General description
The DA14683 is a flexible System-on-Chip combining
an application processor, memories, cryptography
engine, power management unit, digital and analog
peripherals and a Bluetooth Low Energy MAC engine
and radio transceiver.
The DA14683 is based on an ARM® Cortex®-M0 CPU
delivering up to 86 DMIPS (at maximum 96 MHz system speed) and provides a flexible memory architecture, enabling code execution from embedded memory
(RAM, ROM) or non-volatile memory (OTP or external
Quad-SPI FLASH).
The advanced power management unit of the
DA14683 enables it to run from primary and secondary
batteries, as well as provide power to external devices.
The on-chip charger and state-of-charge fuel gauge
allows the DA14683 to natively charge rechargeable
batteries over USB.
The DA14683 comes with enhanced security features
such as key manipulation, secure booting (i.e. starting
the system only if the FLASH image is authenticated),
a complete public/private hardware acceleration
engine and a hardware true random number generator
(TRNG).
Several optimised sleep modes are available to reduce
power dissipation when there is no activity

Features
 Complies to Bluetooth v5.0, ETSI EN 300 328 and
EN 300 440 Class 2 (Europe), FCC CFR47 Part 15
(US) and ARIB STD-T66 (Japan)
 Flexible processing power
 0 Hz up to 96 MHz 32-bit ARM Cortex-M0 with
4-way associative cache
 Three optimised power modes (Extended sleep,
Deep sleep and Hibernation) reducing current to
800 nA
 Memories
 64 kB One-Time-Programmable (OTP) memory
 128 kB Data SRAM with retention capabilities
 16 kB Cache SRAM with retention capabilities
 128 kB ROM (including boot ROM and BLE stack)
 Power management
 Integrated Buck DC-DC converter (1.7 V - 4.75 V)
 Three power supply pins for external devices
 Supports Li-Polymer, Li-Ion, coin, NiMH and alkaline batteries
 Charger (up to 5.0 V) with programmable curves
 High accuracy state-of-charge fuel gauge
 Programmable threshold for brownout detection
 Digitally controlled oscillators and PLL
 16/32 MHz crystal oscillator
 16 MHz RC oscillator
 32 kHz crystal and RC oscillator
 11.4 kHz RCX oscillator
 Low power PLL up to 96 MHz
 Three general purpose timer/counters with PWM
 One 16-bit up/down timer/counter with PWM
available in extended/deep sleep mode
 Application cryptographic engine with ECC, AES256, SHA-1, SHA-256, SHA-512 and True Random
Number Generator
 Digital interfaces
 37 (AQFN) or 21 (WLCSP) general purpose I/Os
with programmable voltage levels
 Quad-SPI FLASH interface
 Two UARTs, one with hardware flow control
 Two SPI+™ interfaces
 Two I2C bus interfaces at 100 kHz, 400 kHz
 Three-axes capable Quadrature Decoder
 PDM + HW decimator (2 mics or 2 speakers)
 I2S/PCM master/slave interface up to 8 channels
 Keyboard scanner with debouncing
 Infrared (IR) interface (PWM)
 USB 1.1 Full Speed (FS) device interface
 Analog interfaces
 8-channel 10-bit ADC with averaging capability
 Three matched white LED drivers
 Temperature sensor
 Radio transceiver
 2.4 GHz CMOS transceiver with integrated balun
 50  matched single wire antenna interface
 0 dBm transmit output power
 -94 dBm receiver sensitivity (BLE)
 Supply current at VBAT1 (3 V):
TX: 3.4 mA
RX: 3.1 mA (with ideal DC-DC converter)
 Packages:
 AQFN with 60 pins, 6 mm x 6 mm
 WLCSP with 53 balls, 3.406 mm x 3.010 mm