MCP79410_16 Datasheet, PDF (23/66 Pages) Microchip Technology – Dual Programmable Alarms

MCP79410/MCP79411/MCP79412
REGISTER 5-10: ALMxHOUR: ALARM0/1 HOURS VALUE REGISTER (ADDRESSES 0x0C/0x13)
U-0
—
bit 7
R-0
12/24
R/W-0
AM/PM
HRTEN1
R/W-0
HRTEN0
R/W-0
HRONE3
R/W-0
HRONE2
R/W-0
HRONE1
R/W-0
HRONE0
bit 0
Legend:
R = Readable bit
-n = Value at POR
W = Writable bit
‘1’ = Bit is set
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is clear
x = Bit is unknown
If 12/24 = 1 (12-hour format):
bit 7
Unimplemented: Read as ‘0’
bit 6
12/24: 12 or 24 Hour Time Format bit⁽¹⁾
1 = 12-hour format
0 = 24-hour format
bit 5
AM/PM: AM/PM Indicator bit
1 = PM
0 = AM
bit 4
HRTEN0: Binary-Coded Decimal Value of Hour’s Tens Digit
Contains a value from 0 to 1
bit 3-0
HRONE<3:0>: Binary-Coded Decimal Value of Hour’s Ones Digit
Contains a value from 0 to 9
If 12/24 = 0 (24-hour format):
bit 7
Unimplemented: Read as ‘0’
bit 6
12/24: 12 or 24 Hour Time Format bit⁽¹⁾
1 = 12-hour format
0 = 24-hour format
bit 5-4
HRTEN<1:0>: Binary-Coded Decimal Value of Hour’s Tens Digit
Contains a value from 0 to 2.
bit 3-0
HRONE<3:0>: Binary-Coded Decimal Value of Hour’s Ones Digit
Contains a value from 0 to 9
Note 1: This bit is read-only and reflects the value of the 12/24 bit in the RTCHOUR register.
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DS20002266H-page 23