TC35681FSG-002

TC35680FSG-002/TC35681FSG-002 TC35680FSG-002/ TC35681FSG-002 Bluetooth Low Energy IC Rev 1.1 Bluetooth word marks registered trademark owned by the Bluetooth SIG, Inc. Arm and Cortex are registered trademarks of Arm Limited (or its subsidiaries) in the US and/or elsewhere. 2018-2019 1 2019-04-04 Toshiba Electronic Devices & Storage Corporation TC35680FSG-002/TC35681FSG-002 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 of TC35680FSG (Top View) ........................................................................................................................... 10 2.2. Pin Assignment of TC35681FSG (Top View) ............................................................................................................................ 11 2.3. Function of Each Pin .................................................................................................................................................................. 12 2.4. List of Functions of GPIO Pins .................................................................................................................................................. 14 Example of GPIO Function Setting ................................................................................................................................... 15 Limitation on Assignment of UART Function to GPIO ..................................................................................................... 16 2 Limitation on Assignment of I C Function to GPIO .......................................................................................................... 16 2.5. Power Supply Pins ..................................................................................................................................................................... 17 3. Device Overview ................................................................................................................................................................................ 19 3.1. Internal Block Diagram ............................................................................................................................................................... 19 Power Supply System ....................................................................................................................................................... 20 Clock System ..................................................................................................................................................................... 20 Hardware Start-up Sequence ........................................................................................................................................... 21 3.2. System Configuration and Operating Mode ............................................................................................................................. 22 3.3. System Configuration ................................................................................................................................................................ 23 Standalone System ........................................................................................................................................................... 23 Host-Controlled System .................................................................................................................................................... 23 3.4. Selection and Setting of Operating Mode ................................................................................................................................. 24 HCI Mode ........................................................................................................................................................................... 25 Complete Mode ................................................................................................................................................................. 25 User-App Mode ................................................................................................................................................................. 25 3.5. Start-up Sequence ..................................................................................................................................................................... 26 Details of Start-up Sequence ............................................................................................................................................ 26 3.6. Low Power System .................................................................................................................................................................... 28 State Transition .................................................................................................................................................................. 28 Available Functions in Each Low Power Mode ................................................................................................................ 29 Condition on Transition to Low Power Mode ................................................................................................................... 31 Condition on Return from Low Power Mode .................................................................................................................... 32 Acquisition of Wake-up Factor and Return from Low Power Mode ................................................................................ 32 4. Functions ............................................................................................................................................................................................ 33 4.1. Bluetooth Wireless Communication ........................................................................................................................................ 33 Supported Functions ......................................................................................................................................................... 33 RF Function ........................................................................................................................................................................ 34 4.2. Output Power Setting ................................................................................................................................................................. 34 4.3. Auto-advertise Function ............................................................................................................................................................. 34 4.4. Power Supply ............................................................................................................................................................................. 35 VBAT and VDDIO .............................................................................................................................................................. 35 Voltage Step-Down DC/DC Converter and LDO Regulator ........................................................................................... 35 4.5. Reset Interface ........................................................................................................................................................................... 36 Feature ............................................................................................................................................................................... 36 Connection Example ......................................................................................................................................................... 36 4.6. General-purpose I/O (GPIO) Function ...................................................................................................................................... 37 2 2019-04-04