STC12LE5616AD datasheet(42/377 Pages) STC

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The following example C program demostrates that power-down mode be woken-up by external interrupt .

/*--------------------------------------------------------------------------------*/

/* --- STC MCU International Limited -----------------------------------*/

/* --- STC 1T Series MCU wake up Power-Down mode Demo ------*/

/* If you want to use the program or the program referenced in the */

/* article, please specify in which data and procedures from STC */

/*-------------------------------------------------------------------------------*/

#include <reg51.h>

#include <intrins.h>

sbit

Begin_LED = P1^2;

//Begin-LED indicator indicates system start-up

unsigned char

Is_Power_Down = 0;

//Set this bit before go into Power-down mode

sbit

Is_Power_Down_LED_INT0

= P1^7; //Power-Down wake-up LED indicator on INT0

sbit

Not_Power_Down_LED_INT0

= P1^6; //Not Power-Down wake-up LED indicator on INT0

sbit

Is_Power_Down_LED_INT1

= P1^5; //Power-Down wake-up LED indicator on INT1

sbit

Not_Power_Down_LED_INT1

= P1^4; //Not Power-Down wake-up LED indicator on INT1

sbit

Power_Down_Wakeup_Pin_INT0

= P3^2; //Power-Down wake-up pin on INT0

sbit

Power_Down_Wakeup_Pin_INT1

= P3^3; //Power-Down wake-up pin on INT1

sbit

Normal_Work_Flashing_LED

= P1^3; //Normal work LED indicator

void Normal_Work_Flashing (void);

void INT_System_init (void);

void INT0_Routine (void);

void INT1_Routine (void);

void main (void)

{

unsigned char

j = 0;

unsigned char

wakeup_counter = 0;

//clear interrupt wakeup counter variable wakeup_counter

Begin_LED = 0;

//system start-up LED

INT_System_init ( );

//Interrupt system initialization

while(1)

{

P2 = wakeup_counter;

wakeup_counter++;

for(j=0; j<2; j++)

{

Normal_Work_Flashing( );

//System normal work

}

STC12LE5616AD Datasheet(PDF) 42 Page - STCmicro Technology Co,.Ltd

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