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PCF8564ACX9/1 Datenblatt(PDF) 11 Page - NXP Semiconductors

Teilenummer PCF8564ACX9/1
Bauteilbeschribung  Real time clock and calendar
PDF  44 Pages
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Hersteller  NXP [NXP Semiconductors]
Direct Link  http://www.nxp.com
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PCF8564ACX9/1 Datenblatt(HTML) 11 Page - NXP Semiconductors

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PCF8564A_1
© NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 1 — 8 October 2009
11 of 44
NXP Semiconductors
PCF8564A
Real time clock and calendar
[1]
Definition may be re-assigned by the user.
8.4.6 Register Months
[1]
This bit may be re-assigned by the user.
[2]
This bit is toggled when the register Years overflows from 99 to 00.
Table 14.
Weekday assignments
Day[1]
Bit
2
1
0
Sunday
0
0
0
Monday
0
0
1
Tuesday
0
1
0
Wednesday
0
1
1
Thursday
1
0
0
Friday
1
0
1
Saturday
1
1
0
Table 15.
Months - months and century flag register (address 07h) bit description
Bit
Symbol
Value
Place value Description
7C[1]
0[2]
-
indicates the century is x
1
-
indicates the century isx+1
6 to 5 -
-
-
unused
4
MONTHS
0 to 1
ten’s place
actual month coded in BCD format, see Table 16
3 to 0
0 to 9
unit place
Table 16.
Month assignments coded in BCD format
Month
Upper-digit
(ten’s place)
Digit (unit place)
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
January
0
0
0
0
1
February
0
0
0
1
0
March
0
0
0
1
1
April
0
0
1
0
0
May
0
0101
June
00110
July
00111
August
0
1
0
0
0
September
0
1
0
0
1
October
1
0
0
0
0
November
1
0
0
0
1
December
1
0
0
1
0



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