參數(shù)資料
型號: MC68HC05BD5P
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDIP40
封裝: PLASTIC, DIP-40
文件頁數(shù): 54/112頁
文件大?。?/td> 864K
代理商: MC68HC05BD5P
MOTOROLA
6-2
MC68HC05BD3
PULSE WIDTH MODULATION
6
The value of each PWM Data Register is continuously compared with the content of an internal
counter to determine the state of each PWM channel output pin. Double buffering is not used in
this PWM design.
Figure 6-1 8-Bit PWM Output Waveforms
M=$00
32T=16
s
M=$01
M=$0F
M=$1F
T=1 CPU clock period (0.5
s if CPU clock=2MHz)
Pulse inserted at end of PWM cycle
N
PWM cycles where pulses are inserted in a 8-cycle frame
Number of inserted
pulses in a 8-cycle frame
xx1
4
1
x1x
2, 6
2
1xx
1, 3, 5, 7
4
31T
16T
31T
T
M = value set in 5-bit PWM (bit3-bit7)
N = value set in 3-bit BRM (bit0-bit2)
T
depends on setting of N.
TPG
44
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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