15. Electrical Characteristics (H8/3857 Group)
Rev.3.00 Jul. 19, 2007 page 416 of 532
REJ09B0397-0300
15.2.5 LCD
Characteristics
Table 15.8 shows the LCD characteristics, and table 15.9 shows the step-up circuit characteristics,
of the H8/3855, H8/3856, and H8/3857.
Table 15.8 LCD Characteristics of H8/3855, H8/3856, and H8/3857
V
CC
= 3.0 V to 5.5 V, AV
CC
= 3.0 V to 5.5 V, V
SS
= AV
SS
= 0.0 V, T
a
= –20°C to +75°C*
4
,
including subactive mode, unless otherwise specified.
Values
Item Symbol
Applicable
Pins
Test
Conditions Min Typ Max Unit Notes
Common driver
on-resistance
R
COM
COM1 to COM32
±
Id = 0.05 mA,
V
LCD
= 4 V
⎯
6 20 k
Ω
*
1
Segment driver
on-resistance
R
SEG
SEG1 to SEG64
±
Id = 0.05 mA,
V
LCD
= 4 V
⎯
6 20 k
Ω
*
1
LCD power
supply current
I
EE
V
LCD
V
LCD
= 5.5 V,
f
x
= 32.768 kHz
⎯
20 40
μ
A
*
2
LCD power
supply voltage
V
LCD
V
LCD
V
CC
⎯
7.0 V
*
3
Notes: 1. Applies to the resistance (R
COM
) between the V1OUT, V2OUT, V5OUT, and V
SS
pins and
the common signal pins (COM1 to COM32), and the resistance (R
SEG
) between the
V1OUT, V3OUT, V4OUT, and V
SS
pins and the segment signal pins (SEG1 to SEG64),
when Id is flowing in the pins.
2. This is the current when the built-in op-amps are operating and display is halted (all
driver outputs are at the V
SS
level).
3. Specifies the voltage range in which the COM/SEG pin output voltages are within the
LCD reference voltage values (V1, V2, V3, V4, V5, and V
SS
)
±
0.15 V in the unloaded
state. A voltage not lower than V
CC
must be applied to V
LCD
.
4. The guaranteed temperature as an electrical characteristic for die type products is
75°C.
Содержание F-ZTAT H8 Series
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