STK14CA8 Datasheet, PDF (1/15 Pages) List of Unclassifed Manufacturers – 128K x 8 AutoStoreTM nvSRAM QuantumTrapTM CMOS Nonvolatile Static RAM

STK14CA8
128K x 8 AutoStore^TM nvSRAM
QuantumTrap^TM CMOS
Nonvolatile Static RAM
FEATURES
• 25ns, 35ns and 45ns Access Times
• “Hands-off” Automatic STORE on Power Down
with only a small capacitor
• STORE to QuantumTrap™ Nonvolatile
Elements is Initiated by Software , device pin
or AutoStore™ on Power Down
• RECALL to SRAM Initiated by Software or
Power Up
• Unlimited READ, WRITE and RECALL Cycles
• 5mA Typical I_CC at 200ns Cycle Time
• 1,000,000 STORE Cycles to QuantumTrap™
• 100-Year Data Retention to QuantumTrap™
• Single 3V +20%, -10% Operation
• Commercial and Industrial Temperatures
• SOIC, SSOP and DIP Packages
• RoHS Compliance
BLOCK DIAGRAM
DESCRIPTION
The Simtek STK14CA8 is a fast static RAM with a
nonvolatile element in each memory cell. The
embedded nonvolatile elements incorporate
Simtek’s QuantumTrap^TM technology producing the
world’s most reliable nonvolatile memory. The
SRAM provides unlimited read and write cycles,
while independent, nonvolatile data resides in the
highly reliable QuantumTrap^TM cell. Data transfers
from the SRAM to the nonvolatile elements (the
STORE operation) takes place automatically at
power down. On power up, data is restored to the
SRAM (the RECALL operation) from the nonvolatile
memory. Both the STORE and RECALL operations
are also available under software control.
A5
A₆
A₇
A8
A₉
A₁₂
A13
A₁₄
A₁₅
A16
DQ₀
DQ₁
DQ₂
DQ3
DQ₄
DQ₅
DQ₆
DQ₇
Quantum Trap
1024 X 1024
STATIC RAM
ARRAY
1024 X 1024
STORE
RECALL
COLUMN I/O
COLUMN DEC
A0 A1 A2 A3 A4 A10 A11
V_CC
V_CAP
POWER
CONTROL
STORE/
RECALL
CONTROL
HSB
SOFTWARE
DETECT
A15 – A0
G
E
W
Figure 1. Block Diagram
December 2004
1 Document Control #ML0022 rev 1.0