STC12LE5616AD datasheet(156/377 Pages) STC

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6.7.4 Programs of P3.5/T1 Interrupt(falling edge) used to wake up PD mode

1. C program

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

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

/* --- STC 1T Series MCU Power-Down wakeup by T1 Demo ----------------------------------------------------*/

/* ---This Interrupt will borrow Timer 1 interrupt request bit TF1 and Timer 1 interrupt vector address ----*/

/* ---So Timer 1 function should be disabled when this Interrupt is enabled -------------------------------------*/

/* ---The enable bit of this Interrupt is T1_PIN_IE / WAKE_CLKO.5 in WAKE_CLKO register -----------*/

/* 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"

sfr

WAKE_CLKO = 0x8f;

//External interrupt0 service routine

void t1int() interrupt 3

//T1 interrupt, interrupt 3 (location at 001BH)

{

}

void main()

{

WAKE_CLKO = 0x20;

//enable P3.5/T1/

P3.5/T1/INT falling edge wakeup MCU

//from power-down mode

//T1_PIN_IE / WAKE_CLKO.5 = 1

//ET1 = 1;

//enable T1 interrupt

EA = 1;

//open global interrupt switch

while (1)

{

T1 = 1;

//ready read T1 port

while (!T1);

//check T1

_nop_();

PCON = 0x02;

//MCU power down

_nop_();

P1++;

}

156

STC12LE5616AD Datasheet(PDF) 156 Page - STCmicro Technology Co,.Ltd

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