Freescale Semiconductor Microcontrollers, Manual

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HC08 FSICEBASE Emulator
Specifying a Memory Map
418 Microcontrollers Debugger Manual
Figure 17.8 Target Signals Dialog Box
4. Specify clock source. From MCU Clock section of dialog box, select whether the
clock is connected externally, on a connected emulator module (EM), or FSICE
Generated.
5. Specify clock speed if internally generated
a. If you selected FSICE Generated , select the clock speed to be emulated
b. If you selected Custom , type clock speed in Custom text box
NOTE If you specify a custom clock speed, be aware that the FSICEBASE can
provide clock speeds from 4100Hz to 40MHz in steps of 5kHz. The
FSICEBASE uses a clock synthesis chip to generate the clock speed. This
method is not as accurate as a crystal: only within about 0.75% absolute
frequency with about 5% jitter. If you choose a clock value (either from one of
the radio buttons or by typing it in) that is an integer divisor of 32MHz or
9.8304MHz, you get an accurate crystal-sourced clock.
6. Click OK
The debugger instructs the FSICEBASE to use new clock information. The Command
window (
Figure 17.9 ) of the debugger shows confirmation message.
Figure 17.9 Confirmation Message in Command Window