PCF8563TF4 NXP Semiconductors, PCF8563TF4 Datasheet - Page 12

• Manufacturer Part Number: PCF8563TF4
• Manufacturer: NXP Semiconductors

Specifications of PCF8563TF4

• Bus Type: Serial (2-Wire, I2C)
• Operating Supply Voltage (typ): 2.5/3.3/5V
• Package Type: SO
• Operating Supply Voltage (max): 5.5V
• Operating Supply Voltage (min): 1.8V
• Operating Temperature Classification: Industrial
• Operating Temperature (max): 85C
• Operating Temperature (min): -40C
• Pin Count: 8
• Mounting: Surface Mount
• Date Format: DW:DM:M:Y
• Time Format: HH:MM:SS
• Lead Free Status / RoHS Status: Compliant

NXP Semiconductors
PCF8563
Product data sheet
8.4.7 Register Years
8.5 Setting and reading the time
Table 17.
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Figure 8
During read/write operations, the time counting circuits (memory locations 02h through
08h) are blocked.
This prevents
After this read/write access is completed, the time circuit is released again and any
pending request to increment the time counters that occurred during the read access is
serviced. A maximum of 1 request can be stored; therefore, all accesses must be
completed within 1 second (see
Bit
7 to 4 YEARS
3 to 0
Fig 8.
•
•
When the register Years overflows from 99 to 00, the century bit C in the register Century_months is
toggled.
Faulty reading of the clock and calendar during a carry condition
Incrementing the time registers, during the read cycle
Symbol
shows the data flow and data dependencies starting from the 1 Hz clock tick.
Data flow for the time function
Years - years register (08h) bit description
All information provided in this document is subject to legal disclaimers.
Rev. 8 — 18 November 2010
LEAP YEAR
CALCULATION
Value
0 to 9
0 to 9
Figure
Place value Description
ten’s place
unit place
9).
SECONDS
MINUTES
MONTHS
1 Hz tick
HOURS
YEARS
DAYS
C
actual year coded in BCD format
WEEKDAY
013aaa092
Real-time clock/calendar
PCF8563
© NXP B.V. 2010. All rights reserved.
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