SSD1815 datasheet(14/35 Pages) ETC

14 / 35 page

SSD1815

REV 1.5

03/2000

SOLOMON

COMMAND TABLE

Bit Pattern

Write Command

(D/C=0, R/W(WR)=0, E(RD)=1)

Comment

0000X3X2X1X0

Set Lower Column Address

Set the lower nibble of the colume address register using

X3X2X1X0 as data bits. The initial display line register is reset to

0000b during POR.

0001X3X2X1X0

Set Higher Column Address

Set the higher nibble of the colume address register using

X3X2X1X0 as data bits. The initial display line register is reset to

0000b during POR.

00100X2X1X0

Set Internal Regulator Resistor Ratio

Internal regulator gain increases as X2X1X0 increased from 000b

to 111b. At POR, X2X1X0 = 100b.

00101X2X1X0

Set Power Control Register

X0=0: turns off the output op-amp buffer (POR)

X0=1: turns on the output op-amp buffer

X1=0: turns off the internal regulator (POR)

X1=1: turns on the internal regulator

X2=0: turns off the internal voltage booster (POR)

X2=1: turns on the internal voltage booster

01X5X4X3X2X1X0

Set Display Start Line

Set display RAM display start line register from 0-63 using

X5X4X3X2X1X0.

Display start line register is reset to 000000 during POR.

10000001

* * X5X4X3X2X1X0

Set Contrast Control Register

Set Contrast level from 64 contrast steps. Contrast increases (VL6

decreases) as X5X4X3X2X1X0 is increased.

X5X4X3X2X1X0 = 100000b (POR)

1010000X0

Set Segment Re-map

X0=0: column address 00h is mapped to SEG0 (POR)

X0=1: column address 83h is mapped to SEG0

Refer to Figure 5 for example.

1010001X0

Set LCD Bias

X0=0: 1/9 bias (POR)

X0=1: 1/7 bias

For setting bias ratio to 1/4, 1/5, 1/6 or 1/8, see Extended Com-

mand Table.

1010010X0

Set Entire Display On/Off

X0=0: normal display (POR)

X0=1: entire display on

1010011X0

Set Normal/Reverse Display

X0=0: normal display (POR)

X0=1: reverse display

1010111X0

Set Display On/Off

X0=0: turns off LCD panel (POR)

X0=1: turns on LCD panel

1011X3X2X1X0

Set Page Address

Set GDDRAM Page Address (0-8) using X3X2X1X0

1100X3 * * *

Set COM Output Scan Direction

X3=0: normal mode (POR)

X3=1: remapped mode, COM0 to COM[N-1] becomes COM[N-1]

to COM0 when Multiplex ratio is equal to N. See Figure 5

as an example for N equal to 64.

11100000

Set Read-Modify-Write Mode

Read-modify-write mode will be entered in which the column

address will not be incremented during display data read. At POR,

Read-modify-write mode is turned OFF.

11100010

Software Reset

Initialize the internal status register.

11101110

Set End of Read-Modify-Write Mode

Exit Read-modify-write mode. Column address before entering the

mode will be restored. At POR, Read-modify-write mode is OFF.

1010110X0

* * * * * * X1X0

Set Indicator On/Off

Indicator Display Mode,

This second byte command is required

ONLY when “Set Indicator On” com-

mand is sent.

X0 = 0: indicator off (POR, no need of second command byte)

X0 = 1: indicator on (second command byte required)

X1X0 = 00: indicator off

X1X0 = 01: indicator on and blinking at ~1 second interval

X1X0 = 10: indicator on and blinking at ~1/2 second interval

X1X0 = 11: indicator on constantly

11100011

NOP

Command for No Operation

11110000

Test Mode Reset

Reserved for IC testing. Do NOT use.

1111 * * * *

Set Test Mode

Reserved for IC testing. Do NOT use.

* * * * * * * *

Set Power Save Mode

Standby or sleep mode will be entered with compound commands

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