General Description

The MCP102/103/121/131 are voltage supervisor devices designed to keep a microcontroller in reset

until the system voltage has reached and stabilized at the proper level for reliable system operation. Table 1 shows the available features for these devices.

Features

• Ultra low supply current: 1.75 µA(steady-state max.)

• Precision monitoring options of:- 1.90V, 2.32V, 2.63V, 2.93V, 3.08V, 4.38V and 4.63V

• Resets microcontroller in a power-loss event

• RSTpin (Active-low):

- MCP121:Active-low, open-drain

- MCP131:Active-low, open-drain with internal pull-up resistor

- MCP102and MCP103:Active-low, push-pull

• Reset Delay Timer (120 ms delay, typ.)

• Available in SOT23-3, TO-92 and SC-70 packages

• Temperature Range:

- Extended: -40°C to +125°C(except MCP1XX-195)

- Industrial: -40°C to +85°C (MCP1XX-195 only)

• Pb-free devices

Applications

• Critical Microcontroller and Microprocessor Power-monitoring Applications

• Computers

• Intelligent Instruments

• Portable Battery-powered Equipment