PCF8593T NXP Semiconductors, PCF8593T Datasheet - Page 15

• Manufacturer Part Number: PCF8593T
• Manufacturer: NXP Semiconductors

Specifications of PCF8593T

• Bus Type: Serial (I2C)
• User Ram: 8Byte
• Package Type: SO
• Operating Supply Voltage (max): 6V
• 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:hh
• Lead Free Status / RoHS Status: Compliant

NXP Semiconductors
PCF8593
Product data sheet
Fig 16. System configuration
SCL
SDA
8.1.4 Acknowledge
TRANSMITTER
RECEIVER
MASTER
The number of data bytes transferred between the START and STOP conditions from
transmitter to receiver is unlimited. Each byte of eight bits is followed by an acknowledge
cycle.
Acknowledgement on the I
Fig 17. Acknowledgement on the I
•
•
•
•
A slave receiver, which is addressed, must generate an acknowledge after the
reception of each byte.
Also a master receiver must generate an acknowledge after the reception of each
byte that has been clocked out of the slave transmitter.
The device that acknowledges must pull-down the SDA line during the acknowledge
clock pulse, so that the SDA line is stable LOW during the HIGH period of the
acknowledge related clock pulse (set-up and hold times must be taken into
consideration).
A master receiver must signal an end of data to the transmitter by not generating an
acknowledge on the last byte that has been clocked out of the slave. In this event, the
transmitter must leave the data line HIGH to enable the master to generate a STOP
condition.
by transmitter
data output
by receiver
data output
SCL from
master
RECEIVER
SLAVE
All information provided in this document is subject to legal disclaimers.
condition
START
Rev. 04 — 6 October 2010
S
2
C-bus is illustrated in
TRANSMITTER
RECEIVER
SLAVE
1
2
C-bus
2
TRANSMITTER
Figure
MASTER
17.
Low power clock and calendar
not acknowledge
acknowledge
8
TRANSMITTER
RECEIVER
MASTER
acknowledgement
clock pulse for
PCF8593
© NXP B.V. 2010. All rights reserved.
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