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MAX6854 Datasheet(PDF) 6 Page - Maxim Integrated Products

Part No. MAX6854
Description  Nanopower uP Supervisory Circuits with Manual Reset and Watchdog Timer
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Maker  MAXIM [Maxim Integrated Products]
Homepage  http://www.maxim-ic.com
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MAX6854 Datasheet(HTML) 6 Page - Maxim Integrated Products

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Nanopower µP Supervisory Circuits with
Manual Reset and Watchdog Timer
6
_______________________________________________________________________________________
MAX6854/MAX6855/MAX6856 Pin Description
PIN
MAX6854/
MAX6856
MAX6855
NAME
FUNCTION
1—
RESET
Active-Low Open-Drain or Push-Pull Reset Output. RESET transitions from high to
low when VCC drops below the selected reset threshold or MR is pulled low.
RESET remains low for the reset timeout period after VCC exceeds the device
reset threshold and MR deasserts. Push-pull RESET outputs are referenced to
VCC. Open-drain RESET outputs require an external pullup resistor.
2, 4
2, 4
GND
Ground. Connect all GND inputs to the same potential.
33
MR
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.
55
VCC
Supply Voltage. Input for VCC reset monitor. For noisy systems, bypass VCC with
a 0.1µF capacitor to GND.
—1
RESET
Active-High Push-Pull Reset Output. RESET transitions from low to high when
VCC drops below the selected reset threshold or MR is pulled low. RESET
remains high for the reset timeout period after VCC exceeds the device reset
threshold and MR deasserts. RESET is referenced to VCC.
MAX6858/MAX6860 Pin Description
PIN
MAX6858/
MAX6860
NAME
FUNCTION
1, 2
I.C.
Internally Connected. For increased noise immunity, connect I.C. to GND.
3
GND
Ground
4
RESET
Active-Low Open-Drain or Push-Pull Reset Output. RESET transitions from high to low when VCC
drops below the selected reset threshold. RESET remains low for the reset timeout period after
VCC exceeds the device reset threshold. Push-pull RESET outputs are referenced to VCC. Open-
drain RESET outputs require an external pullup resistor.
5VCC
Supply Voltage. Input for VCC reset monitor. For noisy systems, bypass VCC with a 0.1µF
capacitor to GND.


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