PCF8566T NXP Semiconductors, PCF8566T Datasheet - Page 23

• Manufacturer Part Number: PCF8566T
• Manufacturer: NXP Semiconductors

Specifications of PCF8566T

• Operating Supply Voltage (typ): 3.3/5V
• Number Of Digits: 12
• Number Of Segments: 96
• Operating Temperature (min): -40C
• Operating Temperature (max): 85C
• Operating Temperature Classification: Industrial
• Package Type: VSO
• Pin Count: 40
• Mounting: Surface Mount
• Power Dissipation: 400mW
• Frequency (max): 315KHz
• Operating Supply Voltage (min): 2.5V
• Operating Supply Voltage (max): 6V
• Lead Free Status / Rohs Status: Not Compliant

NXP Semiconductors
PCF8566_7
Product data sheet
Two displays controlled by PCF8566 can be recognized on the same I
allows:
The I
condition (S) from the I
addresses. All PCF8566s with the same SA0 level acknowledge in parallel to the slave
address. All PCF8566s with the alternative SA0 level ignore the whole I
After acknowledgement, one or more command bytes (m) follow which define the status of
the addressed PCF8566s. The last command byte is tagged with a cleared most
significant bit, the continuation bit C. The command bytes are also acknowledged by all
addressed PCF8566s on the bus.
After the last command byte, a series of display data bytes (n) may follow. These display
bytes are stored in the display RAM at the address specified by the data pointer and the
subaddress counter. Both data pointer and subaddress counter are automatically updated
and the data is directed to the intended PCF8566 device.
The acknowledgement after each byte is made only by the (A0, A1 and A2) addressed
PCF8566. After the last display byte, the I
Fig 16. Slave address structure
Fig 17. I
•
•
Up to 16 PCF8566s on the same I
Section
The use of two types of LCD multiplex on the same I
2
C-bus protocol is shown in
S
2
C-bus protocol
13)
0 1 1 1 1 1
slave address
1 byte
Rev. 07 — 25 February 2009
2
C-bus master which is followed by one of the PCF8566 slave
S
A
0
R/W
0 A C
Figure
acknowledge by
0 1 1 1 1 1
all addressed
m
PCF8566s
2
slave address
COMMAND
C-bus for very large LCD applications (see
1 byte(s)
17. The sequence is initiated with a START
2
1 byte
Universal LCD driver for low multiplex rates
C-bus master issues a STOP condition (P).
001aai455
S
A
0
R/W
A
0
DISPLAY DATA
2
n > 0 byte(s)
C-bus
by A0, A1 and A2
update data pointers
subaddress counter
PCF8566 only
and if necessary,
acknowledge
selected
2
PCF8566
C-bus which
© NXP B.V. 2009. All rights reserved.
2
A
C-bus transfer.
P
mgg390
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