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REAL TIME CLOCK MODULE
Calendar register
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Calendar register
Address: 9006 000C
The Calendar register sets the calendar values to the correct values, and reads the
calendar registers. BCD is binary coded decimal.
Register
Register bit
assignment
13 12 11 10 9 8 7 6 5 4 3 2 1 015 14
31 29 28 27 26 25 24 23 22 21 20 19 18 17 1630
Reserved
Reserved
C_T C_U Y_T Y_U
D_U M_UD_T M_T Day
Bits Access Mnemonic Reset Description
D31:30 N/A Reserved N/A N/A
D29:28 R/W C_T 0x0 Century, tens, BCD digit (1-2)
D27:24 R/W C_U 0x0 Century, units, BCD digit (0-9)
D23:20 R/W Y_T 0x0 Years, tens, BCD digit (0-9)
D19:16 R/W Y_U 0x0 Years, units, BCD digit (0-9)
D15:14 N/A Reserved N/A N/A
D13:12 R/W D_T 0x0 Date, tens, BCD digit (0-3)
D11:08 R/W D_U 0x0 Date, units, BCD digit (0-9)
D07 R/W M_T 0x0 Months, tens, BCD digit (0-1)
D06:03 R/W M_U 0x0 Months, units, BCD digit (0-9)
D02:00 R/W Day 0x0 Day of week, units, BCD digit (0-7)