ST7571 View Datasheet(PDF) - Sitronix Technology Co., Ltd.
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ST7571 Datasheet PDF : 76 Pages
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ST7571
9.1.15 Power Control
This instruction selects one of eight power circuit functions by using 3-bit register. An external power supply and part of
internal power supply functions can be used simultaneously.
A0
R/W
DB7
DB6
DB5
DB4
DB3
DB2
DB1
DB0
0
0
0
0
1
0
1
VC
VR
VF
VC
VR
VF
0
1
0
1
0
1
Internal Power Supply Circuits
Internal voltage converter circuit
Internal voltage regulator circuit
Internal voltage follower circuit
Status
OFF
ON
OFF
ON
OFF
ON
9.1.16 Select Regulator Resister
This instruction selects resistance ratio of the internal regulator resistors. Refer to the voltage regulator circuits in power
supply circuit section.
A0
R/W
DB7
DB6
DB5
DB4
DB3
DB2
DB1
DB0
0
0
0
0
1
0
0
R2
R1
R0
R2
R1
R0
1+ (Rb / Ra)
0
0
0
2.3
0
0
1
3.0
0
1
0
3.7
0
1
1
4.4
1
0
0
5.1
1
0
1
5.8
1
1
0
6.5
1
1
1
7.2
Ver 1.5a
41/76
2009/7/21
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