STK16C88-3
32Kx8 AutoStore+ nvSRAM
FEATURES
• Fast 35 ns Read Access & R/W Cycle Time
• Directly Replaces Battery-Backed SRAM
Modules such as Dallas/Maxim DS1230W
• Unlimited Read/Write Endurance
• Automatic Non-volatile STORE on Power Loss
• Automatic RECALL to SRAM on Power Up
• Non-Volatile STORE and RECALL Under
Software Control
• 1 Million STORE Cycles
• 100-Year Non-volatile Data Retention
• Single 3.3V +0.3V Power Supply
• Commercial and Industrial Temperatures
• 28-pin 600-mil PDIP Package (RoHS-Compliant)
DESCRIPTION
The Simtek STK16C88-3 is a 256Kb fast static RAM
with a non-volatile Quantum Trap storage element
included with each memory cell.
The SRAM provides the fast access & cycle times,
ease of use and unlimited read & write endurance of
a normal SRAM.
Data transfers automatically to the non-volatile stor-
age cells when power loss is detected (the
STORE
operation). On power up, data is automatically
restored to the SRAM (the
RECALL
operation). Both
STORE and RECALL operations are also available
under software control.
The Simtek nvSRAM is the first monolithic non-vola-
tile memory to offer unlimited writes and reads. It is
the highest performance, most reliable non-volatile
memory available.
BLOCK DIAGRAM
QUANTUM TRAP
512 x 512
A
5
A
6
A
7
A
8
A
9
A
11
A
12
A
13
A
14
DQ
0
DQ
1
DQ
2
DQ
3
DQ
4
DQ
5
DQ
6
DQ
7
ROW DECODER
STORE
STATIC RAM
ARRAY
512 X 512
RECALL
STORE/
RECALL
CONTROL
SOFTWARE
DETECT
A
13
– A
0
INPUT BUFFERS
COLUMN I/O
COLUMN DEC
A
0
A
1
A
2
A
3
A
4
A
10
G
E
W
This product conforms to specifications per the
terms of Simtek standard warranty. The product
has completed Simtek internal qualification testing
and has reached production status.
1
Document Control #ML0019 Rev 2.0
Jan, 2008
SIMTEK [ SIMTEK CORPORATION ]
