3822 datasheet(6/328 Pages) RENESAS

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Table of contents

3822 GROUP USER’S MANUAL

Table of contents

CHAPTER 1. HARDWARE

Description ..................................................................................................................................... 1-2

Features .......................................................................................................................................... 1-2

Applications ................................................................................................................................... 1-2

Pin configuration .......................................................................................................................... 1-3

Functional block diagram ........................................................................................................... 1-4

Pin description .............................................................................................................................. 1-5

Part numbering ............................................................................................................................. 1-7

Group expansion .......................................................................................................................... 1-8

Group expansion (extended operating temperature version) .............................................. 1-9

Functional description ............................................................................................................... 1-10

Central processing unit (CPU) ................................................................................................ 1-10

CPU mode register ................................................................................................................. 1-10

Memory................................................................................................................................... 1-11

I/O ports .................................................................................................................................. 1-13

Interrupts ................................................................................................................................ 1-18

Timers ..................................................................................................................................... 1-21

Serial I/O................................................................................................................................. 1-25

A-D converter ......................................................................................................................... 1-29

LCD drive control circuit ......................................................................................................... 1-30

φ clock output function ............................................................................................................1-36

Reset circuit ............................................................................................................................ 1-37

Clock generating circuit .......................................................................................................... 1-39

Notes on programming ........................................................................................................... 1-42

Data required for mask orders ................................................................................................ 1-43

Absolute maximum ratings ..................................................................................................... 1-44

Recommended operating conditions ...................................................................................... 1-44

Electrical characteristics ......................................................................................................... 1-46

A-D converter characteristics ................................................................................................. 1-48

Timing requirements 1 ............................................................................................................ 1-49

Timing requirements 2 ............................................................................................................ 1-49

Switching characteristics 1 ..................................................................................................... 1-50

Switching characteristics 2 ..................................................................................................... 1-50

Timing diagram ....................................................................................................................... 1-51

CHAPTER 2. APPLICATION

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

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

2.1.2 Function pins ................................................................................................................... 2-7

2.1.3 Application examples ....................................................................................................... 2-8

2.1.4 Notes on use ................................................................................................................. 2-12

2.2 Interrupts ............................................................................................................................... 2-15

2.2.1 Explanation of operations .............................................................................................. 2-15

2.2.2 Control ........................................................................................................................... 2-19

2.2.3 Related registers ........................................................................................................... 2-22

2.2.4 INT interrupts ................................................................................................................. 2-28

2.2.5 Key input interrupt ......................................................................................................... 2-29

2.2.6 Notes on use ................................................................................................................. 2-31

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