參數(shù)資料
型號(hào)： 935262218112
廠商： NXP SEMICONDUCTORS
元件分類(lèi)： 時(shí)鐘/數(shù)據(jù)恢復(fù)及定時(shí)提取
英文描述： 0 TIMER(S), REAL TIME CLOCK, PDIP8
封裝： 0.300 INCH, PLASTIC, DIP-8
文件頁(yè)數(shù)： 31/32頁(yè)
文件大?。?/td> 711K
代理商： 935262218112
Philips Semiconductors
PCF8563
Real-time clock/calendar
Product specication
16 April 1999
8 of 30
9397 750 04855
Philips Electronics N.V. 1999. All rights reserved.
8.6.3
Seconds, Minutes and Hours registers
8.6.4
Days, Weekdays, Months/Century and Years registers
Table 10: Seconds/VL register bits description (address 02H)
Bit
Symbol
Description
7
VL
VL = 0: reliable clock/calendar information is guaranteed;
VL = 1: reliable clock/calendar information is no longer
guaranteed.
6 to 0
<seconds>
These bits represent the current seconds value coded in BCD
format; value = 00 to 59.
Example: <seconds> = 101 1001, represents the value 59 s.
Table 11: Minutes register bits description (address 03H)
Bit
Symbol
Description
7
not implemented
6 to 0
<minutes>
These bits represent the current minutes value coded in BCD
format; value = 00 to 59.
Table 12: Hours register bits description (address 04H)
Bit
Symbol
Description
7 to 6
not implemented
5 to 0
<hours>
These bits represent the current hours value coded in BCD format;
value=00to23.
Table 13: Days register bits description (address 05H)
Bit
Symbol
Description
7 to 6
not implemented
5 to 0
<days>
These bits represent the current day value coded in BCD format;
value = 01 to 31.
The PCF8563 compensates for leap years by adding a 29th day to
February if the year counter contains a value which is exactly
divisible by 4, including the year ‘00’.
Table 14: Weekdays register bits description (address 06H)
Bit
Symbol
Description
7 to 3
not implemented
2 to 0
<weekdays>
These bits represent the current weekday value 0 to 6;
These bits may be re-assigned by the user.
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