DEMO9S08RG60E Freescale Semiconductor, DEMO9S08RG60E Datasheet - Page 11

• Manufacturer Part Number: DEMO9S08RG60E
• Description: BOARD DEMO S08RG/RC/RD/RE FAMILY
• Manufacturer: Freescale Semiconductor
• Type: MCUr

Specifications of DEMO9S08RG60E

• Contents: *
• Processor To Be Evaluated: MC9S08RG60
• Data Bus Width: 8 bit
• Interface Type: RS-232
• For Use With/related Products: MC9S08RC, MC9S08RD, MC9S08RE, MC9S08RG
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

D E M O 9 0 8 G B 6 0
Communications
The DEMO9S08RG60 module provides a single SCI communications port.
connected to the MCU_PORT and to the SCI1 connector. An RS-232 translator (U2) has been
provided between the SCI1 connector and the MCU. Communication signals applied to the
MCU-PORT connector must be directly compatible with the HCS08 device; no translation
support is provided through this path. As added development support, handshake signals RTS
and CTS are available at the output of U2. These signals are routed to vias located behind the
SCI1 connector. RTS has been biased properly to support 2-wire RS-232 communications.
Use of the MCU_PORT interface for RS-232 services requires disabling the on-board RS-232
translator. This is accomplished by opening cut-traces CT1, CT2, and CT3. Simply remove
the circuit trace between cut-trace pads to open the circuit. To restore the circuit, install a
suitably sized 0-ohm resistor or a short piece of wire across the cut-trace pads. See Cut-Trace
Setting above for details.
SCI1 Connector
A standard 9-pin Dsub connector provides external connections for the SCI1 port. The SCI1
port is used by default with the serial debug monitor.
translation services. The figure below details the DB9 connector.
TXD
RXD
GND
PTB0/TXD1
PTB1/RXD1
HCS08Port
1
2
3
4
5
6
7
8
9
RTS
CTS
NC
RS-232 Disable
SCI1 TXD OUT
SCI1 RXD IN
Freescale Semiconductor, Inc.
Table 4: SCI1 Connections
For More Information On This Product,
Figure 1: SCI1 Connector
Female DB9 connector that interfaces to the HCS08 internal
SCI1 serial port via the U2 RS232 transceiver. It provides
simple 2 wire asynchronous serial communications without
flow control. Flow control is provided at test points on the
module.
Pins 1, 4, and 6 are connected together.
COM Signal
Go to: www.freescale.com
11
Connector
I/O PORT
3
4
Component U2 provides RS-232
Signal Disable
CT3
CT1
CT2
This port is
0 2 / 0 6 / 0 4