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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
TABLE 3-1: PINOUT DESCRIPTION (CONTINUED)
Pin Number
TC1270A TC1270AN TC1271A
(Push-Pull, (Open-Drain, (Push-Pull,
active low) active low) active high)
Sym
Pin
Standard Function
Buffer
Type /
Driver
3
3
3
3
MR
I ST (1) Manual Reset input pin
This input allows a push button switch to be
directly connected to the
TC1270A/70AN/71A’s MR pin, which can then
be used to force a system Reset. The input fil-
ter (ignores) noise pulses that occur on the
MR pin.
H = Switch is open (internal pull-up resistor
pulls signal high). State of the RST/RST
pin determined by other system condi-
tions.
L = Switch is depressed (shorted to ground).
This forces the RST/RST pin Active.
2
4
2
4 VDD — Power Supply Voltage
1—
1 — NC — — No Connection
Note 1: The MR pin has an internal weak pull-up (18.5 kΩ typical).
© 2007 Microchip Technology Inc.
DS22035B-page 15
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General Description
For many of today’s microcontroller applications, care must be taken to prevent low-power conditions that can
cause many different system problems. The most common causes are brown-out conditions, where the system supply drops below the operating level momentarily. The second most common cause is when a slowly decaying power supply causes the microcontroller to begin executing instructions without sufficient voltage to sustain volatile memory (RAM), thus producing indeterminate results.

Features:
• Precision voltage monitor
- 2.63V, 2.93V, 3.08V, 4.38V and 4.63V trip points (Typical)
• Manual Reset input
• Reset Time-out Delay:
- Standard: 280 ms (Typical)
- Optional: 2.19 ms, and 35 ms (Typical)
• Power Consumption ≤15 µA max
• No glitches on outputs during power-up
• Active Low Output Options:
- Push-Pull Output and Open-Drain Output
• Active High Output Option:
- Push-Pull Output
• Replacement for (Specification compatible with):
- TC1270, TC1271
- TCM811, TCM812
• Fully static design
• Low voltage operation (1.0V)
• ESD protection:
- ≥4 kV Human Body Model (HBM)
- ≥400V Machine Model (MM)
• Extended (E) Temperature range:
-40°C to +125°C
• Package Options:
- 4-lead SOT-143
- 5-lead SOT-23
- Pb-free Device

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