RAA730501

R02DS0009EJ0120

Rev.1.20

Page 3 of 45

May. 31, 2014

Contents

1. Pin Configuration............................................................................................................................... 5

1.1

Pin Layout................................................................................................................................................................. 5

1.2

Block Diagram .......................................................................................................................................................... 6

1.3

Pin Functions ............................................................................................................................................................ 7

1.4

Connection of Unused Pins....................................................................................................................................... 9

1.5

Pin I/O Circuits ....................................................................................................................................................... 10

2. Instrumentation Amplifier ............................................................................................................... 12

2.1

Overview of Instrumentation Amplifier Features ................................................................................................... 12

2.2

Block Diagram ........................................................................................................................................................ 12

2.3

Registers Controlling the Instrumentation Amplifier.............................................................................................. 13

2.4

Procedure for Operating the Instrumentation Amplifier ......................................................................................... 15

3. D/A Converter.................................................................................................................................. 16

3.1

Overview of D/A Converter Features ..................................................................................................................... 16

3.2

Block Diagram ........................................................................................................................................................ 16

3.3

Registers Controlling the D/A Converter................................................................................................................ 17

3.4

Procedure for Operating the D/A Converter ........................................................................................................... 19

3.5

Notes on Using the D/A Converter ......................................................................................................................... 20

4. Temperature sensor .......................................................................................................................... 21

4.1

Overview of Temperature Sensor Features ............................................................................................................. 21

4.2

Block Diagram ........................................................................................................................................................ 21

4.3

Registers Controlling the Temperature Sensor ....................................................................................................... 22

4.4

Procedure for Operating the Temperature Sensor ................................................................................................... 23

5. Variable Output Voltage Regulator ................................................................................................. 24

5.1

Overview of Variable Output Voltage Regulator Features ..................................................................................... 24

5.2

Block Diagram ........................................................................................................................................................ 24

5.3

Registers Controlling the Variable Output Voltage Regulator................................................................................ 25

5.4

Procedure for Operating the Variable Output Voltage Regulator ........................................................................... 27

6. Reference Voltage Generator........................................................................................................... 28

6.1

Overview of Reference Voltage Generator Features .............................................................................................. 28

6.2

Block Diagram ........................................................................................................................................................ 28

6.3

Registers Controlling the Reference Voltage Generator ......................................................................................... 29

6.4

Procedure for Operating the Reference Voltage Generator .................................................................................... 29

6.5

Notes on Using the Reference Voltage Generator .................................................................................................. 29

7. SPI.................................................................................................................................................... 30

7.1

Overview of SPI Features ....................................................................................................................................... 30

7.2

SPI Communication ................................................................................................................................................ 31

8. Reset................................................................................................................................................. 32

8.1

Overview of Reset Feature...................................................................................................................................... 32

8.2

Registers Controlling the Reset Feature.................................................................................................................. 34