Epson SED1278F/D- Manual
Epson SED1278F/D– Manual, read for free online in PDF format. We hope this helps you resolve any issues you may have. If you have further questions, please contact us through the contact form.
Table of Contents:
- Page 4 – Read Cycle; Don‘t care
- Page 5 – PACKAGE DIMENSIONS; LCD; LP
- Page 6 – Monitor Pad; GND; DO
- Page 7 – OA; CHARACTER FONT
- Page 8 – OB
- Page 9 – OC
- Page 11 – OG
- Page 12 – OH
- Page 13 – NOTICE; ©Seiko Epson Corporation 1999 All rights reserved.
1
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
LA
/D
LA
, SED1681F
OA
/D
OA
)
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
DD
-V
5
>
= 3.0V
Package ..................................... SED1278F: QFP5-80pin (plastic)
SED1278D: Die form (Al pad)
BLOCK DIAGRAM
ROM 240 characters
RAM 8 characters
Instruction Decoder
M P X
M P X
M P X
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
8
8
8
5
5
8
5
7
7
Cursor/
Brink Control
Data Register
I/O Buffer
I/O Control
~
E
R/W
RS
V
DD
V
SS
V1
V2
V3
V4
V5
OSC1 OSC2
XSCL
LP
FR
COM1
COM16
~~
SEG1
SEG40
D0
SED1278F/D
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Summary
SED1278F/D 4 Timing Chart DISPLAY COMMAND Read Cycle RS V IH1 V IH1 V IH1 V IH1 V IH1 V IL1 V OH1 V OL1 V OH1 Significant Data V OL1 V IL1 V IL1 V IL1 V IH1 V IL1 R/W E DB0 to DB7 t AS t cycE t RD t WEH t AH t AH t fE t fE t DHR RS V IH1 V IL1 V IH1 V IH1 V IL1 V IL1 V IH1 V IL1 V IH1 Significant Da...
5 SED1278F/D 20 ± 0.1 25.6 ± 0.4 41 64 14 ± 0.1 19.6 ± 0.4 25 40 INDEX 0.35 ± 0.1 24 1 80 65 2.7 ± 0.1 0.26 3.4 max 2.8 1.5 0 ° 12 ° 0.15 ± 0.05 0.8 Plastic QFP5-80pin Unit: mm PACKAGE DIMENSIONS LCD PANEL INTERFACE EXAMPLE (2 lines 20 characters) SED1278F/D COM1 COM16 … SEG1 SEG40 … SEG0 SEG59 … LC...
SED1278F/D 6 SED1278D PAD LAYOUT PAD COORDINATION 24 41 1 64 25 40 80 X Y 65 (0, 0) 4,500 Monitor Pad Pad size: 109 109 3,670 Unit: m 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 SEG22 SEG21 SEG20 SEG19 SEG18 SEG17 SEG16 SEG15 SEG14 SEG13 SEG12 SEG11 SEG10 SEG9 SEG8 SEG7 S...
