UPD78F9234MC-5A4-A Datasheet, PDF (334/419 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

CHAPTER 20 ON-CHIP DEBUG FUNCTION
Figure 20-4. Circuit Connection for the Case Where QB-MINI2 Is Used for Debugging and
Debugging of INTP3 Pin Is Performed Only with Real Machine
VDD
Target connector
12
INTP
1 kΩ
1
2
3
Target device
INTP3
External device
I/O to INTP3
* Jumper setting
When debugging with QB-MINI2 connected:
Other than above:
1-2 shorted
2-3 shorted
Caution If debugging is performed with a real machine running, without using QB-MINI2, write the user
program using the QB-Programmer. Programs downloaded by the debugger include the monitor
program, and such a program malfunctions if it is not controlled via QB-MINI2.
20.1.2 Connection of X1 and X2 pins
The X1 and X2 pins are used when the debugger is started for the first time (when downloading the monitor
program) and when programming is performed with the QB-Programmer.
Figure 20-5. Circuit Connection for the Case Where X1 and X2 Pins Are Used in Target System
Target connector
3
1
X2
2
3
9
1
X1
2
3
Target device
X2
X1
External components
Oscillator or
external device
* Jumper setting
When debugger is started for the first time
(downloading the monitor program) or when
programming is performed with QB-Programmer: 1-2 shorted
Other than above:
2-3 shorted
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User’s Manual U17446EJ5V0UD