HD404818 Datasheet, PDF (93/100 Pages) Hitachi Semiconductor – 16-digit LCD driver

HD404818 Series
Input/Output Characteristics for High-Current Pins (HD40L4812, HD40L4814, HD40L4816,
HD40L4818: V_CC = 2.7 to 6 V; HD407L4818: V_CC = 3 to 5.5 V; GND = 0 V, T_a = –20°C to +75°C,
unless otherwise specified)
Item
Symbol
Input high V_IH
voltage
Input low
V_IL
voltage
Output high V_OH
voltage
Pull-up MOS –I_PU
current
Output low V_OL
voltage
Pin
D₀–D₉
D₀–D₉
D₀–D₉
D₀–D₉
D₀–D₉
Min
Typ
0.7V_CC
–0.3
V_CC –1.0
5
40
Input/output |I_IL|
leakage
current*
D₀–D₉
Note: * Output buffer current is excluded.
Max
V_CC + 0.3
0.3V_CC
90
2.0
0.4
1
Unit
V
V
V
µA
V
V
µA
Test Condition
–I_OH = 0.5 mA
V_CC = 3 V,
V_in = 0 V
I_OL = 15 mA,
V_CC = 4.5 to 6 V
I_OL = 0.4 mA
V_in = 0 V – V_CC
Liquid Crystal Circuit Characteristics (HD40L4812, HD40L4814, HD40L4816, HD40L4818: V_CC =
2.7 to 6 V; HD407L4818: V_CC = 3 to 5.5 V; GND = 0 V, T_a = –20°C to +75°C, unless otherwise
specified)
Item
Symbol Pin
Min
Typ Max Unit Test Condition Notes
Segment driver voltage V_DS
drop
SEG1 to
SEG32
0.6
V
I_d = 3 µA
1
Common driver voltage V_DC
drop
COM1 to
COM4
0.3
V
I_d = 3 µA
1
LCD power supply
R_W
dividing resistance
100
300 900 kΩ
LCD voltage
V_LCD
V₁
2.7
V_CC
V
2, 3
Notes: 1. Voltage drops from pins V₁, V₂, V₃, and GND to each segment and common pin.
2. Keep the relation V_CC ≥ V₁ ≥ V₂ ≥ V₃ ≥ GND when V_LCD is supplied by an external power supply.
3. V_LCD min. = 2.7 V (HD40L4812, HD40L4814, HD40L4816, HD40L4818)
V_LCD min. = 3 V (HD407L4818)
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