HD404849 Datasheet, PDF (119/127 Pages) Hitachi Semiconductor – 4-Bit Single-Chip Microcomputer

HD404849 Series
I/O Characteristics for High-Current Pins (HD404848/HD4048412/HD404849: V_CC = 2.7 to 6.0 V,
GND = 0 V, T_a = –20°C to +75°C; HD4074849: V_CC = 2.7 to 5.5 V, GND = 0 V, T_a = –20°C to +75°C,
unless otherwise specified)
Item
Symbol Pin(s)
Min
Typ Max
Unit Test Condition
Input high V_IH
voltage
D₀–D₈
0.7V_CC —
V_CC + 0.3 V —
Input low
V_IL
voltage
D₀–D₈
–0.3
—
0.3V_CC V —
Output high V_OH
voltage
D₀–D₈
V_CC – 1.0 —
—
V –I_OH = 0.5 mA
Output low V_OL
voltage
D₀–D₈
—
— 0.4
V I_OL = 0.4 mA
I/O leakage |I_IL|
current
D₀–D₈
—
— 2.0
V I_OL = 15 mA,
V_CC = 4.5 V to 6.0 V
—
—1
µA V_in = 0 V to V_CC
Pull-up MOS –I_PU
current
D₀–D₈
10
50 150
Note: 1. The test condition of HD4074849 is V_CC = 4.5 V to 5.5 V.
2. Output buffer current is excluded.
µA V_CC = 3 V,
V_in = 0 V
Note
1
2
LCD Circuit Characteristics (HD404848/HD4048412/HD404849: V_CC = 2.7 to 6.0 V, GND = 0 V, T_a =
–20°C to +75°C; HD4074849: V_CC = 2.7 to 5.5 V, GND = 0 V, T_a = –20°C to +75°C, unless otherwise
specified)
Item
Symbol Pin(s)
Min
Typ Max
Unit Test Condition
Note
Segment
V_DS
SEG13–SEG44 —
— 0.6
V I_d = 3 µA
1
driver voltage
drop
Common
V_DC
COM1–COM4 —
— 0.3
V I_d = 3 µA
1
driver voltage
drop
LCD power R_W
supply
division
resistance
50
300 900
kΩ Between V₁ and GND
LCD voltage V_LCD
V1
2.7
—
V_CC
V
2
Notes: 1. V_DS and V_DC are the voltage drops from power supply pins V1, V2, V3, and GND to each segment
pin and each common pin, respectively.
2. When V_LCD is supplied from an external source, the following relations must be retained:
V_CC ≥ V1 ≥ V2 ≥ V3 ≥ GND
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