EADIP203-4

Page 2

ELECTRONIC ASSEMBLY reserves

the right to change specifications

without prior notice. Printing and

typographical

errors

reserved.

PINOUT

TABEL OF COMMAND (SSD1803, IE=HIGH)

Instruction

C ode

Description

Execute

Time

(270kHz)

RE

Bit

DB

7

DB

6

DB

5

DB

4

DB

3

DB

2

DB

1

DB

0

Clear Display

*

0

00

0

0

0

0

0

0

1

Clears all display and returns the cursor to the

home position (Address 0).

1.53ms

Cursor At Home

0

0

00

0

0

0

0

0

1

*

Returns the Cursor to the home position (Address

0). Also returns the display being shifted to the

original position. DD RAM contents remain

unchanged.

1.53ms

Power Down

Mode

1

0

00

0

0

0

0

0

1

PD

Set Power down mode bit.

PD=0: powerdown mode disable

PD=1: powerdown mode enable

39µs

Entry Mode Set

0

0

0

0

0

0

0

0

1

I/D

S

Cursor moving direction (I/D=0: dec; I/D=1: inc)

shift enable bit (S=0: disable; S=1: enable shift)

39µs

1

0

0

0

0

0

0

0

1

1 BID

Segment bidirectional function

(BID=0: Seg1->Seg60; BID=1: Seg60->Seg1)

39µs

Display On/Off

Control

0

0

0

0

0

0

0

1

D

C

B

D=0: display off; D=1: display on

C=0: cursor off; C=1: cursor on

B=0: blink off; B=1: blink on

39µs

extended

Function Set

1

0

0

0

0

0

0

1

FW BW NW

FW=0: 5-dot font width; FW=1: 6-dot font width

BW=0: normal cursor; BW=1: inverting cursor

NW=0: 1- or 2-line (see N); NW=1: 4-line display

39µs

Cursor / Display

Shift

0

0

0

0

0

0

1

S/C R/L

*

*

Moves the Cursor or shifts the display

S/C=0: cursor Shift; S/C=1: display shift

R/L=0: shift to left; R/L=1: shift to right

39µs

Scroll Enable

1

0

0

0

0

0

1

39µs

Function Set

0

0

0

0

0

1

DL

N

sets interface data length (DL=0:4-bit; DL=1:8-bit)

number of display lines (N=0: 1-line; N=1: 2-line)

extension register (RE= 0/1)

scroll/shift (DH=0: dot scroll; DH=1: display shift)

reverse bit (REV=0:normal; REV=1:inverse display)

39µs

1

0

0

0

0

1

DL

N

RE BE LP

CG-/SEG-RAM blink (BE=0: disable; BE=1: enable)

LP=0: normal mode; LP=1: low power mode

39µs

CG RAM

Address Set

0

0

0

0

1

AC

Sets the CG RAM address. CG RAM data is sent

and received after this setting.

39µs

SEG RAM

Address Set

1

0

0

0

1

*

*

AC

Sets the SEG RAM address. SEG RAM data is sent

and received after this setting.

39µs

DD RAM

Address Set

0

0

01

AC

Sets the DD RAM address. DD RAM data is sent

and received after this setting.

39µs

Set Scroll

Quantity

1

0

01

*

SQ

Sets the quantity of horizontal dot scroll (DH=0)

39µs

Busy Flag /

Address Read

*

0

1BF

AC

Reads Busy flag (BF) indicating internal operation is

being performed and reads address counter

contents.

-

Write Data

*

1

0

Write Data

Writes data into internal RAM

(DD RAM / CG RAM / SEGRAM)

43µs

Read Data

*

1

1

Read Data

Reads data from internal RAM

(DD RAM / CG RAM / SEGRAM)

43µs

BACKLIGHT

Using the LED backlight requires a current source or external current-limiting resistor. Forward

voltage for yellow/green backlight is 3.9~4.2V and for white LED backlight is 3.0~3.6V. Please take

care of derating for T

Note: Do never connect backlight directly to 5V; this may destroy backlight immediately !

Pin Symbo

Level Function

Pin

Symbo

Level Function

1

VSS

L

Power Supply 0V (GND)

10

D3

H / L

Display Data

2

VDD

H

Power Supply +3.3V

11

D4 (D0)

H / L

Display Data

3

VEE

-

Contrast adjustment, input

12

D5 (D1)

H / L

Display Data

4

RS (CS)

H / L

H=Data, L=Command

13

D6 (D2)

H / L

Display Data

5

R/W

(SID)

H / L

H=Read, L=Write

14

D7 (D3)

H / L

Display Data, MSB

6

E (SCLK)

H

Enable (falling edge)

15

-

-

NC (see EA DIP122-5N)

7

D0 (SOD)

H / L

Display Data, LSB

16

RES

L

Reset (internal Pullup 10k)

8

D1

H / L

Display Data

17

A

-

LED B/L+ Resistor required

9

D2

H / L

Display Data

18

C

-

LED B/L-