English
Language : 

HD66724 Datasheet, PDF (91/117 Pages) Hitachi Semiconductor – (Graphics LCD Controller/Driver with Key Scan Function)
◁
HD66724/HD66725
1.0
(on)
0.9
0.8
Grayscale control range
0.7
0.6
0.5
(Blinking)
0.4
0.3
0.2
0.1
(off)
0000 0001 0010 0011 0100 0101 0110 0111 1000 1001 1010 1011 1100 1101 1110 1111
SEGRAM set data
Figure 51 Relationship between SEGRAM Set Data and Effective Applied Voltage
Table 45 Relationship between SEGRAM Data and Blinking Control Segment Display
(Blinking Control Segment Driver)
SEGRAM Data
Setting
LCD Display Control for
DB3 DB2 DB1 DB0 COMS1 Segment
SEGRAM Data
Setting
LCD Display Control for
DB7 DB6 DB5 DB4 COMS2 Segment
0 *1 *1 0 0 (Always unlit)
0 *1 *1 0 0 (Always unlit)
0 *1 *1 1 1 (Always lit)
0 *1 *1 1 1 (Always lit)
1 *1 *1 0 Blinking display *2
1 *1 *1 0 Blinking display *2
1 *1 *1 1 Double-speed blinking
display *3
1 *1 *1 1 Double-speed blinking
display *3
Notes: 1. 0 or 1.
2. Blinking is achieved by repeatedly turning on the segment for 32 frames and turning it off for the
next 32 frames.
3. Double-speed blinking is achieved by repeatedly turning on the segment for16 frames and
turning it off for the next 16 frames.
91
 ▷