DEMOAC MCF51AC256 Manual de instalación

DOC-0440-010, RED

Web Site: www.axman.com

Support: [email protected]

DEMOAC

Development Board for Freescale FLEXIS AC MCU Family

Supports:

MCF51AC256

MC9S08AC128

MC9S08AC60

MC9S08AC16

Hardware User Guide

DEMOAC USER GUIDE APRIL 10, 2008

CONTENTS

CAUTIONARY NOTES ..............................................................................................................4

TERMINOLOGY.........................................................................................................................4

FEATURES ................................................................................................................................5

REFERENCES ...........................................................................................................................6

GETTING STARTED..................................................................................................................6

APPLICATION DEVELOPMENT ...............................................................................................6

HARDWARE CONFIGURATION ...............................................................................................6

INTEGRATED BDM............................................................................................................... 6

BDM PORT CONNECTOR ............................................................................................... 7

POWER................................................................................................................................. 7

EXTERNAL POWER......................................................................................................... 7

BDM POWER.................................................................................................................... 8

POWER SWITCH – PWRSW............................................................................................ 8

VOLTAGE INDICATORS .................................................................................................. 8

PWR_SEL OPTION HEADER........................................................................................... 8

VX_EN OPTION HEADER................................................................................................ 9

MCU POWER........................................................................................................................ 9

MCUVDD......................................................................................................................... 10

VDDAD............................................................................................................................ 10

VSSAD............................................................................................................................ 10

VREFH............................................................................................................................ 10

VREFL............................................................................................................................. 10

RESET SWITCH ................................................................................................................. 11

RESET LED .................................................................................................................... 11

LOW VOLTAGE DETECT............................................................................................... 11

MEMORY ............................................................................................................................ 11

TIMING................................................................................................................................ 11

COMMUNICATIONS ........................................................................................................... 12

VIRTUAL COM PORT..................................................................................................... 12

COM_EN......................................................................................................................... 12

CAN PORT...................................................................................................................... 12

IIC PORT......................................................................................................................... 12

POTENTIOMETER.............................................................................................................. 13

USER PUSHBUTTON SWITCHES ..................................................................................... 13

USER LED’S ....................................................................................................................... 13

ACCELEROMETER .................................................................................................................13

ACCELEROMETER CONFIGURATION ............................................................................. 14

MCU_PORT ........................................................................................................................15

TROUBLESHOOTING..............................................................................................................16

DEMOAC USER GUIDE APRIL 10, 2008

INITIAL FLASH PROGRAMMING................................................................................... 16

FIGURES

Figure 1: BDM Connector ...........................................................................................................7

Figure 2: PWR Jack....................................................................................................................8

Figure 3: PWR_SEL Option Header ...........................................................................................9

Figure 4: VX_EN Option Header ................................................................................................9

Figure 5: USB_COM Option Header ........................................................................................12

Figure 6: Accelerometer Sensitivity Select Header...................................................................14

Figure 7: MCU_PORT Connector.............................................................................................15

TABLES

Table 1: OSC_SEL Option Header...........................................................................................11

Table 2: POT ............................................................................................................................13

Table 3: Push Button Switches.................................................................................................13

Table 4: User LED’s..................................................................................................................13

Table 5: ACC_OUT Option Header ..........................................................................................14

REVISION

Date Rev Comments

March 20, 2008 A Initial Release.

March 29, 2008 B Minor text corrections

April 3, 2008 C Remove references to 51JM128 MCU

April 10, 2008 D Updated Troubleshooting section to account for

power-cycling board when powered from USB BDM

DEMOAC USER GUIDE APRIL 10, 2008

CAUTIONARY NOTES

1) Electrostatic Discharge (ESD) prevention measures should be used when handling this

product. ESD damage is not a warranty repair item.

2) Axiom Manufacturing does not assume any liability arising out of the application or use of

any product or circuit described herein; neither does it convey any license under patent

rights or the rights of others.

3) EMC Information on the DEMOAC board:

a) This product, as shipped from the factory with associated power supplies and cables,

has been verified to meet with FCC requirements as a CLASS Aproduct.

b) This product is designed and intended for use as a development platform for hardware

or software in an educational or professional laboratory.

c) In a domestic environment, this product may cause radio interference in which case the

user may be required to take adequate prevention measures.

d) Attaching additional wiring to this product or modifying the product operation from the

factory default as shipped may effect its performance and cause interference with other

apparatus in the immediate vicinity. If such interference is detected, suitable mitigating

measures should be taken.

TERMINOLOGY

This development board applies option selection jumpers. Terminology for application of the

option jumpers is as follows:

Jumper on, in, or installed = jumper is a plastic shunt that fits across 2 pins and the shunt is

installed so that the 2 pins are connected with the shunt.

Jumper off, out, or idle = jumper or shunt is installed so that only 1 pin holds the shunt, no 2

pins are connected, or jumper is removed. It is recommended that the jumpers be placed

idle by installing on 1 pin so they will not be lost.

Cut-Trace – a circuit trace connection between component pads. The circuit trace may be

cut using a knife to break the default connection. To reconnect the circuit, simply install a

suitably sized 0-ohm resistor or attach a wire across the pads.

Signal names followed by an asterisk (*) denote active-low signals.

DEMOAC USER GUIDE APRIL 10, 2008

FEATURES

The DEMOAC provides a platform supporting a line of Freescale microcontrollers which are

part of the Flexis Continuum. Target microcontrollers mount on plug-in modules to support

quickly changing the target MCU. Available microcontrollers for the DEMOAC include; the

ColdFire V1 MCF51AC256, and the MC9S08AC128/60/16. Application development on the

DEMOAC is quick and easy with the integrated USB-BDM, sample software tools, and exam-

ples. An optional BDM_PORT port is also provided to allow use of an external BDM cable. An

80-pin MCU_PORT connector provides access to all IO signals on the target MCU. An ex-

panded feature set, including an E-Field sensor, is provided on the DEMOACEX board. The

DEMOACEX connects to the DEMOAC through the 80-pin MCU_PORT connector.

MCU Modules:

•MCF51AC256, 80LQFP

•256K bytes FLASH

•32K bytes RAM

•ColdFire V1 Core

•50.3 MHz bus

•MC9S08AC128/60/16

•128K/60K/16K bytes FLASH

•8K/2K/1K bytes RAM

•HCS08 Core

DEMOAC Features:

•Integrated, USB BDM

•ON/OFF Power Switch

•Power Input Select Option Header

•On-board 5V regulator

•Power from USB BDM

•Optional Power Sourced to

Connector J1

•4MHz XTAL Oscillator

•3-axis accelerometer

•LEDs – 4 User, 1 Power, 1 Reset

•Push button switches – 4 user, 1 Reset

•5K ohm POT

•Jumpers to disconnect User Features

•80-pin MCU PORT provides access to MCU signals

•4 20-pos pin-headers support plug-in MCU modules

•IIC Termination Select Header

DEMOAC Board Size: 5.0” x 4.0

DEMOAC USER GUIDE APRIL 10, 2008

REFERENCES

The following documents should be referenced during application development using the

DEMOAC. These documents are available on the MCF51JM128 and DEMOAC web pages

(http://www.freescale.com/coldfire).

DEMOAC_UG.pdf DEMOAC User Guide (this document)

DEMOAC_QSG.pdf DEMOAC Quick Start Guide

DEMOAC_SCH_A1.pdf DEMOAC Schematic

DEMOAC_Silk_A.pdf DEMOAC Top Silk

GETTING STARTED

To get started quickly, please refer to the DEMOAC Quick Start Guide. This quick start will il-

lustrate connecting the board to a PC, installing the correct version of CodeWarrior Develop-

ment Studio, and running a simple program.

APPLICATION DEVELOPMENT

CodeWarrior Development Studio for Microcontrollers, Special Edition is provided along with

the DEMOAC to support application development and debug. CodeWarrior provides an IDE

for application debug and an integrated FLASH programmer to load application code. Refer to

the CodeWarrior Development Studio User Guide further details.

HARDWARE CONFIGURATION

The DEMOAC board provides a development or evaluation platform for a line of AC Flexis mi-

crocontrollers; including the MCF52AC256, MC9S08AC128, MC9S08AC60, and

MC9S08AC16 MCU’s. Following are descriptions of the components and options provided on

the board.

Integrated BDM

The DEMOAC board features an integrated USB BDM debugger. The integrated debugger

supports application development and debugging via the background debug mode. A type B,

USB connector provides connectivity between the target board and the host PC.

NOTE: Using the integrated USB BDM requires CodeWarrior Development Studio for Micro-

controllers Special Edition, V6.0 or later. Development tools from P&E Microcomputer

Systems also support the target device.

DEMOAC USER GUIDE APRIL 10, 2008

The integrated debugger provides power and ground to the target, thereby eliminating the

need to power the board externally. Power from the integrated USB BDM is derived from the

USB bus; therefore, current consumption is limited by the USB specification. Total current

consumption for the target board, and any connected circuitry, must not exceed 350 mA. Ex-

cessive current drain will violate the USB specification causing the bus to disconnect. This will

force a target POR.

CAUTION: Violating the USB specification will cause the USB bus to disconnect forcing the

target to reset. Damage to the board or host PC may result.

The integrated USB BDM provides a virtual COM port for serial communication applications.

The BMD also provides virtual instrument analyzer function. Refer to the P&E Micro Demo

Toolkit for details.

BDM Port Connector

As standard 6-pin BDM connector is also provide to allow use of external BDM cables capable

of supporting the MCF51AC26 or MC9S08AC128/60/16 devices.

Figure 1: BDM Connector

BKGD*/MS 1 2 VSS

3 4 RESET*

5 6 VDD

POWER

The DEMOAC may be powered from the integrated USB BDM, an on-board voltage regulator,

or from the MCU connector at J1. Alternatively, the DEMOAC may be configured to provide

power to external circuitry connected to the MCU connect J1.

The PWRSW power switch controls input voltage to the board regardless of input voltage

source.

External Power

The power jack at POWER allows the board to be powered from an externally connected

power source. This connection accepts a standard 2.1mm, center-positive, barrel plug con-

nector. +VIN should fall between +7VDC and +18VDC. Input voltage applied to the barrel

connector should be kept as lows as possible to minimize device heating.

DEMOAC USER GUIDE APRIL 10, 2008

Figure 2: PWR Jack

2.1mm, center-positive, +V input

Applied voltage: +7V to +18V

PWR

A voltage regulator provides +5V to the target MCU and board circuitry. The regulator pro-

vides a maximum of 500 mA. The regulator is over-current and over-temperature protected to

prevent damage during fault conditions.

BDM Power

The integrated USB BDM is configured to provide power to the target device and connected

circuitry. After the BDM enumerates on the USB bus, the BDM will provide up to 350 mA to

the board. Excessive current drain will violate the USB specification and cause de-enumerate

the BDM. This will disconnect power to the board and cause a target reset.

CAUTION: Violating the USB specification will cause the USB bus to disconnect forcing the

target to reset. Damage to the board or host PC may result.

Power Switch – PWRSW

The PWRSW easily connects and disconnects input voltage to the board. The silkscreen

clearly marks the ON and OFF positions. This switch controls all voltage levels on the board.

Voltage Indicators

A +5V LED indicates the board is powered.

PWR_SEL Option Header

The PWR_SEL option header selects the source of input power to the EVB. The board may

be powered from a voltage source connected to either the POWER connector or the integrated

USB BDM. The BDM can provide up to 350 mA of current to the EVB.

DEMOAC USER GUIDE APRIL 10, 2008

Figure 3: PWR_SEL Option Header

PWR_SEL

• • • Selects input voltage from POWER connector

BDM VR1 NOTE: The VR1 input is connected to the regulator at VR2.

This is an error in the board silkscreen.

PWR_SEL

• • • Selects input voltage from the integrated BDM

BDM VR1

NOTE: The voltage regulator reference designator at the PWR_SEL option header does not

match the reference designator of the voltage regulator.

VX_EN Option Header

The VX_EN option header is a 2-pin jumper that connects the target-board voltage rail to IO

connector position J1-1. IO connector position J1-3 connects directly to the ground plane.

This input requires a regulated +5.0V voltage source. This power input is decoupled to mini-

mize noise input but is not regulated. Also, no protection is applied on this input and damage

to the target board may result if over-driven. Do not attempt to power the target board through

this connector while also applying power through the PWR connector as damage to the board

may result.

Power may be sourced to off-board circuitry through the MCU_PORT. The current limitation of

the on-board regulator must be considered when attempting to source power to external cir-

cuitry. Excessive current drain may damage the target board or the on-board regulator. The

figure below shows the VX_EN option header connections.

Figure 4: VX_EN Option Header

ON Enable power connection to connector J1

VX_EN

▪ ▪ OFF Disable power connection to connector J1

VX_EN

CAUTION: Do not apply power to connector J1 while also sourcing power from either the

PWR connector. Damage to the board may result.

NOTE: Do not exceed available current supply from on-board regulator when sourcing power

through connector J1 to external circuitry.

MCU Power

Each power input is routed through an option header. The option header is not installed in

default configurations and a cut-trace on each power input provides default connections. To

DEMOAC USER GUIDE APRIL 10, 2008

apply an alternate power input, simply remove the cut-trace using a sharp knife. Then either

solder a wire to the thru-hole via or install a pin header and wire-wrap a wire connection.

The various power inputs are grouped together at JP1. This allows each voltage input to be

selected individually using multiple 1x2 pin headers or all voltage input may be selected using

a 2x5 pin header.

MCUVDD

The VDD option header applies board VDD to the target MCU. This jumper may be used to

apply alternate voltage levels or to measure input current under operating conditions.

VDDAD

The VDDA option header connects the target device VDDA input to the VDD rail by default.

This jumper may be used to apply alternate voltage input or to measure input current under

operating conditions.

VSSAD

The VSSA option header connects the target device VSSA input to the EVB digital ground rail

by default. This option header may be used to apply ultra clean ground or to measure input

current under operating conditions.

VREFH

The VREFH option header connects the target device VREFH input to the VDD rail by default.

This jumper may be used to apply alternate voltage input or to measure input current under

operating conditions.

VREFL

The VREFL option header connects the target device VREFL input to the ground rail by de-

fault. This option header may be used to apply ultra clean ground or to measure input current

under operating conditions.

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