TC35681IFTG-002

2 / 84

2018-10-03

Preliminary

CONFIDENTIAL

Table of Contents

Preface

...............................................................................................................................................................................................................5

Related Documents

.....................................................................................................................................................................................5

Technical Terms and Abbreviations

.........................................................................................................................................................5

1.

Function Outlines and Features ...........................................................................................................................................................6

1.1.

Function Outlines ..........................................................................................................................................................................6

1.2.

Features.........................................................................................................................................................................................7

2.

Pin Assignment................................................................................................................................................................................... 10

2.1.

Pin Assignment (Top View)........................................................................................................................................................ 10

2.2.

Function of Each Pin...................................................................................................................................................................11

2.3.

List of Functions of GPIO Pins .................................................................................................................................................. 13

Example of GPIO Function Setting................................................................................................................................... 14

Limitation on Assignment of UART Function to GPIO..................................................................................................... 15

Limitation on Assignment of I2C Function to GPIO.......................................................................................................... 15

2.4.

Power Supply Pins..................................................................................................................................................................... 16

3.

Device Overview ................................................................................................................................................................................ 18

3.1.

Internal Block Diagram............................................................................................................................................................... 18

Power Supply System....................................................................................................................................................... 19

Clock System..................................................................................................................................................................... 19

Hardware Start-up Sequence........................................................................................................................................... 20

3.2.

System Configuration and Operating Mode............................................................................................................................. 21

3.3.

System Configuration ................................................................................................................................................................ 22

Standalone System ........................................................................................................................................................... 22

Host-Controlled System .................................................................................................................................................... 22

3.4.

Selection and Setting of Operating Mode................................................................................................................................. 22

HCI Mode........................................................................................................................................................................... 23

Complete Mode................................................................................................................................................................. 23

User-App Mode ................................................................................................................................................................. 23

3.5.

Start-up Sequence..................................................................................................................................................................... 24

Details of Start-up Sequence............................................................................................................................................ 24

3.6.

Low Power System.................................................................................................................................................................... 26

State Transition.................................................................................................................................................................. 26

Available Functions in Each Low Power Mode................................................................................................................ 27

Condition on Transition to Low Power Mode ................................................................................................................... 28

Condition on Return from Low Power Mode.................................................................................................................... 29

Acquisition of Wake-up Factor and Return from Low Power Mode................................................................................ 29

4.

Functions ............................................................................................................................................................................................ 30

4.1.

Bluetooth® Wireless Communication........................................................................................................................................ 30

Supported Functions ......................................................................................................................................................... 30

RF Function........................................................................................................................................................................ 31

4.2.

Output Power Setting................................................................................................................................................................. 31

4.3.

Auto-advertise Function............................................................................................................................................................. 31

4.4.

Power Supply............................................................................................................................................................................. 32

VBAT and VDDIO.............................................................................................................................................................. 32

Voltage Step-Down DC/DC Converter and LDO Regulator ........................................................................................... 32

4.5.

Reset Interface........................................................................................................................................................................... 33

Feature............................................................................................................................................................................... 33

Connection Example......................................................................................................................................................... 33

4.6.

General-purpose I/O (GPIO) Function...................................................................................................................................... 34

Feature............................................................................................................................................................................... 34