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STK17TA8-RF25TR 数据表(PDF) 1 Page - Simtek Corporation

部件名 STK17TA8-RF25TR
功能描述  128Kx8 Autostore nvSRAM With Real-Time Clock
Download  29 Pages
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制造商  SIMTEK [Simtek Corporation]
网页  http://www.simtek.com
标志 SIMTEK - Simtek Corporation

STK17TA8-RF25TR 数据表(HTML) 1 Page - Simtek Corporation

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STK17TA8
1
This product conforms to specifications per the
terms of Simtek standard warranty. The product
has completed Simtek internal qualification testing
and has reached production status.
Jan, 2008
Document Control #ML0025 Rev 2.0
FEATURES
• nvSRAM Combined With Integrated Real-Time
Clock Functions (RTC, Watchdog Timer, Clock
Alarm, Power Monitor)
• Capacitor or Battery Backup for RTC
• 25, 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 3 V +20%, -10% Power Supply
• Commercial and Industrial Temperatures
• 48-pin 300-mil SSOP Package (RoHS-Compliant)
DESCRIPTION
The Simtek STK17TA8 combines a 1Mb non-volatile
static RAM (nvSRAM) with a full-featured real-time
clock in a reliable, monolithic integrated circuit.
The 1Mbit nvSRAM is a 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 storage 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 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 minutes,
hours, or days alarms. There is also a programma-
ble watchdog timer for processor control.
BLOCK DIAGRAM
128Kx8 Autostore nvSRAM With Real-Time Clock
COLUMN DEC
G
E
W
COLUMN I/O
POWER
CONTROL
HSB
STORE/
RECALL
CONTROL
SOFTWARE
DETECT
A15 – A0
A5
A6
A7
A8
A9
A12
A13
A14
A15
A16
Quantum Trap
1024 X 1024
STATIC RAM
ARRAY
1024 X 1024
STORE
RECALL
DQ0
DQ1
DQ2
DQ3
DQ4
DQ5
DQ6
DQ7
A0 A1 A2 A3 A4 A10 A11
VCC
VCAP
RTC
MUX
A16 – A0
X1
X2
INT
VRTCbat
VRTCcap


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