HD44780U Datasheet, PDF (48/59 Pages) Hitachi Semiconductor – Dot Matrix Liquid Crystal Display Controller/Driver

HD44780U
DC Characteristics (V_CC = 2.7 to 4.5 V, T_a = –30 to +75°C*³)
Item
Symbol Min
Typ
Max
Unit
Test Condition Notes*
Input high voltage (1) VIH1
0.7V_CC —
V_CC
V
6
(except OSC1)
Input low voltage (1) VIL1
–0.3
—
0.55
V
6
(except OSC1)
Input high voltage (2) VIH2
0.7V_CC —
V_CC
V
15
(OSC1)
Input low voltage (2) VIL2
—
—
0.2V_CC
V
15
(OSC1)
Output high voltage (1) VOH1 0.75V_CC —
—
V
(DB0–DB7)
–I_OH = 0.1 mA 7
Output low voltage (1) VOL1 —
—
0.2V_CC
V
(DB0–DB7)
I_OL = 0.1 mA
7
Output high voltage (2) VOH2 0.8V_CC —
—
V
(except DB0–DB7)
–I_OH = 0.04 mA 8
Output low voltage (2) VOL2 —
—
0.2V_CC
V
(except DB0–DB7)
I_OL = 0.04 mA 8
Driver on resistance R_COM
—
2
(COM)
20
kΩ
±Id = 0.05 mA, 13
VLCD = 4 V
Driver on resistance R_SEG
—
2
(SEG)
30
kΩ
±Id = 0.05 mA, 13
VLCD = 4 V
Input leakage current I_LI
–1
—
1
µA
VIN = 0 to V_CC 9
Pull-up MOS current –I_p
10
50
120
µA
V_CC = 3 V
(DB0–DB7, RS, R/W)
Power supply current I_CC
—
150
300
µA
R_f oscillation, 10, 14
external clock
V_CC = 3 V,
f_OSC = 270 kHz
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.
48