JLC1562BE Datasheet, PDF (5/9 Pages) ON Semiconductor – I2C Bus I/O Expander

JLC1562B
READ / WRITE MODES
MODE
READ
SDA
Master Device Slave Device
Receiver
Transmitter
I/O Expander
I/O Port
Input
WRITE Transmitter Receiver
Output
SDA SCL
Micro
Controller
(Master Device)
I/O Expander
(Slave Device)
SDA
SCL
P0 − P7
The JLC1562B Supports the following types of Bus Cycles
1.) WRITE MODE (A)
S Slave Address & R/W
SACK Write Data (1)
SACK P
2.) WRITE MODE (B)
S Slave Address & R/W
SACK Write Data (1)
SACK Write Data (2)
SACK P
3.) READ MODE (A)
S Slave Address & R/W
SACK Read Data
MACK P
4.) READ MODE (B)
S Slave Address & R/W
SACK Read Data (1)
MACK Read Data (2)
MACK Read Data (3)
MACK
P
S = START Condition
SACK = Slave Acknowledgement
MACK = Master Acknowledgement
P = STOP Condition
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