DEMO908GZ60E Freescale Semiconductor, DEMO908GZ60E Datasheet - Page 15

• Manufacturer Part Number: DEMO908GZ60E
• Description: BOARD DEMO FOR 908GZ60 MCU
• Manufacturer: Freescale Semiconductor
• Series: HC08GRr
• Type: MCUr

Specifications of DEMO908GZ60E

• Design Resources: DEMO908GZ60E Schematic
• Contents: Board, Cable, CD
• Processor To Be Evaluated: 908GZ
• Data Bus Width: 16 bit
• Interface Type: RS-232
• For Use With/related Products: 68HC908GZ60
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

D E M O 9 0 8 R G 6 0
to set the VTST_EN option jumper. The MCU supports monitor mode communications at 7200
bps. Refer to MON08 pod documentation for further details.
The internal monitor may also be accessed through and the through COM connector. As
above, MON08 mode, through the COM port, is enabled by the COM_SEL, the MON_EN, and
VTST_EN option jumpers. This allows MON08 debugging without the expense of a 3
MON08 pod. The table below shows the selection settings for the COM_SEL jumper. The
MCU supports monitor mode communications at 7200 bps.
MON08 Configuration
The following group of figures show the setting necessary to configure the DEMO908GZ60 for
monitor mode. The MON_EN jumper setting enable communication between the COM port
and the MCU MON08 port, The VTST_EN jumper provides the high voltage necessary to
force the MCU to monitor mode. The COM_SEL jumper disables the RS-232 interface to pre-
vent corrupting the serial data stream.
Figure 8: MON_EN Jumper Setting
Figure 9: VTST_EN Jumper Setting
The following table details the settings necessary to configure the MCU for MON08 monitor
mode operation via the COM port.
Figure 10: MON08 on COM Setup
COM_MODE
VTST_EN
MON_EN
NOTE: To utilize the MON08 monitor mode, the input voltage must exceed 9.0VDC
NOTE: To utilize the MON08 monitor mode, the input voltage must exceed
•
•
•
•
9.0VDC.
ON
OFF
ON
OFF
MON
•
MON08 Monitor Mode Signaling Enabled
MON08 Monitor Mode Signaling Disabled
IRQ* signal line set to 8.2V. MON08 monitor mode force entry
enabled.
IRQ* signal line pulled up to V
if Reset vector is erased.
ON
ON
MON08 Signaling Enabled
Force MON08 Monitor Mode
MON08 Signaling Enabled
15
DD
. MON08 monitor mode available
A U G U S T
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rd
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