ASM1232LP, ASM1232LPS

http://onsemi.com

6

Application Information

Manual Reset Operation

Push−button switch input, PBRST, allows the user to

override the internal trip point detection circuits and issue

reset signals. The pushbutton input is debounced and is

pulled HIGH through an internal 40 k

W resistor.

both resets become active and remain active for a minimum

time period of 250 ms after PBRST returns HIGH.

The debounced input is guaranteed to recognize pulses

greater than 20 ms. No external pull−up resistor is required,

since PBRST is pulled HIGH by an internal 40 k

W resistor.

The PBRST can be driven from a TTL or CMOS logic line

or shorted to ground with a mechanical switch.

Figure 5. Timing Diagram: Pushbutton Reset

Figure 6. Application Circuit: Pushbutton Reset