HD66760 Datasheet, PDF (28/105 Pages) Hitachi Semiconductor – 104 X 80-dot Graphics LCD Controller/Driver for 256 Colors

HD66760
When GS = 1, the GRAM address increments or decrements addresses from 0000H to 4F0CH. For details,
see the Grayscale Palette and Four-color Display Mode sections.
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 the SEG1 to SEG312
outputs and COM1 to COM80 outputs set to the GND level. Because of this, the HD66760 can control the
charging current for the LCD with AC driving.
When D1-0 = 01, the internal display of the HD66760 is performed although the display is off. When D1-0 =
00, the internal display operation halts and the display is off.
Table 19 D Bits and Operation
D1
D0
SEG/COM Output
HD66760 Internal Display
Operation
0
0
GND
Halt
0
1
GND
Operate
1
0
Unlit display
Operate
1
1
Display
Operate
Notes: 1. The internal power supply can operate independently from D1-0.
2. Writing from the microcomputer to the GRAM is independent from D1-0.
3. In the sleep and standby modes, D1-0 = 00. However, the register contents of D1-0 are not
modified.
R/W RS DB15 DB14 DB13 DB12 DB11 DB10 DB9 DB8 DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
W 1 0 0 0 0 0 VLE2 VLE1 SPT 0 0 E B/W GS REV D1 D0
Figure 11 Display Control Instruction
Cursor Control (R08h)
C: When C = 1, the window cursor display is started. The display mode is selected by the CM1-0 bits, and
the display area is specified in a pixel unit by the horizontal cursor position register (HS6-0 and HE6-0 bits)
and vertical cursor position register (VS6-0 and VE6-0 bits). The cursor color (CR, CG, or CB) can be set to
any of eight colors in the window cursor. However, the cursor color cannot be controlled by the grayscale.
For details, see the Color Window Cursor Control section.
CM1-0: The display mode of the window cursor is selected. These bits can display a eight-color cursor,
reversed cursor, eight-color blink cursor, and reversed blink cursor.