Post by thread:Graphical LCD

Hi all, I have bought a graphical dot-matrix LCD display (graphical in the sense each dot can be controlled separately). The only little thing I lack is a description of the interface. I wonder if there is any similar standard like the Hitachi HD44780 for alphanumeric displays. All the info I have gathered so far: The display module is designated TM10032 - 100 x 32 dots, manufacturer unknown. It has eighteen pins: Vss, Vcc, Vo, A0, R/W, E1, E2, NC, DB0..DB7, LED-, LED+. It is controlled by two NJU6450 chips, made by JRC - Japanese Radio Company (now NJR - New Japanese Radio). I have visited their web page, but they do not have any info online. I have requested the literature in paper form, but so far received no s-mail, no fax, no e-mail. As I am running short of time, I would appreciate any advice. A compatible chip documented on the web would be a lifesaver, but any help is appreciated. TIA. (Needless to say the whole instrument is PIC16C74 based.) Josef

Hi, > description of the interface. I wonder if there is any similar standard like > the Hitachi HD44780 for alphanumeric displays. All the info I have gathered > > It is controlled by two NJU6450 chips, made by JRC - Japanese Radio Company The NJU6428 is software compatible with a Hitachi HD44780 so there may be a Hitachi equibvalent for your controller as well. An EPSON SED1520 controller is capable of driving a 128 x 32 display so they may also have a compatible. Regret no data sheets on those ICs. Cheers -- Kalle Pihlajasaari spam_OUTkalleTakeThisOuTip.co.za http://www.ip.co.za/ip Interface Products P O Box 15775, DOORNFONTEIN, 2028, South Africa + 27 (11) 402-7750 Fax: 402-7751 http://www.ip.co.za/people/kalle DonTronics, Silicon Studio and Wirz Electronics uP Product Dealer

>Hi, > >> description of the interface. I wonder if there is any similar standard like >> the Hitachi HD44780 for alphanumeric displays. All the info I have gathered >> >> It is controlled by two NJU6450 chips, made by JRC - Japanese Radio Company > >The NJU6428 is software compatible with a Hitachi HD44780 so there may >be a Hitachi equibvalent for your controller as well. > >An EPSON SED1520 controller is capable of driving a 128 x 32 display >so they may also have a compatible. > >Regret no data sheets on those ICs. > The EPSON SED1330/1335 is capable of controlling a display up to 640x256, the data sheet is avaiable at http://www.hantronix.com and the part is avaiable at http://www.digikey.com I hope this help Octavio ====================================================== Octavio Nogueira - e-mail: .....nogueiraKILLspam@spam@mandic.com.br http://www.geocities.com/~oct_nogueira "ProPic" Production PIC Programmer Windows under US$20 ======================================================

Josef, I have the data sheet in paper form but no scanner, so codes listed below:- A0 RD WR d7 D6 D5 D4 D3 D2 D1 D0 Display On/Off 0 1 0 1 0 1 0 1 1 1 D - D=0 for On Display startline 0 1 0 1 1 0 A4 A3 A2 A1 A0 (for smooth scroll) Page Address Set 0 1 0 1 0 1 1 1 0 Page (0-3) Column Addr Set 0 1 0 0 Column Address (0 - 79) Status Read 0 0 1 BsyAdcOn Rst0 0 0 0 - Bsy = 1 for busy Adc = 1 clockwise On/off = 0 on Reset = 1 reset Write Display Data 1 1 0 -------Data----------- Read Display Data 1 1 0 -------Data----------- ADC selection 0 1 0 1 0 1 0 0 0 0 C - C=0 clockwise O/P 1 = CCW O/P Static drive on/off0 1 0 1 0 1 0 0 1 0 S - S=1 static drive 0 Dynamic drive Duty Ratio select 0 1 0 1 0 1 0 1 0 0 R - R=1 1/32 duty 0 1/64 duty Read Modify Write 0 1 0 1 1 1 0 0 0 0 0 (incriment column address only on a write, not on a read) End 0 1 0 1 1 1 0 1 1 1 0 (end read modify write) Reset 0 1 0 1 1 1 0 0 0 1 0 Power save 0 1 0 1 0 1 0 1 1 1 0 (dual command) 0 1 0 1 0 1 0 0 1 0 1 Hope this can get you started, Just shout for more! Steve Lawther http://ourworld.compuserve.com/homepages/steve_lawther/ucindex.htm ______________________________ Reply Separator _________________________________ Subject: Graphical LCD Author: MIME:euroclassKILLspamPHA.PVTNET.CZ at INTERNET-HUSKY Date: 29/10/97 11:05 Hi all, I have bought a graphical dot-matrix LCD display (graphical in the sense each dot can be controlled separately). The only little thing I lack is a description of the interface. I wonder if there is any similar standard like the Hitachi HD44780 for alphanumeric displays. All the info I have gathered so far: The display module is designated TM10032 - 100 x 32 dots, manufacturer unknown. It has eighteen pins: Vss, Vcc, Vo, A0, R/W, E1, E2, NC, DB0..DB7, LED-, LED+. It is controlled by two NJU6450 chips, made by JRC - Japanese Radio Company (now NJR - New Japanese Radio). I have visited their web page, but they do not have any info online. I have requested the literature in paper form, but so far received no s-mail, no fax, no e-mail. As I am running short of time, I would appreciate any advice. A compatible chip documented on the web would be a lifesaver, but any help is appreciated. TIA. (Needless to say the whole instrument is PIC16C74 based.) Josef