Document
LM027
• 24 Character x 1 line • Built-in control LSI HD44780 type (see page 23) • +5V single power supply
MECHANICAL DATA (Nominal dimensions) Module size . . . . . . . . . . . 126W x 36H x 120 (max) mm Effective display area . . . . . . . . . . . 100W x 13.8H mm Character size (5 x 10 dots) ........ 3.15W x 7.9H mm Pitch ......................... 3.75 mm Dot size . . . . . . . . . . . . . . . . . . . . . 0.55W x 0.7H mm Weight ........................... about 40 g
ABSOLUTE MAXIMUM RATINGS
min.
Power supply for logic (Voo-Vss ) . . . . . . . . 0
Power supply for LCD drive (Voo -Vo) . . . . . 0
Input voltage (Vi) . . . . . . . . . . . . . . . . . . .Vss
Operating temperature (Ta) . . . . . . . . . . . . . 0
Storage temperature (Tstg) . . . . . . . . . . . . -20
max. 7.0 V 13.5 V
Voo V 50°C 70°C
ELECTRICAL CHARACTERISTICS
Ta = 25°C, Voo = 5.0 V ± 0.25 V
Input "high" voltage (ViH ) . . . . . . . . . . . . . . 2.2 V min. Input "low" voltage (ViL ) . . . . . . . . . . . . . . 0.6 V max. Output high voltage (VOH ) (-IOH=0.2 mAl .. 2.4 V min. Output low voltage (VOL) (lOL = 1.2 mAl .... 0.4 V max. Power supply current (100 ) (V 00 = 5.0 V) .. 0.5 mA typo
2.0mA max. Power supply for LCD drive (Recommended) (Voo-Vo)
Du=1/8 Du=1/11 atTa=0°C . . . . . . . . . . 4.0 4.2 V typo at Ta = 25°C . . . . . . . . . 3.7 3.8 V typo at Ta = 50°C . . . . . . . . . 3.3 3.3 V typo
INTERNAL PIN CONNECTION
Pin No. Symbol
1
Vss
2
Voo
3
Vo
4
RS
Level H/L
5
R/W
H/L
6
E
H, H-+L
7
DBO
H/L
a
DB1
H/L
9
DB2
H/L
10
DB3
H/L
11
DB4
H/L
12
DB5
H/L
13
DB6
H/L
14
DB7
H/L
Function
OV
+5V
Power supply
-
L: Instruction code input H: Data input
H: Data read (LCD module-+MPU) L: Data write (LCD module+-MPU)
Enable signal
Data bus line Note (1), Note (2)
Note: In the HD447aO, the data can be sent in either 4-bit 2-operation or a-bit 1-operation so that it can interface to both 4 and a bit MPU's. (1) When interface data is 4 bits long, data is transferred using only 4
buses of DB. - DB, and DBa -DB 3 are not used. Data transfer between the HD447aO and the MPU completes when 4-bit data is transferred twice. Data of the higher order 4 bits (contents of DB. -DB 7 when interface data is a bits long) is transferred first and then lower order 4 bits (contents of DBa -DB 3 when interface data is a bits long). (2) When interface data is a bits long, data is transferred using a data buses of DBa -DB 7 •
OPTICAL DATA . . . . . . . . . . . . . . . . . . . . . . . See page 8
DDDDD ~ ~I
00000
00000
00000
DDODD
DDDDD DDDDD
00
DDDDD
ODDDDDDDDO
o DDDDD_----'---
,: III:;>; .1
Fig. 1 Display pattern
@HITACHI
Unit: mm
45
2.5±O.5
~.
12.6±O.3
"~ '
~
.1 2.54
II 1 2 3
=,
~
0
~ ;;;
DOD
126.0±O.5 121.0±O.3 110.0+0.3
./ 14-'1.0±O.1 II
-
5.~_ - l -
lO.5±O.5
5.3±O.5
I---
89.4±O.2 100.0±O.3
-----.I
,=
0 -
=
I
~'" '"
~
~
0
I
'" +1
~
I
~ oi
.1 4.7-5.3
l~
~
·1 4-.2.7±O.2
~iz;
r 7.3m" . I
~~ ='w
ru
.U
' j---' LJ
-
Fig. 2 External dimensions
g"
~
*Ie height
Unit: mm
r--~-----------------------,
I
--~I ~~ R/ IV ---+--<~
I
I
LCD
I
RS
I
D~O
LClllI
41i
I
I
DB?
I
"DD ~ \',---1
HD44l1111
HD4411i1i
I
I
-
-
-
-
IL_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
I
.J
Fig. 3 Block diagram
VDD
LCM
Va
( +5V)
VDD- Va
_<:5-: VR
-'--
FDO
Vss ,b
VDD-VO: LCD driving voltage YR. 10k n ~20kn
Fig.4 Power supply
46
@HITACHI
TIMING CHARACTERISTICS
Item Enable cycle time Enable pulse width 1--Enable rise/fall time RS, R/W set up time Data delay time Data set up time Hold time
Symbol
tcyc
PwEH
-
-.-~------
----
tEr' tEf
tAS
tOOR
tosw tH
Test condition Fig. 5, Fig. 6 Fig. 5, Fig. 6 Fig. 5, Fig. 6 Fig. 5, Fig. 6
Fig.6 Fig.5 Fig. 5, Fig. 6
min.
typo
max.
Unit
1.0
-
--
--_.-
450
-
-
----
-
-
).LS
-----ns
------
-
-
25
ns
- .-
-
140
-
-
ns
.
- - - - - -~---- - - - - - - - -
.-
-
-
320
ns
- - -c------ ---
-
195
-
-
ns
.-
----~----
--
20
-
-
ns
RS =>}22V 0_6V ~_',_s_
R/W 0.6\
221X
l~ ~_ _ _ _ _ _ _ __ I
2.2\' ~_ _ _ _ _ _---'I ll.(i\'
- - - - - -----.--~~------------
---1
Fig.5 Interface timing (data write)
RS
Rill
080- DB7
~~~_.~r_-I-_ -'"_ '--____-----~-~r·'~::\:}(-----------
~22V I
~ ~'__-21._ _ __
1----. i"WfH
I~
------I..:).~j__h. 1i ~2~21
'
If't/JJjf/
-,J. I 121
;-
((JonV o.(lV*tf. f i'-I'-H. II- - - - - - -
[-
•I
I-"-i
----------~I-----2-.4~1
ilr-.----~
Val id Data
2AV
OAV
0.41'
~--------'C~y~C-----------
Fig.6 Interface timing (data read)
~HITACHI
47
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