DEMO9S08SH8 Freescale Semiconductor, DEMO9S08SH8 Datasheet - Page 13

• Manufacturer Part Number: DEMO9S08SH8
• Description: BOARD DEMO FOR MC9S08SH FAM
• Manufacturer: Freescale Semiconductor
• Type: MCUr

Specifications of DEMO9S08SH8

• Contents: Board, Cable, CD
• Processor To Be Evaluated: MC9S08SH4 and MC9S08SH8
• Data Bus Width: 8 bit
• Interface Type: RS-232, USB
• Silicon Manufacturer: Freescale
• Core Architecture: HCS08
• Core Sub-architecture: HCS08
• Silicon Core Number: MC9S08
• Silicon Family Name: S08SH
• Kit Contents: Board
• Rohs Compliant: Yes
• For Use With/related Products: MC9S08SH4, MC9S08SH8
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

D E M O 9 S 0 8 S H 8
U S E R
USER I/O
User I/O includes 1 potentiometers, 1 Light Sensor, 2 push button switches, and 2 green LEDs
for user I/O. The User option header block enables or disables each User I/O function indi-
vidually.
Potentiometer
The DEMO9S08SH8 target board provides a 5K ohm potentiometer (POT) to simulate analog
input. The POT is decoupled to minimize noise during adjustment. Potentiometer RV1 con-
nects to analog input PTA0. The figure below shows the USER enable position and associ-
ated signal for the potentiometer.
Switches
The DEMO9S08SH8 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 condi-
tions. Pressing a push-button switch causes a low logic input on the associated input. The fig-
ure below shows the USER enable position and associated signal for each user switch.
LED’s
The DEMO9S08SH8 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. The figure below
shows the USER enable position and associated signal for each user LED.
User Signals
The following table shows the connections for each user I/O device.
Table 6: User I/O
G U I D E
USER
1
2
3
4
5
6
LED1
LED2
Ref Des
SW1
SW2
RV1
RZ1
PTA2/PIA2/SDA/ADP2
PTA3/PIA3/SCL/ADP3
PTB6/SDA/XTAL
PTB7/SCL/EXTAL
PTA0/PIA0/ACMP1+
PTA1/PIA1/ACMP1-
Signal
13
Sensor
Push Button Switch
Push Button Switch
Green LED
Green LED
Potentiometer
Device
A P R I L
2 7 ,
2 0 0 7