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參數資料
型號: W79E648
廠商: WINBOND ELECTRONICS CORP
英文描述: Fast 8051 Compatible microcontroller with a redesigned Processor
中文描述: 快速8051兼容微控制器重新設計的處理器
文件頁數: 46/80頁
文件大小: 407K
代理商: W79E648
Preliminary W79E648
- 46 -
f
1/2
osc
Prescaler
PWMP
8bit counter
PWM0
comparator
PWM1
comparator
PWM1
(P1.1)
PWM1OE
PWM0OE
PWM0
(P1.0)
8bit counter
PWM2
comparator
PWM3
comparator
PWM3
(P1.3)
PWM3OE
PWM2OE
PWM2
(P1.2)
ENPWM0/1/2/3/4
8bit counter
PWM4
comparator
PWM5
comparator
PWM5
(P1.5)
PWM5OE
PWM4OE
PWM4
(P1.4)
FIGURE 1 PWM DIAGRAM
Please refer as below code.
mov pwmcon1, #00110011b
mov pwmcon2, #00000101b
mov pwmp, #40h
mov pwm0, #14h
mov pwm1, #18h
mov pwm2, #20h
mov pwm3, #b0h
mov pwm4, #40h
mov pwmcon1, #11111111b
; enable pwm3, 2, 1, 0
; enable pwm4
; Fpwm = XT/(2*(1+pwmp)*255)
; duty cycle high/low = pwm0/(255-pmw0)
; output enable pwm3, 2, 1, 0
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