Datasheet

MCP7940N
DS20005010F-page 24  2010-2014 Microchip Technology Inc.
TABLE 5-6: SUMMARY OF REGISTERS ASSOCIATED WITH ALARMS
REGISTER 5-13: ALMxMTH: ALARM0/1 MONTH VALUE REGISTER (ADDRESSES 0x0F/0x16)
U-0 U-0 U-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-1
— — — MTHTEN0 MTHONE3 MTHONE2 MTHONE1 MTHONE0
bit 7 bit 0
Legend:
R = Readable bit W = Writable bit U = Unimplemented bit, read as ‘0’
-n = Value at POR ‘1’ = Bit is set ‘0’ = Bit is clear x = Bit is unknown
bit 7-5 Unimplemented: Read as ‘0’
bit 4 MTHTEN0: Binary-Coded Decimal Value of Month’s Tens Digit
Contains a value of 0 or 1
bit 3-0 MTHONE<3:0>: Binary-Coded Decimal Value of Month’s Ones Digit
Contains a value from 0 to 9
Name Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
Register
on Page
ALM0SEC
— SECTEN2 SECTEN1 SECTEN0 SECONE3 SECONE2 SECONE1 SECONE0
21
ALM0MIN
— MINTEN2 MINTEN1 MINTEN0 MINONE3 MINONE2 MINONE1 MINONE0
21
ALM0HOUR
—12/24AM/PM
HRTEN1
HRTEN0 HRONE3 HRONE2 HRONE1 HRONE0
22
ALM0WKDAY
ALMPOL ALM0MSK2 ALM0MSK1 ALM0MSK0 ALM0IF WKDAY2 WKDAY1 WKDAY0
23
ALM0DATE
— — DATETEN1 DATETEN0 DATEONE3 DATEONE2 DATEONE1 DATEONE0
23
ALM0MTH
— — — MTHTEN0 MTHONE3 MTHONE2 MTHONE1 MTHONE0
24
ALM1SEC
— SECTEN2 SECTEN1 SECTEN0 SECONE3 SECONE2 SECONE1 SECONE0
21
ALM1MIN
— MINTEN2 MINTEN1 MINTEN0 MINONE3 MINONE2 MINONE1 MINONE0
21
ALM1HOUR
—12/24AM/PM
HRTEN1
HRTEN0 HRONE3 HRONE2 HRONE1 HRONE0
22
ALM1WKDAY
ALMPOL ALM1MSK2 ALM1MSK1 ALM1MSK0 ALM1IF WKDAY2 WKDAY1 WKDAY0
23
ALM1DATE
— — DATETEN1 DATETEN0 DATEONE3 DATEONE2 DATEONE1 DATEONE0
23
ALM1MTH
— — — MTHTEN0 MTHONE3 MTHONE2 MTHONE1 MTHONE0
24
CONTROL
OUT SQWEN ALM1EN ALM0EN EXTOSC CRSTRIM SQWFS1 SQWFS0
26
Legend: — = unimplemented location, read as ‘0’. Shaded cells are not used by alarms.