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. TC35661-503 is TC35661 with ROM version 503. 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