em78p372n_pwm2.dt

义隆EM78P372N资料

;**********************************************************************
;PWM2 输出1KHz的方波，占空比50%
;**********************************************************************
;MCU:EM78P372N
;Oscillator:IRC 4MHz
;Clock:2
;WDT: Disable
;编译软件:eUIDE version 1.02.09.07

INCLUDE "EM78P372N.INC"
	ORG	0X00
	JMP	INITIAL  
	ORG	0X50
INITIAL:
	WDTC
	DISI
	BS		S_BANK
	MOV		A,@0X7F
	MOV		SCR,A			;选择4MHz,TIMER 选择主频
	BC		S_BANK
	BC		IOCS
	MOV		A,@0X0
	IOW		P6CR			;设定P67为输出口，初始状态为高电压位       
	BS		S_BANK			;切换到bank 1
	MOV		A,@0B00100000   
	MOV		TMRCON,A
	MOV		A,@0B00000010	;使能PWM1
	MOV		PWMCON,A
	MOV		A,@249			;PWM2周期=1/4*（249+1）*16=1ms
	MOV		PRD2,A
	MOV		A,@125
	MOV		DT2,A
	BS 		T2EN			;定时器1定时开始
	BC		S_BANK			;切换到bank 0
	JMP		$				;无穷循环