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ETC - CMOS DOT MATRIX LCD CONTROLLER DRIVER

Numéro de référence SED1681F
Description CMOS DOT MATRIX LCD CONTROLLER DRIVER
Fabricant ETC 
Logo ETC 





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SED1681F fiche technique
SED1278
CMOS DOT MATRIX LCD CONTROLLER DRIVER
s DESCRIPTION
The SED1278 is a character LCD controller-driver, capable of driving displays as large as 2 lines of 8
characters (5 × 8 pixels), with minimum external components.
The SED1278 has an internal CGROM consisting of 240 characters (5 × 7) plus the underline cursor, JIS,
ASCII, and eight user-programmable characters in RAM.
The SED1278 has 40 segment output and 16 common output built-in. Thus, one chip is capable of displaying
up to 16 characters. The SED1278 can display one line of 48 characters using an SED1681F (80-bit output)
as an expansion segment driver.
The SED1278 is fabricated using a silicon gate CMOS technology process and features very low power
dissipation. This makes the device suitable for handheld and portable applications.
s FEATURES
Low-power CMOS technology
40 segment output
16 common output
Duty: 1/8 or 1/16 (set by command)
4/8-bit CPU data interface, TTL compatible
Two frame AC drive wave form
CGROM: .................................... 240 characters
CGRAM: ........................................ 8 characters
Display data RAM: ... 80 × 8 bits (80 characters)
Recommended expansion segment driver:
SED1181FLA (64 output)
SED1681F (80 output)
Built-in power on power-on reset
Built-in RC oscillator
Built-in LCD driver voltage-divider network
TTL compatible CPU interface
Supply voltage ................... Logic: 4.5V to 5.5V
LCD: 3.5V to 5.5V
Package:
QFP5-80 pins (F0A, F0B, F0C, F0D, F0G, F0H)
Al pad (D0A, D0B, D0C, D0D, D0G, D0H)
s SYSTEM BLOCK DIAGRAM
CPU
DATA
CONTROL
40 SEG
SED1278
16 COM
20 CHAR × 2 LINES
XSCL, LP
D0
SED1181
287

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