NXP Semiconductors Freescale MC9S12C32 Manuale utente

Freescale Semiconductor SLK0101UG

UserGuide Rev. 0, 9/2006

_______________________________________________________________________

Application Module Student Learning Kit Users

Guide featuring the Freescale MC9S12C32

For use with the following part numbers:

CSM-12C32

APS12C32SLK

PBS12C32SLK

2 Freescale Semiconductor

CONTENTS

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

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

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

INTRODUCTION........................................................................................................................7

GETTING STARTED..................................................................................................................7

OPERATION..............................................................................................................................7

POWER................................................................................................................................. 8

PWR.................................................................................................................................. 8

CONNECTOR J1............................................................................................................... 8

PWR_SEL JUMPER.......................................................................................................... 8

RESET SWITCH ................................................................................................................... 9

LOW-VOLTAGE DETECT..................................................................................................... 9

TIMING.................................................................................................................................. 9

COMMUNICATIONS............................................................................................................. 9

COM CONNECTOR........................................................................................................ 10

CONNECTOR J1............................................................................................................. 11

USER OPTIONS ................................................................................................................. 11

SWITCHES ..................................................................................................................... 11

LED’S............................................................................................................................... 12

DEVELOPMENT SUPPORT....................................................................................................12

ASCII MONITOR OPERATION........................................................................................... 12

ASCII MONITOR MEMORY MAP ................................................................................... 12

MONITOR COMMANDS................................................................................................. 13

INTERRUPT SUPPORT.................................................................................................. 13

INTERRUPT VECTOR TABLE........................................................................................ 14

SERIAL MONITOR OPERATION........................................................................................ 15

SERIAL MONITOR MEMORY MAP................................................................................ 15

BDM_PORT HEADER......................................................................................................... 16

Freescale Semiconductor 3

FIGURES

Figure 1: PWR_SEL ...................................................................................................................8

Figure 2: COM Connector.........................................................................................................10

Figure 3: MCU_PORT Connector.............................................................................................11

Figure 4: BDM_PORT...............................................................................................................16

TABLES

Table 1: Serial COM Signals ....................................................................................................10

Table 2: User Option Jumper Settings......................................................................................11

Table 4: Monitor Commands ....................................................................................................13

Table 5: Monitor Memory Map..................................................................................................12

Table 6: MON12 Interrupt Vector Table....................................................................................14

Table 7: Serial Monitor Memory Map........................................................................................15

REVISION

August 25, 2006 A Initial release

4 Freescale Semiconductor

Cautionary Notes

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

product. ESD damage is not a warranty repair item.

♦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.

♦EMC Information on the APS12C32SLK module:

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

been verified to meet with requirements of CE and the FCC as a CLASS B product.

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 products operation from the

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

electronic equipment. If such interference is detected, suitable mitigating measures should

be taken.

TERMINOLOGY

This module uses option selection jumpers and cut-traces to setup default configuration.

Terminology for application of the option jumpers is as follows:

Jumper – a plastic shunt that connects 2 terminals electrically

Jumper on, in, or installed - jumper is installed such that 2 pins are connected together

Jumper off, out, or idle - jumper is installed on 1 pin only. It is recommended that

jumpers be idled 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 razor 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.

Freescale Semiconductor 5

FEATURES

The APS12C32SLK is an educational application module for the Freescale Semiconductor

MC9S12C32 microcontroller. Application module SLK’s include components for out-of-box

operation and are preprogrammed with a serial monitor to make application development quick

and easy. A background DEBUG port is provided for development tool use and is compatible

with HCS12 BDM interface cables and software. The 40-pin connector allows the

APS12C32SLK module to be connected to an expanded evaluation environment such as the

Microcontroller Project Board Student Learning Kit (PBMCUSLK) or user’s custom PCB.

Features:

♦MC9S12C32 MCU, 48 QFP

♦32K Byte Flash EEPROM

♦2K Bytes RAM

♦31 I/O lines

♦Timer/PWM

♦SCI and SPI Communications Ports

♦Key Wake-up Port

♦BDM DEBUG Port

♦CAN 2.0 Module

♦Analog Comparator

♦8 MHz Internal Bus Operation Default

♦25 MHz Bus Operation using internal PLL

♦+3.3VDC to +5VDC operation

♦Power Input Selection Jumper

♦On-board, regulated +5V power supply

♦Optional power input/output from Connector J1

♦16 MHz Ceramic Resonator

♦RS-232 Serial Port w/ DB9 Connector

♦8-Ch, 10-bit, Analog Comparator with full rail-to-rail operation and

external trigger capability

♦8-Channel, 16-bit Timer with Input Capture, Output Compare, and

PWM capabilities

♦User Components Provided

♦3 Push Button Switches: 2 User, RESET

♦3 LED Indicators: 2 User, VDD

♦Jumpers

♦Disable User Components

♦Power Select

♦Connectors

♦40 pin connector provides access to most MCU I/O signals

♦2.0mm Barrel Connector Power Input

♦DEBUG BDM Connector

♦DB9 Communications Connector

♦Supplied with DB9 Serial Cable, Documentation (CD), Manual, and Wall plug type power supply.

Specifications:

Module Size 2.2” x 1.6”

Power Input: +9VDC @ 200 mA typical, +6 to +16VDC range

6 Freescale Semiconductor

References

Reference documents are provided on the support CD in Acrobat Reader format. More

information can be found in the Application Notes section of the Freescale Web site.

APS12C32SLKSCHEM.pdf APS12C32SLK Application Module Schematic

APS12C32SLKUG.pdf APS12C32SLK User Guide

9S12C32DGV1.pdf MC9S12C32 Device User Guide

9S12C32_ZIP.zip Zip file containing Device Block User Guides

APS12C32SLKQSUG.pdf Quick Start Guide for use with stand-alone module

APS12C32SLKSW.zip CodeWarrior project for use with

APS12C32SLK_QSUG

AN2548.pdf Serial Monitor Program for HCS12 MCU’s

The following reference documents are for using the application module in conjunction with the

Freescale Microcontroller Project Board Student Learning Kit:

PBS12C32SLKQSUG.pdf Quick Start Guide for application module use with

PBMCUSLK

PBS12C32SLKSW.zip CodeWarrior project for use with

PBS12C32SLK_QSUG

Visit www.freescale.com\universityprogram for current product information, reference materials

and updates.

Freescale Semiconductor 7

INTRODUCTION

Before using this module, the user should be familiar with the hardware and software operation

of the target MCU. Refer to the MC9S12C32 User Manual and MC9S12C32 Reference

Manual for details on MCU operation. The module’s purpose is to promote the features of the

MC9S12C32 and to assist the user in quickly developing an application in a known working

environment. Users should be familiar with memory mapping, memory types, and embedded

software design for quick, successful, application development.

The APS12C32SLK Educational Module is a fully assembled, fully functional module

supporting Freescale MC9S12C32 microcontroller. The module comes with a serial cable,

power supply, and an embedded monitor for stand-alone operation. Support software for this

module is provided for Windows 95/98/NT/2000/XP operating systems.

Application development may be performed by using the embedded monitor, or any

compatible BDM cable with supporting host software. The embedded monitor provides an

effective, low cost, debug method. Note that when a BDM cable is used for debugging, the

BDM pod should be powered from an external supply.

GETTING STARTED

Please refer to the APS12C32SLK Quick Start Users Guide to quickly setup the stand-alone

application module or PBS12C32SLK Quick Start Users Guide to get started with the

microcontroller project board (PBMCUSLK).

Operation

The APS12C32SLK module provides input and output features designed to assist embedded

application development. Access to the MCU port signals is available through module

connector J1. This connector may also be used to input power to the module or to output

power to attached modules. RS-232 communications signals may also be input through

connector J1. Care must be exercised when using the J1 to power the module, as only

regulated voltage in the range of +3.3V to +5V should be supplied to this connection. The on-

board regulator provides a fixed +5V voltage to the module.

Five user option jumpers and 3 cut-traces control module operation. Enabling a user option

requires installing a jumper across the associated header pins. Removing the jumper disables

the associated option. An option enabled by a cut-trace can be disabled by removing the

circuit trace between the cut-trace component pads. Use a sharp knife to cut the embedded

circuit trace. Be careful not to damage adjacent circuitry. To re-enable the option, simply

install a 1206 sized 0-ohm resistor or piece of wire across the cut-trace component pads.

8 Freescale Semiconductor

Power

Power is supplied to the module through a 2.0mm barrel connector at location PWR for stand-

alone operation. The module may also be powered through connector J1 when connected to

the PBMCUSLK. Power may be sourced off-module through connector J1 to external circuitry.

Power routing on the module is determined by the PWR_SEL jumper.

PWR

The PWR connector accepts a 2.1mm, center-positive, barrel plug that allows the module to be

powered from a wall-plug transformer or from a desktop power supply. Input voltage should be

limited to between +7V and +20V. Input voltage of +9VDC is typical. This input supplies the

on-board +5V regulator that powers the module.

Connector J1

Power may be supplied to the module through the pins J1-1 and J1-2. Use of this option

requires a regulated voltage input limited to the range of +3.3VDC to +5VDC. This input is

connected directly to the module power and ground planes. Care should be exercised not to

over-drive this input. Use of connector J1 to supply +3.3V to the module requires disabling the

voltage supervisor (LV1) by opening cut-trace CT-1. See the Low-Voltage Detect section

below. To re-enable the low-voltage supervisor, install a 1206 sized 0-ohm resistor at CT1.

Connector J1 may also be used to source +5V power from the on-board regulator to external

modules attached to connector J1. The PWR_SEL option header determines how power is

routed to the module.

PWR_SEL Jumper

The PWR_SEL jumper is a 4-position option header that configures power routing on the

APS12C32SLK module. The module may be powered by an external transformer connected

to the PWR connector or through connector J1. The module may also source power to

auxiliary modules connected to the connector J1. Damage may occur if the J1 power input

pins are over-driven. Refer to the Figure 1 to determine correct PWR_SEL jumper setting.

Figure 1: PWR_SEL

2 Source power input from barrel connector PWR.

2 Source power input from connector J1.

2 Source power from barrel connector PWR and supply power to external

circuitry connected to J1.

Freescale Semiconductor 9

Reset Switch

The RESET switch provides an asynchronous reset input to the MCU. Pressing the RESET

switch produces a low-voltage level on the RESET input to the MCU. The low-voltage

supervisor (LV1) holds the RESET line low for approximately 150 ms after the pushbutton is

released.

Low-Voltage Detect

A DS1813 (LV1) provides POR, low-voltage detect, and pushbutton reset services for the

module. At power-on, LV1 holds the MCU in reset for 150 ms after VCC reaches approximately

4.35V. During normal operation, LV1 asserts RESET when VCC falls below 4.35V and holds

RESET true for 150 ms after VCC returns to normal. The push-button operation is described

in the paragraph above. Use of connector J1 to supply +3.3V to the module requires disabling

LV1.

LV1 may be disabled by opening the cut-trace CT1. Simply remove the circuit trace between

the cut-trace pads to open the circuit. To restore the circuit functionality, install a 1206 size, 0-

ohm, resistor or a short piece of wire across the cut-trace pads.

Timing

A ceramic resonator (Y1) provides a 16.0 MHz base operating frequency to the MCU. This

supports a default 8.0 MHz internal operating frequency. Higher frequencies are possible

using the embedded PLL. The resonator output is routed to the MCU only and is not available

at the MCU Port connector (J1). The MCU ECLK output is available to the user at connector

J1 if enabled.

Communications

The APS12C32SLK module provides a single RS-232 communications port. An RS-232

transceiver (U2) provides RS-232 signal level to TTL/CMOS logic level translation. RS232

signals TXD and RXD are routed between the transceiver and the MCU. These signals are

also routed to connector J1. RS-232 communication signals input on J1 must be TTL/CMOS

logic levels; no translation support is provided through this path. The transceiver output may

also be driven off-module if the signals are suitably buffered. As added development support,

hardware flow control signals RTS and CTS are available on the logic side of U2. These

signals are routed to vias located near the transceiver (U2). RTS has been biased properly to

support 2-wire RS-232 communications.

10 Freescale Semiconductor

Use of the J1 connector to input RS-232 signals requires disabling the on-board RS-232

transceiver. Otherwise, signal corruption may occur. Disabling the on-board transceiver is

accomplished by opening cut-traces CT1, and CT2. Simply remove the circuit trace between

the cut-trace pads to open the circuit. To restore the circuit functionality, install a 1206 size, 0-

ohm, resistor or a short piece of wire across the cut-trace pads.

Table 1: Serial COM Signals

COM Signal MCU Port Connector Disable

TXD PS1/TXD J1-5 CT5

RXD PS0/RXD J1-7 CT4

COM Connector

A standard 9-pin D- Sub connector provides external connections for the COM port. The COM

port is configured as a DCE device. Component U2 provides RS-232 translation services.

The figure below shows the DB9 connector.

Figure 2: COM Connector

1 6

TXD 2 7 RTS

RXD 3 8 CTS

4 9 NC

GND 5

Female DB9 connector that interfaces to the DCE serial port via an

RS232 transceiver. It provides simple 2-wire asynchronous serial

communications without flow control. A straight-through serial cable may

be connected to a DTE device such a PC

Pins 1, 4, and 6 are connected together.

Indice

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