HD66765 Datasheet, PDF (22/71 Pages) Hitachi Semiconductor – 396-channel Segment Driver with Internal RAM for 4096-color Displays

Display Control (R07h)
HD66765
R/W RS
W1
DB15 DB14 DB13 DB12 DB11 DB10 DB9 DB8 DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
0 0 0 0 0 VLE2 VLE1 SPT 0 0 0 0 0 REV D1 D0
Figure 11 Display Control Instruction
VLE2–1: When VLE1 = 1, a vertical scroll is performed in the 1st screen. When VLE2 = 1, a vertical
scroll is performed in the 2nd screen. Vertical scrolling on the two screens can be independently
controlled.
tion ^{SPT: When SPT = 1, the 2-division LCD drive is performed. For details, see the Screen-division Driving}
Function section.
ifica ^{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.
ec _{D1–0: Display is on when D1 = 1 and off when D1 = 0. When off, the display data remains in the}
p _{GRAM, and can be displayed instantly by setting D1 = 1. When D1 is 0, the display is off with all of the}
S SEG/COM pin outputs set to the GND level. Because of this, the HD66765 can control the charging
current for the LCD with AC driving.
ry _{When D1–0 = 01, the internal display of the HD66765 is performed although the display is off. When}
a _{D1-0 = 00, the internal display operation halts and the display is off.}
in _{Table 9 D Bits and Operation}
lim _{HD66765 Internal Display}
e D1 D0 SEG/COM Output Operation
Pr ⁰
0
GND
Halt
Master/Slave Signal (CL1,
FLM, M, and DISPTMG)
Halt
0
1
GND
Operate
Operate
1
0
Unlit display
Operate
Operate
1
1
Display
Operate
Operate
Notes: 1. Writing from the microcomputer to the GRAM is independent from D1–0.
2. In the sleep and standby modes, D1–0 = 00. However, the register contents of D1–0 are not
modified.
Note: SPT and D1 bits are for setting the common driver. Control according to the bits’ values is
executed by the common driver. For details, see the data sheet for the common driver.
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