
I - 13
Chapter 1
Overview
Pin Description
Table 1-3-4
Pin Function Summary (3/7)
Name
No.
I/O
Other
Function
Description
80LQFP
84QFP
P70
P71
P72
P73
P74
P75
P76
P77
61
62
63
64
65
66
67
68
64
65
66
67
68
69
70
71
I/O
SEG15
SEG14
SEG13
SEG12
SEG11
SEG10
SEG9
SEG8
I/O port 7
8-bit CMOS tri-state I/O port.
Each bit can be set individually as either an input or
output by the P7DIR register. A pull-up resistor for each
bit can be selected individually by the P7PLU register.
At reset, the i nput mode i s selected and pull-up
resistors are disabled (high impedance output).
P80
P81
P82
P83
P84
P85
P86
P87
69
70
71
72
73
74
75
76
72
73
74
75
76
77
78
79
I/O
SEG7
SEG6
SEG5
SEG4
SEG3
SEG2
SEG1
SEG0
I/O port 8
8-bit CMOS tri-state I/O port.
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.
At reset, the i nput mode i s selected and pull-up
resistors are disabled (high impedance output).
PA0
PA1
PA2
PA3
PA4
PA5
PA6
PA7
18
19
20
21
22
23
24
25
20
21
22
23
24
25
26
27
I/O
AN0
AN1
AN2
AN3
AN4
AN5
AN6
AN7
Input port A
8-bit input port.
A pull-up or pull-down resistor for each bit can be
selected individually by the PAPLUD resister. However,
pull-up and pull-down resistors cannot be mixed.
At reset, the input mode is selected and pull- up
resistors are disabled.
SBO0
SBO2
28
31
30
33
Output
P00, TXD
P03
Serial interface
transmission data
output pins
Transmission data output pins for serial interfaces 0, 2.
The output configuration, either CMOS push-pull or n-
channel open-drain can be selected. Pull-up and pull-
down resi stors can be selected by the P0PLUD
register. Select output mode by the P0DIR register, and
serial data output mode by serial mode register 1
(SC0MD1, SC2MD1).
These can be used as normal I/O pins when the serial
interface is not used.