M34551E8-XXXFP_98 データシートの表示（PDF） - MITSUBISHI ELECTRIC

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M34551E8-XXXFP_98

4-BIT SINGLE-CHIP MICROCOMPUTER

MITSUBISHI ELECTRIC  

Table of contents

CHAPTER 2 APPLICATION

2.1 I/O pins .................................................................................................................................... 2-2

2.1.1 I/O ports .......................................................................................................................... 2-2

2.1.2 Related registers ............................................................................................................ 2-4

2.1.3 Port application examples ............................................................................................. 2-6

2.1.4 Notes on use .................................................................................................................. 2-8

2.2 Interrupts ................................................................................................................................. 2-9

2.2.1 Interrupt functions .......................................................................................................... 2-9

2.2.2 Related registers .......................................................................................................... 2-10

2.2.3 Interrupt application examples .................................................................................... 2-12

2.2.4 Notes on use ................................................................................................................ 2-16

2.3 Timers .................................................................................................................................... 2-17

2.3.1 Timer functions ............................................................................................................. 2-17

2.3.2 Related registers .......................................................................................................... 2-17

2.3.3 Timer application examples ........................................................................................ 2-20

2.3.4 Notes on use ................................................................................................................ 2-24

2.4 Carrier generating circuit .................................................................................................. 2-25

2.4.1 Carrier functions ........................................................................................................... 2-25

2.4.2 Related registers .......................................................................................................... 2-26

2.4.3 Carrier wave output application examples ................................................................ 2-28

2.4.4 Notes on use ................................................................................................................ 2-32

2.5 LCD function ......................................................................................................................... 2-33

2.5.1 Operation description ................................................................................................... 2-33

2.5.2 Related registers .......................................................................................................... 2-34

2.5.3 LCD application examples .......................................................................................... 2-36

2.5.4 Notes on use ................................................................................................................ 2-38

2.6 Power down function .......................................................................................................... 2-39

2.6.1 Clock control function .................................................................................................. 2-41

2.6.2 Power down function ................................................................................................... 2-41

2.6.3 Related register ............................................................................................................ 2-44

2.6.4 Power down function application example ............................................................... 2-45

2.6.5 Notes on use ................................................................................................................ 2-45

2.7 Reset ....................................................................................................................................... 2-46

2.7.1 Reset circuit .................................................................................................................. 2-46

2.7.2 Internal state at reset .................................................................................................. 2-48

2.7.3 Voltage drop detection circuit ..................................................................................... 2-49

2.8 Oscillation circuit ................................................................................................................ 2-50

2.8.1 Oscillation circuit .......................................................................................................... 2-50

2.8.2 Oscillation operation .................................................................................................... 2-51

2.8.3 Notes on use ................................................................................................................ 2-51

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4551 Group User’s Manual

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