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■ Port 7 (P7)
8-bit CMOS tri-state I/O port.
Table 3-1-6 Port 7 Functions
■ Port 8 (P8)
8-bit CMOS tri-state I/O port.
Table 3-1-7 Port 8 Functions
■ Port A (PA)
8-bit CMOS tri-state input port.
Table 3-1-8 Port A Functions
Pin Name Type Dual Function Description
P70 to P71 I/O
Each individual bit can be switched to an input or output
by the P7DIR register. A pull-up or pull-down resistor for
each bit can be selected individually by the P7PLU
register.
However, pull-up and pull-down resistors cannot be
mixed. At reset, the input mode pull-up resisters are
disabled
. 42-SDIP has no pins of P70,P71. 44-QFP has no pin of
p71.
Pin Name Type Dual Function Description
P80 to P87 I/O LED0 to 7
Each individual bit can be switched to an input or output
by the P8DIR register. A pull-up resistor for each bit can
be selected individually by the P8PLU register. When
configured as outputs, it is possible to LED.
At reset, when single chip mode is selected, the input
mode pull-up resisters for P80 to P87 are disabled (high
impedance output).
Pin Name Type Dual Function Description
PA0 to PA7 Input
AN0 to AN7
A pull-up or pull-down resistor for each bit can be
selected individually by the PAPLUD register. However,
pull-up and pull-down resistors cannot be mixed.
At reset, the input mode pull-up resisters for PA0 to PA7
are disabled.
Chapter 3 Port Functions
40
Overview