PCF8564ACX9/B/1,02 NXP Semiconductors, PCF8564ACX9/B/1,02 Datasheet - Page 10

• Manufacturer Part Number: PCF8564ACX9/B/1,02
• Description: IC RTC/CALENDAR
• Manufacturer: NXP Semiconductors
• Type: Clock/Calendar/Alarmr

Specifications of PCF8564ACX9/B/1,02

• Time Format: HH:MM:SS (24 hr)
• Date Format: YY-MM-DD-dd
• Interface: I²C, 2-Wire Serial
• Voltage - Supply: 1 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: Die
• Function: Serial Clock, Alarm, Calendar, Timer, Timer Interrupt
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 1 V
• Mounting Style: SMD/SMT
• Rtc Bus Interface: I2C
• Supply Current: 1700 nA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Memory Size: -
• Lead Free Status / Rohs Status: Supplier Unconfirmed
• Other names: 568-6424-2; PCF8564ACX9/B/1,02

NXP Semiconductors
PCF8564A
Product data sheet
8.4.2 Register Minutes
8.4.3 Register Hours
8.4.4 Register Days
8.4.5 Register Weekdays
The VL flag is intended to detect the situation when V
under battery operation. Should the oscillator stop or V
re-asserted, then the VL flag will be set. This indicates that the time is possibly corrupted.
Table 10.
Table 11.
Table 12.
[1]
Table 13.
Bit
7
6 to 4 MINUTES
3 to 0
Bit
7 to 6 -
5 to 4 HOURS
3 to 0
Bit
7 to 6 -
5 to 4 DAYS
3 to 0
Bit
7 to 3 -
2 to 0 WEEKDAYS
The PCF8564A 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.
Symbol
-
Symbol
Symbol
Symbol
Minutes - minutes register (address 03h) bit description
Hours - hours register (address 04h) bit description
Days - days register (address 05h) bit description
Weekdays - weekdays register (address 06h) bit description
[1]
All information provided in this document is subject to legal disclaimers.
Value
-
0 to 5
0 to 9
Value
-
0 to 2
0 to 9
Value
-
0 to 3
0 to 9
Rev. 02 — 30 September 2010
Value
-
0 to 6
Place value Description
-
ten’s place
unit place
Place value Description
-
ten’s place
unit place
Place value Description
-
ten’s place
unit place
Description
unused
actual weekday values, see
unused
actual minutes coded in BCD format
unused
actual hours coded in BCD format
unused
actual day coded in BCD format
DD
DD
is decreasing slowly, for example
reach V
Real time clock and calendar
Table 14
low
PCF8564A
before power is
© NXP B.V. 2010. All rights reserved.
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