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參數(shù)資料
| 型號： | STK17T88-R25I |
| 元件分類： | 時鐘/數(shù)據(jù)恢復(fù)及定時提取 |
| 英文描述： | REAL TIME CLOCK, PDSO48 |
| 封裝： | 0.300 INCH, 0.025 INCH PITCH, PLASTIC, SSOP-48 |
| 文件頁數(shù)： | 1/27頁 |
| 文件大小： | 287K |
| 代理商： | STK17T88-R25I |
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December 2005
Document Control #ML0024 rev 1.4
1
STK17T88
nvTime
TM Event Data Recorder
32K x 8 AutoStore
TM nvSRAM
With Real-Time Clock
FEATURES
Data Integrity of Simtek nvSRAM Combined
with Full-Featured Real-Time Clock
o
Low Power, 300 nA Max, RTC current
o
Capacitor or battery backup for RTC
Watchdog Timer
Clock Alarm with programmable Interrupts
25ns and 45ns Access Times
“Hands-off” Automatic STORE on Power Down
with only a small capacitor
STORE to QuantumTrap Initiated by
Software , device pin, or on Power Down
RECALL to SRAM Initiated by Software or
Power Up
Unlimited READ, WRITE and RECALL Cycles
High-reliability
o
Endurance to 500K STORE Cycles
o
Data Retention to 20 Years
10mA Typical I
CC at 200ns Cycle Time
Single 3V +20%, -10% Operation
SSOP Package, (ROHS compliant)
DESCRIPTION
The Simtek STK17T88 combines a 256 Kbit
nonvolatile static RAM with a full-featured real-time
clock in a reliable, monolithic integrated circuit. The
embedded
nonvolatile
elements
incorporate
Simtek’s QuantumTrap technology producing the
world’s most reliable nonvolatile memory. The
SRAM can be read and written an unlimited number
of times, while independent, nonvolatile data resides
in the nonvolatile 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
RO
W
D
E
CO
D
E
R
IN
P
U
T
B
U
FFERS
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
Figure 1. Block Diagram
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| STK17T88-R45 | REAL TIME CLOCK, PDSO48 |
| STK17T88-RF45TR | 1 TIMER(S), PROGRAMMABLE TIMER, PDSO48 |
| STK17T88-RF25 | 1 TIMER(S), PROGRAMMABLE TIMER, PDSO48 |
| STK17T88-WF35 | REAL TIME CLOCK, PDIP40 |
| STK17T88-W25I | REAL TIME CLOCK, PDIP40 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| STK17T88-RF25 | 功能描述:NVRAM 32Kbx8+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 |
| STK17T88-RF25I | 功能描述:NVRAM 32Kbx8+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 |
| STK17T88-RF25ITR | 功能描述:NVRAM 32Kbx8+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 |
| STK17T88-RF25TR | 功能描述:NVRAM 32Kbx8+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 |
| STK17T88-RF45 | 功能描述:NVRAM 32Kbx8+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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