SH79F166APSLASH044PR datasheet(92/113 Pages) SINOWEALTH

tên linh kiện	SH79F166AP/044PR

Giải thích chi tiết về linh kiện	Enhanced 8051 Microcontroller with 10bit ADC

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SH79F166A

8.8 Low Voltage Reset (LVR)

8.8.1 Feature

 Enabled by the code option and VLVR is 4.3V or 2.1V

 LVR de-bounce timer TLVR is about 30-60µs

 An internal reset flag indicates low voltage reset generates

The LVR function is used to monitor the supply voltage and generate an internal reset in the device when the supply voltage

below the specified value VLVR. The LVR de-bounce timer TLVR is about 30µs.

The LVR circuit has the following functions when the LVR function is enabled: (t means the time of the supply voltage below

VLVR)

Generates a system reset when VDD ≤ VLVR and t ≥ TLVR;

Cancels the system reset when VDD > VLVR or VDD < VLVR, but t < TLVR.

The LVR function is enabled by the code option.

It is typically used in AC line or large battery supplier applications, where heavy loads may be switched on and cause the MCU

supply-voltage temporarily falls below the minimum specified operating voltage. This feature can protect system from working

under bad power supply environment.

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