M68EVB908QL4 Freescale Semiconductor, M68EVB908QL4 Datasheet - Page 8

• Manufacturer Part Number: M68EVB908QL4
• Description: BOARD EVALUATION FOR 908QL4 MCU
• Manufacturer: Freescale Semiconductor
• Type: MCUr

Specifications of M68EVB908QL4

• Contents: Module and Misc Hardware
• For Use With/related Products: MC68HC908QL4 Family
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

M 6 8 E V B 9 0 8 Q L 4
USER_COMPONENTS
Two push switches, potentiometer, and LED indicator are provided for user application.
JP1 USER OPTIONS
The JP1 option block provides a method to enable or connect user components to be applied
with the HC08 I/O ports. The development board user should be familiar with the input and
output application so that port conflicts do not occur. Following is the option connection
reference table:
Note: RESET switch, IRQ switch, and LED indicator are active logic low.
RESET Switch
The RESET switch applies an active low signal to the HC08 PTA3/RST*/KBI3 pin if the JP1
option position 2 is installed. When applying the CYCLONE cable and port, this jumper should
be installed to enable the pull-up resistor on the RESET signal.
IRQ Switch
The IRQ switch applies an active low signal to the HC08 PTA2/IRQ*/KBI2 pin if the JP1 option
position 1 is installed.
RV1 User Potentiometer
The User Potentiometer provides an adjustable linear voltage from 0 to 5V. The voltage signal
is made available to HC08 port PTB3 / AD5 analog input by the JP1 position 3 option jumper
installed. The HC08 ADC module can measure the input voltage to allow user application
response to the input voltage level.
POSITION
1
2
3
4
IRQ Push Switch
RESET Push Switch
RV1 Potentiometer
D1 Indicator (active low)
USER COMPONENT
PTA2/IRQ*/KBI2
PTA3/RST*/KBI3
PTB3/AD5
PTB0/TCH0
HC08 PORT
8
DIRECTION
PORT
Output
Input
Input
Input
1 2 / 0 4 / 0 3
ALTERNATE PORT
MCU PORT pin 3,
MCU PORT pin 4
MCU PORT pin 6
MCU PORT pin 5
CYCLONE
MON_EN,