MCP7940N_14 Datasheet, PDF (17/56 Pages) Microchip Technology – Clock output with selectable frequency

MCP7940N
REGISTER 5-2: RTCMIN: TIMEKEEPING MINUTES VALUE REGISTER (ADDRESS 0x01)
U-0
—
bit 7
R/W-0
MINTEN2
R/W-0
MINTEN1
R/W-0
R/W-0
MINTEN0 MINONE3
R/W-0
MINONE2
R/W-0
MINONE1
R/W-0
MINONE0
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
bit 7
bit 6-4
bit 3-0
Unimplemented: Read as ‘0’
MINTEN<2:0>: Binary-Coded Decimal Value of Minute’s Tens Digit
Contains a value from 0 to 5
MINONE<3:0>: Binary-Coded Decimal Value of Minute’s Ones Digit
Contains a value from 0 to 9
REGISTER 5-3: RTCHOUR: TIMEKEEPING HOURS VALUE REGISTER (ADDRESS 0x02)
U-0
—
bit 7
R/W-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 = 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 = 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
 2010-2014 Microchip Technology Inc.
DS20005010F-page 17