STK14C88-3_11 Datasheet, PDF (1/18 Pages) Cypress Semiconductor – 256 Kbit (32K x 8) AutoStore nvSRAM Unlimited Read/Write endurance

STK14C88-3
256 Kbit (32K x 8) AutoStore nvSRAM
Features
■ 35 ns and 45 ns Access Times
■ Automatic Nonvolatile STORE on power loss
■ Nonvolatile STORE under Hardware or Software control
■ Automatic RECALL to SRAM on power up
■ Unlimited Read/Write endurance
■ Unlimited RECALL Cycles
■ 1,000,000 STORE Cycles
Functional Description
s _{The Cypress STK14C88-3 is a 256 Kb fast static RAM with}
a nonvolatile element in each memory cell. The embedded
n _{nonvolatile elements incorporate QuantumTrap technology}
producing the world’s most reliable nonvolatile memory. The
ig ^{SRAM provides unlimited read and write cycles, while}
independent, nonvolatile data resides in the highly reliable
s ^{QuantumTrap cell. Data transfers from the SRAM to the}
nonvolatile elements (the STORE operation) takes place
e automatically at power down. On power up, data is restored
to the SRAM (the RECALL operation) from the nonvolatile
D ^{memory. Both the STORE and RECALL operations are also}
■ 100 year Data Retention
■ Single 3.3V+0.3V Power Supply
w _{■ Commercial and Industrial Temperatures}
e _{■ 32-pin (300mil) SOIC and 32-pin (600 mil) PDIP packages}
■ RoHS compliance
available under software control.
r ^N Logic Block Diagram
fo _A5
A₆
A₇
d _A8
A₉
e A₁₁
A ₁₂
d ^A13
n ^A14
Quantum Trap
512 X 512
STORE
STATIC RAM
ARRAY
512 X 512
RECALL
V_CC
V_CAP
POWER
CONTROL
STORE/
RECALL
CONTROL
SOFTWARE
DETECT
e _DQ0
DQ ₁
m ^DQ2
DQ ₃
DQ ₄
m DQ₅
DQ ₆
Not ^RecoDQ7
COLUMN I/O
COLUMN DEC
A₀ A₁ A₂ A₃ A₄ A₁₀
HSB
- A₁₃ A₀
OE
CE
WE
Cypress Semiconductor Corporation • 198 Champion Court
Document Number: 001-50592 Rev. *D
• San Jose, CA 95134-1709 • 408-943-2600
Revised February 11, 2011
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