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HD404849 Datasheet, PDF (117/125 Pages) Hitachi Semiconductor – 4-Bit Single-Chip Microcomputer | |||
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HD404849 Series
I/O Characteristics for High-Current Pins (HD404848/HD4048412/HD404849: VCC = 2.7 to 6.0 V,
GND = 0 V, Ta = â20°C to +75°C; HD4074849: VCC = 2.7 to 5.5 V, GND = 0 V, Ta = â20°C to +75°C,
unless otherwise specified)
Item
Symbol Pin(s)
Min
Typ Max
Unit Test Condition
Input high VIH
voltage
D0âD8
0.7VCC â
VCC + 0.3 V â
Input low
VIL
voltage
D0âD8
â0.3
â
0.3VCC V â
Output high VOH
voltage
D0âD8
VCC â 1.0 â
â
V âIOH = 0.5 mA
Output low VOL
voltage
D0âD8
â
â 0.4
V IOL = 0.4 mA
I/O leakage |IIL|
current
D0âD8
â
â 2.0
V IOL = 15 mA,
VCC = 4.5 V to 6.0 V
â
â1
µA Vin = 0 V to VCC
Pull-up MOS âIPU
current
D0âD8
10
50 150
Note: 1. The test condition of HD4074849 is VCC = 4.5 V to 5.5 V.
2. Output buffer current is excluded.
µA VCC = 3 V,
Vin = 0 V
Note
1
2
LCD Circuit Characteristics (HD404848/HD4048412/HD404849: VCC = 2.7 to 6.0 V, GND = 0 V, Ta =
â20°C to +75°C; HD4074849: VCC = 2.7 to 5.5 V, GND = 0 V, Ta = â20°C to +75°C, unless otherwise
specified)
Item
Symbol Pin(s)
Min
Typ Max
Unit Test Condition
Note
Segment
VDS
SEG13âSEG44 â
â 0.6
V Id = 3 µA
1
driver voltage
drop
Common
VDC
COM1âCOM4 â
â 0.3
V Id = 3 µA
1
driver voltage
drop
LCD power RW
supply
division
resistance
50
300 900
k⦠Between V1 and GND
LCD voltage VLCD
V1
2.7
â
VCC
V
2
Notes: 1. VDS and VDC are the voltage drops from power supply pins V1, V2, V3, and GND to each segment
pin and each common pin, respectively.
2. When VLCD is supplied from an external source, the following relations must be retained:
VCC ⥠V1 ⥠V2 ⥠V3 ⥠GND
117
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