UM0097 datasheet(27/229 Pages) STMICROELECTRONICS

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UM0097

Peripheral firmware overview

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Example 3:

This example configures LP_WFI mode with FLASH in PWD mode and MVR disabled,

RCLK = CK_AF,

{

/*Set the MVR disabled and the FLASH in PWD mode during LP_WFI

mode */

PCU_LPModesConfig(DISABLE,DISABLE,DISABLE,ENABLE,LPWFI_CK_AF);

|_CK_AF is selected during LPWFI

|_Enable Low power mode during WFI mode

|_FLASH in powerdown during LPWFI and STOP modes

|_MVREG is disabled during LPWFI and STOP modes

|_PLL1 is disabled automatically when CK_AF is selected */

/* Go into LPWFI mode */

PCU_WFI();

}

PCU_STOP

Example:

This example configures STOP FLASH in PWD mode and MVR disabled.

{

/*Set the MVR disabled and the FLASH in PWD mode during STOP

mode. */

PCU_LPModesConfig(DISABLE,DISABLE,DISABLE,ENABLE,LPWFI_CK_AF);

|_CK_AF is selected during LPWFI

|_Enable Low power mode during WFI mode

|_FLASH in powerdown during LPWFI and STOP modes

|_MVREG is disabled during LPWFI and STOP modes

|_PLL1 is disabled automatically when CK_AF is selected */

/*Go into STOP mode

PCU_STOP()

}

Function Name

PCU_STOP

Function Prototype

void PCU_WFI (void);

Behavior Description

This routine is used to enter STOP mode.

Input Parameter

None

Output Parameter

None

Return Value

None

Required preconditions

PCU_LPModesConfig function should be called to configure the STOP

mode options

Called Functions

None

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