LCD Driver Technical Manual
SED1520 Series
EPSON 2–1
SED1520
Series
OVERVIEW
The SED1520 family of dot matrix LCD drivers are
designed for the display of characters and graphics. The
drivers generate LCD drive signals derived from bit
mapped data stored in an internal RAM.
The drivers are available in two configurations
The SED1520 family drivers incorporate innovative
circuit design strategies to achieve very low power
dissipation at a wide range of operating voltages.
These features give the designer a flexible means of
implementing small to medium size LCD displays for
compact, low power systems.
• The SED1520 which is able to drive two lines of
twelve characters each.
• The SED1521 which is able to drive 80 segments for
extention.
• The SED1522 which is able to drive one line of
thirteen characters each.
Line-up
FEATURES
• Fast 8-bit MPU interface compatible with 80- and 68-
family microcomputers
• Many command set
• Total 80 (segment + common) drive sets
• Low power — 30 µW at 2 kHz external clock
• Wide range of supply voltages
V
DD – VSS: –2.4 to –7.0 V
V
DD – V5: –3.5 to –13.0 V
• Low-power CMOS
• Package code (For example SED1520)
SED1520T
SED1520F
**
: PKG SED1520F
*
A (QFP5-100pin)
SED1520F
*
C (QFP15-100pin)
SED1520D
**
: Chip SED1520D
*
A (Al-pad)
SED1520D
*
B (Au-bump)
Product
Clock Frequency
Number Number
Name
Applicable Driver of SEG of CMOS Duty
On-Chip External
Drivers Drivers
SED1520
*
0
*
18 kHz 18 kHz SED1520
*
0
*
, SED1521
*
0
*
61 16 1/16, 1/32
SED1521
*
0
*
— 18 kHz SED1520
*
0
*
, SED1522
*
0
*
80 0 1/8 to 1/32
SED1522
*
0
*
18 kHz 18 kHz SED1522
*
0
*
, SED1521
*
0
*
69 8 1/8, 1/16
SED1520
*
A
*
— 2 kHz SED1520
*
A
*
, SED1521
*
A
*
61 16 1/16, 1/32
SED1521
*
A
*
— 2 kHz SED1520
*
A
*
, SED1522
*
A
*
80 0 1/8 to 1/32
SED1522
*
A
*
— 2 kHz SED1522
*
A
*
, SED1521
*
A
*
69 8 1/8, 1/16