STK11C88
32Kx8 SoftStore nvSRAM
FEATURES
DESCRIPTION
• 25, 45 ns Read Access & R/W Cycle Time
• Unlimited Read/Write Endurance
• Pin Compatible with Industry Standard SRAMs
• Software-initiated STORE and RECALL
• Automatic RECALL to SRAM on Power Up
• Unlimited RECALL Cycles
The Simtek STK11C88 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.
• 1 Million Store Cycles
Data transfers under software control to the non-vol-
atile storage cell (the STORE operation). On power
up, data is automatically restored to the SRAM (the
RECALL operation). RECALL operations are also
available under software control.
• 100-Year Non-volatile Data Retention
• Single 5.0V +10% Power Supply
• Commercial and Industrial Temperatures
• 28-pin 300-mil and 330-mil SOIC Packages
(RoHS-Compliant)
The Simtek nvSRAM is the first monolithic non-
volatile 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
STORE/
RECALL
CONTROL
A5
A6
A7
A8
STORE
STATIC RAM
ARRAY
512 X 512
RECALL
A9
A11
A12
A13
A14
SOFTWARE
DETECT
A13 – A0
DQ0
DQ1
DQ2
DQ3
DQ4
DQ5
DQ6
DQ7
COLUMN I/O
COLUMN DEC
A0 A1 A2 A3 A4 A10
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.
Rev 2.0
Document Control #ML0012
Jan. 2008
1
SIMTEK [ SIMTEK CORPORATION ]
