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MC908QC4CDRE Datasheet(PDF) 27 Page - Freescale Semiconductor, Inc |
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MC908QC4CDRE Datasheet(HTML) 27 Page - Freescale Semiconductor, Inc |
27 / 274 page Direct Page Registers MC68HC908QC16 • MC68HC908QC8 • MC68HC908QC4 Data Sheet, Rev. 5 Freescale Semiconductor 27 Addr. Register Name Bit 7 6 5 4321 Bit 0 $0000 Port A Data Register (PTA) See page 108. Read: 0 R PTA5 PTA4 PTA3 PTA2 PTA1 PTA0 Write: 0 Reset: Unaffected by reset $0001 Port B Data Register (PTB) See page 110. Read: PTB7 PTB6 PTB5 PTB4 PTB3 PTB2 PTB1 PTB0 Write: Reset: Unaffected by reset $0002 Port C Data Register (PTC) See page 112. Read: 0 0 0 0 PTC3 PTC2 PTC1 PTC0 Write: Reset: Unaffected by reset $0003 Port D Data Register (PTD) See page 114. Read: PTD7 PTD6 PTD5 PTD4 PTD3 PTD2 PTD1 PTD0 Write: Reset: Unaffected by reset $0004 Data Direction Register A (DDRA) See page 108. Read: 0 0 DDRA5 DDRA4 DDRA3 0 DDRA1 DDRA0 Write: Reset: 00000000 $0005 Data Direction Register B (DDRB) See page 110. Read: DDRB7 DDRB6 DDRB5 DDRB4 DDRB3 DDRB2 DDRB1 DDRB0 Write: Reset: 00000000 $0006 Data Direction Register C (DDRC) See page 113. Read: 0 0 0 0 0 DDRC2 DDRC1 DDRC0 Write: Reset: 00000000 $0007 Data Direction Register D (DDRD) See page 115. Read: DDRD7 DDRD6 DDRD5 DDRD4 DDRD3 DDRD2 DDRD1 DDRD0 Write: Reset: 00000000 $0008 Reserved $0009 Port C Input Pullup Enable Register (PTCPUE) See page 114. Read: 0 0 0 0 PTCPUE3 PTCPUE2 PTCPUE1 PTCPUE0 Write: Reset: 00000000 $000A Port D Input Pullup Enable Register (PTDPUE) See page 116. Read: PTDPUE7 PTDPUE6 PTDPUE5 PTDPUE4 PTDPUE3 PTDPUE2 PTDPUE1 PTDPUE0 Write: Reset: 00000000 $000B Port A Input Pullup Enable Register (PTAPUE) See page 109. Read: OSC2EN 0 PTAPUE5 PTAPUE4 PTAPUE3 PTAPUE2 PTAPUE1 PTAPUE0 Write: Reset: 00000000 $000C Port B Input Pullup Enable Register (PTBPUE) See page 111. Read: PTBPUE7 PTBPUE6 PTBPUE5 PTBPUE4 PTBPUE3 PTBPUE2 PTBPUE1 PTBPUE0 Write: Reset: 00000000 = Unimplemented R = Reserved U = Unaffected Figure 2-2. Control, Status, and Data Registers (Sheet 1 of 8) |
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