----- Original Message ----- From: "Ulf Jonsson" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Monday, May 12, 2008 7:45 AM Subject: [softrock40] Si570 code by G4OEP
>I was looking for some information on the Si570 when I stumbled over > G4OEP's code that translate a binary frequency word into the required > control bytes for the Si570. He have the source code available on his > pages. > > Has anyone tried this approach? > > http://g4oep.atspace.com/si570/si570.htm I'd use a 16LF88 powered from 3.3V instead of the 16F627 that he uses, the I2C level conversion won't then be required. The Powertip LCDs will operate at 3.3V, although a negative contrast input would be required. This could be derived with a diode charge pump driven from a spare output on the 16LF88. I've used the standard 16F88 at 2.85V, way outside the spec, but it operated reliably, until I could get some of the LF ones. I had to buy them direct from Microchip, they aren't available in the UK in small quantities. Leon -- Leon Heller Amateur radio call-sign G1HSM Yaesu FT-817ND and FT-857D transceivers Suzuki SV1000S motorcycle [EMAIL PROTECTED] http://www.geocities.com/leon_heller
