hd66789 Renesas Electronics Corporation., hd66789 Datasheet - Page 36

• 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.

CL Bit
HD66789
Display Control 1 (R07h)
PT1-0: Determine the kind of source output in a non-display area in the partial display mode. For details,
see the “Screen-split drive function” section.
PT1-0 bits
PT1
VLE2–1: When VLE1 = 1, the first screen is scrolled in the vertical direction. When VLE2 = 1, the second
screen is scrolled in the vertical direction. The first and second screens cannot be scrolled simultaneously.
This function is not available with the external display interface mode. In this case, make sure VLE2-1 = 0.
VLE Bits
VLE2
CL: When CL = 1, 8-color display mode is selected. For details, see the “8-Color Display Mode” section.
CL
SPT: When SPT = 1, liquid crystal is driven with 2 split screens. For details, see the “Screen Split Drive
Function” section. This function is not available in the external display interface mode. In this case, make
sure SPT = 0.
Rev.0.12, May 09 2003, page 36 of 156
0
0
1
1
0
0
1
1
0
1
R/W
W
PT0
0
1
0
1
RS
1
IB15 IB14 IB13 IB12 IB11 IB10 IB9
VLE1
0
1
0
1
Colors
262,144
8
0
Source Output for Non-display Area
Positive Polarity
V31
V31
GND
High impedance
0
0
PT1
Image on 2nd Screen
Stationary
Stationary
Scrolled
Setting disabled
PT0 VLE2
Negative Polarity
V0
V0
GND
High impedance
VLE1
IB8
SPT
IB7
0
Image on 1st Screen
Stationary
Scrolled
Stationary
Setting disabled
IB6
0
IB5
GON
IB4
DTE
IB3
CL
IB2
REV
Preliminary
IB1
D1
IB0
D0