HD66727 Datasheet, PDF (32/97 Pages) Hitachi Semiconductor – Low-Power Dot-Matrix Liquid Crystal Display Controller/Driver with Key Scan Function

HD66727
RS R/W DB7
DB0
0 0 0 0 0 0 1 B/W C B
Figure 10 Cursor Control Instruction
Alternating display
(every 32 frames)
i) White-black inverting display example
ii) 8th raster-row
cursor display
Alternating
display
ii) Blink display example
Figure 11 Cursor Control Examples
Display On/Off Control
The display on/off control instruction (Figure 12) includes the D, FW, and LC bits.
D: The character display and the segment display for multiplexing icon are on when D is 1. When off, the
display data remains in DDRAM or SEGRAM, and can be displayed instantly by setting D to 1. When D is
0, multiplexing LCD drive halts and the display is off with the SEG1 to SEG60 outputs, COM1 to COM32
outputs, and COMS1/2 output set to V_CC level and off. Because of this, the HD66727 can control charging
current for the LCD with driving.
FW: When FW = 0, the font width is 5 dots. When FW = 1, the font width is 6 dots.
LC: When LC = 1, a cursor attribute is assigned to the line that contains the address counter (AC) value.
Cursor mode can be selected with the B/W, C, and B bits. Refer to the Line-Cursor Display section.
RS R/W DB7
DB0
0 0 0 0 0 1 0 D FW LC
Figure 12 Display On/Off Control Instruction
32