UPD78F9222MC(T)-5A4-A NEC, UPD78F9222MC(T)-5A4-A Datasheet - Page 83

• 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

Note The clock source of the watchdog timer (WDT) is selected from f
refer to CHAPTER 9 WATCHDOG TIMER.
Clock source of
WDT is selected
by software
LSRSTOP = 1
Figure 5-14. Status Transition of Low-Speed Internal Oscillation
Note
Can be stopped
oscillator can be stopped
Low-speed internal
Low-speed internal
oscillator stops
CHAPTER 5 CLOCK GENERATORS
User’s Manual U16898EJ5V0UD
LSRSTOP = 0
if low-speed internal oscillator
can be stopped or not
Select by option byte
power-on-clear
Reset by
application
Power
V
DD
> 2.1 V (TYP.)
oscillator cannot be stopped
Low-speed internal
X
Cannot be stopped
or f
RL
, or it may be stopped. For details,
Reset signal
Clock source of
WDT is fixed to f
RL
83