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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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HC705MC4GRS/D датащи(PDF) 104 Page - NXP Semiconductors |
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HC705MC4GRS/D датащи(HTML) 104 Page - NXP Semiconductors |
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104 / 180 page  Pulse Width Modulator MC68HC705MC4 — Rev. 2.0 Pulse Width Modulator 10.4.2 RATE Register The RATE register, shown in Figure 10-9, selects the 8-bit PWM counter input clock. The PWM output rate select bits (Rx[3:0]) for each channel allow for 16 different PWM duty cycles. The PWM output rate select register selects the 8-bit PWM counter input clock. Table 10-3 provides a rate selection table for a 6-MHz crystal. Address: $0016 Bit 7 654321 Bit 0 Read: RA3 RA2 RA1 RA0 RB3 RB2 RB1 RB0 Write: Reset: 00000000 Figure 10-9. PWM Rate Register (RATE) Table 10-3. PWM Rate Select Table for 6-MHz Crystal Rx[3:0] PWM Output Cycle 0 23.4 kHz 1 11.7 kHz 2 5.86 kHz 3 2.93 kHz 4 1.46 kHz 5 732 Hz 6 366 Hz 7 183 Hz 8 15.6 kHz 9 7.8 kHz A 3.9 kHz B 1.95 kHz C 975 Hz D 488 Hz E 244 Hz F 122 Hz Freescale Semiconductor, Inc. For More Information On This Product, Go to: www.freescale.com |
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