MCP130T-270I-TT Microcontroller Supervisory Circuit with Open Drain Output

FEATURES

Holds microcontroller in reset until supply voltage reaches stable operating level

Resets microcontroller during power loss

Precision monitoring of 3V, 3.3V and 5V systems

7 voltage trip points available

Active low RESET pin

Open drain output

Internal pull-up resistor (5 kΩ) for MCP130

Holds RESET for 350 ms (typical)

RESET to VCC = 1.0V

Accuracy of ±125 mV for 5V systems and ±75 mV for 3V systems over temperature

45 µA typical operating current

Temperature range: - Industrial (I): -40°C to +85°C

DESCRIPTION

The Microchip Technology Inc. MCP120/130 is a voltage supervisory device designed to keep a microcontroller in reset until the system voltage has reached the proper level and stabilized. It also operates as protection from brown-out conditions when the supply voltage drops below a safe operating level. Both devices are available with a choice of seven different trip voltages and both have open drain outputs. The MCP130 has an internal 5 kΩ pullup resistor. Both devices have active low RESET pins. The MCP120/130 will assert the RESET signal whenever the voltage on the VDD pin is below the trip-point voltage.

Maximum Ratings

VDD........................................................................7.0V

All inputs and outputs w.r.t.

VSS .....-0.6V to VDD +1.0V

Storage temperature ..........................-65°C to +150°C

Ambient temp. with power applied .....-65°C to +125°C

ESD protection on all pins ..................................... ≥ 2 kV

DC AND AC CHARACTERISTICS

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