Texas Instruments Stellaris LM3S818 User manual

Stellaris® LM3S818 controlCARD Module User’s Manual
November 17, 2011 3
Table of Contents
Chapter 1: Stellaris® LM3S818 controlCARD Module Overview..................................................................6
MDL-LM3S818CNCD Kit Contents.....................................................................................................................6
Compatibility Matrix ............................................................................................................................................7
Using the LM3S818 controlCARD Module .........................................................................................................7
Features..........................................................................................................................................................7
Board Dimensions...........................................................................................................................................7
Chapter 2: Hardware Description....................................................................................................................8
Functional Description ........................................................................................................................................9
Microcontroller and Interfaces (Schematic Page 2)........................................................................................9
Debug Interface, Virtual COM Port, and Isolators (Schematic Page 3)........................................................11
Chapter 3: Software Development ................................................................................................................13
Software Description.........................................................................................................................................13
Source Code.....................................................................................................................................................13
Tool Options .....................................................................................................................................................13
Programming the MDL-LM3S818CNCD controlCARD Module........................................................................14
Appendix A: Schematics................................................................................................................................15
Appendix B: Component Locations..............................................................................................................19
Appendix C: References ................................................................................................................................20

4November 17, 2011
List of Figures
Figure 1-1. MDL-LM3S818CNCD controlCARD Module...................................................................................6
Figure 2-1. Block Diagram.................................................................................................................................8
Figure 2-2. controlCARD Module Isolation ......................................................................................................12
Figure 2-3. controlCARD Module Jumpers......................................................................................................12
Figure B-1. Top-Side Component Location......................................................................................................19
Figure B-2. Bottom-Side Component Location ................................................................................................19

Stellaris® LM3S818 controlCARD Module User’s Manual
November 17, 2011 5
List of Tables
Table 1-1. Compatibility Matrix.........................................................................................................................7
Table 2-1. Signal Table ....................................................................................................................................9
Table 2-2. COM Port Pin Connections...........................................................................................................11

November 17, 2011 6
Stellaris® LM3S818 controlCARD Module Overview
The Stellaris® LM3S818 controlCARD module is a DIMM form-factor module that can be used
standalone or with a range of baseboards to accelerate evaluation and development.
Texas Instruments offers a range of controlCARD baseboards for motor and power-control
application. In most cases. these are available as complete kits that include a controlCARD
module and a baseboard. The Stellaris MDL-LM3S8

Stellaris® LM3S818 controlCARD Module User’s Manual
November 17, 2011 7
• Documentation specific to each supported baseboard
• CrossHairs control GUI Windows application
Tools CD(s)
–Texas Instruments' Code Composer Studio™ IDE
Compatibility Matrix
Table 1-1 shows which baseboards are compatible with the MDL-LM3S818CNCD controlCARD
module.
Using the LM3S818 controlCARD Module
To start using the controlCARD module as a standalone module, see the MDL-LM3S818CNCD
Read Me First document.
To start using the controlCARD module in conjunction with a Texas Instruments’ controlCARD
baseboard, see the Read Me First do

November 17, 2011 8
Hardware Description
In addition to an LM3S818 microcontroller, the controlCARD module includes some simple
multiplexing logic and an integrated Stellairs in-circuit debug interface (ICDI). This chapter
describes how the hardware interfaces to the microcontroller. Figure 2-1 shows the controlCARD
module block diagram.
Figure 2-1. Block Diagram
Stellaris
®
LM3S818
Microcontroller
Stellaris®
In-Circuit
Debug
Interface
(LM3S3601)
PWM0..5
USB

Stellaris® LM3S818 controlCARD Module User’s Manual
November 17, 2011 9
Functional Description
This section provides a detailed description of the LM3S818 controlCARD module hardware.
Microcontroller and Interfaces (Schematic Page 2)
LM3S818 Microcontroller
The Stellaris LM3S818 is an ARM Cortex-M3-based microcontroller with 64-KB flash memory, 8-
KB SRAM, 50-MHz operation, Motion control PWMs, and a wide range of other peripherals. Refer
to the LM3S818 data sheet for complete device details.
The LM3S818 microcontroller is factory-programmed with a simple quickstart demo program. The
quickstart program resides in on-chip flash memory and runs each time power is applied, unless
the quickstart has been replaced with a user program.
DIMM Edge Connector
Most of the Stellaris microcontroller GPIO signals are routed to the DIMM edge connector.
The controlCARD module is compatible with standard DIMM sockets, such as Molex Part number
87630-1001.
User LEDThe board also has a green User LED connected to GPIO PB6. This GPIO signal is also used to
control the multiplexing of the CCP (Timer) signals and may not be available in some baseboards
applications.
Signal Multiplexing
The DRV8312 and DRV8301 baseboards have Hall-inputs on different DIMM pins. U11
multiplexes these signals under the control of GPIO PB6.

Hardware Description
10 November 17, 2011
Reset The RESET signal into the LM3S818 microcontroller connects to an R-C network (R1/C8) and to
the ICDI circuit for a debugger-controlled reset.
External reset is asserted (active low) under any one of these conditions:
Power-on reset
By the ICDI circuit when instructed by the debugger (this capability is optional, and may not be
supported by all debuggers).
46 CCP2 31(DRV8301),
36(DRV8312) CAP3 CAP3
11 CCP4 29 DAC_PWM1 DAC_PWM1
41 TRSTn 99 TRSTn TRSTn
40 TCK 48 TCK TCK
39 TMS 49 TMS TMS
38 TDI 97 TDI TDI
37 TDO 98 TDO TDO
17 U0Rx 43 GPIO-28
(spare SCI