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參數(shù)資料
| 型號： | DMC73C168 |
| 英文描述： | 8Bit Single Chip Microcontroller |
| 中文描述： | 8位單芯片微控制器 |
| 文件頁數(shù)： | 63/90頁 |
| 文件大?。?/td> | 742K |
| 代理商： | DMC73C168 |
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63
8Bit Single Chip Microcontroller
DMC73C167
5.8 6-bit PWM (PWM1_0-PWM1_8)
5.8.1 Description of PWM1
The DMC73C167 microcontrollers feature nine PWM output ports.
Each port contains 6-bit resolution.
The ports are provided for the application of analog circuit control when combined
with an external low pass filter circuit. As shown in Figure 5-14, the 6-bit PWM is
composed of a 6-bit timer, two 6-bit latches, and two 6-bit comparators. When
started the 6-bit timer is filled up with 3Fh and increments during every period of
Fosc/16. The 6-bit timer is used for all 6-bit PWMs in common. For any of the nine
PWMs to start, the 6-bit timer must already be started. If the value of the 6-bit timer
is greater than a value of the latched 6-bit data, the comparator output is logic high
status.
Each PWM output port contains its own polarity control bit, which enables the port to
be selected as inverted or non-inverted output. If the PWM function is not required,
the port to be selected as inverted or non-inverted output. If the PWM function is not
required, the port could easily be used as a normal digital output port through polarity
control.
Notes:
PWM1_0-PWM1_8 ports are +12 V open-drain output.
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