參數(shù)資料
型號: MC68331CFC20B1
廠商: MOTOROLA INC
元件分類: 微控制器/微處理器
英文描述: 32-BIT, 20 MHz, MICROCONTROLLER, PQFP132
封裝: 0.950 X 0.950 INCH, 0.025 INCH PITCH, PLASTIC, QFP-132
文件頁數(shù): 72/90頁
文件大?。?/td> 481K
代理商: MC68331CFC20B1
MOTOROLA
MC68331
74
MC68331TS/D
Figure 18 PWM Unit Block Diagram
6.3 Pulse-Width Modulator
The pulse-width modulation submodule has two output pins. The outputs are periodic waveforms con-
trolled 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 prescaler (the same
prescaler used by the capture/compare unit) or by the clock input pin, PCLK.
16/32 PWM BLOCK BLOCK
ZERO DETECTOR
16-BIT COUNTER
PWMA REGISTER
PWMB REGISTER
PWMABUF REGISTER
PWMBBUF REGISTER
"A" COMPARATOR
"B" COMPARATOR
"A" MULTIPLEXER
"B" MULTIPLEXER
SFB
BIT
SFA
BIT
F1A
BIT
F1B
BIT
LATCH
R
S
LATCH
R
S
ZERO DETECTOR
PWMB
PIN
PWMA
PIN
FROM
PRESCALER CLOCK
[14:0]
16-BIT DATA BUS
8-BIT
相關(guān)PDF資料
PDF描述
MC68331CPV20B1 32-BIT, 20 MHz, MICROCONTROLLER, PQFP144
MC68331CFC25B1 32-BIT, 25 MHz, MICROCONTROLLER, PQFP132
MC68331CPV16B1 32-BIT, 16 MHz, MICROCONTROLLER, PQFP144
MC68331CPV20 32-BIT, 20.97 MHz, MICROCONTROLLER, PQFP144
MC68331CFC25 32-BIT, MICROCONTROLLER, PQFP132
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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