PCF210AA NXP [NXP Semiconductors], PCF210AA Datasheet - Page 14
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PCF210AA
Manufacturer Part Number
PCF210AA
Description
SPI Real time clock/calendar Time keeping application
Manufacturer
NXP [NXP Semiconductors]
Datasheet
1.PCF210AA.pdf
(63 pages)
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NXP Semiconductors
PCF2123
Product data sheet
8.4.4 Register Days
8.4.5 Register Weekdays
8.4.6 Register Months
Table 12.
[1]
Table 13.
Table 14.
[1]
Table 15.
Bit
7 to 6
5 to 4
3 to 0
Bit
7 to 3
2 to 0
Day
Sunday
Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
Bit
7 to 5
4
3 to 0
The PCF2123 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.
Definition may be re-assigned by the user.
[1]
Symbol
-
DAYS
Symbol
-
WEEKDAYS
Symbol
-
MONTHS
Days - days register (address 05h) bit description
Weekdays - weekdays register (address 06h) bit description
Weekday assignments
Months - months register (address 07h) bit description
[1]
All information provided in this document is subject to legal disclaimers.
Bit
2
0
0
0
0
1
1
1
Rev. 5 — 27 April 2011
Value
-
0 to 3
0 to 9
Value
-
0 to 6
Value
-
0 to 1
0 to 9
1
0
0
1
1
0
0
1
Place value Description
-
ten’s place
unit place
Description
unused
actual weekday values, see
Place value Description
-
ten’s place
unit place
unused
actual day coded in BCD format
unused
actual month coded in BCD
format, see
SPI Real time clock/calendar
0
0
1
0
1
0
1
0
Table 16
PCF2123
Table 14
© NXP B.V. 2011. All rights reserved.
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