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參數資料
型號: W78LE365
廠商: WINBOND ELECTRONICS CORP
元件分類: 8位微控制器
英文描述: 8-BIT MICROCONTROLLER
中文描述: 8位微控制器
文件頁數: 15/40頁
文件大小: 1235K
代理商: W78LE365
W78LE365
This gives a repetition frequency range of 123 Hz to 31.4 KHz (
registers with either 00H or FFH, the PWM channels will output a constant HIGH or LOW level,
respectively. Since the 8-bit counter counts modulo 255, it can never actually reach the value of the
PWM registers when they are loaded with FFH.
= 16 MHz). By loading the PWM
osc
f
When a compare register (PWM0, PWM1, PWM2, PWM3, PWM4) is loaded with a new value, the
associated output updated immediately. It does not have to wait until the end of the current counter
period. There is weakly pulled high on PWM output.
f
1/2
osc
Prescaler
PWMP
8bit counter
PWM0
comparator
PWM1
comparator
PWM1
PWM1OE
PWM0OE
PWM0
8bit counter
PWM2
comparator
PWM3
comparator
PWM3
PWM3OE
PWM2OE
PWM2
(P1.5)
ENPWM0/1/2/3/4
8bit counter
PWM4
comparator
PWM4
(P1.7)
PWM4OE
FIGURE 1 PWM DIAGRAM
Please refer as below code.
mov pwmcon1, #00110011b ; enable pwm3, 2, 1, 0
mov pwmcon2, #00000101b ; enable pwm4
mov pwmp, #40h ; Fpwm = XT/(2*(1+pwmp)*255)
jb p1.3, $
mov pwm0, #14h ; duty cycle high/low = pwm0/(255-pmw0)
jb p1.4, $
mov pwm1, #18h
jb p1.5, $
Publication Release Date: August 5, 2004
- 15 -
Revision A2
相關PDF資料
PDF描述
W78LE516 8-BIT MICROCONTROLLER
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