参数资料
型号: M38503E4-XXXFP
元件分类: 微控制器/微处理器
英文描述: 8-BIT, OTPROM, 4 MHz, MICROCONTROLLER, PDSO42
封装: 0.450 INCH, 0.80 MM, PLASTIC, SSOP-42
文件页数: 18/55页
文件大小: 867K
代理商: M38503E4-XXXFP
22
3850 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
MITSUBISHI MICROCOMPUTERS
Fig. 22 Structure of PWM control register
Fig. 23 PWM output timing when PWM register or PWM prescaler is changed
PWM control register
(PWMCON : address 001D16)
PWM function enable bit
Count source selection bit
Not used (return “0” when read)
b7
b0
0: PWM disabled
1: PWM enabled
0: f(XIN)
1: f(XIN)/2
AB
C
B
T
C
T2
=
PWM output
PWM register
write signal
PWM prescaler
write signal
(Changes “H” term from “A” to “B”.)
(Changes PWM period from “T” to “T2”.)
When the contents of the PWM register or PWM prescaler have changed, the PWM
output will change from the next period after the change.
T
T2
sNote
The PWM starts after the PWM enable bit is set to enable and "L" level is output from the PWM pin.
The length of this "L" level output is as follows:
sec
(Count source selection bit = 0, where n is the value set in the prescaler)
sec
(Count source selection bit = 1, where n is the value set in the prescaler)
n+1
2 f(XIN)
n+1
f(XIN)
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