PCF8576CH NXP Semiconductors, PCF8576CH Datasheet - Page 23

• Manufacturer Part Number: PCF8576CH
• Manufacturer: NXP Semiconductors

Specifications of PCF8576CH

• Operating Supply Voltage (typ): 2.5/3.3/5V
• Number Of Digits: 20
• Number Of Segments: 160
• Package Type: LQFP
• Pin Count: 64
• Mounting: Surface Mount
• Power Dissipation: 400mW
• Frequency (max): 315KHz
• Operating Supply Voltage (min): 2V
• Operating Supply Voltage (max): 6V
• Lead Free Status / Rohs Status: Compliant

NXP Semiconductors
8. Basic architecture
PCF8576C_9
Product data sheet
8.1.1.1 START and STOP conditions
8.1.1 Bit transfer
8.1.2 System configuration
8.1 Characteristics of the I
The I
modules. The two lines are a Serial Data line (SDA) and a Serial Clock Line (SCL). When
connected to the output stages of a device, both lines must be connected to a positive
supply via a pull-up resistor. Data transfer is initiated only when the bus is not busy.
One data bit is transferred during each clock pulse. The data on the SDA line must remain
stable during the HIGH period of the clock pulse. Changes in the data line at this time will
be interpreted as a control signal. Bit transfer is illustrated in
Both data and clock lines remain HIGH when the bus is not busy. A HIGH-to-LOW change
of the data line, while the clock is HIGH, is defined as the START condition (S).
A LOW-to-HIGH change of the data line, while the clock is HIGH, is defined as the STOP
condition (P). The START and STOP conditions are illustrated in
A device generating a message is a transmitter and a device receiving a message is the
receiver. The device that controls the message is the master and the devices which are
controlled by the master are the slaves. The system configuration is illustrated in
Figure
Fig 14. Bit transfer
Fig 15. Definition of START and STOP conditions
2
C-bus provides bidirectional, two-line communication between different IC or
SDA
SCL
16.
START condition
SDA
SCL
S
Rev. 09 — 9 July 2009
2
C-bus
data valid
data line
stable;
Universal LCD driver for low multiplex rates
change
allowed
of data
Figure
STOP condition
Figure
mba607
PCF8576C
P
14.
© NXP B.V. 2009. All rights reserved.
15.
mbc622
SDA
SCL
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