10

µPD178023, 178024

Data Sheet U14126EJ1V0DS00

CONTENTS

1.

PIN FUNCTION LIST ......................................................................................................................

11

1.1

Port Pins .................................................................................................................................

11

1.2

Pins Other Than Port Pins ...................................................................................................

12

1.3

I/O Circuits of Pins and Recommended Connections of Unused Pins .........................

13

2.

MEMORY SPACE ............................................................................................................................ 16

2.1

Memory Size Select Register (IMS) .................................................................................... 17

2.2

Internal Extension RAM Size Select Register (IXS) .........................................................

18

3.

FEATURES OF PERIPHERAL HARDWARE FUNCTIONS ..........................................................

19

3.1

Ports ........................................................................................................................................ 19

3.2

Clock Generation Circuit .....................................................................................................

20

3.3

Timers ..................................................................................................................................... 20

3.4

Buzzer Output Control Circuit ............................................................................................. 22

3.5

A/D Converter ........................................................................................................................

23

3.6

Serial Interface ......................................................................................................................

24

3.7

PLL Frequency Synthesizer ................................................................................................

26

3.8

Frequency Counter ............................................................................................................... 27

4.

INTERRUPT FUNCTION .................................................................................................................

28

5.

STANDBY FUNCTION .................................................................................................................... 31

6.

RESET FUNCTION ......................................................................................................................... 31

7.

INSTRUCTION SET ........................................................................................................................

32

8.

ELECTRICAL SPECIFICATIONS ...................................................................................................

35

9.

PACKAGE DRAWING ..................................................................................................................... 44

10. RECOMMENDED SOLDERING CONDITIONS .............................................................................

46

APPENDIX A. DEVELOPMENT TOOLS ............................................................................................. 47

APPENDIX B. RELATED DOCUMENTS ............................................................................................ 49