On Wed, Jan 1, 2020 at 5:55 PM Bob kb8tq <[email protected]> wrote: > > Hi > > ....... SOIC-8 is an 8 pin rather than a 6 pin package :)
Almost any 6-pin devices will work too, if the objective is just to inject configuration into an SPI device. Hardware SPI is an optional luxury, not a requirement. Bit-banging SPI works just fine. I have done this with early PICs. May have been I2C. Even at the very low end of the more common device catalogs, program memory will be sufficient to toggle out up to hundred(s) or so bits, instruction by instruction (no looping.) Thus a nice project for the crafty could be to write a script to generate custom bit-loading firmware for flea-size uCs without the need for a PIC/AVR/ST/etc. devel environment - just bracket a series of bit-toggling instructions with some once-generated uC management boilerplate. If board area is the issue and soldering tech is not, 8-pad DFN packages are smaller footprint than 6-lead SOT-23s. another Magnus _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
