STK11C68 (SMD5962–92324)
8Kx8 SoftStore nvSRAM
FEATURES
DESCRIPTION
The Simtek STK11C68 is a 64Kb fast static RAM
with a nonvolatile Quantum Trap storage element
included with each memory cell.
• 25, 35, 45, and 55 ns Read Access & R/W Cycle
Times
• Unlimited Read/Write Endurance
• Pin compatible with Industry Standard SRAMs
• Software-initiated Non-Volatile STORE
• Automatic RECALL to SRAM on Power Up
• Unlimited RECALL cycles
The SRAM provides the fast access & cycle times,
ease of use, and unlimited read & write endurance
of a normal SRAM.
Data transfers under software control to the non-vol-
atile storage cells (the STORE operation). On
power-up, data is automatically restored to the
SRAM (the RECALL operation). RECALL operations
are also available under software control.
• 1 Million STORE Cycles
• 100-Year Non-volatile Data Retention
• Single 5V + 10% Operation
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.
• Commercial, Industrial, and Military Tempera-
tures
• 28 pin 330 mil SOIC (RoHS-Compatible)
• 28-pin CDIP and LCC packages
BLOCK DIAGRAM
BLOCK DIAGRAM
QUANTUM TRAP
128 x 512
STORE/
RECALL
CONTROL
STORE
A5
A6
A7
A8
STATIC RAM
ARRAY
128 X 512
RECALL
A9
A11
A12
SOFTWARE
A0 – A12
DETECT
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 0.3
Document Control #ML0007
February, 2007
1
SIMTEK [ SIMTEK CORPORATION ]
