SLVUDH9 March   2026

 

  1.   1
  2.   Description
  3.   Get Started
  4.   Features
  5.   Applications
  6.   6
  7. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Specification
    4. 1.4 Device Information
  8. 2Hardware
    1. 2.1 Hardware Description
    2. 2.2 Power Requirements
      1. 2.2.1 Power Tree
        1. 2.2.1.1 On-Board Power Supplies
        2. 2.2.1.2 Analog Voltage Reference
        3. 2.2.1.3 Alternative Power Sources
          1. 2.2.1.3.1 USB Isolation
          2. 2.2.1.3.2 External Power Connections
          3. 2.2.1.3.3 5V Step-Up Converter
      2. 2.2.2 Power Indicator LEDs
    3. 2.3 Reset
    4. 2.4 Clock
    5. 2.5 Interfaces
      1. 2.5.1 User LEDs
      2. 2.5.2 MCAN
      3. 2.5.3 Encoder Connectors
    6. 2.6 Debug Interface
      1. 2.6.1 XDS110 Debug Probe
      2. 2.6.2 Virtual COM Port
      3. 2.6.3 ARM 10-Pin Debug Header
    7. 2.7 Test Points
    8. 2.8 BoosterPacks
  9. 3Additional Information
    1. 3.1 Revision E1 Appendix
      1. 3.1.1 Revision E1 Known Issues
    2. 3.2 Revision E2 Appendix
      1. 3.2.1 Revision E2 Changes from E1
    3. 3.3 Trademarks

3.1.1 Revision E1 Known Issues

This section details the following issues and workarounds for Revision E1 of the LP-AM13E230.

Note: Revision E1 boards can be identified by the silkscreen text 'MCU178E1' on the back side of the PCB.

Non-default Bootloader Interfaces

The AM13E230x Bootloader (also referred to as the BSL) provides a method to program and verify the device flash memory through UART, I2C, and MCAN serial interfaces. The device boot ROM configures specific pins for this interface that have non-default connections on the LaunchPad. The following workarounds solve this issue:

UART Pins

AM13E230x pins PA0 and PA1 are configured by the boot ROM for UART TX (UC4_TX_SDA_PICO) and UART RX (UC4_RX_SCL_SCLK) respectively. To connect the UART pins with the on-board XDS110 for booting over UART and interfacing with the XDS110 debug probe:

  1. Remove the shunt jumpers on the J12 RX/TX headers
  2. Connect/solder a jumper wire from J4-38 (PA0) to the XDS110 side of the J12-TX header
  3. Connect/solder a jumper wire from J4-39 (PA1) to the XDS110 side of the J12-RX header
LP-AM13E230 LP-AM13E230 Rev E1 UART Fix Figure 3-1 LP-AM13E230 Rev E1 UART Fix

I2C Pins

AM13E230x pins PA22 and PA23 are configured by the boot ROM for I2C SDA (UC2_TX_SDA) and I2C SCL (UC2_RX_SCL) respectively. The designated BoosterPack pin locations for I2C signals are J1-9 (I2C SCL) and J1-10 (I2C SDA). On Revision E1 of the LP-AM13E230, PA22 is routed to J4-34 and PA23 is routed to J4-35.
LP-AM13E230 LP-AM13E230 Rev E1 I2C Fix Figure 3-2 LP-AM13E230 Rev E1 I2C Fix

MCAN Pins

AM13E230x pins PA11 and PA12 are configured by the boot ROM for MCAN RX (MCAN0_RX) and MCAN TX (MCAN0_TX) respectively. Because PA12 is not accessible at a board-level header, the BSL configuration can be modified to change the default MCAN pins to PA25 for MCAN0_TX and PA24 for MCAN0_RX. Any MCAN0-configurable pin can be used in the BSL configuration.

Non-Default BSL INVOKE Pin

The AM13E230x Boot ROM configures pin PA6 as the input GPIO for the BSL Invocation signal. Revision E1 of the LP-AM13E230 connects pin PA3 to the BSL invoke circuit, which can be triggered from either an output IO from the XDS110 or from the BSL INV push button (S5). To workaround this issue there are two options:

  1. Software: Re-configure the BL_INVOKE_PIN in the BSL to PA3
  2. Hardware:
    1. XDS110 IO: Remove the shunt jumper on the J12 BSL INV header and connect/solder a jumper wire from J3-30 to the XDS110 side of the J12 BSL INV header
      LP-AM13E230 XDS110 - BSL INVOKE Fix Figure 3-3 XDS110 - BSL INVOKE Fix
    2. Pushbutton IO: Remove the shunt jumper on the J12 BSL INV header and connect/solder a jumper wire from J11 (switch side) to J3-30
      LP-AM13E230 Pushbutton - BSL INV Fix Figure 3-4 Pushbutton - BSL INV Fix

No Pull-up Resistors on Default I2C Nets

The default I2C nets configured on PB6 (J1-9) and PA11 (J1-10) do not have pull-up resistors present on this revision of the PCB. If using these pins for I2C communication, the external PCB will require pull-up resistors on these nets.