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HD44780 Datasheet(PDF) 51 Page - Hitachi Semiconductor

Part No. HD44780
Description  Dot Matrix Liquid Crystal Display Controller/Driver
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Maker  HITACHI [Hitachi Semiconductor]
Homepage  http://www.renesas.com/eng
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 51 page
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HD44780U
51
DC Characteristics (V
CC = 4.5 to 5.5 V, Ta = –30 to +75°C*
3)
Item
Symbol
Min
Typ
Max
Unit
Test Condition
Notes*
Input high voltage (1)
(except OSC1)
VIH1
2.2
V
CC
V6
Input low voltage (1)
(except OSC1)
VIL1
–0.3
0.6
V
6
Input high voltage (2)
(OSC1)
VIH2
V
CC–1.0
V
CC
V15
Input low voltage (2)
(OSC1)
VIL2
1.0
V
15
Output high voltage (1)
(DB0–DB7)
VOH1
2.4
V
–I
OH = 0.205 mA
7
Output low voltage (1)
(DB0–DB7)
VOL1
0.4
V
I
OL = 1.2 mA
7
Output high voltage (2)
(except DB0–DB7)
VOH2
0.9 V
CC
——
V
–I
OH = 0.04 mA
8
Output low voltage (2)
(except DB0–DB7)
VOL2
0.1 V
CC
VI
OL = 0.04 mA
8
Driver on resistance
(COM)
RCOM
2
20
k
Ω±Id = 0.05 mA,
VLCD = 4 V
13
Driver on resistance
(SEG)
RSEG
2
30
k
Ω±Id = 0.05 mA,
VLCD = 4 V
13
Input leakage current
I
LI
–1
1
µA
VIN = 0 to V
CC
9
Pull-up MOS current
(DB0–DB7, RS, R/
W)
–I
p
50
125
250
µAV
CC = 5 V
Power supply current
I
CC
350
600
µAR
f oscillation,
external clock
V
CC = 5 V,
f
OSC = 270 kHz
10, 14
LCD voltage
VLCD1
3.0
11.0
V
V
CC–V5, 1/5 bias
16
VLCD2
3.0
11.0
V
V
CC–V5, 1/4 bias
16
Note:
*
Refer to the Electrical Characteristics Notes section following these tables.




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