Datasheet

CHAPTER 27 ELECTRICAL SPECIFICATIONS (STANDARD PRODUCTS)
User’s Manual U18698EJ1V0UD
555
Standard
p
roducts
LCD Characteristics
(1) Resistance division method
(a) Static display mode (T
A = −40 to +85°C, 1.8 V ≤ VLCD ≤ VDD ≤ 5.5 V, VSS = 0 V)
Note 3
Parameter Symbol Conditions MIN. TYP. MAX. Unit
LCD drive voltage VLCD Note 3 VDD V
LCD divider resistor
Note 1
RLCD 60 100 150 kΩ
LCD output resistor
Note 2
(Common)
R
ODC 40 kΩ
LCD output resistor
Note 2
(Segment)
R
ODS 200 kΩ
(b) 1/3 bias method (T
A = −40 to +85°C, 1.8 V ≤ VLCD ≤ VDD ≤ 5.5 V, VSS = 0 V)
Note 3
Parameter Symbol Conditions MIN. TYP. MAX. Unit
LCD drive voltage VLCD Note 3 VDD V
LCD divider resistor
Note 1
RLCD 60 100 150 kΩ
LCD output resistor
Note 2
(Common)
R
ODC 40 kΩ
LCD output resistor
Note 2
(Segment)
R
ODS 200 kΩ
(c) 1/2 bias method (T
A = −40 to +85°C, 1.8 V ≤ VLCD ≤ VDD ≤ 5.5 V, VSS = 0 V)
Note 3
1/4 bias method (T
A = −40 to +85°C, 4.5 V ≤ VLCD ≤ VDD ≤ 5.5 V, VSS = 0 V)
Note 3
Parameter Symbol Conditions MIN. TYP. MAX. Unit
LCD drive voltage VLCD Note 3 VDD V
LCD divider resistor
Note 1
RLCD 60 100 150 kΩ
LCD output resistor
Note 2
(Common)
R
ODC 40 kΩ
LCD output resistor
Note 2
(Segment)
R
ODS 200 kΩ
Notes 1. Internal resistance division method only.
2. The output resistor is a resistor connected between one of the V
LC0, VLC1, VLC2 and VSS pins, and either of
the SEG and COM pins.
3. Set VAON based on the following conditions.
<When set to the static display mode>
• When 2.0V≤ V
LCD ≤ VDD ≤ 5.5 V: VAON = 0
• When 1.8V≤ V
LCD ≤ VDD ≤ 3.6 V: VAON = 1
<When set to the 1/3 bias method>
• When 2.5V≤ V
LCD ≤ VDD ≤ 5.5 V: VAON = 0
• When 1.8V≤ V
LCD ≤ VDD ≤ 3.6 V: VAON = 1
<When set to the 1/2 bias method>
• When 2.7V≤ V
LCD ≤ VDD ≤ 5.5 V: VAON = 0
• When 1.8V≤ V
LCD ≤ VDD ≤ 3.6 V: VAON = 1
<When set to the 1/4 bias method>
• When 4.5V≤ V
LCD ≤ VDD ≤ 5.5 V: VAON = 0