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TC1271AMVCT View Datasheet(PDF) - Microchip Technology

Part NameTC1271AMVCT Microchip
Microchip Technology Microchip
DescriptionVoltage Supervisor with Manual Reset Input
TC1271AMVCT Datasheet PDF : 40 Pages
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TC1270A/70AN/71A
3.0 PIN DESCRIPTIONS
The descriptions of the pins are listed in Table 3-1.
TABLE 3-1: PINOUT DESCRIPTION
Pin Number
TC1270A TC1270AN TC1271A
(Push-Pull, (Open-Drain, (Push-Pull,
active low) active low) active high)
Sym
Pin
Standard Function
Buffer
Type /
Driver
5
1
4
2
5
1
VSS — Power Ground
— — RST O Push- Reset output (Push Pull), active low
Pull H = VDD > VTRIP, Reset pin is inactive
(after Reset Timer Delay completes)
L = VDD < VTRIP, Reset pin is active
Goes active (Low) if one of these conditions
occurs:
1. If VDD falls below the selected Reset
voltage threshold.
2. If the MR pin is forced low.
3. During power-up.
——
4
— — RST O Open- Reset output (Open-Drain), active low
Drain Float = VDD > VTRIP, Reset pin is inactive
(after Reset Timer Delay completes)
L = VDD < VTRIP, Reset pin is active
——
Goes active (Low) if one of these conditions
occurs:
1. If VDD falls below the selected Reset
voltage threshold.
2. If the MR pin is forced low.
3. During power-up.
4
2 RST O Push- Reset output (Push Pull), active high
Pull H = VDD < VTRIP, Reset pin is active
L = VDD > VTRIP, Reset pin is inactive
(after Reset Timer Delay completes)
Note 1:
Goes active (High) if one of these conditions
occurs:
1. If VDD falls below the selected Reset
voltage threshold.
2. If the MR pin is forced low.
3. During power-up.
The MR pin has an internal weak pull-up (18.5 kΩ typical).
DS22035B-page 14
© 2007 Microchip Technology Inc.
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