UPD78F0413GA-GAM-AX NEC, UPD78F0413GA-GAM-AX Datasheet - Page 271

• 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

Address: FF66H
Address: FF65H
(9) Day count register (DAY)
(10) Week count register (WEEK)
Symbol
Symbol
WEEK
DAY
The DAY register is an 8-bit register that takes a value of 1 to 31 (decimal) and indicates the count value of
days.
It counts up when the hour counter overflows.
This counter counts as follows.
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 31 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.
DAY can be set by an 8-bit memory manipulation instruction.
Reset signal generation clears this register to 01H.
The WEEK register is an 8-bit register that takes a value of 0 to 6 (decimal) and indicates the count value of
weekdays.
It counts up in synchronization with the day counter.
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 06 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.
WEEK can be set by an 8-bit memory manipulation instruction.
Reset signal generation clears this register to 00H.
01 to 31 (January, March, May, July, August, October, December)
01 to 30 (April, June, September, November)
01 to 29 (February, leap year)
01 to 28 (February, normal year)
After reset: 01H
After reset: 00H
7
7
0
0
Figure 9-11. Format of Week Count Register (WEEK)
6
0
6
0
Figure 9-10. Format of Day Count Register (DAY)
R/W
R/W
CHAPTER 9 REAL-TIME COUNTER
DAY20
5
5
0
User’s Manual U18698EJ1V0UD
DAY10
4
4
0
DAY8
3
3
0
WEEK4
DAY4
2
2
WEEK2
DAY2
1
1
WEEK1
DAY1
0
0
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