参数资料
型号: MC68331CPV16
厂商: Freescale Semiconductor
文件页数: 72/84页
文件大小: 0K
描述: IC MCU 32BIT 16MHZ 144-LQFP
标准包装: 60
系列: M683xx
核心处理器: CPU32
芯体尺寸: 32-位
速度: 16MHz
连通性: EBI/EMI,SCI,SPI,UART/USART
外围设备: POR,PWM,WDT
输入/输出数: 18
程序存储器类型: ROMless
电压 - 电源 (Vcc/Vdd): 4.5 V ~ 5.5 V
振荡器型: 内部
工作温度: -40°C ~ 85°C
封装/外壳: 144-LQFP
包装: 托盘
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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