Epson SED1278F-D User Manual

PF282-07
SED1278F/D
SED1278F/D
Dot Matrix LCD Controller Driver
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 SED1181FLA/DLA, SED1681FOA/DOA) 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 ............ VDD-V
Package ..................................... SED1278F: QFP5-80pin (plastic)
SED1278D: Die form (Al pad)
5
>
=
3.0V
ROM 240 characters RAM 8 characters
BLOCK DIAGRAM
DB0 DB7
E R RS
V V V1 V2 V3 V4 V5
OSC1 OSC2
Address Counter ACC
7
Cursor/ Brink Control
Display Data RAM
5 10 240 Byts
55
MPX
5
Parallel/Serial Data Converter
Refresh Address Counter
7
MPX
DD RAM 80 Bytes
8
Character Generator
RAM
(CG RAM)
Oscillation Circuit
Timing Generator
Shift Register 16 Bits
Common Driving Output Circuit
Segment Driving Output Circuit
Latch Circuit
40 Bits
Shift Register
40 Bits
XSCL LP FR
COM1
~~ COM16 SEG1
SEG40
D0
1
Instruction Decoder
Instruction Register
~
I/O BufferI/O Control
/
W
DD SS
8
Data Register
8
MPX
Character Generator
8
RAM
(CG RAM)
64 Bytes
SEIKO EPSON CORPORATION
SED1278F/D
PIN CONFIGURATION
QFP5-80pin
SEG39
SEG40
COM16
COM15
COM14
COM13
COM12
COM11
COM10
COM9
COM8
COM7
COM6
COM5
COM4
COM3
COM2
COM1
DB7
DB6
DB5
DB4
DB3
DB2
PIN DESCRIPTION
Symbol
RS
R/W
E
DB0 to DB7
LP
XSCL
FR DO
COM 1 to COM16
SEG1 to SEG40
V1 to V5
V
DD
V
SS
OSC1 OSC2
SEG38 SEG37 SEG36 SEG35 SEG34 SEG33 SEG32 SEG31 SEG30 SEG29 SEG28 SEG27 SEG26 SEG25 SEG24 SEG23
No. of signals
1 1 1 8 1 1 1 1
16
40
5 1 1
2
DB1
404550556065
DB0 E R/W
70
SED1278F
INDEX
75
80
510152025
1
SEG22
SEG21
SEG20
SEG19
SEG18
SEG17
SEG16
SEG15
SEG14
SEG13
SEG12
SEG11
SEG10
SEG9
SEG8
SEG7
SEG6
SEG5
SEG4
SEG3
SEG2
SEG1
RS D0
35
FR
DD
V XSCL LP V5
30
V4 V3 V2 V1 OSC2
SS
V
OSC1
Function Register select signal Read/write select signal Read/write execute signal Data bus Data latching pulse Data transfer clock LCD AC driving signal Serial data Common outputs
COM9 to COM16: non-select for 1/8 duty COM12 to COM16: non-select for 1/11 duty
Segment outputs LCD driving power (V
>
VSS)
=
5
+5V 0V (GND) Used to connect resistor (typ. 91K-ohms) for oscillation; OSC1 is for external clock input.
Unit: mm
1
1
RS
R/W E Operation
0 0
1 1
ABSOLUTE MAXIMUM RATINGS
Rating Supply voltage (1) Supply voltage (2) Input voltage Output voltage Power dissipation Operating temperature Storage temperature Soldering temperature and time
Note: The following condition must always hold true: V
2
Symbol
V
V1 to V
V
P T T T
0 11
0
DD
1
>
>
V
V
1
=
=
1
V
DD
5
I O D
opr stg sol
Instruction write cycle Busy flag read cycle Address counter read cycle
DD RAM or CG RAM data write cycle DD RAM or CG RAM data read cycle
260˚C 10s (at lead)
>
>
V
V
2
3
=
=
Value
-0.3 to 7.0
-0.3 to V
-0.3 to V
-0.3 to V
-20 to 75
-65 to 150
>
V
4
5
=
300
DD DD DD
+0.3 +0.3 +0.3
(VSS=0V, Ta=25˚C)
Unit
V V V V
mW
˚C ˚C —
ELECTRICAL CHARACTERISTICS
DC Characteristics
Characteristic
"H" level input voltage (1) "L" level input voltage (1) "H" level input voltage (2) "L" level input voltage (2) "H" level output voltage (1) "L" level output voltage (1)
"H" level output voltage (2) "L" level output voltage (2)
Driver-on resistor (COM) Driver-on resistor (SEG) I/O leakage current Pull-up MOS current
Symbol
V
IH1
V
IL1
V
IH2
V
IL2
V
OH1
V
OL1
V
OH2
V
OL2
R
COM
R
SEG
I
IL
-I
P
Rf oscillation, from
Supply current
I
OP
external clock
V External clock operation External clock operating frequency External clock duty External clock rise time External clock fall time
f
EXTCL
Duty
tr
EXTCL
tf
EXTCL
Internal clock operation (Rf oscillation) Oscillation frequency
f
OSC
Internal clock operation (Ceramic filter oscillation) Oscillation frequency LCD driving voltage
V
f
OSC
LCD
Condition
I
=-0.205mA
OH
I
=1.6mA
OL
I
=-0.04mA
OH
=0.04mA
I
OL
COM-Vn
SEG-Vn
V
=0 to V
I
|=0.5V
|=0.5V
DD
|V |V
VDD=5V
=5V, fosc=fCP=270kHz
DD
R
=91K ±2%
f
Ceramic filter
V
DD-V5
Applicable
Pin
DB0~DB7
RS, R/W, E
OSC1
DB0~DB7
XSCL
LP
DO COM1~16 SEG1~40
V
DD
SED1278F/D
=5.0V±10%, VSS=0V, Ta=-20 to 75˚C)
(V
DD
Min.
2.0
V
VDD-1.0
V
2.4
0.9V
125
190
245
3.0
— — — — 50
45
SS
SS
-
-
DD
Typ.
— — — — — —
— —
2
2.5 —
125
0.5
250
50 — —
270
250
Max.
V
0.8
V
1.0
0.4
0.1V 10 10
250
0.8
350
55
0.2
0.2
350
255 V
DD
DD
DD
1
DD
Unit
V V V V V V
V
V k k
A A
mA
kHz
% S S
kHz
kHz
V
AC Characteristics Read Cycle
Characteristic Enable cycle time Enable "H" level pulse width Enable rise/fall time RS, R/W setup time RS, R/W address hold time Read data output delay Read data hold time
Write Cycle
Characteristic Enable cycle time Enable "H" level pulse width Enable rise/fall time RS, R/W setup time RS, R/W address hold time Data setup time Write data hold time
Symbol
t
cycE
t
WEH
trE, t
fE
t
AS
t
AH
t
RD
t
DHR
Symbol
t
cycE
t
WEH
trE, t
fE
t
AS
t
AH
t
DS
t
DH
Condition
CL=100pF
(VDD=5.0V±10%, VSS=0V, Ta=-20 to 75˚C)
Min.
500 220
— 40 10 — 20
Typ.
— — — — — — —
Max.
— 25 — —
120
(VDD=5.0V±10%, VSS=0V, Ta=-20 to 75˚C)
Min.
500 220
— 40 10 60 10
Typ.
— — — — — — —
Max.
— — 25 — — — —
Unit
ns ns ns ns ns ns ns
UnitCondition
ns ns ns ns ns ns ns
3
SED1278F/D
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
Data
V
IL1
V
IL1
V
IL1
V
IL1
V
IH1
V
IL1
E
DB0 to DB7
t
AS
t
cycE
t
WEH
t
DS
t
AH
t
AH
t
fE
t
fE
t
DH
Write Cycle
R/W
Timing Chart
DISPLAY COMMAND
CLEAR DISPLAY CURSOR HOME ENTRY MODE SET
DISPLAY ON/OFF
CURSOR/DISPLAY SHIFT
SYSTEM SET
SET CGRAM ADDRESS SET DDRAM ADDRESS READ BUSY FLUG/
WRITE DATA READ DATA
4
Parameter NoteRS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
0 0 0
0
0
0
0 0 0
0
0
0
0
0
BF
0
0
0
0
0
0
0
0
0
0
1
1
0 0
0
0
0
0 0 1
0 0 0
0
0
1
0
0
0
1
DL
AC
ADDRESS COUNTER
Don‘t care
0
1 1
1
Write Data Read Data
0
0
0
0
0
1
1
D
S/C
R/L
N
F
A
CG
A
DD
I/D
C
0
1
1
1
I/D
DB1=1: Increment, DB1=0: Decrement DB0=1: The display is shifted. DB0=0: The display is not shifted.
C
DB2=1: Display on DB2=0: Display off DB1=1: Cursor on DB1=0: Cursor off DB0=1: Brinking on DB0=0: Brinking off
DB3=1: Shifts display one character DB2=1: Right shift, DB2=0: Left shift
DB4=1: 8 bits, DB4=0: 4 bits DB3=1: 2 lines display (1/16 duty), DB3=0: 1 line display
DB2=1: 5 10 dots, 1/11 duty
( )
DB2=0: 5 7 dots, 1/8 duty The address length that can be set is 64 addresses. The address length that can be set is 80 addresses. DB7=1: Busy (instruction not accepted)
DB7=0: Ready (instruction accepted)
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