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MCIMX503CVM8B 数据表(PDF) 84 Page - Freescale Semiconductor, Inc |
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MCIMX503CVM8B 数据表(HTML) 84 Page - Freescale Semiconductor, Inc |
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84 / 134 page  i.MX50 Applications Processors for Consumer Products, Rev. 2 84 Freescale Semiconductor Electrical Characteristics Figure 45. Read Sequence Timing Diagram 4.9.7 Pulse Width Modulator (PWM) Timing Parameters This section describes the electrical information of the PWM. The PWM can be programmed to select one of three clock signals as its source frequency. The selected clock signal is passed through a prescaler before being input to the counter. The output is available at the pulse-width modulator output (PWMO) external pin. Figure 46 depicts the timing of the PWM, and Table 62 lists the PWM timing parameters. Figure 46. PWM Timing Table 61. WR1 /RD Timing Parameters ID Parameter Symbol Min Typ Max Unit OW7 Write 1 Low Time tLOW1 15 15 µs OW8 Transmission Time Slot tSLOT 60 117 120 µs — Read Data Setup tSU —— 1 µs OW9 Read Low Time tLOWR 15 15 µs OW10 Read Data Valid tRDV —15 — µs OW11 Release Time tRELEASE 0— 45 µs tSU OW8 OW10 One-Wire bus (BATT_LINE) OW9 OW11 System Clock 2a 1 PWM Output 3b 2b 3a 4b 4a |
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