hd66789 Renesas Electronics Corporation., hd66789 Datasheet - Page 112

• 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
Configuration of Grayscale Amplifier
The eight levels (VIN0-7) of grayscale are determined by the gradient adjustment and fine adjustment
registers. The 8 levels are then divided into 32 levels (V0-31) by the ladder resistors placed between each
level.
Rev.0.12, May 09 2003, page 112 of 156
VREG1OUT
VGS
PRP/N0
Gradient
Adjustment
Register
3
PRP/N1
3
PKP/N0
Fine Adjustment Registers (6 x 3bits)
3
PKP/N1
3
Grayscale amplifier
PKP/N2
3
PKP/N3
3
PKP/N4 PKP/N5
3
3
VRP/N0
Amplitude
Adjustment
Register
4
VRP/N1
5
VINP0/VINN0
VINP1/VINN1
VINP2/VINN2
VINP3/VINN3
VINP4/VINN4
VINP5/VINN5
VINP6/VINN6
VINP7/VINN7
Preliminary
V0
V1
V2
V3
V8
V9
V16
V17
V19
V20
V24
V25
V26
V30
V31