FM28V020_11 Datasheet, PDF (1/14 Pages) Ramtron International Corporation – 256Kbit Bytewide F-RAM Memory

Pre-Production
FM28V020
256Kbit Bytewide F-RAM Memory
Features
256Kbit Ferroelectric Nonvolatile RAM
 Organized as 32K x 8
 10¹⁴ 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.
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
Pin Configuration
NC
1
OE
2
A11
3
A9
4
A8
5
A13
6
WE
7
VDD
8
A14
9
A12
10
A7
11
A6
12
A5
13
A4
14
A3
15
NC
16
TSOP-I
32
NC
31
A10
30
CE
29
DQ7
28
DQ6
27
DQ5
26
DQ4
25
DQ3
24
VSS
23
DQ2
22
DQ1
21
DQ0
20
A0
19
A1
18
A2
17
NC
A14
1
28
A12
2
27
A7
3
26
A6
4
25
A5
5
24
A4
6
23
A3
A2
7
8
SOIC
22
21
A1
9
20
A0
10
19
DQ0
11
18
DQ1
12
17
DQ2
13
16
VSS
14
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
Ramtron International Corporation
1850 Ramtron Drive, Colorado Springs, CO 80921
(800) 545-FRAM, [phone]
http://www.ramtron.com
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