Btw: The reason I say 9 (maybe 8) instructions below is because my experiments with the SPI module indicated that it can not do back-to-back operations every eight cycles as one would hope it could (and should?) do. Bob Ammerman RAm Systems ----- Original Message ----- From: "Roman Black" To: Sent: Monday, July 08, 2002 7:29 PM Subject: Re: [PIC]: Cheap easy small ram > Thanks Bob, actually I didn't think of using the > hardware SPI. :o) > -Roman > > > Bob Ammerman wrote: > > > > Roman, > > > > The SPI FRAM can be accessed using just a couple instructions per byte using > > the hardware SPI. One trick you can use is not to bother checking for the > > 'completed' flag. You will "know" it has been set after the appropriate > > number of instructions. > > > > By setting the SPI clock to Tinst, you can 'pipelne' access to the FRAM at 9 > > (maybe 8) instructions per byte. While one byte is transfering you are > > getting the next byte ready to send (on writes) or processing the previously > > read byte (on reads). > > > ----- Original Message ----- > > > > > At 10:44 PM 7/5/02 +1000, you wrote: > > > > >I'm working on an idea for a robot navigation > > > > >system using a PIC, but I need approx 2000 bytes > > > > >or RAM. The ram only needs to be written/read > > > > >sequentially, > > -- > http://www.piclist.com hint: The PICList is archived three different > ways. See http://www.piclist.com/#archives for details. > > -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.