TWR-MCF51MM Freescale Semiconductor, TWR-MCF51MM Datasheet - Page 4

• Manufacturer Part Number: TWR-MCF51MM
• Description: TOWER SYSTEM BOARD MCF51MM
• Manufacturer: Freescale Semiconductor
• Series: ColdFire®, Flexis™r
• Type: MCUr

Specifications of TWR-MCF51MM

• Contents: Board, 3 Modules, MED-EKG Kit, Cables, Documentation, DVD
• Product: Microcontroller Modules
• Data Bus Width: 32 bit
• Core Processor: MCF51MM
• Clock Speed: 32 KHz
• Interface Type: RS232, RS485, CAN , USB
• Flash: 256 KB
• Operating Supply Voltage: 3.3 V
• Silicon Manufacturer: Freescale
• Core Architecture: Coldfire
• Core Sub-architecture: Coldfire V1
• Silicon Core Number: MCF51
• Silicon Family Name: Flexis - MCF51MM
• Rohs Compliant: Yes
• For Use With/related Products: Freescale Tower System, MCF51MM
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

2 Reference Documents
The documents listed below are available online. Refer to
latest revision of all Tower System documentation.
3 Hardware Features
This section provides more details about the features and functionality of the TWR-MCF51MM.
3.1
Two crystals are provided on the board for clocking the MCF51MM256 device:
3.2
The TWR-MCF51MM can be powered by the Open Source BDM (OSBDM) circuit via the Mini-B USB
connector when stand-alone. When assembled with the Tower System and the TWR-SER is configured
to run USB device mode (J16 pin 3 and 4 connected), the Mini-B USB connector is no longer used as a
power source and only used for OSBDM debugging purposes. In this case, the power will be supplied
from the Mini-B USB from the TWR-SER. Please plug in the Mini-B USB connector from TWE-SER before
plugging in the Mini-B USB connector from TWR-MCF51MM.
A standard USB A male to Mini-B male cable (provided) can be used to supply power from a USB host
or powered USB hub. Optionally, an AC to DC adapter with a USB A female receptacle (not provided)
can be used as the power source.
A jumper, J11, can be used to isolate the 3.3V supply from the microcontroller. This connection can be
used to measure the power usage of the MCF51MM256 microcontroller.
3.3
An on-board, MC9S08JM60 based OSBDM circuit provides a debug interface to the MCF51MM256. 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-MCF51MM Schematics
 TWR-MCF51MM Quick Start Guide
 TWR-MCF51MM-KIT Lab Tutorial
 MCF51MM256 Reference Manual
 MCF51MM256 Data Sheet
 AN3561, USB Bootloader for the MC9S08JM60
1. A 16 MHz crystal connected to XTAL2 and EXTAL2 for system clocking
2. A 32.768kHz crystal connected to XTAL1 and EXTAL1 for TOD usage
Clocking
System Power
Debug Interface
TWR-MCF51MM User Manual
http://www.freescale.com/tower
Page 4 of 12
for the