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TABLE OF CONTENTS
vi EPSON S1C33L03 TECHNICAL MANUAL
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-9-12
Port Input Interrupt.......................................................................................................B-III-9-12
Key Input Interrupt .......................................................................................................B-III-9-14
Control Registers of the Interrupt Controller...............................................................B-III-9-16
I/O Memory for Input Interrupts ...................................................................................B-III-9-18
Programming Notes.................................................................................................................B-III-9-25