Datasheet

Section 1 Overview
Rev. 2.00 Sep. 28, 2009 Page 11 of 870
REJ09B0429-0200
Type Symbol Pin No. I/O Name and Function
A23 to A16 33 to 35,
37 to 41
Address bus
A15 to A0 96 to 110,
112
Output Address output pins
D15 to D8 128 to 121
Upper 8 bits of bidirectional bus
Data bus
D7 to D0 85 to 78
Input/
Output
Lower 8 bits of bidirectional bus
AD15 to AD8 96 to 103
8 bit bus or upper 8 bits of 16-bit bus
Address-data
multiplex bus
AD7 to AD0 104 to 110,
112
Input/
Output
Lower 8 bits of 16-bit bus
NMI 11 Input Nonmaskable interrupt request input pin Interrupts
IRQ15, IRQ14,
IRQ13, IRQ12,
IRQ11, IRQ10,
IRQ9, IRQ8,
IRQ7 to IRQ5,
IRQ4,
IRQ3 to IRQ0
6, 5, 137,
136, 134,
133,
15, 16
4 to 2
138
132 to 129
Input These pins are used to request maskable
interrupts.
Either IRQn or ExIRQn can be selected as
the IRQn interrupt signal input pin.
ExIRQ15 to
ExIRQ12,
ExIRQ11 to
ExIRQ8,
ExIRQ7 to
ExIRQ5,
ExIRQ4 to
ExIRQ0
43 to 50, 75
to 68,
6, 5