hd66766r Renesas Electronics Corporation., hd66766r Datasheet - Page 29

• Manufacturer Part Number: hd66766r
• Description: 132 X 176-dot Graphics Lcd Controller/driver For 65k Colors - Hitachi Semiconductor
• Manufacturer: Renesas Electronics Corporation.

HD66766R
Display Control (R07h)
VLE2–1: When VLE1 = 1, a vertical scroll is performed in the 1
scroll is performed in the 2
controlled.
SPT: When SPT = 1, the 2-division LCD drive is performed. For details, see the Screen-division
Driving Function section.
B/W: When B/W = “1”, displayed data can be “all” or “all off” regardless GRAM contents. (B/W = “1”,
REV = “0”: all pixel on, B/W = “1”, REV = “1”: all pixel off) When B/W = “1”, grayscale palette has to
be default value.
REV: Displays all character and graphics display sections with reversal when REV = 1. For details, see
the Reversed Display Function section. Since the grayscale level can be reversed, display of the same
data is enabled on normally-white and normally-black panels.
D1–0: Display is on when D1 = “1” and off when D1 = 0. When off, the display data remains in the
GRAM, and can be displayed instantly by setting D1 = “1”. When D1 is “0”, the display is off with all
of the SEG/COM pin outputs set to the GND level. Because of this, the HD66766R can control the
charging current for the LCD with AC driving.
When D1–0 = “01”, the internal display of the HD66766R is performed although the display is off.
When D1-0 = “00”, the internal display operation halts and the display is off.
Table 20 D Bits and Operation
Notes: 1. Writing from the microcomputer to the GRAM is independent from the state of D1–0.
D1
0
0
1
1
R/W
W
2. In the sleep and standby modes, D1–0 = 00. However, the register contents of D1–0 are not modified.
D0
0
1
0
1
RS
1
SEG/COM Output
DB15
0
Unlit display
Display
DB14
GND
GND
0
nd
DB13
screen. Vertical scrolling on the two screens can be independently
0
DB12
0
Figure 14 Display Control
DB11
HD66766R Internal Display
0
VLE2
DB10
Operation
VLE1
Operate
Operate
Operate
DB9
29
Halt
SPT
DB8
DB7
0
Rev. 1.0-1 / September 2002
st
screen. When VLE2 = “1”, a vertical
DB6
0
DB5
0
DB4
0
B/W
DB3
REV
DB2
D1
DB1
D0
DB0