1. General Description

1.1. Product Concept

TC35661 is the 1-chip CMOS IC for Bluetooth® communication, which includes an RF analog part and a Baseband digital part.

Each supported function depends on ROM version. TC35661-551 is TC35661 with ROM version 551. It supports both SPP (Serial

Port Profile) and GATT (Bluetooth® Low Energy).

1.2. Features

 SPP (Serial Port Profile) and GATT (Generic Attribute Profile)

 UART as Host CPU Interface

 Baud rate from 2400 bps to 3.25 Mbps (Default 115200 bps)

 4-wire

 EEPROM control

 I2C interface

 API for General Purpose I/O (GPIO) control

 19 ports (with pull-up and pull-down resistors)

 API for Wake-up Interface

 Wake-up input

 Wake-up status output

 Host wake-up output

 API for Low power mode

 Sleep function

 Wake up by UART command

 Wake up by GPIO0 input

 Selectable source of the sleep clock 32.768 kHz (External input or Clock divided from 26 MHz)

 Synchronization signal output

 For LED blinking function