ambiq micro Apollo3 Blue EVB Schnellstart-Handbuch - Seite 7

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1. Software Development Tools

The EVB has these additional features:

▪ Low power reference design

▪ Apollo3 Blue MCU in the BGA package (AMA3B1KK-KBR)

▪ Multiple power/clock options

▪ Micro USB connector for power/download/debug

▪ On-board chip antenna (A1)

▪ RF switch/connector (J1 - Murata MM8430-2610RA1) for BLE PHY testing without removing chip

antenna

▪ Segger J-Link debugger

▪ Debugger-in / debugger-out ports

▪ Five user-controlled LEDs

▪ Three push buttons for application use, plus a reset push button

▪ Power slide switch with LED power indicator

▪ Five 8-12 pin Arduino-style headers for pin/power access to shield board(s)

▪ Multiple test points for power measurements

▪ CE Mark and RoHS compliant

3.1

Secure Boot on the Apollo3 Blue MCU

Apollo3 Blue MCU parts from the Ambiq Micro factory are preprogrammed with a Secure Bootloader and

an uninitialized Customer InfoSpace, referred to as INFO0. Initial provisioning of the part would include

programming a valid INFO0 and programming the main firmware image in the flash. The Apollo3 Blue EVB

is shipped with the INFO0 configuration preprogrammed with optimal settings for the EVB layout.

For your reference, the following settings are programmed into INFO0 on the Apollo3 Blue MCU resident

on the EVB:

▪ Simo Buck is enabled, which provides lowest Apollo3 power consumption in both active and sleep

modes.

▪ Secure Bootloader (SBL) interface is configured to UART using GPIO22 and GPIO23, which allows

secure boot to be performed over the J-Link COM interface of the EVB.

▪ SBL override pin is configured to GPIO16 which is BTN1 on the EVB.

▪ All Flash and Debugger protection features are disabled.

For information on changing the INFO0 settings as well as using the Secure Bootloader, please refer to the

Apollo3 Blue Getting Started Guide, which can be found in the Ambiq Micro SDK documentation and

example scripts located in the \tools\apollo3_scripts folder. This folder contains a number of python scripts

to demonstrate generation of INFO0 settings, customer main images, and the creation of images for the

Wired Update protocol over UART.

QS-A3B-1p00

Apollo3 Blue EVB Quick Start Guide

Page 7

2018 Ambiq Micro, Inc.