DEMO9S08QE8 Freescale Semiconductor, DEMO9S08QE8 Datasheet - Page 23

• Manufacturer Part Number: DEMO9S08QE8
• Description: BOARD DEMO FOR MC9S08Q
• Manufacturer: Freescale Semiconductor
• Series: Flexis™r
• Type: MCUr

Specifications of DEMO9S08QE8

• Contents: Demo Board
• Silicon Manufacturer: Freescale
• Core Architecture: HCS08
• Core Sub-architecture: HCS08
• Silicon Core Number: MC9S08
• Silicon Family Name: Flexis - S08QE
• Rohs Compliant: Yes
• For Use With/related Products: MC9S08QE8
• For Use With: DEMOACEX - BOARD EXPANSION FOR DEMO KIT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

6.2
7
7.1
7.1.1
DEMO9S08QE8 User Manual
JUMPER SETTINGS
Serial Accelerometer Application
System Power
J3 - Regulator Input Selection Jumper
This microcontroller application samples the state of the on-board three-axis
accelerometer using on-chip A/D converter channels. This data is converted
into ASCII characters and sent out using the serial pins of the QE8 processor.
These serial pins may be connected to either serial port hardware or to P&E’s
virtual serial port (which is part of the Embedded Multilink design). This
connection is controlled by jumpers J6 and J7.
P&E has two PC-based DEMOQE Toolkit applications which allow the serial
port data generated by this application to be graphed. These are documented
in Section 5.4 - DEMOQE Accelerometer Demo Application and Section
5.5 - DEMOQE Serial Grapher Application.
The source code for this microcontroller based Serial Accelerometer
Application is included on the CD-ROM included with the DEMOQE and also
may be found at http://www.pemicro.com/fixedlinks/demoQEtoolkit.html.
The QE8 processor may obtain its power from either the on-board regulator, a
2-cell battery pack, or through MCU_PORT J1. The on-board regulator
obtains its input from either the Embedded Multilink circuitry or a 2.5mm barrel
connector. The on-board regulator can regulate the output to either 2.1V or
3V. The DEMO9S08QE8 is fully functional at both voltages. Power input and
voltage selection are achieved by using 3 option headers.
Jumper 3 determines whether the DEMO9S08QE8’s on-board regulator
obtains its power from the DC power jack or from the Embedded Multilink
circuitry. The regulator input selection is mutually exclusive. It prevents power
input contention from damaging the board and the host. Figure 7-1 shows the
regulator input selection details.
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