STK10C68
STK10C68-M SMD#5962-93056
8K x 8 nvSRAM
QuantumTrap™ CMOS
Nonvolatile Static RAM
Obsolete - Not Recommend for new Designs
DESCRIPTION
FEATURES
The Simtek STK10C68 is a fast static RAM with a nonvol-
atile element incorporated in each static memory cell. The
SRAM can be read and written an unlimited number of
times, while independent nonvolatile data resides in Non-
volatile Elements. Data may easily be transferred from
the SRAM to the Nonvolatile Elements (the STORE oper-
ation), or from the Nonvolatile Elements to the SRAM
(the RECALL operation), using the NE pin. Transfers
from the Nonvolatile Elements to the SRAM (the
RECALL operation) also take place automatically on
restoration of power. The STK10C68 combines the high
performance and ease of use of a fast SRAM with nonvol-
atile data integrity.
• 25ns, 35ns, 45ns and 55ns Access Times
• STORE to Nonvolatile Elements Initiated by
Hardware
• RECALL to SRAM Initiated by Hardware or
Power Restore
• Automatic STORE Timing
• 10mA Typical ICC at 200ns Cycle Time
• Unlimited READ, WRITE and RECALL Cycles
• 1,000,000 STORE Cycles to Nonvolatile Ele-
ments (Industrial/Commercial)
• 100-Year Data Retention (Industrial/Commer-
cial)
• Commercial, Industrial and Military Tempera-
tures
• 28-Pin DIP, SOIC and LCC Packages
The STK10C68 features industry-standard pinout for non-
volatile RAMs. MIL-STD-883 and Standard Military Draw-
ing (SMD #5962-93056) devices are available.
PIN CONFIGURATIONS
BLOCK DIAGRAM
1
NE
28
27
26
25
24
23
22
21
20
19
18
17
16
15
V
CC
W
NC
2
A
QUANTUM TRAP
128 x 512
12
3
A
A
A
A
A
A
A
A
DQ
7
6
5
4
3
2
4
A
8
5
A
A
G
9
A
5
6
11
STORE
7
A
A
A
A
A
A
6
8
A
E
10
9
1
0
7
STATIC RAM
ARRAY
10
11
12
13
14
DQ
DQ
DQ
7
RECALL
0
6
5
8
DQ
DQ
1
128 x 512
DQ
DQ
2
4
3
9
V
SS
11
12
28 - DIP
28 - SOIC
28 - LCC
DQ0
DQ1
DQ2
DQ3
DQ4
DQ5
DQ6
DQ7
COLUMN I/O
STORE/
RECALL
CONTROL
PIN NAMES
COLUMN DEC
A
- A
12
Address Inputs
Write Enable
Data In/Out
0
W
A3 A
4 A10
A0 A1 A2
DQ - DQ
0
7
G
NE
E
Chip Enable
Output Enable
Nonvolatile Enable
Power (+ 5V)
Ground
G
E
NE
W
V
CC
SS
V
March 2006
1
Document Control # ML0006 rev 0.2
SIMTEK [ SIMTEK CORPORATION ]
