Epson SED1278F/D User Manual download pdf

SED1278F/D

Dot Matrix LCD Controller Driver

SEIKO EPSON CORPORATION

PF282-07

1/8, 1/11 or 1/16 Duty Dot Matrix Drive

Built-in Character Generator ROM and RAM ( )

Maximum Simultaneous Display of 80 Characters

(With extension LCD driver)

DESCRIPTION

The SED1278F/D is a dot matrix LCD controller/driver which is dedicated to character display. It is capable of

displaying up to 80 characters under 4-bit/8-bit MPU control.

The built-in character generator ROM has an extended capacity of 240 different characters, each being generated

in a 5 10 dots font compatible with a 1/11 duty. In addition, the SED1278F/D contains 64 bytes of character

generator RAM in which the user can store 8 different characters, each consisting of 5 8 dots. These memory

features offer high flexibility in character display.

The guaranteed minimum LCD driving voltage is 3V, and this makes the SED1278F/D suitable for driving low

voltage LCDs.

FEATURES

Display RAM............................... 80 bytes (80 characters)

Character generator ROM.......... 240 characters (Able to 256 characters)

Character generator RAM .......... 8 characters

Built-in CR oscillator, Built-in power-on reset circuit

Maximim display dimension ....... 40 characters 2 lines, 80 characters 1 line

(When accompanied with SED1181F

, SED1681F

)

1/8, 1/11 or 1/16 duty matirx drive (fixed by command)

2 flame AC wave-form drive

High-speed bus interface with 4-bit/8-bit MPU

Powerful display control instructions

Character.................................... 5 7 dots+Cursor line (5 8 dots also possible)

5 10 dots+Cursor line

6 Kinds of character font

Single power supply ................... 5V±10% (Logic)

Low LCD driving voltage ............ V

-V

3.0V

Package ..................................... SED1278F: QFP5-80pin (plastic)

SED1278D: Die form (Al pad)

BLOCK DIAGRAM

ROM 240 characters

RAM 8 characters

Instruction Decoder

MPX

Display Data RAM

DD RAM

80 Bytes

Character

Generator

RAM

(CG RAM)

64 Bytes

Character

Generator

RAM

(CG RAM)

5 10 240 Byts

Instruction Register

Refresh Address Counter

Address

Counter ACC

Parallel/Serial

Data Converter

Shift Register

40 Bits

Latch Circuit

40 Bits

Segment Driving

Output Circuit

Common Driving

Output Circuit

Shift Register 16 Bits

Timing Generator

Oscillation

Circuit

DB0

DB7

Cursor/

Brink Control

Data Register

I/O BufferI/O Control

OSC1 OSC2

XSCL

COM1

COM16

SEG1

SEG40

SED1278F/D

1 2 3 4 5 6 ... 12 13

Summary of Contents

Page 1 - SED1278F/D

1SED1278F/DDot Matrix LCD Controller DriverSEIKO EPSON CORPORATIONPF282-07 1/8, 1/11 or 1/16 Duty Dot Matrix Drive Built-in Character Generator ROM an

Page 2 - ABSOLUTE MAXIMUM RATINGS

SED1278F/D10 SED1278FOD/DOE CHARACTER FONT

Page 3

11SED1278F/D SED1278FOG/DOG CHARACTER FONT

Page 4 - DISPLAY COMMAND

SED1278F/D12 SED1278FOH/DOH CHARACTER FONT

Page 5 - PACKAGE DIMENSIONS

13SED1278F/DELECTRONIC DEVICES MARKETING DIVISIONIC Marketing & Engineering GroupED International Marketing Department I (Europe & U.S.A.)421-

Page 6

SED1278F/D2 PIN CONFIGURATION PIN DESCRIPTIONABSOLUTE MAXIMUM RATINGSINDEX15101520253035404550556065807570SED1278FSEG38SEG37SEG36SEG35SEG34SEG33SEG32S

Page 7

3SED1278F/D ELECTRICAL CHARACTERISTICS DC Characteristics Write CycleVIH1VIL1VIH2VIL2VOH1VOL1VOH2VOL2RCOMRSEGIIL-IPIOPfEXTCLDutytrEXTCLtfEXTCLfOSCfOSC

Page 8

SED1278F/D4 Timing Chart DISPLAY COMMAND Read CycleRSVIH1VIH1VIH1VIH1VIH1VIL1VOH1VOL1VOH1SignificantDataVOL1VIL1VIL1VIL1VIH1VIL1R/WEDB0 to DB7tAStc

Page 9

5SED1278F/D20±0.125.6±0.4416414±0.119.6±0.42540INDEX0.35±0.124180652.7±0.10.263.4max2.81.50°12°0.15±0.050.8Plastic QFP5-80pinUnit: mm PACKAGE DIMENSIO

Page 10

SED1278F/D6 SED1278D PAD LAYOUT PAD COORDINATION2441164254080XY65(0, 0)4,500Monitor PadPad size: 109 1093,670Unit: m123456789101112131415161718

Page 11

7SED1278F/D SED1278DOA CHARACTER FONT

Page 12

SED1278F/D8 SED1278FOB/DOB CHARACTER FONT

Page 13

9SED1278F/D SED1278FOC/DOC CHARACTER FONT