SSD1821 Solomon Systech, SSD1821 Datasheet - Page 25

• Manufacturer Part Number: SSD1821
• Description: (SSD1820A / SSD1821) LCD Segment / Common Driver
• Manufacturer: Solomon Systech

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* The formula for the temperature coefficient is:
TC(%)=
PTC0
PTC1
V
V
I
SOLOMON
V
V
IL
VL6
VL6
V
V
V
V
V
V
V
V
V
V
I
C
I
I
VL6
OH1
OL1
OH
OL
O Z
IH1
IL1
/I
L6
L5
L4
L3
L2
L6
L5
L4
L3
L2
I N
I H
Output High Voltage (D
Output Low Voltage (D
LCD Driving Voltage Source (VL6 Pin)
LCD Driving Voltage Source (VL6 Pin)
Input high voltage
Input Low voltage
LCD Display Voltage Output
LCD Display Voltage Inpu
Output High Current Source
Output Low Current Drain
Output Tri-state Current Drain Source
Input Current
Input Capacitance
Variation of VL6 Output (1.8V < V
Temperature Coefficient Compensation*
(D
(D
(D
(all logic pins)
Temperature Coefficient 0
Temperature Coefficient 1
(RES, PS0, PS1, CS, D/C, R/W, D
INTRS)
(V
(V
V
INTRS)
(RES , PS0, PS1, CS , E, D/C, R/W, D
REF, INTRS)
(RES, PS0, PS1, CS, D/C, R/W, D
L6
0
0
0
L6
L6
-D
-D
-D
, V
, V
at 50°C - V
7
7
7
50°C - 0°C
)
)
)
L5
L5
, V
, V
L4
L4
, V
, V
L6
L3
L3
at 0°C
, V
, V
0
0
-D
L2
L2
-D
7
Pins)\
Pins)
7
)
)
X
V
DD
L6
at 25°C
1
< 3.0V)
0
0
-D
-D
7
7
, REF,
, REF,
0
X 100%
-D
7
,
I
I
Regulator Enabled (VL6 voltage depends on Int/Ext
Contrast Control)
Regulator Disable
Bias Divider Enabled, 1:a bias ratio
Voltage reference to V
tor, Bias Divider Disabled
V
V
Regulator
Enabled, Set Contrast Control Register = 0
Voltage Regulator Enabled (POR for SSD1820A)
Voltage Regulator Enabled (POR for SSD1821)
out
out
out
out
= +500 A
= -500 A
=V
=0.4V
DD
-0.4V
Enabled,
SS
Internal
, External Voltage Genera-
Contrast
Control
0.8*V
0.8*V
-0.04
-0.06
V
V
V
V
V
V
50
-1
-1
D
0
D
0
DD
-
-
-
-
-
-
SS
-
-
-
L5
L4
L3
L2
D
D
REV 1.4
(a-1)/a*V
(a-2)/a*V
01/03
Floating
2/a*V
1/a*V
-0.05
-0.07
V
5
-
-
-
-
-
L6
-
-
-
-
-
-
-
-
-
2
L6
L6
SSD1820A/21
L6
L6
0.2*V
0.2*V
-0.06
-0.08
V
V
V
V
V
V
V
V
0.5
-50
7.5
CC
D
D
1
1
D D
D D
C C
-
-
-
-
-
-
L6
L5
L4
L3
-
-
-
D
D
25
pF
%
%
%
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
A
A
A
A