sh66p51 SinoWealth Micro-Electronics Corp. Ltd, sh66p51 Datasheet - Page 28

• Manufacturer Part Number: sh66p51
• Description: Otp 2k 4-bit Micro-controller With Lcd Driver
• Manufacturer: SinoWealth Micro-Electronics Corp. Ltd

LCD Power
* When LCD is off, COM & SEG output GND in LCD application.
SH66P51 builds in a voltage regulator and it can generate a stable voltage for LCD when V
* The following diagram is the application diagram for LCD power circuit
Address
$07
Bit 3
X
X
-
LCDON
LCDON
Bit 2
0
1
LCD power
Regulator
Bit 1
Voltage
supply
circuit
X
X
-
Figure 7. LCD Power Circuit Diagram
Bit 0
X
X
-
V
CUP1
CUP2
GND
VP1 = 3/2 VP2
VP3 = 1/2 VP2
VSUB
DD
28
R/W
R/W
0.1uF
VP2 = 1.8-2.1 V
= 2.0 - 3.6V
Bit2: Set LCD display ON
LCD OFF
LCD ON
0.1uF
0.1uF
0.1uF
Remarks
DD
between 2.0V and 3.6V.
0.1uF
SH66P51