SSD1789A Solomon Systech, SSD1789A Datasheet - Page 21

• Manufacturer Part Number: SSD1789A
• Description: CSTN LCD Driver
• Manufacturer: Solomon Systech

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7.2
This block is integrated into the Microprocessor Interface Logic which includes Power On Reset circuitry and the hardware
reset pin, RES . Both of these having the same reset function. Once the RES pin receives a negative reset pulse, all
internal circuitry will start to initialize. The minimum pulse width for completing the reset sequence is 10us. The status of
the chip after reset is given by:
SSD1789A Series Rev 1.0
Reset Circuit
1.
2.
3.
4.
5.
6.
7.
8.
9.
10. Contrast level:
11. Internal Regulator gain:
12. Average temperature gradient:
13. Partial display mode:
14. Area Scroll set
15. Scroll start set
16. Data Scan Direction
17. Start Page Address set:
18. End Page Address set:
19. Start Column address set:
20. End Column address set:
21. Select PWM/FRC
When
Display ON/OFF:
Normal/Inverse Display:
COM Scan Direction:
Internal Oscillator:
Reference Voltage Generation Circuit:
Voltage regulator and Voltage Follower:
Booster:
Bias ratio:
Multiplex ratio:
Start COM address:
End COM address:
Start block address:
Normal/inverse display of page address:
Normal/inverse display of column address:
Address-scan direction:
RGB arrangement:
Gray-scale setup:
RES
Top block address:
Bottom block address:
Number of specified block:
Area scroll mode:
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input is low, the chip is initialized to the following:
P 21/69 Jul 2004
ROW0-ROW131 = COM0-COM131
0
Normal
Normal
RGB
4K color
Display is OFF
Normal Display
Disable
Disable
Disable
Disable
1/9
132 Mux
20h
6.49
-0.25%/
Disable
0
0
0
0
Whole screen scroll mode
0
Column direction
0
0
0
0
5-bit PWM + 1-bit FRC mode
o
C
Solomon Systech
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