TIDUF98 October 2024
The MSPM0L228 and ADS131M043 are powered from an external power supply by connecting the 3.3V and GND to header J4.
Header or Header Option Name | Type | Main Functionality | Valid Use-Case | Comments |
---|---|---|---|---|
J1 | 10-pin header | Programming of MSPM0L2228(WARNING) | Apply 10-pin cable from XDS110 Debugger on a TI Launch Pad to flash MSPM0+ MCU. |
TI MSPM0G3507 or MSPM0L1306 LaunchPads provide XDS110 debug functionality for external targets / TI MCU devices. Since this header and the XDS110 are not isolated, do not connect to this header when running off Mains and Mains is not isolated. |
J2 | 2-pin Terminal block |
Line and Neutral connections (WARNING) | Connect Line and Neutral | Connect High Voltage for Line and Neutral from Test equipment here |
J4 | 2-pin jumper header | External power supply(WARNING) | Header with GND and 3V3 pins, marked with text. | Used for testing, non-isolated 3V3 and GND can be also provided from TI LaunchPad. |
J5, J6 | 1-pin headers | Connections for CR2032 battery backup (WARNING) | VBAT and GND. | These are two pins: GND and VBAT, so a battery can be soldered to the PCB. |
J11 | 10-pin 2-row connector | JTAG: MSPM0+ programming header (WARNING) | Connect an external XDS110 debugger to this connector to program the MSPM0L2228 MCU. | |
J3 | 2-pin header | Active energy pulses (WARNING) | Probe here for active energy pulses based on the shunt active power readings. This header has two pins: GND and ACT, which is where the active energy pulses are actually output. | This header is not isolated from AC mains, so do not connect measuring equipment here (especially when referencing the system from line). |
J12 | 2-pin header | Reactive energy pulses (WARNING) | Probe here for active energy pulses based on the shunt active power reading. This header has two pins: GND and REACT, which is where the reactive energy pulses are actually output. | This header is not isolated from AC mains, so do not connect measuring equipment here (especially when referencing the system from line). |
J15 | 4-pin terminal block | RS-485 connection | Connection point for RS-485 | To view the GUI using RS-485, connect the USB to RS-485 adapter here. 3V3 must be provided externally on pin 4 of this header. Pin 2 of this header is the RS-485 ground, pin 3 is the B bus I/O line, and pin 4 is the A bus I/O line. |