1. Introduction

1.1. Abstract

The DA1459x can boot from external serial devices to enable development of application code or to connect to an external (micro)controller. At power-up the system listens on the serial interface and tries to load the boot code from an external host. This document describes the booting sequence for the serial interfaces and provides developers with the necessary information for realizing the protocol required for establishing communication between an external device and the DA1459x.

Note

DA1459x is referring to DA14592 and DA14594.

The below table presents the various members of the DA1459x product family and their supported features.

Table 1 DA1459x comparison

Features

DA14592

DA14594

RAM capacity

96 kB

96 kB

eFlash capacity

256 kB

256 kB

Bluetooth® LE 5.2 core features

YES

YES

Bluetooth® LE 5.3 core features

NO

YES

Advertising Extensions support

NO

YES

Periodic Advertising support

NO

YES

AoA/ AoD support

NO

YES

Wireless Ranging (WiRa) support

NO

YES

Up to 32 GPIOs

YES

YES

Packages

WLCSP39 and FCQFN52

WLCSP39 and FCQFN52

1.2. Terms and definitions

OTP One-Time Programmable

AoA Angle of Arrival

AoD Angle of Departure

STX Start of Text (ASCII character)

SOH Start of Heading (ASCII character)

URX UART Receive Port

UTX UART Transmit Port

1.3. References

1.4. Prerequisites