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MCP79400 数据表(PDF) 19 Page - Microchip Technology |
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MCP79400 数据表(HTML) 19 Page - Microchip Technology |
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19 / 62 page  2011-2016 Microchip Technology Inc. DS20005009F-page 19 MCP79400/MCP79401/MCP79402 TABLE 5-4: SUMMARY OF REGISTERS ASSOCIATED WITH TIMEKEEPING 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 3-0 YRONE<3:0>: Binary-Coded Decimal Value of Year’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 RTCSEC ST SECTEN2 SECTEN1 SECTEN0 SECONE3 SECONE2 SECONE1 SECONE0 16 RTCMIN — MINTEN2 MINTEN1 MINTEN0 MINONE3 MINONE2 MINONE1 MINONE0 16 RTCHOUR — 12/24 AM/PM HRTEN1 HRTEN0 HRONE3 HRONE2 HRONE1 HRONE0 17 RTCWKDAY — — OSCRUN PWRFAIL VBATEN WKDAY2 WKDAY1 WKDAY0 18 RTCDATE — — DATETEN1 DATETEN0 DATEONE3 DATEONE2 DATEONE1 DATEONE0 18 RTCMTH — — LPYR MTHTEN0 MTHONE3 MTHONE2 MTHONE1 MTHONE0 19 RTCYEAR YRTEN3 YRTEN2 YRTEN1 YRTEN0 YRONE3 YRONE2 YRONE1 YRONE0 19 Legend: — = unimplemented location, read as ‘0’. Shaded cells are not used in timekeeping. |
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