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MC68HC705C8A Datasheet(PDF) 81 Page - Motorola, Inc |
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MC68HC705C8A Datasheet(HTML) 81 Page - Motorola, Inc |
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81 / 222 page  Parallel Input/Output (I/O) Port B MC68HC705C8A — Rev. 2.0 Technical Data MOTOROLA Parallel Input/Output (I/O) 81 7.4.3 Port B Logic Figure 7-6 shows the port B I/O logic. Figure 7-6. Port B I/O Logic PB7 EXTERNAL INTERRUPT REQUEST DATA DIRECTION REGISTER B BIT DDRB7 PORT B DATA REGISTER BIT PB7 READ $0005 WRITE $0001 READ $0001 RESET WRITE $0005 PBPU7 FROM OTHER VDD PORT B PINS D C Q R Q I BIT VDD FROM CCR RESET EXTERNAL INTERRUPT VECTOR FETCH IRQ IRQ FROM OPTION REGISTER IRQ LATCH FROM MOR1 |
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