SSD1815 datasheet(15/35 Pages) ETC

15 / 35 page

SOLOMON

SSD1815

REV 1.5

03/2000

EXTENDED COMMAND TABLE

Note: Patterns other than that given in Command Table and Extended Command Table are prohibited to enter to the chip

as a command. Otherwise, unexpected result will occurs.

Bit Pattern

Read Command

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

Comment

D7D6D5D4D3D2D1D0

(Data Read Back from the

driver)

Status Register Read

D7=0: indicates an internal operation is completed.

D7=1: indicates an internal operation is in progress.

D6=0: indicates reverse segment mapping with column address

D6=1: indicates normal segment mapping with column address

D5=0: indicates the display is ON

D5=1: indicates the display is OFF

D4=0: initialization is not in progress

D4=1: initialization is in progress after RES or software reset

D3D2D1D0 = 1010, these 4-bit is fixed to 1010 which could be used

to identify as Solomon Systech Device.

Bit Pattern

Command

Comment

10101000

00X5X4X3X2X1X0

X5X4X3X2X1X0: Set Multiplex Ratio

To select multiplex ratio N from 2 to 65 [Included Icon Line].

N = X5X4X3X2X1X0 + 2, eg. N = 111111b + 2 = 65 (POR)

10101001

X7X6X5X4X3X2X1X0

X1X0: Set Bias Ratio

X4X3X2: Set TC Value

X7X6X5: Modify Osc. Freq.

X1X0 = 00: 1/8, 1/6

X1X0 = 01: 1/6, 1/5

X1X0 = 10: 1/9, 1/7 (POR)

X1X0 = 11: Prohibited

X4X3X2 = 000: -0.01%/C (TC0, POR)

X4X3X2 = 010: -0.10%/C (TC2)

X4X3X2 = 100: -0.18%/C (TC4)

X4X3X2 = 111: -0.25%/C (TC7)

X4X3X2 = 001, 011, 101, 110: Reserved

Increase the value of X7X6X5 will increase the oscillator frequency

and vice versa. This command is not recommended to be used.

X7X6X5 = 011(POR)

1010101X0

X0: Set 1/4 Bias Ratio

X0 = 0: use Normal Setting (POR)

X0 = 1: fixed at 1/4 Bias

11010010

0X6X500010

X6X5: Set Total Frame Phases

The On/Off of the Static Icon is given by 3 phases/1 phase overlap-

ping of the M and MSTAT signals. This command set how many

phases of dividing the M/MSTAT signals for each frame.

The more the phases, the less the overlapping and thus the lower

the effective driving voltage.

X6X5 = 00: 3 phases

X6X5 = 01: 5 phases

X6X5 = 10: 7 phases (POR)

X6X5 = 11: 16 phases

11010011

00X5X4X3X2X1X0

X5X4X3X2X1X0: Set Display Offset

(for mux ratio has been

set less than 64 only)

After POR, X5X4X3X2X1X0 = 0

After setting mux ratio less than 64, data will be displayed at Center

of matrix. See Table 1.

To move display towards Row 0 by L, X5X4X3X2X1X0 = L

To move display away from Row 0 by L, X5X4X3X2X1X0 = 64-L

Note: max. value of L = (64 - display mux)/2

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