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MCP79412 Datasheet(PDF) 20 Page - Microchip Technology

Part # MCP79412
Description  Dual Programmable Alarms
PDF  66 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

MCP79412 Datasheet(HTML) 20 Page - Microchip Technology

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MCP79410/MCP79411/MCP79412
DS20002266H-page 20
 2010-2016 Microchip Technology Inc.
REGISTER 5-6:
RTCMTH: TIMEKEEPING MONTH VALUE REGISTER (ADDRESS 0x05)
U-0
U-0
R-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-1
—
—
LPYR
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 7-6
Unimplemented
: Read as ‘0’
bit 5
LPYR
: Leap Year bit
1
= Year is a leap year
0
= Year is not a leap year
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
REGISTER 5-7:
RTCYEAR: TIMEKEEPING YEAR VALUE REGISTER (ADDRESS 0x06)
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-1
YRTEN3
YRTEN2
YRTEN1
YRTEN0
YRONE3
YRONE2
YRONE1
YRONE0
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 7-4
YRTEN<3:0>
: Binary-Coded Decimal Value of Year’s Tens Digit
Contains a value from 0 to 9
bit 4
YRONE<3:0>
: Binary-Coded Decimal Value of Year’s Ones Digit
Contains a value from 0 to 9
TABLE 5-4:
SUMMARY OF REGISTERS ASSOCIATED WITH TIMEKEEPING
Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Register
on Page
RTCSEC
ST
SECTEN2
SECTEN1
SECTEN0
SECONE3
SECONE2
SECONE1
SECONE0
17
RTCMIN
—
MINTEN2
MINTEN1
MINTEN0
MINONE3
MINONE2
MINONE1
MINONE0
17
RTCHOUR
—
12/24
AM/PM
HRTEN1
HRTEN0
HRONE3
HRONE2
HRONE1
HRONE0
18
RTCWKDAY
—
—
OSCRUN
PWRFAIL
VBATEN
WKDAY2
WKDAY1
WKDAY0
19
RTCDATE
—
—
DATETEN1 DATETEN0 DATEONE3 DATEONE2 DATEONE1 DATEONE0
19
RTCMTH
—
—
LPYR
MTHTEN0
MTHONE3
MTHONE2
MTHONE‘
MTHONE0
20
RTCYEAR
YRTEN3
YRTEN2
YRTEN1
YRTEN0
YRONE3
YRONE2
YRONE1
YRONE0
27
Legend:
— = unimplemented location, read as ‘0’. Shaded cells are not used in timekeeping.



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