參數(shù)資料
型號: MC9328MX21DVKR2
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 32-BIT, 266 MHz, MICROPROCESSOR, PBGA289
封裝: 14 X 14 MM, 1.41 MM HEIGHT, 0.65 MM PITCH, LEAD FREE, PLASTIC, MAPBGA-289
文件頁數(shù): 42/100頁
文件大小: 1979K
代理商: MC9328MX21DVKR2
MC9328MX21 Technical Data, Rev. 3.4
46
Freescale Semiconductor
Specifications
3.14
Pulse-Width Modulator
The PWM can be programmed to select one of two clock signals as its source frequency. The selected
clock signal is passed through a divider and a prescaler before being input to the counter. The output is
available at the pulse-width modulator output (PWMO) external pin.
Figure 37. PWM Output Timing Diagram
Table 30. PWM Output Timing Parameters
Ref No.
Parameter
1.8 V
± 0.1 V
3.0 V
± 0.3 V
Unit
Minimum
Maximum
Minimum
Maximum
1
System CLK frequency
0
45
0
45
MHz
2a
Clock high time
12.29
12.29
ns
2b
Clock low time
9.91
9.91
ns
3a
Clock fall time
0.5
0.5
ns
3b
Clock
r
ise time
–0.5–0.5
ns
4a
Output delay time
9.37
3.61
ns
4b
Output setup time
8.71
3.03
ns
System Clock
2a
1
PWM Output
3b
2b
3a
4b
4a
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