Specifications

EPSON 2–1
SED1200 Series
SED1200
Series
FEATURES
• Internal display RAM to hold 20 8-bit character codes.
• Internal character generator
– CGROM: 160 JIS ASCII characters.
– CGRAM: 4 user programmable 5×8 pixel
characters
– Font: 5×7 pixel characters plus the underline
cursor.
– JIS character set using SED1200F
0A/SED1200D0A
– ASCII character set using SED1200F0B/
SED1200D
0B
• Internal LCD driver circuitry
– 50 segment driver lines
– 16 common driver lines
– Total size: Two lines of 10 characters each
(maximum). One line of 20 characters
(LCD panel dependent)
• CPU interface
– 4-bit CPU data bus
– 13 display control commands
• Low external component count
– Built in RC oscillator (using one external feedback
resistor)
– Built in LCD driver voltage-divider network.
• Implemented using low power CMOS technology
– TTL compatible CPU interface
• Power supply
– Logic: 2.5 V to 5.5 V
– LCD: 3.5 V to 5.5 V
• 80 pin QFP package SED1200F and chip (SED1200D)
OVERVIEW
The SED1200 is a Liquid Crystal Display (LCD) character
display controller-driver, capable of directly driving
displays as large as 2 lines of 10 5×8 pixel characters,
with a minimum of external components.
The SED1200 has an internal character generator (CG)
consisting of 160 JIS ASCII characters in ROM and four
user definable characters in RAM. The internal CG, a
versatile set of cursor and display control commands,
mean that the system CPU is only responsible for the
display data and commands, and not for the LCD display
itself.