UPD78F9222MC(T)-5A4-A NEC, UPD78F9222MC(T)-5A4-A Datasheet - Page 272

• 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

<R>
18.6.2 RESET pin
the reset signal generator on the board, signal collision takes place. To prevent this collision, isolate the connection
with the reset signal generator.
memory will not be correctly programmed. Do not input any signal other than the reset signal of the dedicated flash
memory programmer.
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If the reset signal of the dedicated flash memory programmer is connected to the RESET pin that is connected to
If the reset signal is input from the user system while the flash memory programming mode is set, the flash
Click
Caution The above values are recommended values. Depending on the usage environment these
Table 18-4. Oscillation Frequency and PG-FP5 GUI Software Setting Value Example
2 MHz ≤ f
4 MHz ≤ f
8 MHz ≤ f
9 MHz ≤ f
(Main window)
values may change, so set them after having performed sufficient evaluations.
Oscillation Frequency
X
X
X
X
< 4 MHz
< 8 MHz
< 9 MHz
≤ 10 MHz
Figure 18-5. PG-FP5 GUI Software Setting Example
CHAPTER 18 FLASH MEMORY
User’s Manual U16898EJ5V0UD
8 MHz
9 MHz
10 MHz
8 MHz
PG-FP5 GUI Software Setting Value Example
(Communication Frequency)
(Standard tab in Device setup window)
Set oscillation frequency