Microcontroller and control method therefor

摘要

A microcontroller includes a first voltage detector that detects whether a power supply voltage is equal to or lower than a first voltage value to generate a first signal, a second voltage detector that detects whether the power supply voltage is equal to or lower than a second voltage value to generate a second signal, the second voltage value being lower than the first voltage value, a real-time clock that includes a memory and a clock counter responsive to a clock signal, and a Central Processing Unit (CPU) that receives the first signal. The first voltage detector, the second voltage detector, the real-time clock and the CPU are formed on a single chip. The clock counter receives the second signal. The memory stores a first value according to a second signal, and stores a second value according to a setup of time information to the clock counter.

主权项

1. A microcontroller, comprising:
a first voltage detector that detects whether a power supply voltage is equal to or lower than a first voltage value to generate a first signal; a second voltage detector that detects whether the power supply voltage is equal to or lower than a second voltage value to generate a second signal, the second voltage value being lower than the first voltage value; a real-time clock that includes a memory and a clock counter responsive to a clock signal; and a Central Processing Unit (CPU) that receives the first signal, wherein the first voltage detector, the second voltage detector, the real-time clock and the CPU are formed on a single chip, wherein the clock counter receives the second signal, and wherein the memory stores a first value according to a second signal, and stores a second value according to a setup of time information to the clock counter.