STC micro STC8A8K64D4 Series - Wake up MCU from Power Saving Mode Using Rxd;Rxd2;Rxd3;Rxd4 Pin Interrupts

STC8A8K64D4 Series Manual
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NOP
LOOP:
CPL P1.1
JMP LOOP
END
6.7.9 Wake up MCU from Power Saving Mode using RxD/RxD2/RxD3/RxD4
pin interrupts
C language code
// Operating frequency for test is 11.0592MHz
#include "reg51.h"
#include "intrins.h"
sfr IE2 = 0xaf;
#define ES2 0x01
#define ES3 0x08
#define ES4 0x10
sfr P_SW1 = 0xa2;
sfr P_SW2 = 0xba;
sbit P11 = P1^1;
sfr P0M1 = 0x93;
sfr P0M0 = 0x94;
sfr P1M1 = 0x91;
sfr P1M0 = 0x92;
sfr P2M1 = 0x95;
sfr P2M0 = 0x96;
sfr P3M1 = 0xb1;
sfr P3M0 = 0xb2;
sfr P4M1 = 0xb3;
sfr P4M0 = 0xb4;
sfr P5M1 = 0xc9;
sfr P5M0 = 0xca;
void UART1_Isr() interrupt 4
{
}
void UART2_Isr() interrupt 8
{
}
void UART3_Isr() interrupt 17
{
}
void UART4_Isr() interrupt 18
{
}
void main()
{