CIRCUIT UNIT AND MONITORING METHOD OF MICROCONTROLLER BASED ON WATCHDOG VOLTAGE Russian patent published in 2019 - IPC G06F11/07 

FIELD: physics.

SUBSTANCE: invention relates to control and control systems, in particular to digital watchdog circuits for control of microcontroller. Circuit unit for controlling the timing characteristic of the microcontroller comprises a microcontroller (mcC) configured to control at least two sections (T1, C1, R1, R3, D1; T1, T2, C1, C2, R1, R2, R3, D1) of forming watchdog voltage for the time-defined formation of at least two control voltages (Uc; U1, U2) and with possibility of recording and reading formed control voltages (Uc; U1, U2) at the specified moment of reading, and at least two sections (T1, C1, R1, R3, D1; T1, T2, C1, C2, R1, R2, R3, D1) to generate watchdog voltage. Each section of watchdog voltage generation is configured to generate a control voltage (Uc; U1, U2), recorded at a given moment of reading by reading by counting said microprocessor, wherein control voltage (Uc; U1, U2), which is detected at the specified moment of reading and lies within the specified field of voltage tolerances, indicates a good condition of the microcontroller (mcC), and control voltage (Uc; U1, U2), which is detected at the specified moment of reading and lies outside the preset voltage tolerances field, indicates the microcontroller failure condition (mcC). At that, the first and the second sections of guard watch formation form a multichannel watch circuit assembly. Disclosed also is a monitoring method of the microcontroller based on the watchdog voltage to control the timing characteristic of the microcontroller, wherein said watchdog voltage is generated in the disclosed watchdog circuit assembly.

EFFECT: technical result consists in providing simple and effective monitoring of the microcontroller time characteristic, which enables to check for correct functioning and, if possible, simultaneously check the microcontroller for correct internal timing.

15 cl, 4 dwg