PCF8563PN NXP Semiconductors, PCF8563PN Datasheet - Page 23

• Manufacturer Part Number: PCF8563PN
• Description: Real Time Clock ULTRA LOW POWER CLOCK CALENDAR
• Manufacturer: NXP Semiconductors

Specifications of PCF8563PN

• Function: Clock, Calendar, Alarm, Timer Interrupt
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 1.8 V
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: Through Hole
• Rtc Bus Interface: Serial
• Package / Case: PDIP-8
• Time Format: HH:MM:SS
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: PCF8563P/F4,112

NXP Semiconductors
PCF8563
Product data sheet
9.5.1 Addressing
9.5.2 Clock and calendar READ or WRITE cycles
9.5 I
Before any data is transmitted on the I
addressed first. The addressing is always carried out with the first byte transmitted after
the start procedure.
The PCF8563 acts as a slave receiver or slave transmitter. Therefore the clock signal SCL
is only an input signal, but the data signal SDA is a bidirectional line.
Two slave addresses are reserved for the PCF8563:
The PCF8563 slave address is illustrated in
The I
Figure
which register is to be accessed next. The upper four bits of the register address are not
used.
2
Fig 18. Slave address
Fig 19. Master transmits to slave receiver (WRITE mode)
C-bus protocol
Read: A3h (10100011)
Write: A2h (10100010)
2
C-bus configuration for the different PCF8563 READ and WRITE cycles is shown in
19,
Figure 20
S
SLAVE ADDRESS
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and
Rev. 8 — 18 November 2010
Figure
acknowledgement
R/W
from slave
0 A
1
21. The register address is a 4-bit value that defines
REGISTER ADDRESS A
group 1
0
2
1
C-bus, the device which should respond is
0
Figure
0
acknowledgement
group 2
from slave
0
18.
1
mce189
R/W
n bytes
DATA
Real-time clock/calendar
memory register address
auto increment
acknowledgement
from slave
PCF8563
© NXP B.V. 2010. All rights reserved.
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