HD44780U Datasheet, PDF (51/59 Pages) Hitachi Semiconductor – Dot Matrix Liquid Crystal Display Controller/Driver

HD44780U
DC Characteristics (V_CC = 4.5 to 5.5 V, T_a = –30 to +75°C*³)
Item
Symbol Min
Typ
Max
Unit
Test Condition
Input high voltage (1) VIH1 2.2
—
(except OSC1)
V_CC
V
Input low voltage (1) VIL1
–0.3
—
(except OSC1)
0.6
V
Input high voltage (2) VIH2
(OSC1)
V_CC–1.0 —
V_CC
V
Input low voltage (2) VIL2
—
—
1.0
V
(OSC1)
Output high voltage (1) VOH1 2.4
—
—
V
(DB0–DB7)
–I_OH = 0.205 mA
Output low voltage (1) VOL1 —
—
0.4
V
(DB0–DB7)
I_OL = 1.2 mA
Output high voltage (2) VOH2 0.9 V_CC —
—
V
(except DB0–DB7)
–I_OH = 0.04 mA
Output low voltage (2) VOL2 —
—
0.1 V_CC V
(except DB0–DB7)
I_OL = 0.04 mA
Driver on resistance RCOM —
2
(COM)
20
kΩ
±Id = 0.05 mA,
VLCD = 4 V
Driver on resistance RSEG —
2
(SEG)
30
kΩ
±Id = 0.05 mA,
VLCD = 4 V
Input leakage current I_LI
–1
—
1
µA
VIN = 0 to V_CC
Pull-up MOS current –I_p
50
125
250
µA
V_CC = 5 V
(DB0–DB7, RS, R/W)
Power supply current I_CC
—
350
600
µA
R_f oscillation,
external clock
V_CC = 5 V,
f_OSC = 270 kHz
LCD voltage
VLCD1 3.0
—
11.0
V
V_CC–V5, 1/5 bias
VLCD2 3.0
—
11.0
V
V_CC–V5, 1/4 bias
Note: * Refer to the Electrical Characteristics Notes section following these tables.
Notes*
6
6
15
15
7
7
8
8
13
13
9
10, 14
16
16
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