EVB51JM128 Freescale Semiconductor, EVB51JM128 Datasheet - Page 14

• Manufacturer Part Number: EVB51JM128
• Description: BOARD EVAL FOR MCF51JM128 MCU
• Manufacturer: Freescale Semiconductor
• Series: ColdFire®r
• Type: MCUr

Specifications of EVB51JM128

• Contents: Evaluation Board
• Silicon Manufacturer: Freescale
• Core Architecture: Coldfire
• Core Sub-architecture: Coldfire V1
• Silicon Core Number: MCF51J
• Silicon Family Name: Flexis - MCF51JM
• Rohs Compliant: Yes
• For Use With/related Products: MCF51JM128
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

E V B 5 1 J M 1 2 8
COM Connector
A standard 9-pin Dsub connector provides external connections for each COMx port. The
Dsub shell is connected to board ground through a ferrite bead. The ferrite bead provides
noise isolation on the RS-232 connection. The DB9 connector pin-out is shown below.
Figure 7: COM Connector
CAN Communications
The EVB51JM128 provides a high-speed CAN physical layer interface (PHY). A 3-pin con-
nector provides connectivity to the off-board CAN bus. The CAN PHY connects to the CAN0
channel on the MCU. The PHY supports data rates up to 1 MBPS with edge-rate control to
reduce EMI/RFI. The figure below shows the pin-out of the CAN_PORT connector.
Figure 8: CAN_PORT Connector
The CAN_EN option header connects the CAN PHY to the target MCU.
Figure 9: CAN_EN Option Header
IIC Port
IIC signaling connects directly between the MCU and the MCU_PORT connector. Refer to the
MCF51JM128RM for details on using the IIC interface. Each IIC signal is pulled up to VDD at
the I2C_PULL_EN option header.
CAN_EN
1 CAN_H
2 GND
3 CAN_L
•
•
GND
RXD
TXD
4, 6
1, 6
•
•
2
3
4
5
1
U S E R
PTF7/TXCAN
PTF6/RXCAN
6
7
8
9
1, 4
RTS
CTS
NC
G U I D E
Female DB9 connector that interfaces to the ColdFire internal SCI1 serial
port via the RS232 transceiver.
Pins 1, 4, and 6 are connected together.
13
F E B R U A R Y
1 ,
2 0 0 8