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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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68HC705SP7 датащи(PDF) 99 Page - Freescale Semiconductor, Inc |
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68HC705SP7 датащи(HTML) 99 Page - Freescale Semiconductor, Inc |
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99 / 230 page  Parallel Input/Output Port C (28-Pin Versions Only) MC68HC705JJ7/MC68HC705JP7 — Rev. 3.0 General Release Specification Parallel Input/Output 7.5 Port C (28-Pin Versions Only) Port C is a 8-bit, general-purpose bidirectional I/O port with these features: • Individual programmable pulldown devices • High current sinking capability on all port C pins, with a maximum total for port C • High current sourcing capability on all port C pins, with a maximum total for port C 7.5.1 Port C Data Register (PORTC) The port C data register contains a bit for each of the port C pins. When a port C pin is programmed to be an output, the state of its data register bit determines the state of the output pin. When a port C pin is programmed to be an input, reading the port C data register returns the logic state of the pin. PC7–PC0 — Port C Data Bits These read/write bits are software programmable. Data direction of each bit is under the control of the corresponding bit in the port C data direction register (DDRC). Reset has no effect on port C data. $0002 Bit 7 654321 Bit 0 Read: PC7 PC6 PC5 PC4 PC3 PC2 PC1 PC0 Write: Reset: Unaffected by Reset Figure 7-13. Port C Data Register (PORTC) Freescale Semiconductor, Inc. For More Information On This Product, Go to: www.freescale.com |
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