ambiq micro Apollo4 Blue EVB 빠른 시작 매뉴얼 - 페이지 16

{카테고리_이름} ambiq micro Apollo4 Blue EVB에 대한 빠른 시작 매뉴얼을 온라인으로 검색하거나 PDF를 다운로드하세요. ambiq micro Apollo4 Blue EVB 20 페이지. Evb display kit
ambiq micro Apollo4 Blue EVB에 대해서도 마찬가지입니다: 빠른 시작 매뉴얼 (18 페이지)

Apollo4 EVB Quick Start Guide
As shown in Figure 10 and Figure 11, headers J2 and J3 provide easy access to the various system and
chip-level power supplies present on the EVB. These can be used in conjunction with the above solder-
bridges to measure current, monitor voltage, or provide externally generated power to each specific rail.

Figure 10. Apollo4 EVB Voltage Test Points on Header J2

Figure 11. Apollo4 EVB Voltage Selection on Header J3

8.1
Measuring Current
If the user wants to use a separate power supply for the EVB, then SB3 shown in Figure 7 should be cut,
and either SB5 should be shorted or pins 3 and 4 of J3 should be jumped. The external power rail can be
applied to VDD_EXT on J3, pin 3. Consult the electrical specifications in the Apollo4 Datasheet for the
acceptable operating range for VDD_MCU.
Note: The J-Link I/O voltage should be set to the new VDD_IO of the chip, and therefore SB19 (not shown
in Figure 7) should be opened and SB20 should be shorted (soldered).
Use of the EVB using the on-board SoC supply may be restored by disconnecting the external supply (if
connected) and either shorting SB3 once again or jumping between pins 1 and 2 of J3. The J-Link I/O
voltage also should be restored.
QS-A4-4p1
Page 16
2023 Ambiq Micro, Inc.
All rights reserved.