hd66789 Renesas Electronics Corporation., hd66789 Datasheet - Page 53

• 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
VCM4
0
0
0
:
0
0
0
0
1
1
1
:
1
1
1
1
Note 1) Adjust VREG1OUT and VCM0-4 to set VcomH the same level as VDH or less.
Note 2) Adjust VREG1OUT and VDV0-4 to set the amplitude of Vcom 0.6V or less.
RAM Address Set (R21h)
AD15–0: Make the initial setting of GRAM address in the address counter (AC). After GRAM data are
written, the address counter is automatically updated according to the settings with AM, I/D bits and the
setting for a new GRAM address is not required in the address counter. Therefore, data are written
consecutively without resetting the address. The address counter is not automatically updated when data
are read out from GRAM.
GRAM address setting can not be made during the standby mode. An address set should be made within
the area specified with the window address.
When the RGB interface is selected (RM = 1), the setting of the address for AD15-0 is made every frame at
the falling edge of VSYNC. When the internal clock operation or VSYNC interface is selected (RM = 0),
the setting of the address is made when the instruction is executed.
Rev.0.12, May 09 2003, page 53 of 156
R/W
W
VCM3
0
0
0
:
1
1
1
1
0
0
0
:
1
1
1
1
RS
1
IB15 IB14 IB13 IB12 IB11 IB10
AD
VCM2
0
0
0
:
1
1
1
1
0
0
0
:
1
1
1
1
15
AD
14
VCM1
0
0
1
:
0
0
1
1
0
0
1
:
0
0
1
1
AD
13
VCM0
0
1
0
:
0
1
0
1
0
1
0
:
0
1
0
1
AD
12
VcomH
VREG1OUT x 0.40
VREG1OUT x 0.42
VREG1OUT x 0.44
:
VREG1OUT x 0.64
VREG1OUT x 0.66
VREG1OUT x 0.68
Halt internal volume.
Adjust with a variable
external resistor from
VcomR.
VREG1OUT x 0.70
VREG1OUT x 0.72
VREG1OUT x 0.74
:
VREG1OUT x 0.94
VREG1OUT x 0.96
VREG1OUT x 0.98
Halt internal volume.
Adjust with a variable
external resistor from
VcomR.
AD
11
AD
10
AD
IB9
9
AD
IB8 IB7 IB6
8
AD
7
VDV4
0
0
0
:
0
0
0
0
1
1
1
1
1
1
1
1
1
AD
6
0
VDV3
0
0
0
:
1
1
1
1
0
0
0
0
0
0
0
1
IB5
AD
5
AD
VDV2
0
0
0
:
1
1
1
1
0
0
0
0
1
1
1
1
*
IB4
4
AD
IB3 IB2
VDV1
0
0
1
:
0
0
1
1
0
0
1
1
0
0
1
1
*
3
AD
2
VDV0
1
1
*
0
1
0
:
0
1
0
0
1
0
0
1
0
Preliminary
IB1
AD
1
Vcom amplitude
VREG1OUT x 0.60
VREG1OUT x 0.63
VREG1OUT x 0.66
:
VREG1OUT x 0.96
VREG1OUT x 0.99
VREG1OUT x 1.02
Setting disabled
VREG1OUT x 1.05
VREG1OUT x 1.08
VREG1OUT x 1.11
VREG1OUT x 1.14
VREG1OUT x 1.17
VREG1OUT x 1.20
VREG1OUT x 1.23
Setting disabled
Setting disabled
IB0
AD
0