CME-8GB60 AXIOM, CME-8GB60 Datasheet - Page 11

• Manufacturer Part Number: CME-8GB60
• Description: Microprocessor Development Tool
• Manufacturer: AXIOM

Specifications of CME-8GB60

• Silicon Manufacturer: Freescale
• Core Architecture: HC08
• Features: SPI And IIC Serial Ports, Regulated +3.3V Power Supply, Analog Or PTB I/O Port
• Silicon Core Number: MC9S08GB60
• Silicon Family Name: 68HC08
• Rohs Compliant: No
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

M 6 8 E V B 9 0 8 G B 6 0
COM2
COM Switch operation with COM2 notes:
1) COM SW position 4 will connect or isolate the SCI2 RXD pin (PTC1) from the transceiver.
2) COM_SW position 2 will connect or isolate HCS08 PTF6 as the RS232 CD output signal control.
3) COM_SW position 3 will connect or isolate HCS08 PTD6/TPM2CH3 as the RS232 DTR input control signal.
4) COM_SW position 5 will connect or isolate HCS08 PTF7 as the RS232 RTS output signal control.
5) COM_SW position 6 will connect or isolate HCS08 PTD7/TPM2CH4 as the RS232 CTS input control signal.
The COM2 connector connections provide the same access test pads for pins 1, 4, 6, 7, 8, and
9 as the COM1 port.
422_485 Port
The 422_485 port provides the HCS08 SCI2 operation of a high-speed 2 or 4 wire RS485 or
RS422 compatible network.
distances due to the application of differential drivers and receivers. The network type also
allows multiple receivers on the same wire pair so that a master / slave communication type
can be achieved. The 422_485 port cannot be operated at the same time as COM2 due to the
sharing of the HCS08 SCI2 channel.
422_485 Connector
COM Switch position 7 will connect or isolate HCS08 RXD2 as the 422_485 receive signal.
485_EN
This option jumper installed will connect the HCS08 I/O port PTF7 as transmit enable control
signal for the 422_485 serial port. The option allows for operation in the 2W 485 mode
(2WEN) or 4W 422 mode (4WEN).
Operation of the enable signal is to provide a transmitter on and off control so that multiple
nodes can be placed on the 485_422 network.
(DTR) 4 4 8 8 (RTS)
(CD) 1 1
RXD2 3 7 7 (CTS)
TXD2 2 6 6 (idle)
GND 5 9 9
1
2
3
4
5
X
4W TX+
4W TX-
4W RX-
4W RX+
GND
The COM-2 port has a Female DB9 connector that
interfaces to the HCS08 internal SCI2 serial port via the
U8 RS232 transceiver. It applies simple 2 wire
asynchronous serial with optional hardware flow controls.
2W TX- / RX-
2W TX+ / RX+
GND
This type of interface provides higher baud rates over longer
The active level of the enable signal is logic high.
11
Notes:
1) 4W TX is enabled at all times with 485_EN
2) 4W TX output is controlled by HCS08 PTF7
3) 2W TX output must be enabled by the
4) 2W or 4W TX output is enabled by HCS08
option open or in the 2WEN setting.
with 485_EN in the 4WEN position.
485_EN 2WEN option installed.
PTF7 with a logic high. 485_EN option
installed.
0 2 / 1 7 / 0 6