STK11C48
2K x 8 nvSRAM
QuantumTrap™ CMOS
Nonvolatile Static RAM
Obsolete - Not Recommend for new Designs
FEATURES
DESCRIPTION
• 25ns, 35ns and 45ns Access Times
The Simtek STK11C48 is a fast static RAM with a
nonvolatile element incorporated in each static
memory cell. The SRAM can be read and written an
unlimited number of times, while independent, non-
volatile data resides in the Nonvolatile Elements.
Data transfers from the SRAM to the Nonvolatile Ele-
ments (the STORE operation), or from Nonvolatile
Elements to SRAM (the RECALL operation), take
place using a software sequence. Transfers from the
Nonvolatile Elements to the SRAM (the RECALL
operation) also take place automatically on restora-
tion of power.
• STORE to Nonvolatile Elements Initiated by
Software
• RECALL to SRAM Initiated by Software or
Power Restore
• 10mA Typical ICC at 200ns Cycle Time
• Unlimited READ, WRITE and RECALL Cycles
• 1,000,000 STORE Cycles to Nonvolatile Ele-
ments
• 100-Year Data Retention in Nonvolatile Ele-
ments
• Commercial and Industrial Temperatures
• 28-Pin 300 mil PDIP, 300 mil SOIC and
350 mil SOIC Packages
BLOCK DIAGRAM
PIN CONFIGURATIONS
1
NC
NC
28
27
26
25
24
23
22
21
20
19
18
17
16
15
V
CC
W
NC
Quantum Trap
32 x 512
2
3
A
A
7
4
A
6
5
4
3
8
A5
5
A
A
A
A
A
9
NC
G
STORE
STORE/
RECALL
CONTROL
6
A6
A7
A8
A9
7
STATIC RAM
ARRAY
8
RECALL
A
2
10
9
A
E
1
0
32 x 512
10
11
12
13
14
A
DQ
DQ
7
6
5
DQ
0
28 - 300 PDIP
28 - 300 SOIC
28 - 350 SOIC
DQ
DQ
1
2
DQ
DQ
DQ
4
3
SOFTWARE
DETECT
A0 - A10
V
SS
DQ0
DQ1
DQ2
DQ3
DQ4
DQ5
DQ6
DQ7
COLUMN I/O
PIN NAMES
COLUMN DEC
A
- A
Address Inputs
Write Enable
Data In/Out
Chip Enable
Output Enable
Power (+ 5V)
Ground
0
10
W
A0 A1 A2 A3 A4 A10
DQ - DQ
0
G
7
E
E
G
W
V
V
CC
SS
March 2006
1
Document Control # ML0003 rev 0.2
SIMTEK [ SIMTEK CORPORATION ]
