DEMO9RS08KB12 Freescale Semiconductor, DEMO9RS08KB12 Datasheet - Page 12

• Manufacturer Part Number: DEMO9RS08KB12
• Description: DEMO BOARD FOR 9RS08KA12
• Manufacturer: Freescale Semiconductor
• Series: RS08r
• Type: MCUr

Specifications of DEMO9RS08KB12

• Design Resources: DEMO9RS08KB12 Schematic
• Contents: Board, Cable, DVD and Guide
• Processor To Be Evaluated: RS08
• Data Bus Width: 8 bit, 10 bit
• Operating Supply Voltage: - 0.3 V to + 5.8 V
• Tool Type: Demonstration Board
• Core Architecture: 68RS08
• Cpu Core: RS08
• Silicon Manufacturer: Freescale
• Core Sub-architecture: RS08
• Silicon Core Number: MC9RS08
• Silicon Family Name: RS08KB
• Rohs Compliant: Yes
• For Use With/related Products: MC9RS08KB12
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

D E M O 9 S 0 8 K B 1 2
N O V E M B E R
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U S E R
G U I D E
USER OPTIONS
The DEMO9RS08KB12 includes various input and output devices to aid application
development and debug. User I/O includes 2 momentary pushbutton switches, 2 green LEDs,
1 potentiometer, 1 Light Sensor. Each device may be enabled or disabled individually with the
USER_EN option header. Each user enable is clearly marked as to functionality.
Pushbutton Switches
Two push button switches provide momentary, active-low input, for user applications. External pull-
ups internal bias the switches for proper operation. Pushbutton switches SW1 and SW2 are
enabled to the MCU I/O ports by the USER_EN option bank. Figure 8 below shows the jumper
setting for the pushbutton switches.
LED Indicators
Two LEDs provide visual output for user applications. Both LEDs are configured for active-low
operation. Figure 8 below shows the jumper setting for the LED’s.
Potentiometer
A 5k ohm, thumb-wheel type, potentiometer at RV1 provides variable resistance input for user
applications. The output is the result of a voltage divider that changes as the thumb-wheel is
turned. The potentiometer is connected between VDD and GND with the center tap providing the
divider output. Figure 8 below shows the jumper setting for the POT.
Light Sensor
A surface-mount phototransistor, at RZ1, provides light sensitive, variable input for user
applications. Current flow within the phototransistor is inversely proportional to light intensity
incident on the surface of the device. A rail-to-rail OP amp at U5 boosts the photocell output to
useable levels. Figure 8 below shows the jumper setting for the Light Sensor.
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