QB-78F1026
CHAPTER 2 SETUP PROCEDURE
R20UT0290JJ0100 Rev. 1.00
Page 17 of 29
Sep 30, 2010
(3) Subsystem clock
The clock settings are listed below.
Table 2-2. Settings for Subsystem Clock
Type of Clock to Be Used
Debugger Setting
(a) When the clock generated within the emulator is used
System
(b) When the clock is supplied from the target system
Note
External
Note
This setting is not possible when TARGET LED is not lit.
Remark
Settings other than above are prohibited.
(a) When the clock generated within the emulator is used
Select the “System” in the debugger and select “32.768” [kHz] as the frequency from the drop-down list.
32.768 [kHz]
Remark
“38.400” [kHz] can also be selected from the list, but do not select this frequency; it is not
supported by the device.
(b) When the clock is supplied from the target system
Select the “External” in the debugger. The clock input from the target system is then used.
Oscillation with the resonator on the target system is not supported. To input a clock from the target
system, input to the clock pin (XT2) the square-wave signal with the same voltage potential as that of the
target device supply voltage (V
DD
). Inputting the inverted signal to XT1 is not necessary.
The selectable frequencies are same as those of the target device.
2. 4 Software Settings
For details, see the
ID78K0R-QB Ver. 3.61 Integrated Debugger Operation User's Manual (R20UT0001E)
.
