read/writes
•
10 year data retention at 85° C
•
NoDelay™ write
•
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
SRAM & EEPROM Compatible
•
JEDEC 8Kx8 SRAM & EEPROM pinout
•
120 ns access time
•
180 ns cycle time
•
Equal access & cycle time for reads and writes
Low Power Operation
•
15 mA active current
•
20
µA
standby current
Industry Standard Configuration
•
Industrial temperature -40° C to +85° C
•
28-pin SOP or DIP
Description
The FM1608 is a 64-kilobit nonvolatile memory
employing an advanced ferroelectric process. A
ferroelectric random access memory or FRAM is
nonvolatile but operates in other respects as a RAM.
It provides data retention for 10 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. Memory read- and write-
cycles require equal times. The FRAM 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.
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.
Pin Configuration
NC
A12
A7
A6
A5
A4
A3
A2
A1
A0
DQ0
DQ1
DQ2
VSS
VDD
WE
NC
A8
A9
A11
OE
A10
CE
DQ7
DQ6
DQ5
DQ4
DQ3
Ordering Information
FM1608-120-P
120 ns access, 28-pin plastic DIP
FM1608-120-S
120 ns access, 28-pin SOP
This data sheet contains design specifications for product development.
These specifications may change in any manner without notice
Ramtron International Corporation
1850 Ramtron Drive, Colorado Springs, CO 80921
(800) 545-FRAM, (719) 481-7000, Fax (719) 481-7058
www.ramtron.com
28 July 2000
1/12
RAMTRON [ RAMTRON INTERNATIONAL CORPORATION ]
