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.
Values
Applicable Test Reference
Item
Symbol Pins
Conditions
Min
Typ
Max
Unit Figure
Segment driver
V
DS
SEG
1
to I
D
= 2 µA
—
—
0.6
V
*
1
drop voltage
SEG
32
V
1
= 2.7 to 5.5 V
Common driver
V
DC
COM
1
to I
D
= 2 µA
—
—
0.3
V
*
1
drop voltage
COM
4
V
1
= 2.7 to 5.5 V
LCD power supply R
LCD
Between V
1
0.5
3.0
9.0
M
Ω
split-resistance
and V
SS
On-chip liquid
V
LP
V
0
—
5.0
—
V
*
2
crystal display
Reference
power supply
value
voltage
Liquid crystal
V
LCD
V
1
2.2
—
5.5
V
*
3
display voltage
Notes: 1. The voltage drop from power supply pins V
1
, V
2
, V
3
, and V
SS
to each segment pin or
common pin.
2. The output voltage in step-up constant-voltage power supply operation (unloaded).
3. When the liquid crystal display voltage is supplied from an external power source, ensure
that the following relationship is maintained: V
1
≥
V
2
≥
V
3
≥
V
SS
.
Table 15-7 AC Characteristics for External Segment Expansion
V
CC
= 1.8 V to 5.5 V, V
SS
= 0.0 V, T
a
= –20°C to +75°C (including subactive mode) unless
otherwise specified.
Values
Applicable Test Reference
Item
Symbol Pins
Conditions
Min
Typ
Max
Unit Figure
Clock high width
t
CWH
CL
1
, CL
2
*
1
800
—
—
ns
Figure 15-9
Clock low width
t
CWL
CL
2
*
1
800
—
—
ns
Figure 15-9
Clock setup time
t
CSU
CL
1
, CL
2
*
1
500
—
—
ns
Figure 15-9
Data setup time
t
SU
DO
*
1
300
—
—
ns
Figure 15-9
Data hold time
t
DH
DO
*
1
300
—
—
ns
Figure 15-9
M delay time
t
DM
M
–1000 —
1000 ns
Figure 15-9
Clock rise and fall
t
CT
CL
1
, CL
2
—
—
170
ns
Figure 15-9
times
Note:
1. Value when the frame frequency is set to between 30.5 Hz and 488 Hz.
373