1. General Description
1.1. Product Concept
TC35679FSG (Later omitted TC35679.) is compliant with Bluetooth® core specification 4.2. RF analog parts and baseband digital
parts are built in it, and TC35679 provides Bluetooth® HCI (Host Control Interface) functions and Bluetooth® low energy GATT profile
functions defined by Bluetooth® specifications. TC35679 works as an application using Bluetooth® low energy communication system
by connected with external host processor or external non-volatile memory.

1.2. Features
 Compliant with Bluetooth® Ver4.2 low energy
 Built-in ARM® Cortex®-M0 (13 MHz or 26 MHz operation frequency is able to select to run)
 On-chip mask ROM for Bluetooth® program (384 KB)
 On-chip work RAM for Bluetooth® Baseband process (192 KB)
 Supports patch program loader function
 General Purpose IO (17 ports)
 General Purpose Serial Interfaces
 SPI interface (1 ch - shared with a General Purpose IO)
 I2C interface (1 ch - shared with a General Purpose IO)
 Host CPU Interface
 UART interface (9600 bps to 921.6 kbps, 2 ch - shared with GPIOs)
 SPI interface
 Emulator debug control interface
 SWD ( Serial Wire Debug) 2-wire (1 ch)
 Wake-up Interface (2 ch - shared with General Purpose IOs)
 Wake-up input function from sleep and deep sleep
 PWM Interface (4 ch assigned to General Purpose IOs)
 Reference Clock Input (26 MHz)
 Built-in oscillator for crystal oscillator connection
 Sleep Clock Input (32.768 kHz)
 External oscillator input supported
 Built-in oscillator for crystal oscillator connection
 Works as external host control and standalone
(Please refer to the software application notes and programming guide for the method of control software design.)
 Sleep and Deep Sleep Functions
 Built-in DCDC converter and LDO
 Wide range of input power supply voltages supported (1.8 to 3.6 V, Built-in low battery voltage detection.)
 Built-in general purpose ADC
 External analog inputs (5 ch - shared with General Purpose IOs)
 Internal Power supply voltage monitoring (1 ch - connected inside)
 External radio front-end control
 Radio transmitting and receiving timing signal output (1 ch - shared with a General Purpose IO)
 Package:
 TC35679FSG: QFN Package [40 pin, 5 x 5 mm, 0.4 mm pitch, 0.9 mm thickness]