UPD78F9222MC(T)-5A4-A NEC, UPD78F9222MC(T)-5A4-A Datasheet - Page 326

• Manufacturer Part Number: UPD78F9222MC(T)-5A4-A
• Description: 8BIT MCU, 4K FLASH, 256B RAM, 78F9222
• Manufacturer: NEC

Specifications of UPD78F9222MC(T)-5A4-A

• Controller Family/series: UPD78
• No. Of I/o's: 17
• Ram Memory Size: 256Byte
• Cpu Speed: 10MHz
• No. Of Timers: 4
• No. Of: RoHS Compliant
• Core Size: 8bit
• Program Memory Size: 4KB
• Oscillator Type: External, Internal

19.1.2 Connection of X1 and X2 pins
326
Caution If debugging is performed with a real machine running, without using QB-MINI2, write the user
program) and when programming is performed with the QB-Programmer.
The X1 and X2 pins are used when the debugger is started for the first time (when downloading the monitor
Figure 19-5. Circuit Connection for the Case Where X1 and X2 Pins Are Used in Target System
Figure 19-4. Circuit Connection for the Case Where QB-MINI2 Is Used for Debugging and
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.
Debugging of INTP3 Pin Is Performed Only with Real Machine
Target connector
Target connector
* Jumper setting
* Jumper setting
INTP
CHAPTER 19 ON-CHIP DEBUG FUNCTION
When debugging with QB-MINI2 connected:
Other than above:
X2
X1
When debugger is started for the first time
(downloading the monitor program) or when
programming is performed with QB-Programmer:
Other than above:
3
9
12
User’s Manual U16898EJ5V0UD
1
2
3
1
2
3
V
DD
1 kΩ
1
2
3
External components
X2
X1
INTP3
External device
I/O to INTP3
Oscillator or
external device
Target device
Target device
1-2 shorted
2-3 shorted
1-2 shorted
2-3 shorted