Datasheet

Section 8 I/O Ports
Rev. 2.00 Sep. 28, 2009 Page 180 of 870
REJ09B0429-0200
Table 8.1 Port Functions
Port Description
Extended Mode
(EXPE = 1)
Single-Chip Mode
(EXPE = 0)
Feature of
I/O
Port 1 General I/O port
multiplexed with
address output and
address-data
multiplex I/O
P17/A7/AD7
P16/A6/AD6
P15/A5/AD5
P14/A4/AD4
P13/A3/AD3
P12/A2/AD2
P11/A1/AD1
P10/A0/AD0
P17
P16
P15
P14
P13
P12
P11
P10
Built-in input
pull-up MOS
Port 2 General I/O port
multiplexed with
address output and
address-data
multiplex I/O
P27/A15/AD15
P26/A14/AD14
P25/A13/AD13
P24/A12/AD12
P23/A11/AD11
P22/A10/AD10
P21/A9/AD9
P20/A8/AD8
P27
P26
P25
P24
P23
P22
P21
P20
Built-in input
pull-up MOS
Port 3 General I/O port
multiplexed with
bidirectional data bus
I/O
P37/D15
P36/D14
P35/D13
P34/D12
P33/D11
P32/D10
P31/D9
P30/D8
P37
P36
P35
P34
P33
P32
P31
P30
Built-in input
pull-up MOS
Port 4 General I/O port
multiplexed with
interrupt input
P47/IRQ7/RS7/HC7
P46/IRQ6/RS6/HC6
P45/IRQ5/RS5/HC5
P44/IRQ4/RS4/HC4
P43/IRQ3/RS3/HC3
P42/IRQ2/RS2/HC2
P41/IRQ1/RS1/HC1
P40/IRQ0/RS0/HC0
Same as left LED driving
capability
(sink current
12 mA)