PK-HCS08GB60 SofTec Microsystems SRL, PK-HCS08GB60 Datasheet - Page 29

• Manufacturer Part Number: PK-HCS08GB60
• Description: KIT STARTER USB FOR MC9S08GB60
• Manufacturer: SofTec Microsystems SRL
• Type: MCUr

Specifications of PK-HCS08GB60

• Contents: Board, Cable, Software, Datasheets and User Manual
• Silicon Manufacturer: Freescale
• Core Architecture: HCS08
• Kit Contents: Emulator/Programmer
• Mc9s08gb60 Evaluation Board: Silicon Family Name
• Silicon Core Number: MC9S08GB60
• Core Sub-architecture: HCS08
• Silicon Family Name: S08GB
• Rohs Compliant: No
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• For Use With/related Products: Freescale MC9S08GB60 (USB)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant, Contains lead / RoHS non-compliant
• Other names: 520-1014

4. Debugging Features
STOP Assembly Instruction
If the STOPE bit in the SOPT register is not set, the STOP instruction is recognized as an
illegal opcode, causing the microcontroller to reset. The SOPT register can be written only
once after reset.
Real-Time Memory Update
During program execution, it is possible to view/edit the contents of the Memory window and
Data window in real time (edit operations are only available for RAM locations and
peripheral registers). For example, it is possible to set the periodical refresh of the Memory
window contents by choosing Mode > Periodical from the pop-up menu which appears by
right-clicking on the Memory window.
FLL Usage
4
The host PC communicates with the microcontroller through the “USB to BDM INTERFACE”
circuitry (which features an asynchronous BDM communication to the MC9S08GB60
microcontroller). The BDM communication speed depends on a clock source which, in turn,
is selected by the CLKSW bit in the Status register. If the CLKSW bit is set to 1, the BDM
communication clock source is the microcontroller’s bus frequency; if the CLKSW bit is set
to 0, the BDM communication clock source is a constant clock source (in the case of the
MC9S08GB60, a 8 MHz internal clock).
PK-HCS08GB60 always sets the CLKSW bit to 0: you are therefore free to change the
microcontroller’s bus frequency through the FLL, since this will not affect the BDM
communication.
Hardware Breakpoints and Software Breakpoints
A “hardware” breakpoint is set by taking advantage of the microcontroller’s integrated debug
peripheral. A hardware breakpoint doesn’t waste system resources, you can set/remove
them at any time (even during program execution), but the number of available hardware
breakpoints is limited.
A “software” breakpoint, on the other hand, does not take advantage of the microcontroller’s
integrated debug peripheral.
To set a software breakpoints, there are two possibilities: you can set a software breakpoint
in RAM or in FLASH. In both cases, an unlimited number of software breakpoints can be
set.
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