1. General Description
1.1. Product Concept
TC35678FSG and TC35678FXG (Later omitted TC35678.) are compliant with Bluetooth® core specification 4.2. RF analog parts
and baseband digital parts are built in them, and TC35678 provides Bluetooth® HCI (Host Control Interface) functions and
Bluetooth® low energy GATT profile functions defined by Bluetooth® core specifications. Additionally, this IC works as an application
using low power Bluetooth® communication by storing the application program into built-in flash ROM.

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)
 On-chip Flash-ROM (256 KB, More than 100,000 erase and program cycles)
 Supports patch program loader function
 General Purpose IO (TC35678FSG 17 ports,TC35678FXG 32 ports)
 General Purpose Serial Interfaces
 SPI interface (1 ch assigned to a General Purpose IO)
 I2C interface (1 ch assigned to 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 assigned to a General Purpose IO)
 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 Standalone
 Sleep and Deep Sleep Functions
 Built-in DCDC converter and LDO
 Wide range of input power supply voltages supported (Booting power supply voltage : 1.9 to 3.6 V, low battery voltage
detection.)
 Built-in general purpose ADC
 External analog inputs assigned to GPIOs (TC35678FSG-5 ch, TC35678FXG-7 ch)
 Internal VDD monitoring (1 ch - connected inside)
 Package:
 TC35678FSG: QFN Package [40 pin, 5 x5 mm, 0.4 mm pitch, 0.9 mm thickness]
 TC35678FXG: QFN Package [60 pin, 7 x7 mm, 0.4 mm pitch, 0.9 mm thickness]