Timer 2 (External Count - T2 Is Extended For External Falling Edge Interrupt) - STC micro STC8A8K64D4 Series Reference Manual

STC8A8K64D4 Series Manual
ORG
LJMP
ORG
LJMP
ORG
TM2ISR:
CPL
RETI
MAIN:
MOV
MOV
MOV
MOV
MOV
MOV
MOV
MOV
MOV
MOV
MOV
MOV
MOV
MOV
MOV
MOV
MOV
SETB
JMP
END
13.5.17 Timer 2 (External count – T2 is extended for external falling edge
interrupt)
C language code
//Operating frequency for test is 11.0592MHz
#include "reg51.h"
#include "intrins.h"
sfr T2L =
sfr T2H =
sfr AUXR =
sfr IE2 =
#define ET2
sfr AUXINTIF =
#define T2IF
sfr P0M1 =
0000H
MAIN
0063H
TM2ISR
0100H
P1.0
SP, #5FH
P0M0, #00H
P0M1, #00H
P1M0, #00H
P1M1, #00H
P2M0, #00H
P2M1, #00H
P3M0, #00H
P3M1, #00H
P4M0, #00H
P4M1, #00H
P5M0, #00H
P5M1, #00H
T2L,#66H
T2H,#0FCH
AUXR,#10H
IE2,#ET2
EA
$
0xd7;
0xd6;
0x8e;
0xaf;
0x04
0xef;
0x01
0x93;
;Test port
;65536-11.0592M/12/1000
;Start timer
;Enable timer interrupt
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