NXP Semiconductors TWR-MCF5225X User manual

Freescale Semiconductor Inc.
TWR-MCF5225X
User Manual
Rev. 1.0

TWR-MCF51CN User’s Manual Page 2 of 9
Contents
1 Overview ......................................................................................................................................................3
2 Reference Documents..............................................................................................................................4
3 Hardware Features...................................................................................................................................4
3.1 Clocking ..................................................................................................................................................................................4
3.2 System Power.......................................................................................................................................................................4
3.3 Debug Interface ...................................................................................................................................................................4
3.4 RS232 Interface...................................................................................................................................................................5
3.5 levator Connections........................................................................................................................................................5
3.6 Mechanical Form Factor..................................................................................................................................................5
4 Jumper Table ..............................................................................................................................................
Input/Output Connectors and Pin Usage Table .............................................................................6
6 OSBDM...........................................................................................................................................................7
6.1 Bootloader Mode ................................................................................................................................................................7
Revision istory
Revision Date Changes
1.0 Sept 23, 2009 Initial Release

TWR-MCF51CN User’s Manual Page 3 of 9
1Overview
The MCF5225X Tower MCU Module (TWR-MCF5225X) is a low-cost evaluation, demonstration and
development board. The TWR-MCF5225X can operate stand-alone or as the main control board in a
Tower System with peripheral modules.
The following list summarizes the features of the TWR-MCF5225X:
•Tower compatible microcontroller module
•MCF52259 in an 144 LQFP package
•MC9S08JM60 based Open Source Debug (OSBDM) circuit
•4 user controlled LEDs
•Four DIP Switches and two push buttons for user input
•Potentiometer
•MMA7260 three-axis accelerometer
•RS232 transceiver and 2x5 pin header
•Expansion via Primary Elevator connector
A block diagram for the TWR-MCF5225X is shown in the figure below.
OSBDM
Debug, Power, SCI
MCF52259
ColdFire® V2
Microcontroller
USB
Mini-AB
Tower Elevator Expansion Connectors
SPI, I
2
C, ADC, USB, FEC, Timers, PWM, UARTs, IRQs, Mini-Flexbus, etc.
UART0
Freescale Device External Connectors Interface Circuits Power
MMA7260
3-axis
Accelerometer
ADC
26-Pin BDM
Header
GPIO
ADC
Reset
LED
LED
LED
LED
3.3V
BDM
10-Pin
Header
RS232
XCVR
CLOCKIN0
48 MHz
3.3V5.0V
5.0V
Figure 1. TWR-MCF5225X Block Diagram

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2Reference Documents
The documents listed below should be referenced for more information on the Freescale Tower
system and the TWR-MCF5225X. Refer to http://www.freesale.com/tower for the latest revision of all
Tower documentation.
•TWR-MCF5225X Schematics
•TWR-MCF5225X Quick Start Guide
•TWR-MCF5225X-KIT Lab Tutoria
•MCF52259 Reference Manua
•MCF52259 Data Sheet
•AN3561, USB Boot oader for the MC9S08JM60
3Hardware Features
This section provides more details about the features and functionality of the TWR-MCF5225X.
3.1 Clocking
Two options are provided for clocking the MCF5225X device:
1. 48 M z crystal
2. External clock input from Primary Elevator (CLOCKIN0)
Selection of the clock input is determined by the J5 jumper setting. The 48 M z crystal option is
selected by default. Refer to Table 1 for more details.
3.2 System Power
The TWR-MCF5225X can be powered by the OSBDM circuit via the Mini-B USB connector, J17, or from
a source in an assembled Tower System. A standard USB A male to Mini-B male cable (provided) can
be used to supply power from a USB ost or powered USB ub. Optionally, an AC to DC adapter with
a USB A female receptacle (not provided) can be used as the power source.
Power will automatically be sourced from the Elevator connector if power is available on both the
Elevator and the OSBDM.
A jumper, J4, can be used to isolate the 3.3V supply from the microcontroller. This connection can be
used to measure the power usage of the MCF5225X microcontroller.
3.3 Debug Interface
An on-board, MC9S08JM60 based Open Source BDM (OSBDM) circuit provides a debug interface to
the MCF5225X. A standard USB A male to Mini-B male cable (provided) can be used for debugging via
the USB connector, J17. Refer to Section 6 for information on other modes of operation of the
OSBDM.

TWR-MCF51CN User’s Manual Page 5 of 9
3.4 RS232 Interface
An RS232 transceiver on the TWR-MCF5225X connects to a standard 2x5 pin header (refer to Figure 2).
Selection jumpers J12 and J13 allow UART0 signals to be routed to either the RS232 transceiver or the
OSBDM circuit. Refer to Table 1 for more details.
MCF5225X
Signal Pin
MCF5225X
Signal
No Connect 1 2 No Connect
TXD 3 4 CTS
RXD 5 6 RTS
No Connect 7 8 No Connect
GND 9 10 3.3V
Figure 2. RS232 2x5 Pin eader Connections
3. Elevator Connections
The TWR-MCF5225X features two expansion card-edge connectors that interface to Elevator boards in
a Tower system: the Primary and Secondary Elevator connectors. The Primary Elevator connector,
comprised of sides A and B, is utilized by the TWR-MCF5225X, while the Secondary Elevator connector
only makes connections to ground (GND).
3.6 Mechanical Form Factor
The TWR-MCF5225X is designed for the Freescale Tower System and complies with the electrical and
mechanical specification as described in Freesca e Tower E ectromechanica Specification.
4Jumper Table
There are several jumpers provided for isolation, configuration, and feature selection. Refer to the
following table for details. The default installed jumper settings are shown in bold.
Table 1. TWR-MCF5225X Jumper Table
umper Option Setting Description
1-2 Disable PLL at startup
J3 Default Clock Mode Selection
(CLKMOD1) 2-3 Enable PLL at startup
ON Supply 3.3V to MCU
J4 MCU Power Connection OFF Isolate MCU from Power (connect an ammeter to
measure current)
1-2 Connect EXTAL to the on-board Crystal
J5 Clock Input Source Selection 2-3 Connect EXTAL to the CLKIN0 signal on the Elevator
Connector
J6 Default Clock Mode Selection 1-2 Do not use Crystal Oscillator at startup

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(CLKMOD0) 2-3 Use Crystal Oscillator at startup
1-2 Connect AN3 to Potentiometer
3-4 Connect TIN3/TOUT3/PWM6 to LED4
5-6 Connect TIN2/TOUT2/PWM4 to LED3
7-8 Connect TIN1/TOUT1/PWM2 to LED2
9-10 Connect TIN0/TOUT0/PWM0 to LED1
11-12 Connect AN2 to Accelerometor Z-access
13-14 Connect AN1 to Accelerometor Y-access
J7 Peripheral Selection
15-16 Connect AN0 to Accelerometor X-access
1-2 Bypass Crystal Oscillator at startup (if CLKMOD0 = 0)
2-3 Enable Internal Relaxation Oscillator at startup (if
CLKMOD0 = 0)
J10 Default Clock Mode Selection
(XTAL)
OFF Use Crystal Oscillator at startup
1-2 Connect CTS0 to the RS232 transciever for flow control
J11 UART ardware Flow Control
Connections 3-4 Connect RTS0 to the RS232 transciever for flow control
1-2 Connect TXD0 to the RS232 transceiver
J12 UART TXD0 Routing Selection 2-3 Connect TXD0 to the OSBDM debugger interface circuit
1-2 Connect RXD0 to the RS232 transceiver
J13 UART RXD0 Routing Selection 2-3 Connect RXD0 to the OSBDM debugger interface circuit
1-2 BDM mode
J14 BDM / JTAG Enable Selection 2-3 JTAG mode
1-2 Connect TCLK/PSTCLK to PSTCLK for BDM mode
J15 TCLK/PSTCLK Routing Selection
2-3 Connect TCLK/PSTCLK to TCLK for JTAG mode
1-2 Connect TCLK/PSTCLK/CLKOUT to TCLK/PSTCLK for
BDM/JTAG mode
J16 TCLK/PSTCLK/CLKOUT Routing
Selection 2-3 Connect TCLK/PSTCLK/CLKOUT to CLKOUT0 on the
Elevator Connector
ON OSBDM bootloader mode (OSBDM firmware
reprogramming)
J20 OSBDM Bootloader Selection
OFF Debugger Mode
ON Suspend MCU in Reset state (hold RSTIN low)
J21 RESET Select OFF
Release RSTIN so it can be controlled by SW4 to initiate
reset sequences
Input/Output Connectors and Pin Usage Table
The following tables provides details on which MCF5225X pins are using to communicate with the
TWR-MCF5225X sensors, LEDs, switches, and other I/O interfaces.
Table 2. I/O Connectors and Pin Usage Table

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TWR-MCF5225X MCF5225X
I/O Component I/O Label Default Alt 1 Alt 2 Alt 3
SW2-1 DDATA0   GPIO
SW2-2 DDATA1   GPIO
SW2-3 DDATA2   GPIO
Dip Switch
SW2-4 DDATA3   GPIO
SW1 GPT0  PWM1 PTA0
SW3 GPT1  PWM3 PTA1
Push Button
SW4 RSTI   
LED1 DTIN0 DTOUT0 PWM0 PTC0
LED2 DTIN1 DTOUT1 PWM2 PTC1
LED3 DTIN2 DTOUT2 PWM4 PTC2
LED
LED4 DTIN3 DTOUT3 PWM6 PTC3
X_OUT AN0   PAN0
Y_OUT AN1   PAN1
Accelerometer
MMA7260QT Z_OUT AN2   PAN2
Potentiometer POT AN3   PAN3
232_RXD URXD0   PUA1
232_TXD UTXD0   PUA0
CTS UCTS0  USB_VBUSE PUA3
RS232
ICL3232
RTS URTS0  USB_VBUSD PUA2
T_RXD1 URXD0   PUA1 OSBDM
USB↔Serial T_TXD1 UTXD0   PUA0
Note:
Refer to Chapter 15, General Purpose I/O Module, in MCF5225X Reference Manua to
configure pin to appropriate alternate function.
6OSBDM
An on-board, MC9S08JM60 based Open Source BDM (OSBDM) circuit provides a debug interface to
the MCF5225X. The MC9S08JM60 is a USB-enabled microcontroller with an 8-bit C9S08 core. The
OSBDM circuit provides a USB-to-debug interface that allows run-control and debugging of the
MCF5225X target device. The USB drivers required to communicate with the OSBDM are provided in
development tools such as Freescale CodeWarrior. This single USB connection can also be used to
power the TWR-MCF5225X stand-alone or in a fully assembled Tower System.
6.1 Bootloader Mode
The MC9S08JM60 device used in the OSBDM circuit is preprogrammed with OSBDM debugger
firmware and a USB Bootloader. The bootloader mode can be used to update the OSBDM debugger
firmware if an update becomes available. Jumper J20 determines which application will run following a
power-on reset. If Bootloader Mode is chosen (jumper shunt on J20), the bootloader will be executed,

TWR-MCF51CN User’s Manual Page 8 of 9
allowing in-circuit reprogramming of the JM60 flash memory via USB. Refer to Application Note
AN3561 on the Freescale website (http://www.freescale.com) for details on the USB Bootloader.
The USB Bootloader communicates with a GUI application running on a host PC. The GUI application
can be found on the Freescale website; search keyword “JM60 GUI”. Refer to section 2.5 and 3.3 of
AN3561 for details on installing and running the application.
Note:
The JM60 GUI Installer should be run before connecting the OSBDM in Bootloader
Mode to a host USB port. Otherwise, the JM60 USB device will not be recognized and
the proper drivers will not be loaded.

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© Freescale Semiconductor, Inc. 2009. All rights reserved.