hd66717 Renesas Electronics Corporation., hd66717 Datasheet - Page 44

• Manufacturer Part Number: hd66717
• Description: Low-power Dot-matrix Liquid Crystal Display Controller/driver -
• Manufacturer: Renesas Electronics Corporation.

HD66717
Table 18
First Byte
I
HD66717
496
2
C bus system Transfer
(input)
(input)
(input)
(input)
SDA
SCL
SDA
SCL
Transfer start
First Bytes of I
Start
S
start
start
Transfer
S
ID5 ID4 ID3 ID2 ID1 ID0 RS
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
1
Device ID code
Note: Transfer the instruction 2 ACK after instruction 1 has been executed.
2
1st byte
Slave address
1st byte
3
Bit 1
A6
ID5
O
4
Figure 22 I
2
C Bus Interface Data
5
6
A
C
K
RS
Bit 2
A5
ID4
I
7
"0"
8
Acknowledge
Ack
Instruction 1
a) Basic data transfer (receive) timing
2
9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
b) Consecutive data transfer timing
C Bus Interface Timing Sequence
MSB
D7 D6 D5 D4
Bit 3
A4
ID3
I
1st instruction
Transferred Bit String
Instruction 1 execution
time
A
C
K
Bit 4
I
A3
Device ID code
ID2
I
2
D3 D2 D1 D0
C slave address
20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36
Instruction 2
Acknowledge
Bit 5
A2
ID1
Ack
Instructions
MSB
D7 D6 D5 D4 D3 D2 D1 D0
Instruction 2 execution
time
A
C
K
Bit 6
A1
ID0
2nd instruction
Instrucation 3
Bit 7
A0
RS
Acknowledge
25 26
Bit 8
A
C
K
R/W
0
Transfer end
End
Ack
27
P
Bit 9
ACK
ACK