Post by thread:Interfacing a static drive LCD, how?

It's nice to send this message after so long! I would appreciate any kind of help from piclisters with part of my current project. Which is the easiest way to interface a SP521 (3 1/2 segs.(13mm) 7 Segment Digits w/LOBAT 51mm x 30mm) Seiko static drive LCD display (Picture at: http://www.avnet.co.nz/seiko/graphics/sp521.gif ) to a 16F84 (for visual data output, of course) using minimun program space for the routine. (I'm willing to know what part do I need in between this 2 components.) As far as I know the backplane pin (common to all segments) is driven with a 50% duty cycle square wave at around 32KHz to 128KHz. Each segment pin is also driven with a squarewave derived from the backplane, but for OFF segments the squarewave is unmodified the same as the backplane, and for ON segments the squarewave is INVERTED with respect to the backplane. Thanks a lot! P.D: Unfortunately I suffer a lack of knowledge in the analog domain. I would like to get to know in depht many issues discussed in the list that I only understand vaguely (such as pull-up resistors, open-drains, clamp diodes, open collectors, decoupling capacitors, high impedance lines, etc). Can anybody point me in the right direction (books, URLs,etc)? ----------------------------- *** PicProg *** The non-commercial PIC programmer website. http://virtuaweb.com/picprog

It's nice to send this message after so long! I would appreciate any kind of help from piclisters concerning part of my current project. Which would be the easiest way to interface a SP521 (3 1/2 segs.(13mm) 7 Segment Digits w/LOBAT 51mm x 30mm) Seiko static drive LCD display (Picture at: http://www.avnet.co.nz/seiko/graphics/sp521.gif ) to a 16F84 (for visual data output, of course) using minimun program space for the routine. (I'm willing to know what part do I need in between this 2 components.) As far as I know the backplane pin (common to all segments) is driven with a 50% duty cycle square wave at around 32KHz to 128KHz. Each segment pin is also driven with a squarewave derived from the backplane, but for OFF segments the squarewave is unmodified the same as the backplane, and for ON segments the squarewave is INVERTED with respect to the backplane. A Huge Thank You! P.D: Unfortunately I suffer from a lack of knowledge in the analog domain. I would like to get to know in depht many issues discussed in the list that I only understand vaguely (such as pull-up resistors, open-drains, clamp diodes, open collectors, decoupling capacitors, high impedance lines, etc). Can anybody point me in the right direction (books, URLs,etc)? ----------------------------- *** PicProg *** The non-commercial PIC programmer website. http://virtuaweb.com/picprog