參數(shù)資料
型號: MC68331CAG25
廠商: Freescale Semiconductor
文件頁數(shù): 72/84頁
文件大?。?/td> 0K
描述: IC MCU 32BIT 25MHZ 144-LQFP
標準包裝: 60
系列: M683xx
核心處理器: CPU32
芯體尺寸: 32-位
速度: 25MHz
連通性: EBI/EMI,SCI,SPI,UART/USART
外圍設(shè)備: POR,PWM,WDT
輸入/輸出數(shù): 18
程序存儲器類型: ROMless
電壓 - 電源 (Vcc/Vdd): 4.5 V ~ 5.5 V
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 85°C
封裝/外殼: 144-LQFP
包裝: 托盤
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
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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