DEMOQE128 Freescale, DEMOQE128 Datasheet - Page 48

• Manufacturer Part Number: DEMOQE128
• Manufacturer: Freescale

Specifications of DEMOQE128

• Lead Free Status / RoHS Status: Compliant

8.8
8.8.1
8.9
8.9.1
8.10
9
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DEMOQE128 CODE DEVELOPMENT SOFTWARE
Analog Input Potentiometer
Optional External Crystal Circuitry Jumper Enable
Optional Jumpers For Various VDD And VSS
Figure 8-18: External Crystal Circuitry Enable Jumper CLOCK_EN (J17)
J21 - Potentiometer Output Selection Jumpers POT_EN
J17 - External Crystal Circuitry Enable Jumpers CLOCK_EN
Figure 8-17: Potentiometer Output Selection Jumpers POT_EN (J21)
The DEMOQE128 provides an easy access 10Kohm potentiometer whose
output may be connected to PTC6 and/or PTA0, selectable by J21, POT_EN.
The DEMOQE128 provides external crystal circuitry without components
populated. A user may use jumper J17, CLOCK_EN, to enable the external
crystal circuitry.
The DEMOQE128 provides 5 jumpers, J22 through J26, for different VDD and
VSS connections on the bottom of the board. By default, they are not
populated and are shorted correspondingly with zero-ohm resistors in parallel,
except J24 which is populated. A user may take off the zero-ohm resistor and
install a corresponding jumper.
The DEMOQE128 includes P&E’ s Embedded Multilink circuitry, so no
Selects the potentiometer output connection. By default it is
connected to PTA0.
Enables or disables the external crystal circuitry. Both positions must
be installed to enable use of crystal circuitry.
DEMOQE128 User Manual