參數(shù)資料
型號: MC68HC916X1
廠商: Motorola, Inc.
英文描述: 16-Bit Modular Microcontroller(16位模塊化微控制器)
中文描述: 16位微控制器模塊(16位模塊化微控制器)
文件頁數(shù): 91/172頁
文件大?。?/td> 1035K
代理商: MC68HC916X1
MC68HC916X1
MC68HC916X1TS/D
MOTOROLA
91
Figure 17 Pulse Accumulator Block Diagram
6.4 Pulse-Width Modulator
The pulse-width modulation submodule has two output pins. The outputs are periodic waveforms
controlled by a single frequency whose duty cycles can be independently selected and modified by
user software. Each PWM can be independently programmed to run in fast or slow mode. The PWM
unit has its own 16-bit free-running counter, which is clocked by an output of the nine-stage pres-
caler (the same prescaler used by the capture/compare unit) or by the clock input pin, PCLK.
Figure 18
displays a block diagram of the PWM unit.
EDGE
DETECT
LOGIC
PACNT
8-BIT COUNTER
2:1
MUX
PAI
ENABLE
OVERFLOW
10
INTERRUPT
REQUESTS
11
INTERNAL
DATA BUS
SYNCHRONIZER
&
DIGITAL FILTER
PACTL
TFLG2
TMSK2
MUX
PCLK
TCNT OVERFLOW
CAPTURE/COMPARE CLK
PRESCALER
÷
512
P
P
P
P
P
P
P
P
P
P
P
16/32 PULSE ACC BLOCK
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