STK14D88 Datasheet, PDF (1/15 Pages) List of Unclassifed Manufacturers – 32K x 8 AutoStore nvSRAM CMOS Nonvolatile Static RAM

STK14D88
32K 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 Restore
• 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
• SSOP and SOIC Packages
• RoHS Compliance
DESCRIPTION
The Simtek STK14D88 is a fast static RAM with a
nonvolatile element in each memory cell. The
embedded nonvolatile elements incorporate
Simtek’s QuantumTrap™ 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.
BLOCK DIAGRAM
A₅
A₆
A7
A₈
A9
A₁₁
A₁₂
A13
A₁₄
DQ₀
DQ₁
DQ₂
DQ3
DQ₄
DQ₅
DQ₆
DQ₇
Quatum Trap
512 X 512
STATIC RAM
ARRAY
512 X 512
STORE
RECALL
COLUMN I/O
COLUMN DEC
A₀ A₁ A₂ A₃ A₄ A₁₀
V_CC
V_CAP
POWER
CONTROL
STORE/
RECALL
CONTROL
HSB
SOFTWARE
DETECT
A13 – A0
G
E
W
Figure 1. Block Diagram
April 2005
1 Document Control #ML0033 rev 1.2