STK11C88-3 Datasheet, PDF (1/10 Pages) Simtek Corporation – 32K x 8 nvSRAM 3.3V QuantumTrap™ CMOS Nonvolatile Static RAM

STK11C88-3
32K x 8 nvSRAM
3.3V QuantumTrap™ CMOS
Nonvolatile Static RAM
Obsolete - Not Recommend for new Deisgns
FEATURES
• 35, 45ns and 55ns Access Times
• STORE to Nonvolatile Elements Initiated by
Software
• RECALL to SRAM Initiated by Software or
Power Restore
• 10 mA Typical Icc at 200 nsec Cycle Time
• Unlimited READ, WRITE and RECALL Cycles
• 1,000,000 STORE Cycles to Nonvolatile Ele-
ments
• 100-Year Data Retention in Nonvolatile Ele-
ments
• Single 3.3V+ 0.3V Operation
• Commercial and Industrial Temperatures
• 28-Pin DIP and SOIC Packages
DESCRIPTION
The Simtek STK11C88-3 is a fast static RAM with a
nonvolatile element incorporated in each static
memory cell. The SRAM can be read and written an
unlimited number of times, while independent non-
volatile data resides in Nonvolatile Elements. Data
transfers from the SRAM to the Nonvolatile Elements
(the STORE operation), or from Nonvolatile Elements
to SRAM (the RECALL operation) are initiated using a
software sequence. Data transfers from the Nonvol-
atile Elements to the SRAM (the RECALL operation)
also occur upon restoration of power.
BLOCK DIAGRAM
PIN CONFIGURATIONS
A₅
A₆
A₇
A₈
A₉
A₁₁
A₁₂
A₁₃
A₁₄
DQ₀
DQ₁
DQ₂
DQ₃
DQ₄
DQ₅
DQ₆
DQ₇
QUANTUM TRAP
512 x 512
STATIC RAM
ARRAY
512 x 512
STORE
RECALL
COLUMN I/O
COLUMN DEC
A₀ A₁ A₂ A₃ A₄A₁₀
STORE/
RECALL
CONTROL
SOFTWARE
DETECT
G
E
W
A₀ - A₁₃
A₁₄ 1
A₁₂ 2
A₇ 3
A₆ 4
A₅ 5
A₄ 6
A₃ 7
A₂ 8
A₁ 9
A₀ 10
DQ₀ 11
DQ₁ 12
DQ₂ 13
V_SS 14
28 V_CC
27 W
26 A₁₃
25 A₈
24 A₉
23 A₁₁
22 G
21 A₁₀
20 E
19 DQ_{7 28 - 300 PDIP}
18
17
DQ₆
DQ₅
28 - 600 PDIP
16 DQ₄ 28 - 300 SOIC
15 DQ_{3 28 - 350 SOIC}
PIN NAMES
A₀ - A₁₄
W
Address Inputs
Write Enable
DQ₀ - DQ₇
E
Data In/Out
Chip Enable
G
Output Enable
V_CC
Power (+ 3.3V)
V_SS
Ground
March 2006
1 Document Control # ML0013 rev 0.2