Specifications

8–12 EPSON
SED1240 Series
Liquid Crystal Drive Circuit Signals
Dynamic Drive Pins [SED1240]
Pin name I/O Description Q’ty
COM1 to
O Common signal output pins (for characters) 32
COM32
COMS1,
O
Common signal output pins (for others than characters)
4
COMS2 COMS1, COMS2: Symbol output command output
SEG1 to
O Segment signal output pins (for characters) 80
SEG80
Dynamic Drive Pins [SED1241]
Pin name I/O Description Q’ty
COM1 to
O Common signal output pins (for characters) 16
COM24
COMS1,
O
Common signal output pins (for others than characters)
4
COMS2 CMOS1, CMOS2: Symbol display common output
SEG1 to
O Segment signal output pins (for characters) 80
SEG80
Static Drive Pins
Pin name I/O Description Q’ty
COMSA O Common signal output pin (for static icons) 2
SEGS
O Segment signal output pins (for static icons) 10
A to J
Pin name I/O Description Q’ty
COM1 to
O
Common signal output pins (for characters)
16
COM16 (Keep COM17 to COM32 unconnected.)
COMS1,
O
Common signal output pins (for others than characters)
4
COMS2 CMOS1, CMOS2: Symbol display common output
SEG1 to
O Segment signal output pins (for characters) 80
SEG80
Dynamic Drive Pins [SED1242]
Note: For the electrode of the liquid crystal display panel connected to the static drive terminal, it is recommended
use the pattern separated from the electrode connected to the dynamic drive terminal. If this pattern is too
close, the liquid crystal and electrode may be deteriorated.