SSD1789A Solomon Systech, SSD1789A Datasheet - Page 28

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

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D/C
0
1
0
1
0
1
1
0
0
0
1
1
0
0
0
0
D6 – D7
AE - AF
A6 - A7
D1 - D3
94 - 95
Hex
Solomon Systech
AB
20
81
A8
A9
D7 D6 D5 D4
X
Y
1
0
1
1
1
1
1
1
1
1
*
*
*
*
7
7
X
Y
0
0
0
1
0
0
0
0
0
1
*
*
*
*
6
6
X
X
X
Y
1
1
0
0
1
1
1
1
0
0
*
*
5
5
5
5
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X
X
X
Y
0
0
0
1
0
0
0
0
1
1
*
*
4
4
4
4
D3 D2 D1 D0
X
X
X
X
Y
1
0
0
0
0
1
1
1
0
0
*
3
3
3
3
3
X
X
X
Y
X
Y
0
0
0
1
1
0
0
1
1
0
2
2
2
2
2
2
X
X
X
Y
X
Y
X
1
0
0
1
1
0
0
1
0
1
1
1
1
1
1
1
X
X
X
Y
X
X
X
Y
X
X
X
1
0
1
0
1
0
0
0
0
0
0
0
0
0
0
0
Set Scroll Start
Set Power Control
Register
Set Contrast Level
& Internal
Regulator Resistor
Ratio
Increment /
Decrement of the
contrast set
Set Normal/Inverse
Display
Enter partial
Display
Exit partial Display
Set Display On/Off
Enter/Exit sleep
mode
Enable/disable
internal oscillator
Command
X
(1 block = 4 lines) of area scrolling.
Start block address = 000000b (POR)
X
X
X
(POR)
X
Select booster level
X
0 0
0 1
1 0
1 1
a) Select contrast level from 64 contrast steps
Contrast increases as X
000000b to 111111b. X
b) The internal regulator gain (1+R2/R1) VOUT increases
as Y
1+R2/R1, is given by:
Y
Y
Y
Y
Y
Y
Y
Y
X
by 1
X
decremented by 1
X
X
X
(POR)
Y
(POR)
Exit the “partial display mode” by executing the command
10101001b (POR)
X
X
X
X
X
0 1
1 0
5
0
0
1
1
3
2
2
2
2
2
2
2
2
0
0
0
0
7
7
0
0
0
0
1
Jul 2004
X
=0: turns off the reference voltage generator (POR)
=1: turns on the reference voltage generator
=0: turns off the internal regulator and voltage follower
=1: turns on the internal regulator and voltage follower
Y
Y
Y
Y
Y
Y
Y
Y
=0: The contrast set of voltage regulator is incremented
=1: The contrast set of voltage regulator is
=0: normal display (POR)
=1: inverse display
X
Y
=0: turns off LCD panel (POR)
=1: turns on LCD panel
=0: exit the sleep mode.
=1: enter sleep mode. (POR)
X
X
4
1
1
1
1
1
1
1
1
6
6
2
X
Y
Y
Y
Y
Y
Y
Y
Y
X
Y
2
0
Y
3
0
0
0
0
0
0
0
0
5
5
1
X
X
Y
Y
= 000: 6.49 (POR)
= 001: 7.03
= 010: 7.80
= 011: 8.91
= 100: 9.37
= 101: 10.53
= 110: 11.13
= 111: 12.02
4X
5X
6X
7X
2
4
4
X
0
X
Y
Boost level
is increased from 000b to 111b. The factor,
1
3
3
X
X
Y
0
2
2
X
Y
P 28/69 Rev 1.0
specify the start block address
1
1
X
Y
0
0
: Start COM Address = 0000000b
: End COM Address = 0000000b
Internal oscillator status
Description
5
5
X
ON
OFF (POR)
X
4
4
X
X
3
3
X
X
2
2
X
X
1
1
X
X
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0
SSD1789A Series
0
= 100000b (POR)
is increased from
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