SED1278D EPSON [Epson Company], SED1278D Datasheet

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SED1278D

Manufacturer Part Number
SED1278D
Description
Dot Matrix LCD Controller Driver
Manufacturer
EPSON [Epson Company]
Datasheet
1.SED1278D.pdf (13 pages)
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 558 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.
BLOCK DIAGRAM
FEATURES
DESCRIPTION
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 characters52 lines, 80 characters51 line
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)
6 Kinds of character font
Single power supply ................... 5V 10% (Logic)
Low LCD driving voltage ............ V
Package ..................................... SED1278F: QFP5-80pin (plastic)
DB0
DB7
E
R/W
RS
V
V
V1
V2
V3
V4
V5
DD
SS
Instruction Decoder
Instruction Register
1/8, 1/11 or 1/16 Duty Dot Matrix Drive
Built-in Character Generator ROM and RAM (
Maximum Simultaneous Display of 80 Characters
Dot Matrix LCD Controller Driver
(With extension LCD driver)
Data Register
5 10 dots+Cursor line
SED1278D: Die form (Al pad)
(When accompanied with SED1181F
DD
8
—V
8
8
5
.0V
(CG•RAM)
Character
Generator
M P X
64 Bytes
RAM
7
Address
Counter ACC
Parallel/Serial
Data Converter
M P X
5
Cursor/
Brink Control
5
Display Data RAM
5 10
(CG•RAM)
5
Generator
M P X
Character
DD RAM
80 Bytes
RAM
Refresh Address Counter
240 Byts
SED1278F/D
8
7
Shift Register 16 Bits
Timing Generator
Shift Register
Common Driving
Output Circuit
Segment Driving
Output Circuit
Latch Circuit
LA
40 Bits
40 Bits
OSC1 OSC2
/D
Oscillation
Circuit
LA
, SED1681F
XSCL
LP
FR
COM1
COM16
SEG1
SEG40
D0
ROM 240 characters
RAM
OA
/D
OA
8 characters
)
PF282-07
1
)

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SED1278D Summary of contents

Page 1

... R SED1278F/D (When accompanied with SED1181F 5 10 dots+Cursor line —V . SED1278D: Die form (Al pad) Cursor/ Brink Control Address Refresh Address Counter Counter ACC Display Data RAM DD RAM 80 Bytes Character Character Generator ...

Page 2

PIN CONFIGURATION QFP5-80pin SEG38 SEG37 SEG36 SEG35 SEG34 SEG33 SEG32 SEG31 SEG30 SEG29 SEG28 SEG27 SEG26 SEG25 SEG24 SEG23 PIN DESCRIPTION Symbol No. of signals DB0 to DB7 XSCL 1 FR ...

Page 3

ELECTRICAL CHARACTERISTICS DC Characteristics Characteristic Symbol "H" level input voltage (1) V IH1 "L" level input voltage (1) V IL1 "H" level input voltage (2) V IH2 "L" level input voltage (2) V IL2 "H" level output voltage (1) V ...

Page 4

Timing Chart Read Cycle DB0 to DB7 Write Cycle DB0 to DB7 DISPLAY COMMAND Parameter RS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0 CLEAR DISPLAY 0 0 CURSOR HOME 0 ...

Page 5

PACKAGE DIMENSIONS Plastic QFP5-80pin LCD PANEL INTERFACE EXAMPLE (2 lines 20 characters) SED1278F/D COM1 COM16 SEG1 SEG40 LP XSCL OSC1 OSC2 R f SED1278F/D is usually connected to 8-bit MPU via I/O ...

Page 6

... SED1278D PAD LAYOUT PAD COORDINATION Pad No. Pad Name SEG22 2,087 1,671 2 SEG21 1,905 3 SEG20 1,723 4 SEG19 1,541 5 SEG18 1,359 6 SEG17 1,177 7 SEG16 995 8 SEG15 814 9 SEG14 633 10 SEG13 452 11 SEG12 272 12 SEG11 91 13 SEG10 –91 14 SEG9 –272 15 SEG8 –452 16 SEG7 – ...

Page 7

... SED1278D CHARACTER FONT RAM ( RAM (2) CG RAM RAM (4) CG RAM 4 (5) CG RAM 5 ( RAM (7) CG RAM 7 ( RAM ( RAM ( RAM ( RAM ( RAM (5) CG RAM D ( RAM ( RAM ...

Page 8

SED1278F /D CHARACTER FONT RAM ( RAM (2) CG RAM RAM (4) CG RAM 4 (5) CG RAM 5 ( RAM (7) CG RAM 7 (8) ...

Page 9

SED1278F /D CHARACTER FONT RAM ( RAM (2) CG RAM RAM (4) CG RAM 4 (5) CG RAM 5 ( RAM (7) CG RAM 7 ...

Page 10

SED1278F /D CHARACTER FONT RAM ( RAM (2) CG RAM RAM (4) CG RAM 4 (5) CG RAM 5 ( RAM (7) CG RAM 7 (8) ...

Page 11

SED1278F /D CHARACTER FONT RAM ( RAM (2) CG RAM RAM (4) CG RAM 4 (5) CG RAM 5 ( RAM (7) CG RAM 7 ...

Page 12

SED1278F /D CHARACTER FONT RAM ( RAM (2) CG RAM RAM 3 (4) CG RAM 4 (5) CG RAM 5 ( RAM (7) CG RAM 7 (8) ...

Page 13

NOTICE No part of this material may be reproduced or duplicated in any form or by any means without the written permission of Seiko Epson. Seiko Epson reserves the right to make changes to this material without notice. Seiko Epson ...

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