SOLOMON DVM1821Z-A0, DVK1821Z-A0 Datasheet

SOLOMON SYSTECH

SEMICONDUCTOR TECHNICAL DATA

Rev 0.1

08/2000

Copyright © 2000 SOLOMON Systech Limited

Product Information

SSD1821Z Development Kit

DVK1821Z-A0 is a demonstration of SSD1821Z working on a (128 X 80 + 1 icon line)
panel. It is intended to help users expedite their design-in of SOLOMON LCD driver.

PACKAGE CONTENTS

DVK1821Z-A0 consists of the following:

1) LCD Module (128 X 80 + 1 icon line) (DVM1821Z-A0)

2) LCD Drawing (optional)

3) Programmed 8051 MCU Board (EVM89C52-A0)

4) 8051 MCU Board Schematics (EVM89C52-A0)

5) Demo Program in C Language (PRG1821Z-A0)

SYSTEM REQUIREMENT

DVK1821Z-A0 is good enough to serve as a standalone demo. 2 X AA 1.5V battery
is required for normal operation. For engineering evaluation on the LCD driver and/or
LCD panel, a 8051 Incircuit emulator (ICE) is required. The one Solomon Systech is
using is EMMIT 8051 ICE from Syber Electronics Co Ltd. User can get its information
from the email: [e-mail]

LCD MODULE

Table 1 DVM1821Z-A0 pin assignment

Pin Number

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24

LCD Module

VDD

RES

PS1

D/C

R/W

CS1

VSS

D0

D1

D2

D3

D4

D5

D6

D7

E

NC

VSS

NC

NC

NC

NC

NC

NC

8051 MCU
Board

VOUT

PA-04

PA-05

PA-01

PA-07

PA-06

GND

PB-00

PB-01

PB-02

PB-03

PB-04

PB-05

PB-06

PB-07

PA-00

VOUT

GND

+9V

P34

P35

P36

P37

NC

DVK1821Z-A0

Figure 1 DVM1821Z-A0 outlook

The LCD module has been configured as follows

1) size: 128 X 80 + 1 icon line

2) COG Package

3) 6X DC-DC converter to generate VEE

4) Internal feedback resistor which is software programmable is used to
generate VL6.

5) Parallel interface

6) 24 pins single inline (SIL) header is used to connect 8051 MCU Board to LCD
Module. Please refer to Table 1 for pin assignment.

7) DIP SW 1-9 are to control the DC-DC conveter. SW 10 is the PS0 setting,
turn off in parallel mode. SW 11 & 12 are for internal testing only, please turn
off for normal use.

ORDERING INFORMATION

Item Ordering Part Number
SSD1821Z Develop-

ment Kit

DVK1821Z-A0

SSD1821Z Develop­ment Module

DVM1821Z-A0

2

SOLOMON

DVK1821Z-A0

Rev 0.1

08/2000

8051 MCU BOARD

The 8051 MCU Board is powered up by 2 X AA 1.5V battery. A 2X DC con­verter (ICL7660) is used to generate 4.8V to supply 8051 MCU. This voltage is
also regulated by LM317 to generate VOUT (adjustable from 1.8V to 3.5V)
which in turn powers up solomon LCD driver. All logic output from 8051 are
down-converted from 4.8V to VOUT through 74HC4050 non-inverting buffer.
User can change VOUT by tuning T1 (1K trimmer).The MCU board is configured
to run at a speed of 4MHz. 4 dummy keys are reserved for developing user­interactive application such as tuning contrast.

Figure 2 EVM89C52-A0 outlook

Figure 3 DVM1821Z-A0 schematics

3

SOLOMON

DVK1821Z-A0 Rev 0.1

08/2000

PROGRAMMING NOTE

/*__________________________________________________________________________*/
/* Device: DVK1821Z-A0 */
/* Descp: 1821 Demo in parallel interface */
/* LCM: 128x81 */
/* Structure: A) Hardware Interface */
/* B) Command Table per device */
/* C) Global Variables Definition */
/* D) Hardcoded Graphics */
/* E) Function Prototypes */
/* F) Main Function */
/* */
/* Remark: PS0 is hardwire on DVM1821Z-A0 by DIP SW, PS1 is programable pin*/
/*__________________________________________________________________________*/
#include "reg51.h"
#define controlport P0
#define dataport P1

/****************************************************
* A) HardWare Interface *
* *
* PORT A 7 6 5 4 3 2 1 0 *
* RW CS PS1 RES -- -- DC E *
* *
* E and PS may be tied high *
* *
* PORT B 7 6 5 4 3 2 1 0 *
* D7 D6 D5 D4 D3 D2 D1 D0 *
* *
****************************************************/

/****************************************************
* B) Command Table per device *
****************************************************/
#define DisplayOff 0xAE
#define DisplayOn 0xAF
#define DisplayStart 0x40
#define PageAddr 0xB0
#define ColAddrHi 0x10
#define ColAddrLo 0x00
#define SegRemapOff 0xA0
#define SegRemapOn 0xA1
#define NormalDisp 0xA6
#define ReverseDisp 0xA7
#define ExitEntireD 0xA4
#define EntEntireD 0xA5
#define EnterRMW 0xE0
#define ExitRMW 0xEE
#define SWRest 0xE2
#define ComRemapOff 0xC0
#define ComRemapOn 0xC8
#define PwrCtrlReg 0x28
#define OPampBuffer 0x01
#define IntReg 0x02
#define IntVolBstr 0x04
#define IntRegRatio 0x20
#define ContCtrlReg 0x81

#define CmdMuxRatio 0x48
#define CmdBiasRatio 0x50
#define DispOffset 0x44
#define IconModeOn 0xA3
#define IconModeOff 0xA2

#define NlineInver 0x4C
#define DCDCconver 0x64
#define PowersavStandby 0xA8
#define PowersavSleep 0xA9
#define PowersavOff 0xE1
#define InterOsc 0xAB

#define Device SSD1821 /* device under demo */