Detailed explanation of LPCXpresso54628, a low-power MCU based on ARM Cortex-M4 core

Figure 1. LPCXpresso54628 block diagram

图2. LPCXpresso546xx电源,时钟和调试连接图

LPCXpresso54608/54618/54628评估板

The LPCXpresso™ family of boards provides a powerful and flexible development system for NXP’s LPC Cortex®-M family of MCUs. They can be used with a wide range of development tools, including NXP’s MCUXpresso IDE. The LPCXpresso54608 (OM13092), LPCXpresso54618 (board provided as part of the OM13094 CAN-FD Kit) and LPCXpresso54628 (OM13098) share the same design and have been developed by NXP to enable evaluation of and prototyping with the LPC546xx family of MCUs. There is no functional difference between these boards except the (1) functionality of the LPC546xx device installed, and (2) that the LPC54618 board included in the OM13094 does not include the LCD panel. All boards use a BGA180 package.

Note that the LPCXpresso54628 board features an LPC54628 device which has a superset of functionality compared to the LPC54608 and LPC54618. This means code written for the LPC54608 and LPC54618 can run unchanged on the LPC54628. The LPC54628 is capable of running at up to 220MHz, but requires a different power library (from the MCUXpresso SDK) than the other devices in order to run at this clock speed. Initially this library will be available as a separate download until it is fully integrated into the SDK in Q4 2017.

The schematics show that the board was designed for either 1.8 V or 3.3 V build configurations, but all production boards are built in the 3.3 V configuration.

LPCXpresso546xx评估板主要特性:

• On-board, high-speed USB based, Link2 Debug Probe with CMSIS-DAP and SEGGER J-Link protocol options:  Link2 probe can be used with on-board LPC546xx or external target.
 UART and SPI port bridging from LPC546xx target to USB via the on-board Debug Probe.
 Support for external Debug Probe.
• 3 x user LEDs
• Target Reset, ISP (3) and user buttons
• Expansion options based on popular standards:  Arduino UNO compatible expansion site with additional LPCXpresso V3 standard connections
 PMod™ compatible expansion port
 Host connection / general purpose expansion port
• On-board 3.3V regulator with external power supply options.
• Built-in power consumption measurement for target LPC546xx MCU.
• 128Mb Micron MT25QL128 Quad-SPI flash.
• 128Mb Micron MT48LC8M16A2B4 SDRAM.
• Knowles SPH0641LM4H digital microphone.
• Full size SD/MMC card slot.
• NXP MMA8652FCR1 accelerometer.
• Stereo audio codec with line in/out.
• High and full speed USB ports with micro A/B connector for host or device functionality.
• 10/100Mbps Ethernet (RJ45 connector).
• 272x480 color LCD with capacitive touch screen.

Figure 3. Bottom view of the LPCXpresso546xx evaluation board

Figure 4. LPCXpresso546xx evaluation board key features

Figure 5. LPCXpresso546xx evaluation board schematic (1)

Figure 6. LPCXpresso546xx evaluation board schematic (2)

Figure 7. LPCXpresso546xx evaluation board circuit diagram (3)

Figure 8. LPCXpresso546xx evaluation board circuit diagram (4)

Figure 9. LPCXpresso546xx evaluation board circuit diagram (5)

Figure 10. LPCXpresso546xx evaluation board circuit diagram (6)

Figure 11. LPCXpresso546xx evaluation board schematic (7)

Figure 12. LPCXpresso546xx evaluation board schematic (8)

Figure 13. LPCXpresso546xx evaluation board circuit diagram (9)

Figure 14. LPCXpresso546xx evaluation board circuit diagram (10)

Figure 15. LPCXpresso546xx evaluation board circuit diagram (11)

Figure 16. LPCXpresso546xx evaluation board circuit diagram (12)

Figure 17. LPCXpresso546xx evaluation board schematic (13)