S1D1 Epson Electronics America, Inc., S1D1 Datasheet - Page 384

• Manufacturer Part Number: S1D1
• Description: LCD Controller-driver With Built-in Character ROM
• Manufacturer: Epson Electronics America, Inc.

n-line reversal alternating current drive waveforms (Example of n=5: when the line reversal
register is set to 4)
Common Output State Selection Circuit
The S1D15705 series can set the scanning direction of the COM output using the common output state selection
command (see Fig. 6). Therefore the IC assignment restrictions at LCD module assembly are reduced.
Liquid Crystal Drive Circuit
These are a 233-channel (S1D15705
that generate four voltage levels for liquid crystal drive. It outputs the liquid crystal drive voltage that corresponds to
the combinations of the display data, COM scanning signal, and FR signal.
Fig. 7 shows examples of the SEG and COM output waveforms.
Rev. 3.1a
State
Normal rotation
Reversal
COM0
COM1
SYNC
DATA
SEGn
RAM
FR
CL
64
65 1
COM 63
COM 0
S1D15705
2
3
*****
4
5
*****
COM 63
6
COM 0
and S1D15707
EPSON
Table 6
Fig. 6
COM scanning direction
COM 31
COM 0
60 61 62 63 64 65 1
*****
S1D15707
), a 217-channel (S1D15708
*****
COM 31
COM 0
2
3
COM 15
COM 0
4
S1D15708
5
S1D15705 Series
*****
6
V
V
V
V
V
V
V
V
V
V
V
V
) multiplexers
*****
DD
1
4
5
DD
1
4
5
DD
2
3
5
COM 15
COM 0
10–25