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15.2.5
LCD Characteristics
Table 15.6 shows the LCD characteristics.
Table 15.6 LCD Characteristics
V
= 1.8 V to 5.5 V, AV
CC
(including subactive mode) unless otherwise specified.
Item
Symbol Pins
Segment driver
V
drop voltage
Common driver
V
drop voltage
LCD power supply
R
split-resistance
Liquid crystal
V
display voltage
Notes: 1. The voltage drop from power supply pins V
common pin.
2. When the liquid crystal display voltage is supplied from an external power source,
ensure that the following relationship is maintained: V
370
= 1.8 V to 5.5 V, V
CC
Applicable Test
SEG
to
DS
1
SEG
32
COM
to
DC
1
COM
4
LCD
V
LCD
1
= AV
= 0.0 V, T
SS
SS
Conditions
Min Typ Max Unit Figure
= 2 µA
I
—
D
V
= 2.7 to 5.5 V
1
= 2 µA
I
—
D
V
= 2.7 to 5.5 V
1
Between V
and
0.5
1
V
SS
2.2
, V
, V
, and VSS to each segment pin or
1
2
3
CC
= –20°C to +75°C
a
Values
Reference
* 1
—
0.6
V
* 1
—
0.3
V
3.0
9.0
MΩ
* 2
—
5.5
V
≥ V
≥ V
≥ V
≥ V
.
1
2
3
SS
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