參數(shù)資料
型號： STK17T88-RF45
元件分類： 時(shí)鐘/數(shù)據(jù)恢復(fù)及定時(shí)提取
英文描述： PROGRAMMABLE TIMER, PDSO48
封裝： 0.300 INCH, ROHS COMPLIANT, PLASTIC, SSOP-48
文件頁數(shù)： 1/29頁
文件大小： 535K
代理商： STK17T88-RF45
STK17T88
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 #ML0024 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 Soft-
ware 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 STK17T88 combines a 256Kb non-vola-
tile static RAM (nvSRAM) with a full-featured real-
time clock in a reliable, monolithic integrated circuit.
The 256Kbit 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.
32K x 8 AutoStore nvSRAM with Real-Time Clock
ROW
D
E
CO
D
E
R
INPUT
BUFF
ERS
COLUMN DEC
G
E
W
COLUMN I/O
POWER
CONTROL
HSB
STORE/
RECALL
CONTROL
SOFTWARE
DETECT
A13 – A0
STORE
RECALL
DQ0
DQ1
DQ2
DQ3
DQ4
DQ5
DQ6
DQ7
VCC
VCAP
RTC
MUX
A14 – A0
X1
X2
INT
VRTCbat
VRTCcap
A5
A6
A7
A8
A9
A11
A12
A13
A14
A0 A1 A2 A3 A4 A10
Quantum Trap
512 X 512
STATIC RAM
ARRAY
512 X 512
BLOCK DIAGRAM
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STK17TA8-RF25I 功能描述:NVRAM 128Kbx8+RTC 2.7-3.6V RoHS:否 制造商:Maxim Integrated 數(shù)據(jù)總線寬度:8 bit 存儲容量:1024 Kbit 組織:128 K x 8 接口類型:Parallel 訪問時(shí)間:70 ns 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 工作電流:85 mA 最大工作溫度:+ 70 C 最小工作溫度:0 C 封裝 / 箱體:EDIP 封裝:Tube
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