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