PCF2123TS/1.118 NXP Semiconductors, PCF2123TS/1.118 Datasheet - Page 16
PCF2123TS/1.118
Manufacturer Part Number
PCF2123TS/1.118
Description
Manufacturer
NXP Semiconductors
Datasheet
1.PCF2123TS1.118.pdf
(61 pages)
Specifications of PCF2123TS/1.118
Bus Type
Serial (3-Wire, SPI)
Package Type
TSSOP
Operating Supply Voltage (max)
5.5V
Operating Temperature Classification
Industrial
Operating Temperature (max)
85C
Operating Temperature (min)
-40C
Mounting
Surface Mount
Date Format
DW:DM:M:Y
Time Format
HH:MM:SS
Lead Free Status / RoHS Status
Compliant
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NXP Semiconductors
PCF2123
Product data sheet
8.4.7 Register Years
8.4.8 Setting and reading the time
Table 16.
Table 17.
Figure 10
Month
January
February
March
April
May
June
July
August
September
October
November
December
Bit
7 to 4
3 to 0
Fig 10. Data flow of the time function
Symbol
YEARS
shows the data flow and data dependencies starting from the 1 Hz clock tick.
Month assignments in BCD format
Years - years register (08h) bit description
Upper-digit
(ten’s place)
Bit 4
0
0
0
0
0
0
0
0
0
1
1
1
All information provided in this document is subject to legal disclaimers.
Rev. 03 — 5 October 2010
12_24 hour mode
CALCULATION
LEAP YEAR
Digit (unit place)
Bit 3
0
0
0
0
0
0
0
1
1
0
0
0
Value
0 to 9
0 to 9
SECONDS
MINUTES
MONTHS
1 Hz tick
HOURS
YEARS
DAYS
Bit 2
0
0
0
1
1
1
1
0
0
0
0
0
Place value Description
ten’s place
unit place
WEEKDAY
actual year coded in BCD format
SPI Real time clock/calendar
001aaf901
Bit 1
0
1
1
0
0
1
1
0
0
0
0
1
PCF2123
© NXP B.V. 2010. All rights reserved.
Bit 0
1
0
1
0
1
0
1
0
1
0
1
0
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