ssd1322z Newhaven Display International, Inc, ssd1322z Datasheet - Page 23

• Manufacturer Part Number: ssd1322z
• Description: 480 X 128, Dot Matrix High Power Oled/pled Segment/common Driver With Controller
• Manufacturer: Newhaven Display International, Inc

8.6
This block is used to derive the incoming power sources into the different levels of internal use voltage and
current.
SSD1322
•
•
•
•
SEG/COM Driving Block
V
V
V
I
current and segment current of a color is:
For example, in order to achieve I
This current value is obtained by connecting an appropriate resistor from I
Figure 8-8.
Recommended I
Since the voltage at I
REF
CC
COMH
LSS
is the most positive voltage supply.
is a reference current source for segment current drivers I
is the ground path of the analog and panel current.
is the Common deselected level. It is internally regulated.
I
in which
For I
R1 = (Voltage at I
SEG
Rev 0.10
= (18 – 6) / 10uA
≈ 1.2M
= Contrast / 256 * I
REF
the contrast (0~255) is set by Set Contrast command (C1h); and
the scale factor (1 ~ 16) is set by Master Current Control command (C7h).
REF
= 10uA, V
Ω
P 23/56 Apr 2008
= 10uA
I
REF
REF
Figure 8-8 : I
≈ 10uA
pin is V
REF
CC
R1
– V
= 18V:
V
REF
CC
SS
SS
SEG
REF
– 6V, the value of resistor R1 can be found as below:
) / I
* scale factor *2
= 300uA at maximum contrast 255, I
Current Setting by Resistor Value
I
this pin = V
REF
REF
SSD1322
(voltage at
CC
– 6)
SEG
. The relationship between reference
REF
REF
pin to V
is set to around 10uA.
Solomon Systech
SS
as shown in