DEMO9S08EL32 Freescale, DEMO9S08EL32 Datasheet - Page 12

• Manufacturer Part Number: DEMO9S08EL32
• Manufacturer: Freescale

Specifications of DEMO9S08EL32

• Lead Free Status / RoHS Status: Supplier Unconfirmed

U S E R
Figure 7: COM_SEL Option
USER I/O
User I/O includes 1 potentiometers, 1 Light Sensor, 2 push button switches, and 2 green LEDs
for user I/O.
individually. Table 3 and Figure 8 below show the USER enable position and associated
signals for each USER option.
Switches
The DEMO9S08EL32 provides 2 push button switches for user input. Each push button switch
provides an active low input with a pull-up resistor bias to prevent indeterminate input
conditions. Pressing a push-button switch causes a low logic input on the associated input.
Refer to Table 3 below.
LED’s
The DEMO9S08EL32 target board provides 2 green LEDs for output indication. Each LED is
an active low output. Writing a low logic level to an LED output causes the associated LED to
turn on. A series, current-limit resistor prevents excessive diode current. Refer to Table 3
below.
Potentiometer
The DEMO9S08EL32 target board provides a 5K ohm potentiometer (POT) to simulate analog
input.
connects to analog input PTA0. Refer to Table 3 below.
G U I D E
The POT is decoupled to minimize noise during adjustment.
COM
COM
2
1
5
6
The User option header block enables or disables each User I/O function
4
3
3
4
LIN
LIN
6
5
1
2
Select LIN communications
Select COM communications
12
Potentiometer RV1