PCF2116AU Datasheet, PDF (32/64 Pages) NXP Semiconductors – LCD controller/drivers

acknowledgement
from PCF2116
S
S ^{0 1 1 1 0 1 A 0 A 1 CONTROL BYTE A}
0
DATA
A 0 1 1 CONTROL A
(1)
DATA
A
slave address
R/W Co
2n 0 bytes
2 bytes
Co
acknowledgement
from PCF2116
no acknowledgement
from master
S
SLAVE
ADDRESS
S
A1A
0
DATA
A
DATA
1P
n bytes
R/W
last byte
update
data pointer
MGA809 - 1
(1) Last data byte is a dummy byte (may be omitted).
Fig.26 Master reads after setting word address; write word address, set RS/RW; READ data.