Datasheet

ADM1232A
Rev. A | Page 5 of 8
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
PB RESET 1
TD 2
TOLERANCE 3
GND
4
V
CC
8
STROBE 7
RESET 6
RESET
5
ADM1232A
TOP VIEW
(Not to Scale)
00061-003
Figure 3. Pin Configuration
Table 3. Pin Function Descriptions
Pin No. Mnemonic Description
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.
2 TD
Time Delay Set. This pin allows the user to select the maximum amount of time the ADM1232A allows the
STROBE input to remain inactive (that is, STROBE is not receiving any high-to-low transitions), without forcing
the ADM1232A to generate a RESET pulse. (See , the strobe timeout settings in , and .) Table 1 Table 4 Figure 6
3 TOLERANCE
Tolerance Input. This input determines how much the supply voltage will be allowed to decrease (as a percentage
tolerance) before a RESET is asserted. Connect to V
CC
for 10% tolerance and GND for 5% tolerance.
4 GND 0 V ground reference for all signals.
5 RESET
Active High Logic Output. This pin is asserted when V
CC
decreases below the amount specified by the
TOLERANCE input, or PB RESET is forced low, or if there are no high-to-low transitions within the limits set by
TD at STROBE
, or during power-up.
6
RESET
Open Drain, Active Low Logic Output. The inverse of RESET.
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.
8 V
CC
Power Supply Input +5 V.