UPD78F0413GA-GAM-AX NEC, UPD78F0413GA-GAM-AX Datasheet - Page 272

• Manufacturer Part Number: UPD78F0413GA-GAM-AX
• Description: 8BIT UC, 32K FLASH, 1KB RAM, LCD
• Manufacturer: NEC

Specifications of UPD78F0413GA-GAM-AX

• Controller Family/series: UPD78F
• No. Of I/o's: 30
• Ram Memory Size: 1024Byte
• Cpu Speed: 10MHz
• No. Of Timers: 8
• No. Of Pwm: RoHS Compliant
• Core Size: 8bit
• Program Memory Size: 32KB
• Oscillator Type: External, Internal

272
Address: FF67H
Address: FF68H
MONTH
(11) Month count register (MONTH)
(12) Year count register (YEAR)
Symbol
Symbol
YEAR
The MONTH register is an 8-bit register that takes a value of 1 to 12 (decimal) and indicates the count value
of months.
It counts up when the day counter overflows.
When data is written to this register, it is written to a buffer and then to the counter up to 2 clocks (32.768 kHz)
later. Set a decimal value of 01 to 12 to this register in BCD code. If a value outside this range is set, the
register value returns to the normal value after 1 period.
MONTH can be set by an 8-bit memory manipulation instruction.
Reset signal generation clears this register to 01H.
The YEAR register is an 8-bit register that takes a value of 0 to 99 (decimal) and indicates the count value of
years.
It counts up when the month counter overflows.
Values 00, 04, 08, …, 92, and 96 indicate a leap year.
When data is written to this register, it is written to a buffer and then to the counter up to 2 clocks (32.768 kHz)
later. Set a decimal value of 00 to 99 to this register in BCD code. If a value outside this range is set, the
register value returns to the normal value after 1 period.
YEAR can be set by an 8-bit memory manipulation instruction.
Reset signal generation clears this register to 00H.
YEAR80
After reset: 01H
After reset: 00H
7
0
7
YEAR40
Figure 9-12. Format of Month Count Register (MONTH)
Figure 9-13. Format of Year Count Register (YEAR)
6
0
6
R/W
R/W
CHAPTER 9 REAL-TIME COUNTER
YEAR20
5
0
5
User’s Manual U18698EJ1V0UD
MONTH10
YEAR10
4
4
MONTH8
YEAR8
3
3
MONTH4
YEAR4
2
2
MONTH2
YEAR2
1
1
MONTH1
YEAR1
0
0