MAX6862UK225(2004) Ver la hoja de datos (PDF) - Maxim Integrated
Número de pieza
componentes Descripción
Fabricante
MAX6862UK225
(Rev.:2004)
(Rev.:2004)
Maxim Integrated
MAX6862UK225 Datasheet PDF : 17 Pages
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Nanopower µP Supervisory Circuits with
Manual Reset and Watchdog Timer
PIN
MAX6867/
MAX6869
MAX6868
1
1
2
2
3
3
4
—
5
5
—
4
MAX6867/MAX6868/MAX6869 Pin Description
NAME
FUNCTION
WDI
GND
MR
RESET
VCC
RESET
Watchdog Input. If WDI remains high or low for longer than the watchdog timeout
period, the internal watchdog timer expires, and a reset is triggered for the reset
timeout period. The internal watchdog timer clears whenever reset is asserted,
the manual reset is asserted, or WDI sees a rising or falling edge.
Ground
Active-Low Manual Reset Input. Drive MR low to initiate a reset. The reset output
remains asserted while MR is held low and for the reset timeout period after MR
transitions high. Leave MR unconnected or connect to VCC if unused. MR is
internally pulled up to VCC through 10kΩ.
Active-Low Open-Drain or Push-Pull Reset Output. RESET transitions from high to
low when VCC drops below the selected reset threshold, MR is pulled low, or the
watchdog timer expires. RESET remains low for the reset timeout period after
VCC exceeds the device reset threshold, MR deasserts, or after the watchdog
timer expires. Push-pull RESET outputs are referenced to VCC. Open-drain
RESET outputs require an external pullup resistor.
Supply Voltage. Input for VCC reset monitor. For noisy systems, bypass VCC with
a 0.1µF capacitor to GND.
Active-High Push-Pull Reset Output. RESET transitions from low to high when
VCC drops below the selected reset threshold, MR is pulled low, or the watchdog
timer expires. RESET remains high for the reset timeout period after VCC
exceeds the device reset threshold, MR deasserts, or after the watchdog timer
expires. RESET is referenced to VCC.
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