FEDL64168-01
ML64168
Semiconductor
Table 1 Pin Descriptions ( Basic Functions ) ( continued )
Pin No.
Pad
No.
Function
Symbol
Type
Description
4-bit input port ( Port 0 )
Selectable as pull-up resistor input, pull-down resistor
input, or high impedance input by the port 01 control
register ( P01CON ).
GA,
GP
TB
P0.0/
INT1/
CAPIN0
P0.1/
77 75
75
INT1/
CAPIN1
P0.2/
78 76
79 77
80 78
76
77
78
I
INT1
P0.3/
INT1/
CMP
4-bit output port ( Port 1 )
P1.0
P1.1
P1.2
P1.3
73 71
74 72
75 73
76 74
71
72
73
74
Selectable as NMOS open drain output or CMOS
output by the port 01 control register ( P01CON ).
P1.0 is a high current drive output port.
O
P2.0/
INT0
P2.1/
INT0
P2.2/
INT0
P2.3/
INT0
P3.0/
INT0
P3.1/
INT0
P3.2/
INT0
P3.3/
INT0/
SIN
P4.0/
INT0/
SOUT
P4.1/
INT0/
SPR
P4.2/
INT0/
SCLK
P4.3/
INT0/
MON
4-bit input-output port ( Port 2 )
18 16
19 17
20 18
21 19
22 20
23 21
24 22
16
17
18
19
20
21
22
Fllowing can be specified for each bit by the port 2
control registers 0 to 3 ( P20CON to P23CON ).
(1) input or output
I/O
(2) pull-up/pull-down resistor input or high impedance
input
(3) NMOS open drain output or CMOS output
Ports
4-bit input-output port ( Port 3 )
Following can be specified for each bit by the port 3
control registers 0 to 3 ( P30CON to P33CON ).
(1) input or output
(2) pull-up/pull-down resistor input or high impedance
input
(3) NMOS open drain output or CMOS output
I/O
25 23
26 24
27 25
28 26
29 27
23
24
25
26
27
4-bit input-output port ( Port 4 )
Following can be specified for each bit by the port 4
control registers 0 to 3 ( P40CON to P43CON ).
(1) input or output
(2) pull-up/pull-down resistor input or high impedance
input
(3) NMOS open drain output or CMOS output
I/O
9/49
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