SED1751
MLS Driver Chip Set
EPSON
5–3
Technical Manual
TERMINAL FUNCTIONS
Input
TEST1
Terminal Name
I/O
Function
Number of
Terminals
COM1 to
O
Common (row) output to drive LC.
120
COM120
Output transition occurs on falling edge of LP.
Carry signal I/O.
CIO1
I/O
This is set to input or output depending on the level of
2
CIO2
the SHL input. Output transition occurs on falling edge
of LP.
YD
I
Frame start/pulse input, with terminator. (*1)
1
F1, F2
I
Drive pattern select signal input, with terminator. (*1)
2
LP
I
Shift clock input for display data.
1
(Triggers on falling edge.) With terminator. (*1)
Shift direction select and CIO terminal I/O control input.
SHL
I
1
The numbers in parentheses are for 100 output mode.
Select input for the number of COM output terminals:
SEL
I
120 outputs
←→
100 outputs
1
L: COM1 to COM120
H: COM9 to COM108
LSEL
I
1/2 H operation select signal input.
1
L: Normal operation. H: 1/2 operation.
Chip select signal input for when a cascade connection
CSEL
I
is used.
1
L: Leading chip
H: Other chips
FR
I
LC drive output AC signal input. With terminator (*1)
1
LC display blanking control input. With a low level input,
DOFF
I
all common outputs are temporarily set to the V
C
level.
1
The contents of the latches are maintained. With
terminator (*1)
TEST1
I
Test1 signal input. Normally tied at L.
1
V
CC
, GNDL,
Power
Power source for logic:
3
GNDR
GND: 0 V , V
CC
: +2.7 to 5.5 V
V
CL
, V
CR
,
LC Drive Power:
+V
1L
, +V
1R
,
Power GND: 0 V,
8
-V
1L
, -V
1R
,
V
DDH
: + 14.0 to 42.0 V, V
DDH
≥
+V
1
≥
V
C
≥
–V
1
≥
GND
V
DDHL
, V
DDHR
DM
Dummy pad
11
Total
155
Note:
*1
SHL
Output Shift Direction
CIO
CIO1
CIO2
L
1(9)
→
120(108)
Input
Output
H
120(108)
→
1(9)
Output
Input
Содержание SED1751
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