RCM2122R Ver la hoja de datos (PDF) - ROHM Semiconductor
Número de pieza
componentes Descripción
Fabricante
RCM2122R Datasheet PDF : 10 Pages
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Liquid Crystal Displays
!Power supply sample connect
VDD
LCD MODULE
VO
VDD−VO
VSS
VR : 10kΩ
VDD
Fig.1
(Note) As operating voltage, (VDD-VO)V is charged to LCD.
Optimum operating voltage changes by viewing angle and temperature.
Contrast can be changed by adjustment of VO, so please use LCD module
at most suitable condition by each operating situation.
When you fix the VO, please check using by actual set.
RCM2122R
!Absolute maximum ratings (Ta=25°C)
Parameter
Supply voltage for logics
Symbol
Min.
Max.
Unit
VDD-VSS
−0.3
6.0
V
Supply voltage for driving LCD
Input voltage
Operating temperature rang
Storage temperature rang
VDD-VO
VIN
Topr
Tstg
−0.3
6.0
V
−0.3 VDD+0.3
V
0
50
ËšC
−20
70
ËšC
!Electrical characteristics (VDD=5.0±5%, Ta=25°C)
Parameter
Supply voltage for logics
Operating voltage
Input "H" level voltage (1)
Input "L" level voltage (1)
Input "H" level voltage (2)
Input "L" level voltage (2)
Output "H" level voltage
Output "L" level voltage
Power supply current
Symbol
VDD
VDD−VO
VIH1
VIL1
VIH2
VIL2
VOH
VOL
IDD
Min.
Typ.
4.75
5.0
3.0
−
2.3
−
0
−
0.8VDD
−
0
−
2.4
−
−
−
−
1.4
Max.
5.25
VDD
VDD
0.8
VDD
0.2VDD
−
0.4
3.6
Unit
Conditions
V
V
V
All terminals except E terminal
V
V
E
V
V
IOH=−0.205mA
V
IOL=1.6mA
mA
VDD=5.0V, fosc=270kHz
!Optical characteristics (Ta=25°C)
Parameter
Symbol
Min.
Typ.
Max.
Unit
Conditions
Rise time
tr
−
100
200
ms
θ=10˚, φ=0˚
Decay time
td
−
150
250
ms
θ=10˚, φ=0˚
Contrast ratio
K
1.4
2.0
−
−
θ=10˚, φ=0˚
Viewing angle
θ1
−
−
10
deg
φ=0˚, K≥1.4
θ2
40
−
−
deg
φ
±30
−
−
deg θ=20˚, K≥1.4
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