APM32F003F6P6-R datasheet(16/56 Pages) GEEHY

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integrated inside the product. The two circuits are always in working state,

ensuring the normal operation of the system when the power supply exceeds

2V. When the power supply voltage is monitored to be lower than the specified

threshold value VPOR/PDR, the system keeps the reset state without an external

reset circuit.

See 8. Electrical Characteristics for details of VPOR/PDR.

Low power consumption mode

The product supports three low power consumption modes: Wait mode, Halt

mode and Active Halt mode, which can be switched between these modes by

setting, as shown in the following table:

Table 6 Low power consumption mode

Mode type

description

Wait mode

‒

In the wait mode, the contents of all registers and RAM remain

unchanged, and the previously defined clock (master clock state

‒

When an internal or external interrupt request is generated, the CPU

wakes up from the wait mode and resumes working.

Halt mode

‒

In halt mode, the contents of all registers and RAM remain

unchanged, and the configuration of clock (master clock status

‒

In this mode, in order to save power consumption, the main voltage

regulator is turned off, and only the low voltage regulator (and

power-down reset) is in working state.

‒

HIRC starts up faster than HXT (see electrical characteristic

parameters in data manual). Therefore, in order to reduce the wake-

up time of MCU, it is recommended to select HIRC as the clock

source of fMASTER before entering pause mode.

Active halt mode

(Active halt) mode

‒

Active halt mode is similar to halt mode, but it does not require

external interrupt wake-up. It uses WUPT to generate an internal

wake-up event after a certain delay, and the delayed time can be

programmed by the user.

‒

In default status, the main voltage regulator is active and can wake

up quickly from active halt mode, but its current consumption cannot

be ignored.

‒

In active halt mode, fast wake-up can reduce the response time of

CPU and make the switching time between MCU running state and

low power consumption mode shortest.

General purpose input/output port (GPIO)

16 GPIO pins are embedded, which can switch between input (pull-up, floating),

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