IMP1232 IMP Inc, IMP1232 Datasheet - Page 2

• Manufacturer Part Number: IMP1232
• Description: 5V P Power Suppl er Supply Monit y Monitor and or and Reset Cir eset Circuit
• Manufacturer: IMP Inc

2
I
I
I
I
I
I
I
I
M
M
M
M
M
M
M
M
Pin Configuration
Pin Descriptions
Ordering Information
P
P
P
P
P
P
P
P
1
1
1
1
1
1
1
1
2
2
2
2
2
2
2
2
3
3
3
3
3
3
3
3
2
2
2
2
2
2
2
2
—
L
L
L
L
L
L
L
L
1
2
3
4
5
6
7
8
P
P
P
P
P
P
P
P
S
S
C
E
N
S
S
2 -
M
M
N
N
PBRST
2 -
A
A
GND
TOL
TD
1
2
3
4
IMP1232LPCMA
IMP1232LPEMA
IMP1232LPS-2
1, 3, 5, 7, 10,
IMP1232LP
12, 14, 16
11
13
15
2
4
6
8
9
- 8
- 8
M
M
1
1
- 8
- 8
8
8
6
6
c i
c i
S -
S -
D
D
S -
S -
o r
o r
P I
P I
O
O
8
7 ST
6 RESET
5
O
O
S
S
O
O
V
RESET
CC
1232_01.eps
PBRST
RESET
RESET
GND
TOL
V
NC
TD
ST
CC
408-432-9100/www.impweb.com
–
–
–
–
4
4
4
4
0 C
0 C
0 C
0 C
°
°
°
°
0
0
0
0
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
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
°
°
°
°
C
C
C
C
o t
o t
o t
o t
o t
o t
o t
o t
7
7
7
7
CC
0
0
0
0
8
8
8
8
°
°
°
°
5
5
5
5
falls below the reset voltage trip point.
C
C
C
C
°
°
°
°
C
C
C
C
TD
PBRST
=1200ms for TD = V
GND
TOL
NC
NC
NC
NC
TD
1
2
3
4
5
6
7
8
3
3
3
3
3
3
3
3
0
0
0
0
0
0
0
0
TD
IMP1232LPSN
= 150ms for TD = GND, t
IMP1
IMP1
CC
)
232LP/LPS
232LP/LPS
16
15 V
14 NC
13 ST
12 NC
10 NC
11 RESET
9 RESET
1232_02.eps
NC
CC
5
5
5
5
5
5
5
5
©
V
V
V
V
V
V
V
V
TD
1999 IMP, Inc.
= 610ms
CC
1
2
) trip
3
2
_
0 t
1
e .
p
s