SSD1850 datasheet(26/56 Pages) ETC

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SSD1850/51 Series

Rev 1.2

01/2003

SOLOMON

COMMAND TABLE

Hex

Command

Description

00~0F

Set Lower

Column Address

Set the lower nibble of the column

address pointer for RAM access. The

pointer is reset to 0 after rest.

10~17

Set Upper

Column Address

Set the upper nibble of the column

address pointer for RAM access. The

pointer is reset to 0 after rest.

18~1F

Reserved

20~27

Set Internal

Regulator

Resistor Ratio

The internal regulator gain

(1+R2/R1)Vcon increases as R2R1R0

is increased from 000b to 111b. The

factor,

1+R2/R1, is given by:

R2R1R0 = 000: 2.3 (POR)

R2R1R0 = 001: 3.0

R2R1R0 = 010: 3.7

R2R1R0 = 011: 4.4

R2R1R0 = 100: 5.1

R2R1R0 = 101: 5.8

R2R1R0 = 110: 6.5

R2R1R0 = 111: 7.2

28~2F

Set Power Control

VC=0: turns OFF the internal voltage

booster (POR)

VC=1: turns ON the internal voltage

booster

VR=0: turns OFF the internal regulator

(POR)

VR=1: turns ON the internal regulator

VF=0: turns OFF the output op-amp

buffer (POR)

VF=1: turns ON the output op-amp

buffer

30~3F

Reserved

40~43

Set Display Start

Line

The next command specifies the row

address pointer (0-79) of the RAM data

to be displayed in COM0. This

command has no effect on ICONS. The

pointer is set to 0 after reset.

44~47

Set Display Offset

The next command specifies the

mapping of first display line (COM0) to

one of ROW0~79 (SSD1851) or

(COM0) to one of ROW0~63

(SSD1850). This command has no

effect on ICONS. COM0 is mapped to

ROW0 after reset.

48~4B

Set Multiplex

Ratio

The next command specifies the

number of lines, excluding ICONS, to

be displayed. With Icon is disabled

(POR), duties 1/16~1/80 (SSD1851) or

1/16~1/64 (SSD1850) could be

selected. With Icon enabled, the

available duty ratios are 1/17~ 1/81

(SSD1851) or 1/17~1/65 (SSD1850).

4C~4F

Set N-line

Inversion

The next command sets the n-line

inversion register from 3 to 33 lines to

reduce display crosstalk. Register

values from 00001b to 11111b are

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