The motherboard provides the necessary hardware to enable:
Full digital connectivity with external hardware using UART, SPI, GPIO, and I2C
USB-based debugging capabilities using the SEGGER J-Link on-board debugger
USB-based UART communication with the host PC using a Future Technology Devices International (FTDI) chipset
that converts UART to USB signal.
Which daughterboards are supported?
All daughterboards of the DA1453x family are compatible with the DA14531 DEVKT-P Motherboard. This motherboard has now been superseded with the new model DA1453x DEVKT-P Motherboard. The main difference is the new and more accurate power measurement circuitry. When you order DA14535 Development Kit, the new motherboard is shipped by default.
Figure 3 shows the DA14531-00 daughterboard connected to the DA14531 DEVKIT-P Motherboard.
The DA1453x development box includes a Power Measurement Module (see J7 in Figure 9). PMM2 is an external add-on board that connects to the DEVKIT-P Motherboard via connector J7.
This module offers a range of features, including:
A full-scale measurement range of 500 mA at 3.3 V
High-precision measurements down to 1 uA.
Another significant difference between the DA14531 and DA1453x DEVKIT-P Motherboard is the debugger. In the DA1453x DEVKIT-P Motherboard, the debugger U25 has been replaced with RA4M2. Additionally, it is worth noting that Mikrobus1, which was previously found on the DA14531 DEVKIT-P Motherboard, is no longer included in the DA1453x DEVKIT-P Motherboard. This change is due to the incompatibility between this motherboard and DA1458x family.
SW1 must be set to position H (Buck) (see Figure 5) and the selection on the DEVKIT-P motherboard should be done on J4 (see Figure 7).
Power Mode Selection
The Power mode selection should be done on J4 on DA1453x DEVKIT-P Motherboard considering the jumper structure printed on the motherboard, see Figure 9.
Make sure to configure this jumper for BUCK mode while downloading the program. Note that the J4 configuration has been made by default for BUCK mode and this note is only related to downloading step.
R-Multiplexer
The DA14531 daughterboards come with a default resistors (R-Multiplexer) configuration. This is a group of 16 resistors of 0 Ω that can be placed/removed in order to hardwire various peripherals to the DA14531 pins (from J1 or J2 ) as desired.
Extra Guideline
Application Note (AN-B-073) contains guidelines to implement a RFIO filter that serves to reduce conducted and
radiated spurious emissions in Bluetooth® low energy applications.
4.4. Configure the DEVKIT-P Motherboard with Jumper Settings
Figure 7 shows the layout of the headers and its descriptions on the DA1453x DEVKIT-P Motherboard in Table 2.
DCDC configuration: select either Boost, Buck, or Bypass mode
Attention
J2 header (see Figure 7) contains all the pins’ names near them. These names are specific for the DEVKIT-P motherboard and they do not have the same meaning on the chips (for example, P20 corresponds to P00). The reason is that DA14531 DEVKT-P Motherboard can be used for the DA143x SoC and the DA1458x family of SoCs. DA1453x SoC has less pins than the DA1458x SoCs.
Figure 8 shows the layout of the header J1 on DA14531 DEVKIT-P Motherboard.
The DEVKIT-P Motherboard comprises essential components for seamless development:
FTDI Chipset U12 (FT2232HL): This chipset plays a crucial role in establishing USB communication with the development host. The FT2232HL acts as a USB to UART bridge, facilitating seamless connectivity between your PC and the DA14531 SoC UART port. It also interfaces with the current sense circuitry through an SPI connection with ADC U8.
Embedded J-Link Debugger U4 (SAM3U2CA): Included in the kit is an embedded J-Link debugger identified as U4 (SAM3U2CA). This debugger serves as an invaluable tool for debugging your development projects. It operates on a 3.3 V power supply sourced from U5 and is activated by the PWR_ENABLE signal.
Before connecting the ProDev Kit to the host PC, ensure that the Development Kit Pro and the desired daughterboard module are properly connected. You can choose between two power sources: 3.3 V (via USB: USB1) or VDD (a coin cell). When using a mini-USB cable, there is no need for an additional battery. To establish a connection, simply attach a standard mini-USB cable to the USB1 connector. For visual reference, see Figure 13.
