Datasheet

CHAPTER 17 ON-CHIP DEBUG FUNCTION
User’s Manual U18172EJ3V0UD
282
Figure 17-4. Circuit Connection for the Case Where QB-MINI2 Is Used for Debugging and
Debugging of INTP1 Pin Is Performed Only with Real Machine
INTP1
Target connector
Target device
INTP
1 kΩ
12
2
3
1
I/O to INTP1
External device
V
DD
* Jumper setting
When debugging with QB-MINI2 connected: 1-2 shorted
Other than above: 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.
17.1.2 Connection of X1 and X2 pins
The X1
Note 1
, X2
Note 2
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.
Notes 1.
μ PD78F920x: X1/P23/ANI3, μ PD78F950x: EXCLK/P23
2. μ PD78F920x: X2/P22/ANI2, μ PD78F950x: P22
Figure 17-5. Circuit Connection for the Case Where X1 and X2 Pins Are Used in Target System
X2
Target connector
Target device
X2
3
2
3
1
X1
2
3
1
X1
External components
Oscillator or
external device
9
μPD78F920x: X2
μPD78F950x: P22
μPD78F920x: X1
μPD78F950x: EXCLK
* 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
<R>
<R>