ASM1232LPS Alliance Semiconductor, ASM1232LPS Datasheet - Page 2

• Manufacturer Part Number: ASM1232LPS
• Description: 5V uP Power Supply Monitor and Reset Circuit
• Manufacturer: Alliance Semiconductor

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