參數(shù)資料
型號(hào): GMS81C7208
廠商: Electronic Theatre Controls, Inc.
英文描述: NET CENTER 48" W
中文描述: 8位單晶片微控制器
文件頁數(shù): 52/93頁
文件大小: 853K
代理商: GMS81C7208
GMS81C1404/GMS81C1408
50
June. 2001 Ver 1.2
Figure 13-11 Example of PWM at 8MHz
Figure 13-12 Example of Changing the Period in Absolute Duty Cycle (@8MHz)
fxin
T1
PWM
POL=1
~
~
01
02
03
04
05
7F
80
81
3FF
02
03
~
~
~
~
~
~
~
PWM
POL=0
Duty Cycle [80H x 125nS = 16uS]
Period Cycle [3FFH x 125nS = 127.875uS, 7.8KHz]
PWM0HR = 0CH
T1PPR = FFH
T1PDR = 80H
T1CK[1:0] = 00 (fxin)
PWM0HR3 PWM0HR2
PWM0HR1 PWM0HR0
T1PPR (8-bit)
T1PDR (8-bit)
Period
Duty
1
1
FFH
0
0
80H
00
01
00
Source
clock
T1
PWM
POL=1
Duty Cycle
[05H x 1uS = 5uS]
Period Cycle [0EH x 1uS = 14uS, 71KHz]
PWM0HR = 00H
T1PPR = 0EH
T1PDR = 05H
T1CK[1:0] = 10 (1uS)
01 02
03
04
05
06
08
09
0B 0C 0D
0E
01 02
03
04
05
06 07
08
09
0A
01 02
03 04
07
0A
05
Duty Cycle
[05H x 1uS = 5uS]
Period Cycle [0AH x 1uS = 10uS, 100KHz]
Duty Cycle
[05H x 1uS = 5uS]
Write T1PPR to 0AH
Period changed
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