SSD1325 Solomon Systech, SSD1325 Datasheet - Page 23

• Manufacturer Part Number: SSD1325
• Description: OLED/PLED Driver
• Manufacturer: Solomon Systech

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COMMAND DESCRIPTIONS
Set Column Address
This command specifies column start address and end address of the display data RAM. This command
also sets the column address pointer to column start address.
Set Row Address
This command specifies row start address and end address of the display data RAM. This command also
sets the row address pointer to row start address.
Set Contrast Control Register
This command is to set Contrast Setting of the display. The chip has 128 contrast steps from 00H to 7FH.
The segment output current increases linearly with the increase of contrast step. See Figure 6 below.
Set Current Range
This command is used to select quarter range or half range or full range current mode. With the same
contrast level, quarter range mode will give a quarter of the current output of the full range mode. Similar
to half range current mode, it will give a half of the current output of the full range mode. See Figure 6. In
POR, quarter range current mode is default.
Set Re-map
This command changes the mapping between the display data column address and segment driver, row
address and common driver. It allows flexibility in layout during OLED module assembly. See the Re-map
setting below:
Column Address Re-map
If column address re-map is set, Col 0-63 map to SEG127-0, regardless of start column and end column
commands.
Nibble Re-map
If nibble re-map is set, the two nibbles of the data bus for RAM access are re-mapped, such that
(D7, D6, D5, D4, D3, D2, D1, D0) acts like (D3, D2, D1, D0, D7, D6, D5, D4)
SSD1325
Rev 1.2
350
300
250
200
150
100
50
0
00
Full current range
P 23/53 Aug 2005
Segment current vs Contrast setting
0F
Figure 6 - Segment current vs Contrast setting
1F
2F
Half current range
Contrast Setting
3F
4F
Quarter current range
5F
6F
7F
Solomon Systech