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M68HC08 датащи(PDF) 39 Page - Freescale Semiconductor, Inc |
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M68HC08 датащи(HTML) 39 Page - Freescale Semiconductor, Inc |
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39 / 332 page ![]() General Description MC68HC908JB16 — Rev. 1.1 Technical Data Freescale Semiconductor General Description 39 PTC0/TxD PTC1/RxD 2-bit general purpose I/O port. IN/OUT VDD Each pin has programmable internal pull-up device. IN VDD PTC0 as TxD of SCI module. OUT VDD PTC1 as RxD of SCI module. IN VDD PTD0–PTD5(2) 6-bit general purpose I/O port; open-drain when configured as output. IN OUT VDD VREG or VDD PTD0–PTD1 have configurable 25mA sink for infrared LED. OUT VREG or VDD PTD2–PTD5 have configurable 10mA sink for LED. OUT VREG or VDD PTE0/TCLK PTE1/T1CH01 PTE2/T2CH01 PTE0–PTE2 are general purpose I/O lines. IN/OUT VDD PTE0–PTE2 have programmable internal pullup when configured as input or output. IN/OUT VDD PTE0 as TCLK of TIM1 and TIM2. IN VDD PTE1 as T1CH01 of TIM1. IN/OUT VDD PTE2 as T2CH01 of TIM2. IN/OUT VDD PTE3/D+ PTE4/D– PTE3–PTE4 general purpose I/O lines; open-drain when configured as output. IN OUT VDD VREG or VDD PTE3–PTE4 have programmable internal pullup when configured as input. IN VDD PTE3 as D+ of USB module. IN/OUT VREG PTE4 as D– of USB module. IN/OUT VREG PTE4 as additional IRQ interrupt. IN VDD Notes: 1. Pin available on 32-pin package only. 2. PTD[5:1] pins available on 28-pin package only. Table 1-1. Summary of Pin Functions PIN NAME PIN DESCRIPTION IN/OUT VOLTAGE LEVEL |
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