ST7571 Sitronix Technology, ST7571 Datasheet - Page 43

• Manufacturer Part Number: ST7571
• Description: 4 Gray Scale Dot Matrix LCD Controller/Driver
• Manufacturer: Sitronix Technology

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ST7571
9.1.19 Set COM Scan Direction
This instruction selects the COM output scanning direction and determines the LCD driver output status.
SHL = 0: normal direction (COM0 ~ COM127)
SHL = 1: reverse direction (COM127 ~ COM0)
9.1.20 Set SEG Scan Direction
This instruction changes the relationship between the DDRAM column address and the segment driver. The SEG scan
direction can be reversed by this instruction. This feature makes IC layout more flexible for LCD module assembly.
ADC = 0: normal direction (SEG0 ~ SEG127)
ADC = 1: reverse direction (SEG127 ~ SEG0)
9.1.21 Oscillator ON Start
This instruction enables the built-in oscillator circuit.
9.1.22 & 9.1.23 Power Save
ST7571 enters Power-Save mode and reduces the power consumption to the static power consumption. It returns to the
normal operation mode by the Release Power Save Mode instruction.
Set Power Save Mode
P = 0: normal mode
P = 1: power-save mode (sleep mode)
Release Power Save Mode
Ver 1.5a
A0
A0
A0
A0
A0
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
0
0
0
0
0
DB7
DB7
DB7
DB7
DB7
1
1
1
1
1
Fig. 25 Internal Procedure of Power Save
DB6
DB6
DB6
DB6
DB6
1
0
0
0
1
DB5
DB5
DB5
DB5
DB5
0
1
1
1
1
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DB4
DB4
DB4
DB4
DB4
0
0
0
0
0
DB3
SHL
DB3
DB3
DB3
DB3
0
1
1
0
DB2
DB2
DB2
DB2
DB2
0
0
0
0
x
DB1
DB1
DB1
DB1
DB1
0
1
0
0
x
2009/7/21
ADC
DB0
DB0
DB0
DB0
DB0
P
1
1
x