Micro crystal RV-8063-C7, Applications Manual

Page: 16 / 58

Micro Crystal
Ultra Small Real-Time Clock Module with SPI-Bus Interface RV-8063-C7
October 2018 16/58 Rev. 1.1
09h - Month
This register holds the current month, in two binary coded decimal (BCD) digits. Values will range from 01 to 12.
Address Function Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
09h
Month X X X 10 8 4 2 1
Reset 0 0 0 0 0 0 0 1
Bit Symbol Value Description
7:5 X 0 Unused
4:0 Month 01 to 12 Holds the current month, coded in BCD format.
Month Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
January
– Default value
0 0 0
0 0 0 0 1
February 0 0 0 1 0
March 0 0 0 1 1
April 0 0 1 0 0
May 0 0 1 0 1
June 0 0 1 1 0
July 0 0 1 1 1
August 0 1 0 0 0
September 0 1 0 0 1
October 1 0 0 0 0
November 1 0 0 0 1
December 1 0 0 1 0
0Ah - Year
This register holds the current year, in two binary coded decimal (BCD) digits. Values will range from 00 to 99.
Leap years are correctly handled from 2000 to 2099.
Address Function Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
0Ah
Year 80 40 20 10 8 4 2 1
Reset 0 0 0 0 0 0 0 0
Bit Symbol Value Description
7:0 Year 00 to 99 Holds the current year, coded in BCD format.