Datasheet

© 2005 Microchip Technology Inc. DS21935A-page 17
TCN75A
5.2 Graphical Representation of the TCN75A Serial Protocols
FIGURE 5-2: Read 1-byte and 2-byte data from a register.
S = START Condition
P = STOP Condition
SDA
A
C
K
1001
A
Pointer
0000
P
A
C
K
S
2
A
1
A
0
1
P
0
12345678 12345678
SCLK
0
0
Address Byte
A
C
K
1001
A
N
A
K
S P
2
A
1
A
0
D
7
D
6
D
5
D
4
D
3
D
2
D
1
D
0
12345678 12345678
Address Byte
Data
R
TCN75A
TCN75A
TCN75A
Master
W
SDA
A
C
K
1001
A
Pointer
0000
P
A
C
K
S
2
A
1
A
0
1
P
0
12345678 12345678
SCLK
0
0
Address Byte
A
C
K
1001
A
MSB Data
A
C
K
N
A
K
S P
2
A
1
A
0
D
7
D
6
D
5
D
4
D
3
D
2
D
1
D
0
12345678 12345678 12345678
Address Byte
LSB Data
R
D
15
D
14
D
13
D
12
D
11
D
10
D
9
D
8
TCN75A
TCN75A
TCN75A
Master
Master
W
SDA
SCLK
SDA
SCLK
Read 1-byte Data
Read 2-byte Data