Table 1-11 Accelerometer (U5) Connections
Accelerometer
Function
Self Test
Amplified Y Output
Amplified X Output
Raw Y Output
Raw X Output
MCU Port
PTC4
PTD4
PTD5
PTD6
PTD7
J5
J6
J7
J8
J9
Jumper
1.13.5 Light Sensor
A photo detect IC (U4) combines a photodiode and a current amplifier on a
single IC to provide variable current. The light sensor is connected to the MCU
on PTD1. PTD1 can be disconnected from the light sensor by removing jumper
J4.
1.13.6 Potentiometer
A 10 Kohm thumb-wheel potentiometer (VR1) provides variable resistor for
users to assist them in application development. The potentiometer is connected
to the MCU on PTD0. PTD0 can be disconnected from the potentiometer by
removing jumper J3. The voltage seen on PTD0 is the result of a voltage divider
that changes as the potentiometer is turned.
1.13.7 I/O Connector
A 40-pin I/O connector (J35) is available for user expansion. This connector is
located on the bottom of the board and has holes so that pins of a connecting
DEMO9S08AW60E User’s Guide, Rev. 0.3
20
Freescale Semiconductor
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