
10-17
ML63326 User's Manual
Chapter 10 Ports (INPUT, OUTPUT, I/O PORT)
10
P93
P92
P91
P90
P9D (009H)
(R/W)
bit 3
bit 2
bit 1
bit 0
Port 9 input/output data
• Port A
PA3
PA2
PA1
PA0
PAD (00AH)
(R/W)
bit 3
bit 2
bit 1
bit 0
Port A input/output data
!
Note:
*: Bits P83 and P82 have to be set to "1" or "0" before executing an external memory transfer
instruction (MOVXB) or carrying out voice synthesis.
The pins P8.3 and P8.2 are not present in the ML63326.
For details, see Chapter 11, "External Memory Transfer Function" and Chapter 13, "Voice
Synthesis."
(2) Port data registers (P8D, P9D, PAD)
The port 8 data register (P8D), the port 9 data register (P9D), and port A data register (PAD)
are 4-bit special function registers (SFRs) used to set the output values for the ports.
When port direction register (P8DIR, P9DIR, PADIR) bits are set to "1" and the output mode
selected, the contents of the port data registers are output to the ports.
When the output mode is selected and the port data register read, the contents of the data
register are read.
The port pin levels are read when the port data registers are read with the port direction
register bits set to "0" and the input mode selected.
• Port 8
• Port 9
P83*
P82*
P81
P80
P8D (008H)
(R/W)
bit 3
bit 2
bit 1
bit 0
Port 8 input/output data
Содержание ML63326
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Страница 14: ...Chapter 1 Overview 1 ...
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Страница 38: ...Chapter 2 CPU and Memory Spaces 2 ...
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Страница 50: ...CPU Control Functions Chapter 3 3 ...
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Страница 57: ...3 6 ML63326 User s Manual Chapter 3 CPU Control Functions ...
Страница 58: ...Interrupt INT326 Chapter 4 4 ...
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Страница 72: ...Clock Generator Circuit OSC Chapter 5 5 ...
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Страница 84: ...Time Base Counter TBC Chapter 6 6 ...
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Страница 115: ...7 24 ML63326 User s Manual Chapter 7 Timers TIMER ...
Страница 116: ...Chapter 8 8 100 Hz Timer Counter 100HzTC ...
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Страница 122: ...Chapter 9 9 Watchdog Timer WDT ...
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Страница 180: ...Chapter 12 12 Melody Driver MELODY63K ...
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Страница 196: ...13 Chapter 13 Voice Synthesis ...
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Страница 236: ...15 Chapter 15 LCD Driver LCD ...
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Страница 250: ...16 Chapter 16 Battery Low Detect Circuit BLD ...
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Страница 255: ...16 4 ML63326 User s Manual Chapter 16 Battery Low Detect Circuit BLD ...
Страница 256: ...Chapter 17 17 Power Supply Circuit POWER ...
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Страница 260: ...Appendixes ...
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Страница 321: ...Appendix 60 ML63326 User s Manual Appendix G ...