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Ramtron

FM28V100 Datasheet Preview

FM28V100 Datasheet

1Mbit Bytewide F-RAM Memory

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www.DataSheet.co.kr
Preliminary
FM28V100
1Mbit Bytewide F-RAM Memory
Features
1Mbit Ferroelectric Nonvolatile RAM
Organized as 128Kx8
High Endurance 100 Trillion (1014) Read/Writes
NoDelay™ Writes
Page Mode Operation to 33MHz
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
SRAM Replacement
JEDEC 128Kx8 SRAM pinout
60 ns Access Time, 90 ns Cycle Time
Low Power Operation
2.0V – 3.6V Power Supply
Standby Current 90 µA (typ)
Active Current 7 mA (typ)
Industry Standard Configurations
Industrial Temperature -40° C to +85° C
32-pin “Green”/RoHS Package
General Description
The FM28V100 is a 128K 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 very high write endurance make
F-RAM superior to other types of memory.
In-system operation of the FM28V100 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 toggling a chip enable pin
or simply by changing the address. The F-RAM
memory is nonvolatile due to its unique ferroelectric
memory process. These features make the FM28V100
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
A11
A9
A8
A13
WE
CE2
A15
VDD
NC*
A16
A14
A12
A7
A6
A5
A4
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
TSOP-I
32 OE
31 A10
30 CE1
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 A3
* Reserved for A17 on 2Mb
Ordering Information
FM28V100-TG
32-pin “Green”/RoHS TSOP
FM28V100-TGTR 32-pin “Green”/RoHS TSOP,
Tape & Reel
This is a product that has fixed target specifications but are subject
to change pending characterization results.
Rev. 1.2
May 2010
Ramtron International Corporation
1850 Ramtron Drive, Colorado Springs, CO 80921
(800) 545-FRAM, (719) 481-7000
http://www.ramtron.com
Page 1 of 13
Datasheet pdf - http://www.DataSheet4U.net/




Ramtron

FM28V100 Datasheet Preview

FM28V100 Datasheet

1Mbit Bytewide F-RAM Memory

No Preview Available !

www.DataSheet.co.kr
FM28V100 - 128Kx8 FRAM
A(16:0)
A(16:3)
16K x 64
F-RAM Array
A(2:0)
CE1, CE2 2
WE
OE
Control
Logic
...
Column Decoder
I/O Latch & Bus Driver
DQ(7:0)
Figure 1. Block Diagram
Pin Descriptions
Pin Name Type
A(16:0)
Input
/CE1, CE2 Input
/WE Input
/OE
DQ(7:0)
NC
VDD
VSS
Input
I/O
-
Supply
Supply
Pin Description
Address inputs: The 17 address lines select one of 131,072 bytes in the F-RAM array. The
address value is latched on the falling edge of /CE1 (while CE2 high) or the rising edge of
CE2 (while /CE1 low). Addresses A(2:0) are used for page mode read and write operations.
Chip Enable inputs: The device is selected and a new memory access begins on the falling
edge of /CE1 (while CE2 high) or the rising edge of CE2 (while /CE1 low). The entire
address is latched internally at this point. The CE2 pin is pulled up internally.
Write Enable: A write cycle begins when /WE is asserted. The rising edge causes the
FM28V100 to write the data on the DQ bus to the F-RAM array. The falling edge of /WE
latches a new column address for fast page mode write cycles.
Output Enable: When /OE is low, the FM28V100 drives the data bus when valid data is
available. Deasserting /OE high tri-states the DQ pins.
Data: 8-bit bi-directional data bus for accessing the F-RAM array.
No Connect: This pin has no internal connection.
Supply Voltage
Ground
Rev. 1.2
May 2010
Page 2 of 13
Datasheet pdf - http://www.DataSheet4U.net/


Part Number FM28V100
Description 1Mbit Bytewide F-RAM Memory
Maker Ramtron
PDF Download

FM28V100 Datasheet PDF






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