TABLE OF CONTENTS

III-7 CLOCK TIMER ...............................................................................................

B-III-7-1

Configuration of Clock Timer.........................................................................................................................

B-III-7-1

Control and Operation of the Clock Timer ...............................................................................................

B-III-7-2

Interrupt Function ..............................................................................................................................................

B-III-7-4

Examples of Use of Clock Timer .................................................................................................................

B-III-7-6

I/O Memory of Clock Timer............................................................................................................................

B-III-7-7

Programming Notes........................................................................................................................................

B-III-7-12

III-8 SERIAL INTERFACE ......................................................................................

B-III-8-1

Configuration of Serial Interfaces ................................................................................................................

B-III-8-1

Features of Serial Interfaces...........................................................................................................

B-III-8-1

I/O Pins of Serial Interface.............................................................................................................................

B-III-8-2

Setting Transfer Mode ......................................................................................................................

B-III-8-3

Clock-Synchronized Interface.......................................................................................................................

B-III-8-4

Outline of Clock-Synchronized Interface....................................................................................

B-III-8-4

Setting Clock-Synchronized Interface.........................................................................................

B-III-8-5

Control and Operation of Clock-Synchronized Transfer......................................................

B-III-8-7

Asynchronous Interface................................................................................................................................

B-III-8-12

Outline of Asynchronous Interface .............................................................................................

B-III-8-12

Setting Asynchronous Interface..................................................................................................

B-III-8-13

Control and Operation of Asynchronous Transfer................................................................

B-III-8-16

IrDA Interface....................................................................................................................................................

B-III-8-21

Outline of IrDA Interface.................................................................................................................

B-III-8-21

Setting IrDA Interface......................................................................................................................

B-III-8-21

Control and Operation of IrDA Interface...................................................................................

B-III-8-23

Serial Interface Interrupts and DMA.........................................................................................................

B-III-8-24

I/O Memory of Serial Interface....................................................................................................................

B-III-8-28

Programming Notes........................................................................................................................................

B-III-8-46

III-9 INPUT/OUTPUT PORTS .................................................................................

B-III-9-1

Input Ports (K Ports).........................................................................................................................................

B-III-9-1

Structure of Input Port.......................................................................................................................

B-III-9-1

Input-Port Pins .....................................................................................................................................

B-III-9-2

Notes on Use........................................................................................................................................

B-III-9-2

I/O Memory of Input Ports ...............................................................................................................

B-III-9-3

I/O Ports (P Ports).............................................................................................................................................

B-III-9-4

Structure of I/O Port...........................................................................................................................

B-III-9-4

I/O Port Pins .........................................................................................................................................

B-III-9-4

I/O Control Register and I/O Modes............................................................................................

B-III-9-5

I/O Memory of I/O Ports ...................................................................................................................

B-III-9-6

Input Interrupt ...................................................................................................................................................

B-III-9-11

Port Input Interrupt ...........................................................................................................................

B-III-9-11

Key Input Interrupt............................................................................................................................

B-III-9-13

Control Registers of the Interrupt Controller..........................................................................

B-III-9-15

I/O Memory for Input Interrupts ...................................................................................................

B-III-9-17

Programming Notes .........................................................................................................................

B-III-9-23

III-10 Mobile Access Interfaces............................................................................

B-III-10-1

Configuration of Mobile Access Interfaces ............................................................................................

B-III-10-1

I/O Pins for Mobile Access Interfaces.......................................................................................

B-III-10-2

Basic Settings for Mobile Access Interfaces ..........................................................................

B-III-10-4

UART Communications Mode....................................................................................................................

B-III-10-7

Overview...............................................................................................................................................

B-III-10-7

PDC Communications Mode.......................................................................................................................

B-III-10-8

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EPSON