UPD78F0890GK(A)-GAJ-AX NEC, UPD78F0890GK(A)-GAJ-AX Datasheet - Page 276

• Manufacturer Part Number: UPD78F0890GK(A)-GAJ-AX
• Description: 8BIT MCU, 128K FLASH, 7K RAM, LQFP
• Manufacturer: NEC

Specifications of UPD78F0890GK(A)-GAJ-AX

• Controller Family/series: UPD78F
• No. Of I/o's: 55
• Ram Memory Size: 7KB
• Cpu Speed: 20MHz
• No. Of Timers: 10
• No. Of Pwm: RoHS Compliant
• Core Size: 8bit
• Program Memory Size: 128KB
• Oscillator Type: External, Internal

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Cautions 4. The operation of the watchdog timer in the HALT and STOP modes differs as follows
5. The watchdog timer continues its operation during self-programming and EEPROM
In HALT mode
In STOP mode
depending on the set value of bit 0 (LSROSC) of the option byte.
If LSROSC = 0, the watchdog timer resumes counting after the HALT or STOP mode is
released. At this time, the counter is not cleared to 0 but starts counting from the value at
which it was stopped.
If oscillation of the internal low-speed oscillator is stopped by setting LSRSTOP (bit 1 of the
internal oscillator mode register (RCM) = 1) when LSROSC = 0, the watchdog timer stops
operating. At this time, the counter is not cleared to 0.
emulation of the flash memory.
delayed. Set the overflow time and window size taking this delay into consideration.
CHAPTER 11 WATCHDOG TIMER
Watchdog timer operation stops.
Oscillator Can Be Stopped by Software)
LSROSC = 0 (Internal Low-Speed
User’s Manual U17554EJ4V0UD
During processing, the interrupt acknowledge time is
Watchdog timer operation continues.
LSROSC = 1 (Internal Low-Speed
Oscillator Cannot Be Stopped)
TM