Rainbow Electronics AT73C246 - Manual (Page 45)

45
11050A–PMAAC–07-Apr-10
AT73C246
11.10.5 RTC Calendar Register
Name: RTC_CALR
Access:
Read-write
Address: 0x0C
• CENT: Current Century
The range that can be set is 19 - 20 (BCD).
The lowest four bits encode the units. The higher bits encode the tens.
• YEAR: Current Year
The range that can be set is 00 - 99 (BCD).
The lowest four bits encode the units. The higher bits encode the tens.
• MONTH: Current Month
The range that can be set is 01 - 12 (BCD).
The lowest four bits encode the units. The higher bits encode the tens.
• DAY: Current Day
The range that can be set is 1 - 7 (BCD).
The coding of the number (which number represents which day) is user-defined as it has no effect on the date counter.
• DATE: Current Date
The range that can be set is 01 - 31 (BCD).
The lowest four bits encode the units. The higher bits encode the tens.
All non-significant bits read zero.
31 30 29 28 27 26 25 24
– – DATE
23 22 21 20 19 18 17 16
DAY MONTH
15 14 13 12 11 10 9 8
YEAR
7 6 5 4 3 2 1 0
– CENT