L1C datasheet(20/42 Pages) RENESAS

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QB-RL78L1C In-Circuit Emulator

CHAPTER 2

SETUP PROCEDURE

R20UT2703EJ0200

Rev.2.00

Page 20 of 42

Jan 31, 2014

(1) High-speed system clock

The clock settings are listed below.

Table 2-2.

Settings for High-Speed System Clock

Type of Clock to Be Used

OSC1

(a) When the clock generated within the emulator is used

–

(b) When the clock (a square wave) is supplied from the target system

Note

–

Oscillator mounted

Note This setting is not possible when TARGET LED is not lit.

Remarks 1. Settings other than the above are prohibited.

2. Selection of (a) or (b) is possible regardless of whether the oscillator is not mounted in the OSC1

socket.

(a) When the clock generated within the emulator is used

This method uses the clock generated inside the emulator.

The oscillation frequency that will be used must be set in the debugger. For details about how to set the

oscillation frequency, check the user's manual for the debugger that will be used.

(b) When the clock (a square wave) is supplied from the target system

The clock input from the target system is then used.

To input a clock from the target system, input to the clock pin (X2) the square-wave signal with the same

voltage potential as that of the target device supply voltage (VDD).

Inputting the inverted signal to X1 is not

necessary.

The selectable frequencies are same as those of the target device.

For debugger settings, check the user's manual for the debugger that will be used. Oscillation by a resonator

in the target system is not supported.

Mount an oscillator in the OSC1 socket in the emulator and then select the “Clock socket” in the debugger.

The clock generated from the oscillator mounted on the emulator is used.

The selectable frequencies are same as those of the target device.

To modify the clock setting, the acrylic board on the bottom of the QB-RL78L1C must be removed.

The acrylic board can be removed by lifting it up.

For debugger settings, check the user's manual for the debugger that will be used.

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