UPD78F9222MC(T)-5A4-A NEC, UPD78F9222MC(T)-5A4-A Datasheet - Page 326
UPD78F9222MC(T)-5A4-A
Manufacturer Part Number
UPD78F9222MC(T)-5A4-A
Description
8BIT MCU, 4K FLASH, 256B RAM, 78F9222
Manufacturer
NEC
Datasheet
1.UPD78F9222MCT-5A4-A.pdf
(414 pages)
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
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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
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