Pre-Production
FM28V020
256Kbit Bytewide F-RAM Memory
Features
256Kbit Ferroelectric Nonvolatile RAM
Organized as 32K x 8
10
14
Read/Write Cycles
NoDelay™ Writes
Page Mode Operation
Advanced High-Reliability Ferroelectric Process
Superior to Battery-backed SRAM 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 Replacement
JEDEC 32Kx8 SRAM pinout
70 ns Access Time, 140 ns Cycle Time
Low Power Operation
2.0V – 3.6V Power Supply
Standby Current 90
A
(typ)
Active Current 7 mA (typ)
Industry Standard Configurations
Industrial Temperature -40 C to +85 C
28-pin “Green”/RoHS SOIC (-SG)
32-pin “Green”/RoHS TSOP (-TG)
General Description
The FM28V020 is a 32K x 8 nonvolatile memory that
reads and writes like a standard SRAM. A
ferroelectric random access memory or F-RAM is
nonvolatile, which means that data is retained after
power is removed. It provides data retention for over
10 years while eliminating the reliability concerns,
functional disadvantages, and system design
complexities of battery-backed SRAM (BBSRAM).
Fast write timing and virtually unlimited write
endurance make F-RAM superior to other types of
memory.
In-system operation of the FM28V020 is very similar
to other RAM devices and can be used as a drop-in
replacement for standard SRAM. Read and write
cycles may be triggered by /CE or simply by
changing the address. The F-RAM memory is
nonvolatile due to its unique ferroelectric memory
process. These features make the FM28V020 ideal
for nonvolatile memory applications requiring
frequent or rapid writes in the form of an SRAM.
Device specifications are guaranteed over the
industrial temperature range -40°C to +85°C.
Pin Configuration
NC
OE
A11
A9
A8
A13
WE
VDD
A14
A12
A7
A6
A5
A4
A3
NC
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
NC
A10
CE
DQ7
DQ6
DQ5
DQ4
DQ3
VSS
DQ2
DQ1
DQ0
A0
A1
A2
NC
TSOP-I
A14
A12
A7
A6
A5
A4
A3
A2
A1
A0
DQ0
DQ1
DQ2
VSS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
SOIC
28
27
26
25
24
23
22
21
20
19
18
17
16
15
VDD
WE
A13
A8
A9
A11
OE
A10
CE
DQ7
DQ6
DQ5
DQ4
DQ3
Ordering Information
FM28V020-SG
28-pin “Green”/RoHS SOIC
FM28V020-SGTR
28-pin “Green”/RoHS SOIC,
Tape & Reel
FM28V020-TG
32-pin “Green”/RoHS TSOP
FM28V020-TGTR
32-pin “Green”/RoHS TSOP,
Tape & Reel
This is a product in the pre-production phase of development. Device
characterization is complete and Ramtron does not expect to change the
specifications. Ramtron will issue a Product Change Notice if any
specification changes are made.
Rev. 2.1
June 2011
Ramtron International Corporation
1850 Ramtron Drive, Colorado Springs, CO 80921
(800) 545-FRAM, (719) 481-7000
http://www.ramtron.com
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RAMTRON [ RAMTRON INTERNATIONAL CORPORATION ]
