参数资料
型号: MC9328MXLDVP20
厂商: Freescale Semiconductor
文件页数: 64/90页
文件大小: 0K
描述: IC MCU I.MX 200MHZ 225-MAPBGA
标准包装: 160
系列: i.MXL
核心处理器: ARM9
芯体尺寸: 32-位
速度: 200MHz
连通性: EBI/EMI,I²C,MMC/SD,SPI,SSI,UART/USART,USB
外围设备: DMA,I²S,LCD,POR,PWM,WDT
输入/输出数: 97
程序存储器类型: ROMless
电压 - 电源 (Vcc/Vdd): 1.7 V ~ 3.3 V
振荡器型: 外部
工作温度: -30°C ~ 70°C
封装/外壳: 225-LFBGA
包装: 托盘
Functional Description and Application Information
MC9328MXL Technical Data, Rev. 8
Freescale Semiconductor
67
4.9
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. Its timing diagram is shown in
Figure 51 and the parameters are listed in Table 26.
Figure 51. PWM Output Timing Diagram
12
MS_SDIO output delay time1,2
–3
ns
13
MS_SDIO input setup time for MS_SCLKO rising edge (RED bit = 0)3
18
ns
14
MS_SDIO input hold time for MS_SCLKO rising edge (RED bit = 0)3
0–
ns
15
MS_SDIO input setup time for MS_SCLKO falling edge (RED bit = 1)4
23
ns
16
MS_SDIO input hold time for MS_SCLKO falling edge (RED bit = 1)4
0–
ns
1 Loading capacitor condition is less than or equal to 30pF.
2 An external resistor (100 ~ 200 ohm) should be inserted in series to provide current control on the MS_SDIO pin,
because of a possibility of signal conflict between the MS_SDIO pin and Memory Stick SDIO pin when the pin
direction changes.
3 If the MSC2[RED] bit = 0, MSHC samples MS_SDIO input data at MS_SCLKO rising edge.
4 If the MSC2[RED] bit = 1, MSHC samples MS_SDIO input data at MS_SCLKO falling edge.
Table 26. PWM Output Timing Parameter Table
Ref No.
Parameter
1.8 ± 0.1 V
3.0 ± 0.3 V
Unit
Minimum
Maximum
Minimum
Maximum
1
System CLK frequency1
0870
100
MHz
2a
Clock high time1
3.3
5/10
ns
2b
Clock low time1
7.5
5/10
ns
3a
Clock fall time1
–5
5/10
ns
Table 25. MSHC Signal Timing Parameter Table (Continued)
Ref
No.
Parameter
3.0 ± 0.3 V
Unit
Minimum
Maximum
System Clock
2a
1
PWM Output
3b
2b
3a
4b
4a
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