AN2476 datasheet(30/49 Pages) STMICROELECTRONICS

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STR750 library low power mode functions

AN2476

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MRCC_WFIParam

To select the WFI mode control parameters, use one of the following values:

Note:

These two parameters can be used together.

Example:

/* Enter WFI mode with DMA enabled */

MRCC_EnterWFIMode(MRCC_WFIParam_DMAEnabled);

2.6

MRCC_EnterSTOPMode

MRCC_STOPParam

To select the STOP mode control parameters, use one of the following values:

Note:

These two parameters can be used together.

If this parameter is selected, OSC4M and FLASH are also disabled.

Example:

/* Enter STOP mode with OSC4M and FLASH OFF */

MRCC_EnterSTOPMode(MRCC_STOPParam_FLASHOff | MRCC_STOPParam_OSC4MOff);

MRCC_WFIParam

Meaning

MRCC_WFIParam_Default

DMA disabled and FLASH enabled in WFI mode

MRCC_WFIParam_DMAEnabled1)

Enable DMA in WFI mode

MRCC_WFIParam_FLASHOff1)

Disable FLASH in WFI mode

Function Name

MRCC_EnterSTOPMode

Function Prototype

void MRCC_EnterSTOPMode(u32 MRCC_STOPParam)

Behavior Description

Enters STOP mode.

Input Parameter

MRCC_STOPParam: specifies the STOP mode control parameters.

Refer to section “MRCC_STOPParam” for more details on the allowed

values of this parameter.

Output Parameter

None

Return Parameter

None

Required preconditions

None

Called functions

None

MRCC_STOPParam

Meaning

MRCC_STOPParam_Default

OSC4M, FLASH and MVREG enabled in STOP mode

MRCC_STOPParam_OSC4MOff1)

Disable OSC4M and PLL in STOP mode

MRCC_STOPParam_FLASHOff1)

Disable FLASH in STOP mode

MRCC_STOPParam_MVREGOff2)

Disable main voltage regulator in STOP mode

AN2476 Datasheet(PDF) 30 Page - STMicroelectronics

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