RCM2122R 데이터 시트보기 (PDF) - ROHM Semiconductor
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RCM2122R Datasheet PDF : 10 Pages
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Liquid Crystal Displays
(1) Difinition of θ and φ
Viewing direction (12:00)
Y [ φ=180° ]
Z [ θ=0˚ ]
θ2'
θ2
θ1' θ1
X'
Fig.2
(3) Difinition of contrast ratio K
RCM2122R
(2) Difinition of viewing angle θ1 and θ2
1.4
X
θ1
θ2
Viewing angle
Y' [ θ=0˚ ]
Viewing direction (6:00)
Fig.3
(4) Difinition of optical response time
Selected
K=B2 / B1
100
B2
Non-selected
B1
0
Driving voltage
Fig.4
Selected
condition
tr
Rise time
Fig.5
td
Decay time
!Timing characteristics
(1) Writing (VDD=5V±5%, VSS=0V, Ta=0∼+50°C)
Parameter
Enable cycle time
Enable pulse time
"H" level
"L" level
Enable rise time / decay time
Set-up time
RS, R / W, E
Address hold time
Data set-up time
Data hold time
Symbol
tCYCE
PWEH
PWEL
tEr,tEf
tAS
tAH
tDSW
tH
RS
VIL1
VIH1
tAS
Min.
Max.
500
−
220
−
280
−
−
20
40
−
10
−
60
−
10
−
VIH1
VIL1
tAH
R/W
E
DB0∼DB7
VIL1
PWEH
VIL1
tAH
tEf
VIL2
tEr
VIH2
VIH2
tDSW
VIL2
tH
PWEL
VIL2
VIH1
VIL1
Valid data
VIH1
VIL1
tCYCE
Fig.6
Unit
ns
ns
ns
ns
ns
ns
ns
ns
Fig.6
Fig.6
Fig.6
Fig.6
Fig.6
Fig.6
Fig.6
Fig.6
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