hd66789 Renesas Electronics Corporation., hd66789 Datasheet - Page 133

• 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
Interlaced Drive
The HD66789 supports interlaced drive, which divides one frame into n fields and then drives to prevent
flickers.
To determine the number of fields (n: value set in the FLD bits), check the display quality on the actual
liquid crystal panel. The following table shows the gate selection for each number of fields, 1 to 3. The
figure illustrates the output waveforms of the 3-field interlaced drive.
Gate selection
GS = 0
FLD1-0
Gate
G1
G2
G3
G4
G5
G6
G7
G8
G9
G237
G238
G239
G240
Rev.0.12, May 09 2003, page 133 of 156
x
x
x
Field
01
-
O
O
O
O
O
O
O
O
O
O
O
O
O
x
x
x
1
O
O
O
O
x
x
x
11
2
O
O
O
O
x
x
x
3
O
O
O
O
O
x
x
x
GS = 1
FLD1-0
Gate
G240
G239
G238
G237
G236
G235
G234
G233
G232
G4
G3
G2
G1
x
x
x
Field
01
-
O
O
O
O
O
O
O
O
O
O
O
O
O
x
x
x
1
O
O
O
O
x
x
x
Preliminary
11
2
O
O
O
O
x
x
x
3
O
O
O
O
O
x
x
x