STK14EE8
1Mx8 AutoStore nvSRAM
Preliminary
DESCRIPTION
FEATURES
The Simtek STK14EE8 is an 8MB fast static RAM
with a non-volatile Quantum Trap storage element
included with each memory cell.
• 25, 45 ns Read Access and R/W Cycle Time
• Unlimited Read/Write Endurance
• Automatic Non-volatile STORE on Power Loss
The SRAM provides the fast access & cycle times,
ease of use and unlimited read & write endurance of
a normal SRAM.
• Non-Volatile STORE Under Hardware or Software
Control
• Automatic RECALL to SRAM on Power Up
• Unlimited RECALL Cycles
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.
• 1 Million STORE Endurance
• 20-Year Non-volatile Data Retention
• Single 3.0V +20%, -10% Operation
• Commercial, Industrial Temperatures
• 44-pin 400-mil TSOPII (RoHS-Compliant)
• 48-ball Fine Pitch Ball Grid Array (FBGA)
The Simtek nvSRAM is the highest performance,
most reliable non-volatile memory available.
BLOCK DIAGRAM
VCC
VCAP
Quantum Trap
A0
A1
A2
2048 x 2048 x 2
POWER
CONTROL
STORE
A3
A4
A5
A6
A7
STORE/
RECALL
CONTROL
STATIC RAM
ARRAY
2048 x 2048 x 2
RECALL
HSB
A8
A17
A18
A19
SOFTWARE
DETECT
A19 – A0
DQ0
DQ1
DQ2
DQ3
DQ4
DQ5
DQ6
DQ7
COLUMN I/O
COLUMN DEC
A9 A10 A11 A12 A13 A14 A15 A16
G
E
W
This is a product in development that has fixed tar-
get specifications that are subject to change pend-
ing characterization results.
1
Rev 1.0
Document Control #ML0068
March, 2008
Simtek Confidential & Proprietary
SIMTEK [ SIMTEK CORPORATION ]
