AME8510 Datasheet, PDF (2/13 Pages) Analog Microelectronics – Micropower uP Watch Dog Timer

AME, Inc.
AME8510 / 8520 / 8530
Micropower µP Watch Dog Timer
n Pin Description
Pin #
Pin Name
AME8510 AME8520 AME8530
Pin Description
This pin may be either RESET or RESETB. RESETB is active
1
1
1
RESET/ low. In the case of the AME8520 and AME8530 this pin will
RESETB always be the opposite polarity from pin 3. This pin can be
push/pull or open drain.
2
2
2
GND Ground
N/A
3
3
N/A
This pin may be either RESETB or RESET. RESET is active
3
RESET/ high. In the case of the AME8520 and AME8530 this pin will
RESETB always be the opposite polarity from pin 1. This pin can be
either push/pull or open drain.
Manual Reset. Active low. Pulling this pin low forces a reset.
After a low to high transition reset remains asserted for exactly
4
MRB
one reset timeout period. This pin is internally pulled high. If
this function is unused then float this pin or tie it to V_DD.
Watch Dog Input. Any transition on this pin will reset the watch
4
4
N/A
WDI
dog timer. If this pin remains high or low for longer than the
watch dog interval then a reset is asserted. Float or tristate this
pin to disable the watch dog feature.
Positive power supply. A reset is asserted after this voltage
5
5
5
V_DD
drops below a predetermined level. After V_DD rises above that
level reset remains asserted until the end of the reset timeout
period.
2