hd66789 Renesas Electronics Corporation., hd66789 Datasheet - Page 83

• Manufacturer Part Number: hd66789
• Description: 528-channel, One-chip Driver For Amorphous Tft Panels With 262,144-color Display Ram, Power Supply Circuit, And Gate Circuit
• Manufacturer: Renesas Electronics Corporation.

HD66789
Rev.0.12, May 09 2003, page 83 of 156
A)Basic data transmission through SPI
(Output)
(Input)
(Input)
(Input)
B)Consecutive data transmission through SPI
(Input)
(Input)
(Input)
SCL
CS*
SDI
SDO
(Input)
(Input)
(Input)
SCL
CS*
(Output)
SDI
SCL
CS*
SDI
SDO
(Output)
C) RAM data read transmission
(Input)
(Input)
(Input)
Data transmission through Clock-Synchronized Serial Bus Interface
Data transmission start
SDO
CS*
SCL
SDI
D) Status read / instruction read
Start
Start
1
Start
“0” “1” “1” “1” “0”
1
2 3 4
Start byte
Start byte
R/W = 1
RS = 1,
Device ID code
Start byte
2
R/W = 1
RS = 1,
Note: Five bytes of invalid dummy data are read after the start byte.
Note: One byte of invalid dummy data are read after the start byte.
Start byte
3
5
Note: The first byte after the start byte is always the upper eight bits.
The valid data are read from the 6th byte.
4
6 7
The valid data are read from the second byte.
Dummy
Read 1
5
ID
8
6
RS RW
RS RW
9 10 1112 13 14 15 16
7
upper eight bits
Dummy
Read 2
Instruction1:
Dummy read 1
8
MSB
D15
D15 D14 D13 D12 D11 D10
9 10 11 12
D14 D13 D12 D11 D10
Dummy
Read 3
Index register setting, instruction, RAM data write
Status read, instruction read, RAM data read
13 14 15 16
17 18 19 20 21 22 23 24
Dummy
Read 4
lower eight bits
Instruction1:
upper eight bits
D9
D9
Status read:
D8
D8
Dummy
Read 5
D7
D7
17 18 19 20 21 22 23 24
D6
D6
D5
D5
RAM read
execution time
Upper 8
D4
D4
Instruction1:
bits
25 26 27 28 29 30 31 32
upper eight bits
D3
D3
Instruction2:
lower eight bits
Status read:
D2
D2
RAM read
Lower 8
D1
D1
bits
LSB
D0
D0
Data transmission end
End
End
End
Preliminary