TWR-MCF51JF-KIT Freescale Semiconductor, TWR-MCF51JF-KIT Datasheet - Page 10

• Manufacturer Part Number: TWR-MCF51JF-KIT
• Description: MCF51JF Tower Kit
• Manufacturer: Freescale Semiconductor
• Series: ColdFire®r
• Type: MCUr

Specifications of TWR-MCF51JF-KIT

• Rohs Compliant: YES
• Contents: Board
• Peak Reflow Compatible (260 C): Yes
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• For Use With/related Products: MCF51JF128

The 3.3V or 1.8V power supplied to the MCU is routed through a jumper, J18. The jumper shunt can be
removed to allow for either 1) alternate MCU supply voltages to be injected or 2) the measurement of
power consumed by the MCU.
2.4 Debug Interface
There are two debug interface options provided: the on-board OSBMD circuit and an external
Background Debug Mode (BDM) connector. The BDM connector is a standard 6-pin connector
providing an external debugger cable with access to the BDM interface of the MCF51JF128.
Alternatively, the on-board OSBDM debug interface can be used to access the debug interface of the
MCF51JF128.
2.4.1 OSBDM
An on-board MC9S08JM60 based Open Source BDM (OSBDM) circuit provides a BDM debug interface
to the MCF51JF. A standard USB A male to mini-B male cable (provided) can be used for debugging via
the USB connector, J19. The OSJTAG interface also provides a USB to serial bridge. Drivers for the
OSBDM interface are provided in the P&E Micro OSBDM/OSJTAG Tower Toolkit (available on the
included DVD). These drivers and more utilities can be found online at
http://www.pemicro.com/osbdm.
2.5 Infrared Port
An infrared transmit and receive interface is implemented as shown in Figure 5 below. The CMT_IRO
pin directly drives an infrared diode. The receiver uses an infrared phototransistor connected to an on-
chip analog comparator through a low-pass filter. Internal to the MCF51JF device, the output of the
analog comparator can be routed to a UART module for easier processing of the incoming data stream.
TWRMCF51JFUM
TWR-MCF51JF Tower Module User's Manual
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