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7.6.1
7.7
7.7.1
7.8
7.8.1
7.9
32
J19 - Buzzer enable jumper BUZ_EN
Enables Buzzer to be controlled by PTB5. This is the default setting.
Figure 7-15: Accelerometer Signal Output ACC_EN (J19)
IIC Pull-up
The MC9S08QB8 does not have a dedicated IIC module. Installing IIC_EN
jumpers has no effect on the device.
J20 - IIC Pullup Enable Jumpers IIC_EN
Enables IIC external pullup. This is the default setting.
Figure 7-16: IIC External Pullup Enable IIC_EN (J20)
Analog Input Potentiometer
The DEMO9S08QB8 provides an easy access 10Kohm potentiometer whose
output may be connected to PTC6 and/or PTA0, selectable by J21, POT_EN.
J21 - Potentiometer Output Selection Jumpers POT_EN
Selects the potentiometer output connection. By default it is
connected to PTA0.
Figure 7-17: Potentiometer Output Selection Jumpers POT_EN (J21)
Optional External Crystal Circuitry Jumper Enable
The DEMO9S08QB8 provides external crystal circuitry without components
populated. A user may elect to populate the components, and may use
jumper J17, CLOCK_EN, to enable the external crystal circuitry.
DEMO9S08QB8 User Manual
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