Philips Semiconductors
Product specification
LCD direct/duplex driver with
I2C-bus interface
PCF8577C
SDA
SDA
SCL
SCL
S
P
STOP condition
START condition
MBA608
Fig.9 Definition of the start and stop conditions.
SDA
SCL
MASTER
TRANSMITTER /
RECEIVER
SLAVE
TRANSMITTER /
RECEIVER
MASTER
TRANSMITTER /
RECEIVER
SLAVE
RECEIVER
MASTER
TRANSMITTER
MBA605
Fig.10 System configuration.
clock pulse for
acknowledgement
START
condition
handbook, full pagewidth
SCL FROM
MASTER
2
9
1
8
DATA OUTPUT
BY TRANSMITTER
S
DATA OUTPUT
BY RECEIVER
MBA606 - 1
Fig.11 Acknowledgement on the I2C-bus.
11
1998 Jul 30