pcf2119x-2 NXP Semiconductors, pcf2119x-2 Datasheet - Page 33

• Manufacturer Part Number: pcf2119x-2
• Description: Controllers/drivers
• Manufacturer: NXP Semiconductors

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(1) Last data byte is a dummy byte (may be omitted).
S
0 1 1 1 0 1
slave address
Fig.23 Master reads after setting word address; writes word address, set RS; ‘read data’.
acknowledgement
S
A
0
R/W
0 A
Co
1
S
RS
CONTROL BYTE A
ADDRESS
SLAVE
2n
acknowledgement
S
A
0
R/W
1 A
0 bytes
Co
DATA BYTE
DATA BYTE
n bytes
acknowledgement
A
data pointer
update
Co
0
A
RS
CONTROL BYTE A
1 byte
DATA BYTE
last byte
no acknowledgement
data pointer
DATA BYTE
update
1
n
P
0 bytes
(1)
MGG003
A