1.2. Features

? Wireless communication function

? Compliant with Bluetooth? Low Energy Ver.5.0 specification.

? Built-in Bluetooth? baseband circuit

? Built-in Bluetooth? RF circuit

? Maximum output power: +8 dBm

? Maximum RX sensitivity: -105.0 dBm (in case of Coded PHY and S = 8)

? RSSI accuracy: ±2 dB (in case of -90 to -10 dBm input)

? HCI commands/Extended HCI commands (implemented in the mask ROM)

? Control API for GATT/SM layer (TCU commands: Toshiba Command Unit) (implemented in the mask ROM)

? Auto-advertising feature

? Output power setting feature

? Microcontroller unit

? Built-in Arm? Cortex?-M0 processor (Maximum operating frequency is 32 MHz.)

? Built-in mask ROM

? Boot loader

? API for the hardware control

? Bluetooth? wireless function API

? Bluetooth? protocol stack

? Built-in retention SRAM (User area is 76 KB out of total 144 KB.)

? Interface, AD converter, and Debug function

? General-purpose I/O (GPIO) (18 pins)

? General-purpose serial interfaces

? UART interface (2 channels. Shared with the GPIO pins.)

? HCI mode: One channel is used as a host interface (9600 bps to 921.6 kbps)

? User-App mode: 600 to 2000 kbps (Maximum baudrate may be 2000 kbps or less and depends on userapplication

program.)

? SPI interface (2 channels. Shared with the GPIO pins.)

? I2C interface (2 channels. Shared with the GPIO pins.)

? TC35681 uses one channel as the interface to the EEPROM for User-App mode.

? PWM interface (4 channels. Shared with the GPIO pins.)

? Pulse generation function

? “Rhythm” function (function to mask a pulse signal)

? AD converter (ADC)

? General-purpose voltage measurement (5 channels. Shared with the GPIO pins.)

? Power supply voltage (VBAT) measurement (1 channel. Connected internally.)

? Interface for Emulator debug control

? SWD (Serial Wire Debug): 2-wire system (1 channel)

? Clock

? Reference clock (32 MHz)

? Built-in crystal oscillator with a frequency adjustment function

? Sleep clock (32.768 kHz)

? Built-in crystal oscillator with a frequency adjustment function

? External clock input is supported.

? Built-in silicon oscillator (SiOSC)

? Sleep clock output function (Shared with the GPIO pins.)

? Power supply

? Power supply circuit

? Support for wide range of the input power voltage

? DC/DC converter and LDO regulator are integrated.

? Built-in Power Management Unit for the low power consumption function.

? Independent power pins for the I/O circuits (VDDIO)

? System function

? 2 system configurations are supported.

? Host-controlled system (A host CPU controls this device.)

? Standalone system (The operation of this device is controlled by its own CPU.)

? 3 operating modes are supported.

? HCI mode

? Control by HCI and Extended HCI commands

? User application (firmware) programming

? For radio certification tests in different countries and regions

? For Bluetooth? qualification test

? For other RF tests

? Complete mode

? Control of this device by the TCU commands (Control commands in the GATT/SM layer)

? User-App mode

? Download function of a user application program to this device

? Download from an external EEPROM or a host CPU

? Execution of a user application program

? Low power system feature

? 3 low power modes (Sleep, Backup, and Deep Sleep)

? Support for Interrupts

? Patch support

? Patch function (maximum 4)

? Auto-patch function

? DMA support

? Built-in 7-channel DMA controller (2 to 6 channels are available for a user.)

? Clock and Timer

? RTC

? RTC function with the accuracy of sleep clock frequency

? Clock and Calendar function: YY/MM/DD hh:mm:ss (24-hour clock) and day of the week

? Alarm function: Alarm setting by hh:mm and either a date or a day, and an interrupt by the alarm generation

? Leap year function (the exceptional procedure for every 100 years is not supported.)

? RTC is working even in the Sleep and Backup modes.

? Timer

? BCTimer

? 3-channel hardware timer (One channel is dedicated to the system.)

? 16-bit counter which can be loaded automatically every 1 μs at minimum.

? The count of the timer stops in low power mode.

? GTimer

? 1-channel hardware timer

? Built-in prescaler to divide the clock (1 to 1024 division). The minimum interval is 38 ns to 39 μs.

? 16-bit counter which can be loaded automatically.

? The count of the timer stops in low power mode.

? OS timer (1-second timer and 1-ms timer)

? Timer controlled by the OS

? Watchdog timer (WDT) function

? Security

? True Random Number Generator (TRNG)

? A random number of 256 bits at maximum is generated by DRBG and ESG.

? Compliant with NIST SP800-22 and BSI random number test.

? Hardware encryption engine (AES128, only encryption)

? AEC-Q100 is supported.

? Package

? QFN package [40 pins, 6 mm x 6 mm, 0.5-mm pitch, 1.0-mm thickness, and Solder-wettable pins]