Freescale Semiconductor DEMO9S08AC60E Accelerometer U5 Connections, Light Sensor, Potentiometer

Table 1-11 Accelerometer (U5) Connections

Accelerometer	MCU Port	Jumper
Function
Sleep Mode	PTC4	J5
Amplified Y Output	PTD4	J6
Amplified X Output	PTD5	J7
Raw Y Output	PTD6	J8
Raw X Output	PTD7	J9

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

DEMO9S08AC60E User’s Guide, Rev. 0.1

20 Freescale Semiconductor