ADM1232
Rev. C | Page 5 of 12
PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS
NC
1
PB RESET
2
NC
3
TD
4
NC
16
V
CC
15
NC
14
STROBE
13
NC
5
NC
12
TOLERANCE
6
RESET
11
NC
7
NC
10
GND
8
RESET
9
NC = NO CONNECT
ADM1232
TOP VIEW
(Not to Scale)
07522-003
ADM1232
TOP VIEW
(Not to Scale)
Figure 3. RW-16 Pin Configuration
PB RESET
1
V
CC
8
TD
2
STROBE
7
TOLERANCE
3
RESET
6
GND
4
RESET
5
07522-004
Figure 4. RM-8 Pin Configuration
PB RESET
1
TD
2
TOLERANCE
3
GND
4
V
CC
8
STROBE
7
RESET
6
ADM1232
TOP VIEW
(Not to Scale)
RESET
5
07522-005
Figure 5. N-8 and R-8 Pin Configuration
Table 4. Pin Function Descriptions
Pin No.
Mnemonic Description
RW-16
N-8, R-8,
RM-8
1, 3, 5, 7,
10, 12,
14, 16
NC No Connection.
2 1
PB RESET
Push-Button Reset Input. This debounced input ignores pulses of less than 1 ms and is
guaranteed to respond to pulses greater than 20 ms.
4 2 TD
Time Delay Set. This input allows the user to select the maximum amount of time that the
ADM1232 allows the STROBE
input to remain inactive—that is, STROBE is not receiving any
high-to-low transitions—without forcing the ADM1232 to generate a RESET pulse.
See the section, , and the Specifications Figure 8 STROBE
Timeout Selection section.
6 3 TOLERANCE
Tolerance Input. This input determines how much the supply voltage is allowed to decrease (as a
percentage) before a RESET is asserted. Connect this pin to V
CC
for 10% and to GND for 5%.
8 4 GND 0 V Ground Reference for All Signals.
9 5 RESET
Active High Logic Output. This pin is asserted when any of the following events occurs:
V
CC
decreases below the amount specified by the TOLERANCE input; when PB RESET is forced low;
if there are no high-to-low transitions within the limits set by TD at STROBE; and during power-up.
11 6
RESET
Inverse of RESET. This pin has an open-drain output.
13 7
STROBE
The STROBE input is used to monitor the activity of a microprocessor. If there are no high-to-low
transitions within the time specified by TD, a reset is asserted.
15 8 V
CC
Power Supply Input, 5 V.