NXP Semiconductors Freescale MC9S12C32 User manual

Freescale Semiconductor SLK0101UG
UserGuide Rev. 0, 9/2006
© Freescale Semiconductor, Inc., 2006. All rights reserved.
_______________________________________________________________________
Application Module Student Learning Kit Users
Guide featuring the Freescale MC9S12C32
For use with the following part numbers:
CSM-12C32
APS12C32SLK
PBS12C32SLK

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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

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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

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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.

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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

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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.

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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.

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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
1
2 Source power input from barrel connector PWR.
1
2 Source power input from connector J1.
1
2 Source power from barrel connector PWR and supply power to external
circuitry connected to J1.

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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.

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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.