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MCP79400 Datasheet(PDF) 16 Page - Microchip Technology

Part # MCP79400
Description  Battery-Backed I2C Real-Time Clock/Calendar with SRAM and Protected EEPROM
PDF  62 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

MCP79400 Datasheet(HTML) 16 Page - Microchip Technology

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MCP79400/MCP79401/MCP79402
DS20005009F-page 16
 2011-2016 Microchip Technology Inc.
REGISTER 5-1:
RTCSEC: TIMEKEEPING SECONDS VALUE REGISTER (ADDRESS 0x00)
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
ST
SECTEN2
SECTEN1
SECTEN0
SECONE3
SECONE2
SECONE1
SECONE0
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
ST:
Start Oscillator bit
1
= Oscillator enabled
0
= Oscillator disabled
bit 6-4
SECTEN<2:0>:
Binary-Coded Decimal Value of Second’s Tens Digit
Contains a value from 0 to 5
bit 3-0
SECONE<3:0>:
Binary-Coded Decimal Value of Second’s Ones Digit
Contains a value from 0 to 9
REGISTER 5-2:
RTCMIN: TIMEKEEPING MINUTES VALUE REGISTER (ADDRESS 0x01)
U-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
—
MINTEN2
MINTEN1
MINTEN0
MINONE3
MINONE2
MINONE1
MINONE0
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
Unimplemented:
Read as ‘0’
bit 6-4
MINTEN<2:0>:
Binary-Coded Decimal Value of Minute’s Tens Digit
Contains a value from 0 to 5
bit 3-0
MINONE<3:0>:
Binary-Coded Decimal Value of Minute’s Ones Digit
Contains a value from 0 to 9



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