ambiq micro Apollo4 Blue Plus Manuel utilisateur
QUICK START GUIDE
Apollo4 Blue Plus (KBR) EVB
(EVB Revision 1.0)
Ultra-low Power Apollo SoC Family
Doc. ID: QS-A4BP_KBR-1p0
Document Revision 1.0, September 2022
Apollo4 Blue Plus (KBR) EVB Quick Start Guide
QS-A4BP_KBR-1p0 Page 2 2022 Ambiq Micro, Inc.
All rights reserved.
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Apollo4 Blue Plus (KBR) EVB Quick Start Guide
QS-A4BP_KBR-1p0 Page 3 2022 Ambiq Micro, Inc.
All rights reserved.
Table of Content
1. Introduction ............................................................................................................. 6
2. Document Revision History..................................................................................... 6
3. Reference Documents and Software...................................................................... 7
4. Quick Start .............................................................................................................. 7
5. Overview of the Apollo4 Blue Plus (KBR) EVB....................................................... 8
6. Debug Interface .................................................................................................... 12
7. Software Development Tools................................................................................ 14
8. Power Supply Options and Measuring Current..................................................... 15
9. Non-Power Solder Bridges ................................................................................... 19
10. Ordering Information........................................................................................... 21
Apollo4 Blue Plus (KBR) EVB Quick Start Guide
QS-A4BP_KBR-1p0 Page 4 2022 Ambiq Micro, Inc.
All rights reserved.
List of Figures
Figure 1. Apollo4 Blue Plus (KBR) EVB...................................................................... 8
Figure 2. Apollo4 Blue Plus (KBR) Plus EVB - Major Top Side Components............. 8
Figure 3. Apollo4 Blue Plus (KBR) Plus EVB - Major Bottom Side Components ....... 9
Figure 4. Apollo4 Blue Plus (KBR) Plus EVB - Top Side Parts Location.................... 9
Figure 5. Apollo4 Blue Plus (KBR) Plus EVB - Bottom Side Parts Location............. 10
Figure 6. Apollo4 Blue Plus (KBR) EVB Using On-board J-Link Debugger.............. 12
Figure 7. Apollo4 Blue Plus (KBR) EVB’s DEBUG IN Header (J13)......................... 13
Figure 8. Apollo4 Blue Plus (KBR) EVB Power Supplies Solder Bridge Connection 15
Figure 9. Apollo4 Blue Plus (KBR) EVB USB Load Switch Circuit ........................... 16
Figure 10. Apollo4 Blue Plus (KBR) EVB VDD18 Load Switch Circuit ..................... 16
Figure 11. Apollo4 Blue Plus (KBR) EVB Voltage Test Points on Header J2........... 17
Figure 12. Apollo4 Blue Plus (KBR) EVB Voltage Selection on Header J3 .............. 17
Figure 13. Audio Jack J18 and AUDADC Audio Source Selections ......................... 20
Figure 14. Audio Header J17 .................................................................................... 20
Apollo4 Blue Plus (KBR) EVB Quick Start Guide
QS-A4BP_KBR-1p0 Page 5 2022 Ambiq Micro, Inc.
All rights reserved.
List of Tables
Table 1: Document Revision History........................................................................... 6
Table 2: Peripherals Supporting Solder Bridge Connections.................................... 19
Table 3: EVB Ordering Information........................................................................... 21
Table 4: SoC Ordering Information........................................................................... 21
Apollo4 Blue Plus (KBR) EVB Quick Start Guide
QS-A4BP_KBR-1p0 Page 6 2022 Ambiq Micro, Inc.
All rights reserved.
1. Introduction
This document provides guidance for setting up the Apollo4 Blue Plus (KBR) Evaluation Board (EVB),
revision 1, part number AMA4BPEVB, to get started executing code examples, measuring power
consumption in various configurations, and beginning software development.
This version of the EVB contains silicon version C0 of the Apollo4 Blue Plus (KBR) which supports
Bluetooth 5.1 Low Energy(1).
2. Document Revision History
1. The Bluetooth® word mark and logos are registered trademarks owned by the Bluetooth SIG, Inc. and any use of such
marks is under license. Other trademarks and trade names are those of their respective owners.
FCC Regulatory Notice
This kit has not been authorized under the rules of the FCC and is designed to (1) allow product
developers to evaluate electronic components and circuitry associated with the kit to determine
whether to incorporate such items in a finished product, and (2) enable software developers to
write software applications for use with the end product.
This kit is not a finished product and may not be resold or otherwise marketed. Developers using
this reference design in their product are responsible for all required FCC equipment
authorizations.
Operation is subject to the condition that this product not cause harmful interference to licensed
radio stations and that this product accept harmful interference. Unless the assembled kit is
designed to operate under part 15, part 18 or part 95 of 47 CFR Chapter I - FCC, the operator of
the kit must operate under the authority of an FCC license holder or must secure an experimental
authorization under part 5 of the latter chapter.
Rev # Date Description
1.0 September 2022 Document initial public release
Table 1: Document Revision History
Apollo4 Blue Plus (KBR) EVB Quick Start Guide
QS-A4BP_KBR-1p0 Page 7 2022 Ambiq Micro, Inc.
All rights reserved.
3. Reference Documents and Software
The following items, which can be downloaded from the Apollo4 Blue Plus Product Page link on https://
ambiq.com/, may be useful in understanding and using the EVB.
▪ EVB Schematic
▪ Datasheet
▪ Programmer’s Guide
▪ Errata List
▪ AmbiqSuite SDK
4. Quick Start
The EVB Kit comes with the following items:
▪ Apollo4 Blue Plus (KBR) Evaluation Board (EVB) revision 1
▪ USB Type C cable
▪ Four adhesive-backed rubber feet
▪ Extra jumpers
Caution: The EVB has components loaded on the back of the board. Care should be taken to not damage
these components. The included rubber feet should be applied to the bottom of the board to prevent direct
contact between the components and a desk surface.
The EVB comes with jumpers pre-configured for default operation. Also, it has been pre-programmed with
the FreeRTOS Fit example program. To start EVB program execution, connect the USB-C cable from a
USB port on a PC to the J-Link USB connector (J6) on the EVB, and turn on the power switch (SW4). The
blue LED under the power switch should illuminate.
To observe program execution, do the following steps:
▪ Start a Bluetooth explorer application such as LightBlue Explorer on a mobile phone or other device that
can serve as a Bluetooth host device.
▪ If diagnostic message are desired, start a SWO session by bringing up a Segger J-Link SWO Viewer
(see Software Development Tools section for link to Segger tools download site). For “device” select
“AMA4B2KP-KBR” and set SWO clock to 1000 KHz.
▪ Reset the board by pressing switch SW3.
▪ After reset, the Apollo4 Blue Plus (KBR) will start advertising and Bluetooth traffic will appear in the SWO
viewer. One of the messages in the SWO viewer will indicate that this device called “Fit” (EVB) is adver-
tising.
▪ The device “Fit” will appear in the list of devices in the host application (App). By selecting it, the host will
connect to the “Fit” device on the EVB.
▪ The App and Fit will exchange several commands and responses (events) until the SWO message
reports that “Fit got evt 41).
The AmbiqSuite SDK provides many example programs that may be run on the EVB. To run these
examples, download the SDK via the link provided above and select any of the pre-built examples in the
SDK at /boards/apollo4p_blue_kbr_evb/examples.
Apollo4 Blue Plus (KBR) EVB Quick Start Guide
QS-A4BP_KBR-1p0 Page 8 2022 Ambiq Micro, Inc.
All rights reserved.
5. Overview of the Apollo4 Blue Plus (KBR) EVB
The Apollo4 Blue Plus (KBR) EVB, version 1, features Arduino-compatible headers and an integrated J-
Link debugger:
Figure 1. Apollo4 Blue Plus (KBR) EVB
Figure 2. Apollo4 Blue Plus (KBR) Plus EVB - Major Top Side Components
Apollo4 Blue Plus (KBR) EVB Quick Start Guide
QS-A4BP_KBR-1p0 Page 9 2022 Ambiq Micro, Inc.
All rights reserved.
Figure 3. Apollo4 Blue Plus (KBR) Plus EVB - Major Bottom Side Components
Figure 4. Apollo4 Blue Plus (KBR) Plus EVB - Top Side Parts Location
Apollo4 Blue Plus (KBR) EVB Quick Start Guide
QS-A4BP_KBR-1p0 Page 10 2022 Ambiq Micro, Inc.
All rights reserved.
Figure 5. Apollo4 Blue Plus (KBR) Plus EVB - Bottom Side Parts Location
The EVB has these features:
▪ Apollo4 Blue Plus (KBR) SoC in the BGA package (AMA4B2KP-KBR)
▪ Low power reference design
▪ Multiple power/clock options
▪ USB Type C connector for power/download/debug
▪ USB Type C connector for power/data to Apollo4 Blue Plus (KBR)
▪ On-board PCB (MIFA) antenna
▪ Segger J-Link debugger
▪ Debugger-in port (J13) (SWD or ETM)
▪ Three user-controlled LEDs
▪ Two push buttons for application use, plus a reset push button
▪ Power slide switch with LED power indicator
▪ Five Arduino-style headers (J7, J9-J12) for pin/power access to a shield board
▪ Test points for power measurements
▪ High-speed connector (J8 - QSH-030-01-L-D-A) for interfacing to displays and/or high-speed memory
▪ RF switch/connector (Murata MM8430-2610RA1) for BLE PHY testing
▪ Multiple solder-bridge options for power supply flexibility and peripheral access options
▪ 3.5 mm audio jack (SJ-435107) for evaluating low-power analog audio interface
▪ CE Mark and RoHS compliant
Caution: The EVB has components loaded on the back of the board. Care should be taken to not damage
these components.
5.1 Secure Boot on the Apollo4 Blue Plus (KBR) SoC
Apollo4 Blue Plus (KBR) SoC parts from the Ambiq factory are preprogrammed with a Secure Bootloader
and an uninitialized Customer Info Space, 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 Apollo4
Blue Plus (KBR) EVB is shipped with the INFO0 configuration pre-programmed with optimal settings for
the EVB layout:
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