參數(shù)資料
型號(hào): 44780
廠商: Hitachi,Ltd.
英文描述: Dot Matrix Liquid Crystal Display Controller/Driver
中文描述: 點(diǎn)陣式液晶顯示控制器/驅(qū)動(dòng)器
文件頁數(shù): 43/59頁
文件大?。?/td> 316K
代理商: 44780
HD44780U
48
DC Characteristics (V
CC = 2.7 to 4.5 V, Ta = –30 to +75°C*
3)
Item
Symbol
Min
Typ
Max
Unit
Test Condition Notes*
Input high voltage (1)
(except OSC1)
VIH1
0.7V
CC
—V
CC
V6
Input low voltage (1)
(except OSC1)
VIL1
–0.3
0.55
V
6
Input high voltage (2)
(OSC1)
VIH2
0.7V
CC
—V
CC
V15
Input low voltage (2)
(OSC1)
VIL2
0.2V
CC
V15
Output high voltage (1)
(DB0–DB7)
VOH1
0.75V
CC
——
V
–I
OH = 0.1 mA
7
Output low voltage (1)
(DB0–DB7)
VOL1
0.2V
CC
VI
OL = 0.1 mA
7
Output high voltage (2)
(except DB0–DB7)
VOH2
0.8V
CC
——
V
–I
OH = 0.04 mA
8
Output low voltage (2)
(except DB0–DB7)
VOL2
0.2V
CC
VI
OL = 0.04 mA
8
Driver on resistance
(COM)
R
COM
2
20
k
±Id = 0.05 mA,
VLCD = 4 V
13
Driver on resistance
(SEG)
R
SEG
2
30
k
±Id = 0.05 mA,
VLCD = 4 V
13
Input leakage current
I
LI
–1
1
A
VIN = 0 to V
CC
9
Pull-up MOS current
(DB0–DB7, RS, R/
W)
–I
p
10
50
120
AV
CC = 3 V
Power supply current
I
CC
150
300
AR
f oscillation,
external clock
V
CC = 3 V,
f
OSC = 270 kHz
10, 14
LCD voltage
VLCD1
3.0
11.0
V
CC–V5, 1/5 bias
16
VLCD2
3.0
11.0
V
CC–V5, 1/4 bias
16
Note:
*
Refer to the Electrical Characteristics Notes section following these tables.
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