TMDSCNCD280039C

EVAL BOARD FOR TMS320F280039C

ABSTRACT

The F280039C controlCARD (TMDSCNCD280039C) from Texas Instruments (TI) provides a great way to learn and experiment with F28003x devices. The F28003x devices are members of TI’s C2000™ family of microcontrollers (MCUs). This 120-pin controlCARD is intended to provide a well-filtered robust design that is capable of working in most environments. This document provides the hardware details of the F280039C controlCARD and explains the functions, locations of jumpers, and connectors present on the board.

1 Introduction

Each controlCARD comes with a Hardware Developer’s Kit, which is a full set of files necessary to evaluate and develop with a C2000 device. These files include:

• Schematics – Designed in Altium

• Bill of Materials (BOM)

• Layout PCB files - Designed in Altium

• Gerber files

The Hardware Developer's Kit for the controlCARD can be found in the C2000Ware at the following location:

•\c2000\C2000Ware_x_xx_xx_xx\boards\controlCARDs\TMDSCNCD280039C\Rx_x

2 Hardware Quick Setup Guide

The controlCARD can be completely powered and operated from the USB-C connector. In this stand-alone mode the on-board isolated power supply will provide power to the F280039C device; no additional hardware is required. Optionally, an external 5-V supply can be provided to power the F280039C device. For a detailed explanation of the hardware configuration, see Section 4.3.

3 Errata

Current revision of controlCARD as of 5/3/2021: PCB rev - E1, ASSY rev - none.

3.1 Warnings, Notes, and Errata

The TMDSCNCD280039C evaluation kit ships with a USB cable and is designed to be powered via USB. However, in extreme cases, the board/controlCARD may require more power than the 5 V @ 500 mA (USB 3.0 - 900 mA) that a computer’s USB port can provide. This is especially true when additional circuitry has been added to the TMDSHSECDOCK. In such cases, it is recommended to use an external 5-V power supply (2.5-mm inner diameter x 5.5-mm outer diameter) and plug it into J1 on the TMDSHSECDOCK. A compatible supply is:

• Phihong PSAC05R-050(P)-R-C2 + Phihong RPBAG

5-V power suppy instabilty may lead to device resets

The 5-V rail on the TMDSCNCD280039C controlCARD can be powered from an on-board USB connector or from a baseboard like the TMDSHSECDOCK. A switch device on the controlCARD automatically selects the 5-V input power source for the controlCARD without the need for user configuration.

A loss of power or glitching on the baseboard 5-V power source can cause the automatic switch to disconnect from both power sources for several milliseconds. This momentary loss of power may cause a brownout condition on the MCU, triggering a device reset. To avoid this condition, ensure that the baseboard power supply remains at 0 V or 5 V during code execution.

3.2 Warnings About Specific controlCARD Revisions

MCU100E1

• TP4 is incorrectly labeled as 5V5 on the front side of the controlCARD. TP4 corresponds to device ground (GND).

• TP1 is incorrectly labeled as device ground (GND) on the front side of the controlCARD. TP1 corresponds to the HSEC 5.0-V input.

• The TPD6E05U06RVZR ESD protection devices (U5, U6, U7, and U8) are not populated on the controlCARD. Take the necessary precautions to protect the ADC channels on the controlCARD from ESD and overvoltage damage.

• See warning above about power supply stability

MCU100A

• See warning above about power supply stability

4 Getting Familiar With the controlCARD

4.1 F280039C controlCARD Features

• F280039C Microcontroller – High-performance C2000 microcontroller is located on the controlCARD.

• 120-pin HSEC8 Edge Card Interface – Allows for compatibility with all of C2000’s 180-pin controlCARDbased application kits and controlCARDs. Compatibility with 100-pin controlCARDs can be accomplished using the TMDSADAP180TO100 adapter card (sold separately).

• Built-in Isolated JTAG Emulation – An XDS110 emulator provides a convenient interface to Code Composer Studio™ without additional hardware. Flipping a switch allows an external JTAG emulator to be used.

• Built-in Isolated Power Supply – Passes the 5-V supply from the USB-C connector through an isolation barrier. Allows for the controlCARD to be completed powered and operated from the USB-C connector. The F280039C is fully isolated from the USB port.

• Automatic Power Supply Switch – The controlCARD automatically switches to external 5-V power when present. No additional configuration is required.

• Connectivity – The controlCARD contains connectors that allow the user to experiment with isolated universal asynchronous receiver/transmitter (UART)/SCI with the F280039C MCU.

• Key Signal Breakout – Most GPIO, analog-to-digital converter (ADC), and other key signals routed to hard gold connector fingers.

• Robust Power Supply Filtering – Single 5-V input supply powers an on-card 3.3-V LDO. All MCU inputs are then decoupled using LC filters near the device.

• ADC Clamping – ADC inputs are clamped by protection diodes.

• Anti-Aliasing Filters – Noise filters (small RC filters) can be easily added on ADC input pins.

4.2 Assumed Operating Conditions

This kit is assumed to run at standard room conditions. Standard ambient temperature and pressure (SATP) with moderate-to-low humidity is assumed.

4.3 Using the controlCARD

In order for the controlCARD to operate, the controlCARD’s MCU must be powered. This is can be done through the USB-C connector on the controlCARD or by inputting 5 V through the HSEC connector via an accompanying baseboard. For example, if using a TMDSHSECDOCK docking station baseboard, 5-V DC should be input into the docking station’s J1 or J17. Then, S1 needs to be toggled to the appropriate position.