Renesas R8C/17 Bedienungsanleitung PDF herunterladen (Seite 19)

5.4. Frequency characteristics

The monitor program operates in the range of the main clock (Xin) frequency which is

shown below. Use an oscillator which has this range of the frequency since the monitor

program may not operate with the frequency other than the following.

1MHz (Min.) to 20MHz (Max.)

Table 3 lists each frequency and communication available speed. However, note that

operation may not be performed when dividing the main clock and using it with 1MHz or

below even in the range of frequency shown above.

Table 3 Communication Available Speed of Each Frequency

Communication Speed (bps) Frequency

1200 2400 4800 9600 19200 38400

20MHz N/A N/A

√ √ √ √

16MHz N/A N/A

√ √ √ √

14MHz N/A N/A

√ √ √ √

12MHz N/A N/A

√ √ √ √

10MHz N/A

√ √ √ √ √

8MHz N/A

√ √ √ √ √

6MHz N/A

√ √ √ √ √

4MHz

√ √ √ √ √

N/A

2MHz

√ √ √ √

N/A N/A

1MHz

√ √ √

N/A N/A N/A

√ : Communication available

N/A : Communication not available

NOTES:

A communication may not be performed depending on the conditions of temperature or

voltage. In this case, use the R8C UART debugger with the lowered communication

speed.

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Renesas R8C/17 Bedienungsanleitung Seite 19