S6B33A2 Datasheet, PDF (32/67 Pages) Samsung semiconductor – 128 RGB Segment & 129 Common Driver For 4,096 Color STN LCD

S6B33A2 PRELIMINARY VER 1.3 128 RGB SEGMENT & 129 COMMON DRIVER FOR 4,096 COLOR STN LCD
DC-DC Select and power supply for V1 Op-Amp.
Even if VIN45 is connected to VOUT45 or VIN1, a setup by software must be able to be performed.
Power supply for V1 Op.Amp. is decided by Hardware setting and Software setting.
The example of usage is shown below.
Figure28. Example : Hardware Setting
Software Setting
: VIN45 connected to VOUT45
: Power supply for V1 Op.Amp. uses VIN1 ( not VOUT45).
Hardware Setting
VIN45
Software Setting
VOUT45
VSS
C11+
C11-
C12+
C12-
VIN1
1st
Booster
Circuit
Reference
voltage
generator
&
Temperature
Compensation
Control Circuit
EV_256
+
V1
-
R1
R1
V1 generation circuit
Hardware setting : VIN45 connected to (1) VIN1 (when 1’st boosting is not used)
(2) VOUT45 (when 1’st boosting is used)
Software setting : DC-DC Select(20H) - DC(1), DC(2)
Set value “00” Power supply for V1 Op.Amp. uses VIN1 directly.
Set value “01” or “10” Power supply for V1 Op.Amp. uses VOUT45.
28