SSD1801Z datasheet(41/42 Pages) ETC

41 / 42 page

SOLOMON

Rev 1

01/2003

SSD1801 Series

Recommended INITIALIZING of SSD1801

Figure 26 - Recommended INITIALIZING of SSD1801

DVDD/AVCC-DVSS/AVSS Power On

End of initialization

Send reset pulse to the RES pin.

(Recommended minimum reset pulse width is 10ms)

Waiting for 10usec

Command Input

1. Function set (00010X2X1X0)

2. Contrast control register setup

3. Power save (power save off; OSC on)

4. Power control (turns on the internal regulator and turns on the

internal divider)

Command Input

5. RAM address set

Data Input

6. Data writing (RAM clear)

(DDRAM=20h, CG/ICONRAM=00h)

Command Input

7. Display control (turns on the display) (There is an auto mask

off period ~ 260ms)

NOTE:

At instructions 1-6, the minimum clock cycle

time is 650ns for PPI. For details, pls refer

to the SSD1801 datasheet “AC

Characteristics”.

At 5 and 6, the internal RAM should be

cleared.

To clear DDRAM, set address at 00h (first

DDRAM) and then write 20h (space

character code) 64times.

To clear CGRAM, set address at 40h (first

CGRAM) and then write 00h (null data) 64

times

To clear ICONRAM, set CONRAM address

at 00h (first ICONRAM) and then write 00h

(null data) 16 times

No delay between each Command/Data

input under ideal timing situation (No time

shift in any signals, refer to page 32 for

details )

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