Rainbow-electronics MAX6869 Manual de usuario descargar pdf (Pagina 7)

MAX6854–MAX6869

Nanopower µP Supervisory Circuits with

Optional Manual Reset, Watchdog Timer

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MAX6861/MAX6862/MAX6863 Pin Description

MAX6861/

MAX6863

MAX6862

NAME FUNCTION

11CT

Reset Timeout Select Input. Connect CT low to select the D1 reset timeout output

period (see Tables 1 and 4). Connect CT high (normally V

) to select the D3

reset timeout period.

22GND Ground

33MR

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 V

if unused. MR is

internally pulled up to V

through 10kΩ.

4—RESET

Active-Low Open-Drain or Push-Pull Reset Output. RESET transitions from high to

low when V

drops below the selected reset threshold or MR is pulled low.

RESET remains low for the reset timeout period after V

exceeds the device

reset threshold and MR deasserts. Push-pull RESET outputs are referenced to

. Open-drain RESET outputs require an external pullup resistor.

55V

Supply Voltage. Input for V

reset monitor. For noisy systems, bypass V

with

a 0.1µF capacitor to GND.

—4RESET

Active-High Push-Pull Reset Output. RESET transitions from low to high when

drops below the selected reset threshold or MR is pulled low. RESET

remains high for the reset timeout period after V

exceeds the device reset

threshold and MR deasserts. RESET is referenced to V

1 2 3 4 5 6 7 8 9 10 11 12 ... 16 17

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Rainbow-electronics MAX6869 Manual de usuario Pagina 7