Abstract: This application discloses a voltage monitoring method, a voltage monitoring apparatus, and an electric vehicle. The voltage monitoring apparatus includes a power conversion module and a microcontroller electrically connected to the power conversion module. The power conversion module is configured to output a voltage. The microcontroller includes an ADC module, a monitoring module, and an IO module. The ADC module is configured to obtain an output voltage of the power conversion module, and determine whether the output voltage encounters an exception. The monitoring module is configured to: when the output voltage encounters an exception, output a control signal through the IO module. The power conversion module correspondingly stops outputting a voltage based on the control signal. Based on this, diagnostic coverage of the power conversion module can reach 99% for a single-point fault metric, thereby meeting a requirement of a corresponding level of ASIL D.

Abstract: In an integrated circuit, a first scan chain of flip-flops is loaded with data for testing data retention of the flip-flops and a memory is loaded with data for performing a retention test by a memory built-in self-test (MBIST) wrapper circuit. A portion of the system is placed in a low-power state for a predetermined period of time before data is read from the memory and retention of data by the memory while in the low-power state is determined.

Abstract: In an integrated circuit, a first scan chain of flip-flops is loaded with data for testing data retention of the flip-flops and a memory is loaded with data for performing a retention test by a memory built-in self-test (MBIST) wrapper circuit. A portion of the system is placed in a low-power state for a predetermined period of time before data is read from the memory and retention of data by the memory while in the low-power state is determined.

Abstract: Power control circuitry for a data processor supplies a memory array with a supply voltage corresponding to a memory performance level. The performance levels include a full performance level and a power-saving performance level. Voltage sensing circuitry senses a voltage level of the memory array and outputs a power status signal. The power status signal is used to determine when the memory array is awake and can be accessed.

Abstract: Power control circuitry for a data processor supplies a memory array with a supply voltage corresponding to a memory performance level. The performance levels include a full performance level and a power-saving performance level. Voltage sensing circuitry senses a voltage level of the memory array and outputs a power status signal. The power status signal is used to determine when the memory array is awake and can be accessed.