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參數(shù)資料
| 型號： | S93WD663S-BT |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | Precision Supply-Voltage Monitor and Reset Controller With a Watchdog Timer and 4k-bit Microwire Memory |
| 中文描述： | 精密電源電壓監(jiān)控和復位控制器，看門狗定時器和4K位的微型導線記憶 |
| 文件頁數(shù)： | 11/14頁 |
| 文件大?。?/td> | 147K |
| 代理商： | S93WD663S-BT |
11
S93WD662/S93WD663
2013 2.1 8/2/00
Frequently the reset controller will be deployed on a PC board that provides a peripheral function to a system.
Examples might be modem or network cards in a PC or a PCMCIA card in a laptop. In instances like this the peripheral
card may have a requirement for a clean reset function to insure proper operation. The system may or may not provide
a reset pulse of sufficient duration to clear the peripheral or to protect data stored in a nonvolatile memory.
The I/O capability of the RESET pins can provide a solution. The system
’
s reset signal to the peripheral can be fed
into the S93WD662/WD663 and it in turn can clean up the signal and provide a known entity to the peripheral
’
s circuits.
The figure below shows the basic timing characteristics under the assumption the reset input is shorter in duration
than t
PURST
. The same reset output affect can be attained by using the active high reset input.
When planning your resistor pull-up and pull-down values, use the following chart to help determine min. resistances.
Condition
V
CC
= 1.0V, I
OL
=100μA
V
CC
= 1.2V, I
OL
=100μA
V
CC
= 3.0V, I
OL
=500μA
V
CC
= 3.6V, I
OL
=500μA
V
CC
= 4.5V, I
OL
=750μA
V
CC
= 1.0V, I
OL
=100μA
V
CC
= 1.2V, I
OL
=150μA
V
CC
= 3.0V, I
OL
=750μA
V
CC
= 3.6V, I
OL
=1mA
V
CC
= 4.5V, I
OL
=1mA
V
CC
= 1.0V, I
OH
=400μA
V
CC
= 1.2V, I
OH
=800μA
V
CC
= 3.0V, I
OH
=800μA
V
CC
= 3.6V, I
OH
=800μA
V
CC
= 4.5V, I
OH
=800μA
Min
Typ
Max
0.3
0.3
0.3
0.3
0.3
0.4
0.4
0.4
0.4
0.4
Units
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
CC
-0.75
V
CC
-0.75
V
CC
-0.5
V
CC
-0.5
V
CC
-0.5
Worst Case RESET Sink/Source Capabilities at Various V
CC
Levels
Parameter
Symbol
RESET# Output
Voltage
V
OL
RESET# Output
V
OL
Voltage
RESET Output
Voltage
V
OH
2013 PGM T5 1.0
RESET#
Input
RESET#
Output
RESET
Output
2013 T fig09 2.0
t
PURST
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| S93WD662S-B | Precision Supply-Voltage Monitor and Reset Controller With a Watchdog Timer and 4k-bit Microwire Memory |
| S93WD662S-BT | Precision Supply-Voltage Monitor and Reset Controller With a Watchdog Timer and 4k-bit Microwire Memory |
| S93WD663 | Precision Supply-Voltage Monitor and Reset Controller With a Watchdog Timer and 4k-bit Microwire Memory |
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