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Giải thích chi tiết về linh kiện  5V uP Power Supply Monitor and Reset Circuit
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ASM1232LP/LPS
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Notice: The information in this document is subject to change without notice
5V µP Power Supply Monitor and Reset Circuit
January 2005
rev 1.5
Pin Configuration
Pin Description
Pin #
8-Pin Package
Pin #
16-Pin Package
Pin
Name
Function
1
2
PBRST
Debounced manual pushbutton RESET input.
24
TD
Watchdog time delay selection. (tTD = 150ms for TD = GND, tTD = 610ms
for TD=Open, and tTD = 1200ms for TD = VCC).
36
TOL
Selects 5% (TOL connected to GND) or 10% (TOL connected to VCC)
trip point tolerance.
4
8
GND
Ground.
5
9
RESET
Active HIGH reset output. RESET is active:
1. If VCC falls below the reset voltage trip point.
2. If PBRST is LOW.
3. If ST is not strobed LOW before the timeout period set by TD expires.
4. During power-up.
6
11
RESET
Active LOW reset output. (See RESET).
713
ST
Strobe input.
815
VCC
5V power.
-
1,3,5,7,
10,12,14,16
NC
No internal connection.
1
2
3
4
5
6
7
8
PBRST
TD
TOL
GND
VCC
ST
RESET
RESET
1
2
3
4
5
6
7
8
PBRST
TD
TOL
GND
VCC
ST
RESET
RESET
ASM1232LPS
9
10
11
12
13
14
15
16
NC
NC
NC
NC
NC
NC
NC
NC
ASM1232LPU
DIP/SO/MicroSO
SO
ASM1232LP
ASM1232LPS-2



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