DEMO9S08RG60E Freescale Semiconductor, DEMO9S08RG60E Datasheet - Page 6

• Manufacturer Part Number: DEMO9S08RG60E
• Description: BOARD DEMO S08RG/RC/RD/RE FAMILY
• Manufacturer: Freescale Semiconductor
• Type: MCUr

Specifications of DEMO9S08RG60E

• Contents: *
• Processor To Be Evaluated: MC9S08RG60
• Data Bus Width: 8 bit
• Interface Type: RS-232
• For Use With/related Products: MC9S08RC, MC9S08RD, MC9S08RE, MC9S08RG
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Freescale Semiconductor, Inc.
D E M O 9 0 8 G B 6 0
0 2 / 0 6 / 0 4
DEMO9S08RG60 STARTUP
To start the DEMO programs, install the PWR_SEL jumper across pins 2-3 then apply power
to the module through the on-board terminal block or the MCU_PORT connector.
There are three examples programmed into the DEMO9S08RG60 board. The programs are:
1) Debug monitor
2) Stop3 demo
3) Paced-loop demo
The Debug Monitor is the most important program loaded into the MCU residing on the Demo
board. In conjunction with software running on a host personal computer (PC), the debug
monitor enables users to program FLASH and debug their programs. This Demo requires
CodeWarrior to be installed on the development PC.
The other demo programs offer examples of some simple uses of the Demo board.
The Stop3 Demo illustrates the low-power capability of the MC9S08RG60 microcontroller
operating in stop3 mode.
The Paced-Loop Demo demonstrates a framework that users can implement in their system
to periodically execute user routines.
What Do the Demo Programs Do?
The Stop3 demo program executes by default at power up if no pushbuttons are held down.
This program demonstrates operation of the microcontroller in low power, stop3, mode. The
program uses the real time interrupt (RTI) to recover from stop3 mode.
In stop3 mode, clocks are halted and only IRQ, KBI, LVI, and RTI interrupts can occur. For
this reason when using the serial debugger, you can not trace through the demo code once
you have reached a stop instruction.
If you are using the serial debugger, you press the go button in the debugger program, and
test 1 is entered (No user switches pressed) you will no longer be able to halt or trace the
demo code. This is because there are no clocks to the serial communications module.
With the Stop3 Demo running, LED1 will flash approximately twice a second. While the LED is
off, the MCU is in low-power, stop3 mode, and will remain in stop3 mode until the next RTI.
RTI is generated periodically by an MCU timer. During Stop3 Demo execution, press and hold
SW1 for at least 0.5sec. LED1 will turn-on for approximately 3 seconds. Pressing SW2 for at
least 0.5sec will cause LED2 to turn-on.
The Software-paced loop demo program executes when SW2 is held down at power-up.
The software-paced loop program blinks LED1 and LED2. LED1 will blink on and off every
second. LED2 will blink on and off every two seconds. Both LEDs blink at a 50% duty cycle.
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