PCF8562TT/2,518 NXP Semiconductors, PCF8562TT/2,518 Datasheet - Page 20

• Manufacturer Part Number: PCF8562TT/2,518
• Description: LCD Drivers LCD DRIVER 32/128SEG
• Manufacturer: NXP Semiconductors

Specifications of PCF8562TT/2,518

• Number Of Digits: 16
• Number Of Segments: 128
• Maximum Clock Frequency: 400 KHz
• Operating Supply Voltage: 1.8 V to 5.5 V
• Maximum Power Dissipation: 400 mW
• Maximum Operating Temperature: + 85 C
• Package / Case: TSSOP-48
• Maximum Supply Current: 20 uA
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 935276218518 PCF8562TT/2-T

NXP Semiconductors
PCF8562_5
Product data sheet
7.16.4 Acknowledge
7.16.5 I
The number of data bytes that can be transferred from transmitter to receiver between the
START and STOP conditions is unlimited. Each byte of eight bits is followed by an
acknowledge bit. The acknowledge bit is a HIGH-level signal on the bus that is asserted
by the transmitter during which time the master generates an extra acknowledge related
clock pulse. An addressed slave receiver must generate an acknowledge after receiving
each byte. Also a master receiver must generate an acknowledge after receiving each
byte that has been clocked out of the slave transmitter. The acknowledging device 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 (see
The PCF8562 acts as an I
transmit data to an I
the acknowledge signals of the selected devices. Device selection depends on the
I
subaddress.
2
2
Fig 13. System configuration
Fig 14. Acknowledgement of the I
C-bus slave address, on the transferred command data and on the hardware
C-bus controller
SCL
SDA
by transmitter
data output
by receiver
data output
TRANSMITTER/
SCL from
RECEIVER
master
MASTER
All information provided in this document is subject to legal disclaimers.
2
condition
START
C-bus master receiver. The only data output from the PCF8562 are
S
Rev. 05 — 19 May 2010
2
RECEIVER
C-bus slave receiver. It does not initiate I
SLAVE
2
1
C-bus
TRANSMITTER/
RECEIVER
Universal LCD driver for low multiplex rates
Figure
SLAVE
2
14).
TRANSMITTER
MASTER
not acknowledge
acknowledge
8
2
acknowledgement
C-bus transfers or
clock pulse for
PCF8562
TRANSMITTER/
© NXP B.V. 2010. All rights reserved.
RECEIVER
MASTER
9
mbc602
mga807
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