STK14EC8_08 Datasheet, PDF (1/19 Pages) Simtek Corporation – 512Kx8 Autostore nvSRAM

Preliminary
STK14EC8
512Kx8 Autostore nvSRAM
FEATURES
• 15, 25, 45 ns Read Access and 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 Endurance
• 20-Year Non-volatile Data Retention
• Single 3.0V +20%, -10% Operation
• Commercial, Industrial Temperatures
• 44-pin 400-mil TSOPII (RoHS-Compliant)
• 48-ball Fine Pitch Ball Grid Array (FBGA)
DESCRIPTION
The Simtek STK14EC8 is a 4MB 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 highest performance,
most reliable non-volatile memory available.
BLOCK DIAGRAM
A₀
A₁
A₂
A₃
A₄
A₅
A₆
A₇
A₈
A₁₇
A₁₈
DQ₀
DQ₁
DQ₂
DQ₃
DQ₄
DQ₅
DQ₆
DQ₇
Quantum Trap
2048 X 2048
STATIC RAM
ARRAY
2048 X 2048
STORE
RECALL
COLUMN I/O
COLUMN DEC
A₉ A₁₀ A₁₁ A₁₂ A₁₃ A₁₄ A₁₅ A₁₆
This is a product in development that has fixed tar-
get specifications that are subject to change pend-
1
ing characterization results.
Simtek Confidential & Proprietary
V_CC
V_CAP
POWER
CONTROL
STORE/
RECALL
CONTROL
HSB
SOFTWARE
DETECT
A₁₈ – A₀
G
E
W
Document Control #ML0060 ^{Rev 1.1}
Jan, 2008