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STK17TA8-WF25I Datasheet

  • STK17TA8-WF25I

  • nvTime⑩ Event Data Recorder 128K x 8 AutoStore⑩ nvSRAM wit...

  • 544.85KB

  • 22頁

  • ETC

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STK17TA8
nvTime鈩?/div>
Event Data Recorder
128K x 8
AutoStore鈩?/div>
nvSRAM
with Real-Time Clock
Product Preview
FEATURES
鈥?Data Integrity of Simtek nvSRAM Combined
with Full-Featured Real-Time Clock
鈥?25ns, 35ns and 45ns Access Times
鈥?Software or
AutoStore鈩TORE
to
Quan-
tumTrap鈩?/div>
Nonvolatile Elements
鈥?/div>
RECALL
to SRAM Initiated by Software or
Power Restore
鈥?Unlimited READ, WRITE and
RECALL
Cycles
鈥?100-Year Data Retention
鈥?Watchdog Timer
鈥?Clock Alarm with programmable Interrupts
鈥?Capacitor or battery backup for RTC
鈥?Single 3V +20%, -10% Operation
鈥?Commercial and Industrial Temperatures
鈥?Packages: 48 pin SSOP, 40 pin DIP
DESCRIPTION
The Simtek STK17TA8 combines a 1 Mbit nonvola-
tile static RAM with a full-featured real-time clock in
a reliable, monolithic integrated circuit. The embed-
ded nonvolatile elements incorporate Simtek鈥檚
QuantumTrap鈩?/div>
technology producing the world鈥檚
most reliable nonvolatile memory. The
SRAM
can be
read and written an unlimited number of times, while
independent, nonvolatile data resides in the nonvol-
atile elements.
The Real-Time Clock function provides an accurate
clock with leap year tracking and a programmable,
high accuracy oscillator. The Alarm function is pro-
grammable for one-time alarms or periodic seconds,
minutes, hours, or days. There is also a programma-
ble Watchdog Timer for process control.
BLOCK DIAGRAM
HSB
Quantum Trap
1024 x 1024
ROW DECODER
V
CCX
V
CAP
V
rtcbat
V
rtccap
A
5
A
6
A
7
A
8
A
9
A
12
A
13
A
14
A
15
A
16
DQ
0
DQ
1
DQ
2
DQ
3
DQ
4
DQ
5
DQ
6
DQ
7
STORE
STATIC RAM
ARRAY
1024 x 1024
RECALL
STORE/
RECALL
CONTROL
POWER
CONTROL
SOFTWARE
DETECT
A
0
- A
16
INPUT BUFFERS
COLUMN I/O
COLUMN DEC
RTC
X
1
X
2
INT
A
0
A
1
A
2
A
3
A
4
A
10
A
11
MUX
A
0
-
A
16
G
E
W
February 2004
1
Document Control # ML0023 rev 0.3

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