ambiq micro Apollo1 EVB User manual

Apollo EVB Quick Start Guide
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Apollo1 EVB
Quick Start Guide
Doc. ID: QS-A1-1p00
Revision 1.0
Jun 2017

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Table of Content
Introduction ................................................................................................................. 5
Document Revision History......................................................................................... 5
Overview of the Apollo1 EVB...................................................................................... 6
Debug Interface .......................................................................................................... 7
Software Development Tools for the Apollo1 EVB ..................................................... 9
Power Supply Options and Measuring Current......................................................... 10

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List of Figures
Apollo1 EVB................................................................................................................ 6
Apollo1 EVB using On-board J-Link Debugger........................................................... 7
Apollo1 EVB’s Cortex DEBUG IN Header (J1) ........................................................... 7
Apollo1 EVB’s DEBUG OUT Header (J2)................................................................... 8
Voltage Selection on Header P19............................................................................. 10
Header P19 Configured for 3.3V Operation - No Current Measurement .................. 11
Header P19 Configured for 3.3V Operation - With Current Measurement ............... 11

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List of Tables
Document Revision History......................................................................................... 5
Jumper Configuration for Power Selections.............................................................. 10

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1. Introduction
This document provides guidance in setting up the Apollo1 Evaluation Board (EVB), revision 1.0, to get
started executing code examples, measuring power consumption in various configurations, and beginning
software development.
2. Document Revision History
Rev # Date Description
1.0 Jun 2017 Document initial public release
Table 1: Document Revision History

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3. Overview of the Apollo1 EVB
The Apollo1 EVB features Arduino-compatible headers and an integrated J-Link debugger:
Figure 1. Apollo1 EVB
The EVB has these additional features:
▪Low power reference design
▪Apollo1 MCU in the BGA package (APOLLO512-KBR)
▪Multiple power/clock options
▪Micro USB connector for power/download/debug
▪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
Segger
J-Link
Adapter

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4. Debug Interface
Figure 2 shows the Apollo1 EVB set up for standard debug using the on-board J-Link debugger and on-
board power supply configured for 3.3V.
Figure 2. Apollo1 EVB using On-board J-Link Debugger
The debug interface is supported by standard J-Link drivers from Segger. Please refer to “Software
Development Tools for the Apollo1 EVB” on page 9 for more details on J-Link debug support.
This EVB also supports the use of an external Cortex SWD debug interface through a standard 10-pin
debug header (DEBUG IN - J1) as shown in Figure 3.
Figure 3. Apollo1 EVB’s Cortex DEBUG IN Header (J1)

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No jumper changes are required to use an external debug adapter. Simply connect the external debug
adapter with a 10-pin ribbon cable connector to the “DEBUG IN” header.
The EVB also offers the ability to be used as a J-Link debug adapter for any target board that has an
Apollo family MCU (Apollo1 or Apollo2).
Figure 4. Apollo1 EVB’s DEBUG OUT Header (J2)
To utilize this functionality, use a 10-pin low-pitch standard debug connector to connect the “DEBUG OUT”
header (J3) on the EVB to the debug header on the target board. The EVB will automatically detect when
the “DEBUG OUT” header is connected to another target board and reconfigure the integrated J-Link to
connect to this external board rather than the onboard Apollo1.
Note: A voltage on pin 1 of the J2 header is required for the above mentioned automatic switch to occur.
Also, if the target VDD doesn't match the onboard voltage (either 3.3V or 2.1V), and to avoid possible
voltage level conflicts on the debug I/O port, VDDIO of the J-Link processor may need to be changed to the
target voltage by cutting SB5 and shorting SB6.
.

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5. Software Development Tools for the Apollo1 EVB
The standard Segger J-Link debug interface is used on the Apollo1 EVB. Please install the latest Beta
Segger J-Link software, and configure your preferred development IDE (Keil, IAR, or Eclipse) to use J-Link
debug interface.
Links to development tools that support Apollo1:
▪SEGGER J-Link Software (6.14 or newer): https://www.segger.com/downloads/jlink
▪KEIL uVision MDK523 or newer: https://www.keil.com/demo/eval/arm.htm
▪New Keil Pack (Also used by Eclipse) at: http://www.keil.com/dd2/pack/#/third-party-download-dialog
▪IAR Version 7.80.4 or 8.10.1 or newer: https://www.iar.com/iar-embedded-workbench/tools-for-arm/arm-
cortex-m-edition/
Regardless of preferred IDE, please install the Segger J-Link software. All three of the above development
environments support J-Link, but you must have the latest J-Link software installed. Most alternate
development environments also are supported by J-Link.
Please refer to the AmbiqSuite Getting Started Guide (AMSDKGS) for more details on setting up
development IDEs to use J-Link.

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6. Power Supply Options and Measuring Current
There are three power supply options for the Apollo1 EVB:
▪Operate at 3.3V as provided by the onboard power supply
▪Operate at 2.1V as provided by the onboard power supply
▪Provide externally supplied power
Figure 5 shows header P19 which is used to select a power configuration through jumper installations, as
well as the option to measure the supply current to the MCU with an ammeter. Solder bridge SB15 can be
filled instead of jumpering from pin 1 to pin 2 if current measuring is of no interest.
Figure 5. Voltage Selection on Header P19
Table 2 shows valid jumper configurations for P19. All other configurations are invalid. Note that a jumper
across pins 7 and 8 is not necessary and does not do anything - the pins are available only for easy access
to ground.
Table 2: Jumper Configuration for Power Selections
Jumper
1-2
Jumper
3-4
Jumper
5-6 Power Source
In In Out 3.3V operation from internal regulator
In In In 2.1V operation from internal regulator
Out In Out Intended for current measuring across pins 1 and 2
during 3.3V operation from internal regulator
Out In In Intended for current measuring across pins 1 and 2
during 2.1V operation from internal regulator
In Out Out Externally-provided supply voltage within the allowable
range (1.8-3.8V) on pin 3 or 5
Out Out Out
Intended for current measuring across pins 1 and 2
during externally-provided supply voltage within the
allowable range (1.8-3.8V) on pin 3 or 5

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As an example for setting the jumpers on P19, Figure 6 shows the EVB configured for 3.3V operation with
jumper across VDD_PS and VDD_MCU for no current measurement.
Figure 6. Header P19 Configured for 3.3V Operation - No Current Measurement
Figure 7 shows the EVB configured for 3.3V operation with current measuring leads across VDD_PS and
VDD_MCU for current measurement.
Figure 7. Header P19 Configured for 3.3V Operation - With Current Measurement

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