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23.6
LCD Characteristics
Table 23-9 LCD Characteristics
Condition :
V
= PWMV
CC
V
= 4.5 V to AV
ref
(regular specifications), Ta = –40 to +85ºC (wide-range specifications)
Item
Symbol
Segment driver
VDS
step-down voltage
Common driver
VDC
step-down voltage
LCD power supply
RLCD
division resistor
LCD voltage
VLCD
Notes: *1 Voltage step-down between power supply pins V1, V2, V3, and V
*2 If the LCD voltage is provided by an external power supply, the following relationship
must be maintained: LPV
= 4.5 V to 5.5 V, LPV
CC
, V
= PWMV
CC
SS
Applicable Pins
SEG1 to SEG24
(H8S/2646,
H8S/2646R,
H8S/2645)
SEG1 to SEG40
(H8S/2648,
H8S/2648R,
H8S/2647)
COM1 to COM4
V1
≥ V1 ≥ V2 ≥ V3 ≥ V
CC
= 4.5 V to 5.5 V, AV
CC
= PLLV
= AV
SS
SS
SS
Standard Value
Test
Conditions Min
Typ
ID = 2 µA
—
—
ID = 2 µA
—
—
Between V1
40
300
and V
SS
4.5
—
.
SS
= 4.5 V to 5.5 V,
CC
= 0 V, Ta = –20 to +75ºC
Max Unit Notes
* 1
0.6
V
* 1
0.3
V
1000 kΩ
* 2
LPV
V
C
C
and segment pins.
SS
777
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