Quick Start Guide for TWR-S12GN32
TOWER SYSTEM
TWR-S12GN32
Scalable platform for
automotive applications
TOWER SYSTEM
Get to Know the TWR-S12GN32
Optional BDM
Connecctor
Secondary
Connector
Headers
LIN Connectors
Serial Port
Primary
Connector
Potentiometer
Push Buttons
LEDs
On-Board
OSBDM
Optional External
Power Supply
TWR-S12GN32
Freescale Tower System
The TWR-S12GN32 module is a single board computer as well as
part of the Freescale Tower System, a modular development platform
that enables rapid prototyping and tool re-use through reconfigurable
hardware. Elevate your design to the next level and begin constructing
your Tower System today.
Quick Start Guide for TWR-S12GN32
TOWER SYSTEM
TWR-S12GN32 Features
• 12GN32 series microcontroller
S
(48-pin LQFP)
• n-board JTAG connection via open
O
source OSBDM circuit using the
MPC9S08JM microcontroller
See
pemicro.com/osbdm
for
source code
• High-speed CAN interface
• LIN interface
• Potentiometer with LP filter
• LED indicators
• S-232 serial communication
R
interface
Step-by-Step Installation Instructions
In this Quick Start Guide, you will learn how to set up the
TWR-S12GN32 board and run the default exercise.
STEP
1
Install Software
and Tools
STEP
• Install CodeWarrior Development
Studio for S12 v5.1 or later
A 30 evaluation license of CodeWarrior is included
on the DVD for your convenience. For updates,
please visit
freescale.com/TWR-S12GN32.
Connect one end of the USB
cable to the PC and the other end to the
mini-B connector on the TWR-S12GN32
board. Allow the PC to automatically
configure the USB drivers if needed.
2
Connect the USB Cable
TOWER SYSTEM
STEP
3
Using the
Example Project
STEP
4
Learn More About the
S12GN32
The pre-loaded example utilizes the TWR-
S12GN32’s push button switches, serial
communications interface and LEDs.
Once the board is plugged in you can
control the bank of four LEDs by pushing
one of the four on-board push buttons
(SW1–4). Connect the included serial
adapter to J8 and start a terminal in your
computer (9600 bauds, eight data bits,
one stop bit, no parity). You should see
the keystrokes echoed by the device.
Release notes and documentation are
available on the DVD and at
freescale.com/S12G.
•
The Processor Expert graphical
initialization software included in your
CodeWarrior installation will help reduce
your time to market
•
CodeWarrior for S12 with examples
Quick Start Guide for TWR-S12GN32
TOWER SYSTEM
TWR-S12GN32 Jumper Options
The following is a list of all jumper options.
Jumper
Option
Setting
Description
1-2
3-4
5-6
7-8
JP2
Connect PAD4 pin to SW1
Connect PAD5 pin to SW2
Connect PAD6 pin to SW3
Connect PAD7 pin to SW4
Connect PAD10 to POT
Connect PT2 pin to LED1
Connect PT3 pin to LED2
Connect PT4 pin to LED3
Connect PT5 pin to LED4
Connects target MCU SCI port to RS-232 PHY to
enable LIN bus communications
Connects target MCU SCI port to LIN PHY to enable
LIN bus communications
Ground
Reset
Not populated. Enables bootloader at startup.
Option Header
9-10
11-12
13-14
15-16
17-18
3-5, 4-6
JP1
COM_EN
1-3, 2-4
1-2
3-4
1-2
J3
JP401
BDM_PORT
Bootloader
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