RS5C313 RICOH Co.,Ltd., RS5C313 Datasheet - Page 13

• Manufacturer Part Number: RS5C313
• Description: Ultra-compact Real-time Clock Ic
• Manufacturer: RICOH Co.,Ltd.

3.3 Calendar Counter (at 8h to Dh)
MO
1) The “
2) The automatic calendar function provides the following calendar digit displays in BCD code:
3) Any registered imaginary time should be replaced with actual time as carrying to such registered imaginary time digits from
Y
D3
D
Y
*
*
80
8
8
8
lower-order ones cause the clock counter to malfunction.
*
” mark in the above table indicates data which are set to 0 for read cycle and not set for write cycle.
MO
Day digits:
Month digits:
Year digits:
Y
D2
D
Y
*
*
40
4
4
4
MO
D
Y
D1
D
Y
*
20
20
2
2
2
Range from 1 to 31 (for January, March, May, July, August, October, and December).
Range from 1 to 30 (for April, June, September, and November).
Range from 1 to 29 (for February in leap years).
Range from 1 to 28 (for February in ordinary years).
Carried to month digits when cycled to 1.
Range from 1 to 12 and carried to year digits when cycled to 1.
Range from 00 to 99 and counted as 00, 04, 08, - - - -- -, 92, and 96 in leap years.
MO
MO
D
Y
D0
D
Y
10
10
1
1
10
1
(read and write cycle) 1-day calendar digit
(read and write cycle) 10-day calendar digit
(read and write cycle) 1-month calendar digit (at Ah)
(read and write cycle) 10-month calendar digit (at Bh)
(read and write cycle) 1-year calendar digit
(read and write cycle) 10-year calendar digit
(at 8h)
(at 9h)
(at Ch)
(at Dh)
RS5C313
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