
SOLOMON
SSD1820A/21
19
REV 1.4
01/03
58~63
Reserved
Reserved
64~67
0
1
1
0
0
1
B1
B0
Set DC-DC Conveter Factor
Sets the DC-DC multiplying factor from 2X to 6X B1B0:
00: 2X/3X (POR, 2X or 3X multiplying depended on the
DC-DC conveter configuration)
01: 4X
10: 5X (for SSD1820A)
11: 5X (for SSD1820A); 6X (for SSD1821)
68~80
Reserved
Reserved
81
1
x
0
x
0
C5
0
C4
0
C3
0
C2
0
C1
1
C0
Set Contrast Control Regis-
ter
The next command sets one of the 64 contrast levels.
The darkness increase as the contrast level increase.
The level is set to 32 after POR.
82~9F
Reserved
Reserved
A0~A1
1
0
1
0
0
0
0
S0
Set Segment Re-map
S0=0: column address 00H is mapped to SEG0 (POR)
S0=1: column address 7FH is mapped to SEG0
A2~A3
1
0
1
0
0
0
1
C0
Set Icon Enable
C0=0: Disable icon row (Mux = 16 to 64/80, POR)
C0=1: Enable icon row (Mux = 17 to 65/81)
A4~A5
1
0
1
0
0
1
0
E0
Set Entire Display On/Off
E0=0: Normal display (dispaly according to RAM con-
tents, POR)
E0=1: All pixels are ON regardless of the RAM contents
*Note: This command will override the effect of “Set
Normal/Reverse Display”
A6~A7
1
0
1
0
0
1
1
R0
Set Normal/Reverse Display
R0=0: Normal display (dispaly according to RAM con-
tents, POR)
R0=1: Reverse display (ON and OFF pixels are
inverted)
*Note: This command will not affect the display of the
icon lines
A8
Reserved
Reserved
A9
1
0
1
0
1
0
0
1
Set Power Save Mode
Enter Sleep mode
AA
Reserved
Reserved
AB
1
0
1
0
1
0
1
1
Start Internal Oscillator
Oscillator is OFF after reset, until this command is
issued. This command is required even if external oscil-
lator is used.
AE~AF
1
0
1
0
1
1
1
D0
Set Display On/Off
D0=0: Display OFF (POR)
D0=1: Display ON
B0~BF
1
0
1
1
P3
P2
P1
P0
Set Page Address
Set GDDRAM page address (0~10) using P3P2P1P0
for RAM access. The page address is sets to 0 after
reset.
C0~CF
1
1
0
0
S0
x
x
x
Set
COM
Output
Scan
Direction
S0=0: Normal mode (POR)
S0=1: Remapped mode. COM0 to COM[N-1] becomes
COM[N-1] to COM0 when the duty is set to N.
See Figure 5/6 as an example for N equals to
64/80.
*Note: This command will not affect the display of the
icon lines
D0~E0
Reserved
Reserved
E1
1
1
1
0
0
0
0
1
Exit Power-save Mode
DC-DC converter, regulator and divider status before
entering the power-save mode is restored. At POR,
Power-save Mode is released.
E2
1
1
1
0
0
0
1
0
Software Reset
Initialize some internal registers
E3
Reserved
Reserved
E4
1
1
1
0
0
1
0
0
Exit N-line Inversion
The frame will be inverted once per frame
E5~E7
Reserved
Reserved