STK14D88 Datasheet, PDF (1/19 Pages) List of Unclassifed Manufacturers – 32K x 8 AutoStore nvSRAM CMOS Nonvolatile Static RAM

STK14D88
32Kx8 Autostore nvSRAM
FEATURES
• 25, 35, 45 ns Read Access & R/W Cycle Time
• Unlimited Read/Write Endurance
• Automatic Non-volatile STORE on Power Loss
• Non-Volatile STORE Under Hardware or Software
Control
• Automatic RECALL to SRAM on Power Up
• Unlimited RECALL Cycles
• 200K STORE Cycles
• 20-Year Non-volatile Data Retention
• Single 3V +20%, -10% Power Supply
• Commercial, Industrial Temperatures
• Small Footprint SOIC & SSOP Packages (RoHS-
Compliant
DESCRIPTION
The Simtek STK14D88 is a 256Kb fast static RAM
with a non-volatile Quantum Trap storage element
included with each memory cell.
The SRAM provides the fast access & cycle times,
ease of use and unlimited read & write endurance of
a normal SRAM.
Data transfers automatically to the non-volatile stor-
age cells when power loss is detected (the STORE
operation). On power up, data is automatically
restored to the SRAM (the RECALL operation). Both
STORE and RECALL operations are also available
under software control.
The Simtek nvSRAM is the first monolithic non-vola-
tile memory to offer unlimited writes and reads. It is
the highest performance, most reliable non-volatile
memory available.
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
This product conforms to specifications per the
terms of Simtek standard warranty. The product
1
has completed Simtek internal qualification testing
and has reached production status.
V_CC
V_CAP
POWER
CONTROL
STORE/
RECALL
CONTROL
HSB
SOFTWARE
DETECT
A₁₃ – A₀
G
E
W
Document Control #ML0033 ^{Rev 1.7}
February 2007