>which doesn't seem to fit with descriptions in Philips' I2C >Peripherals book. Am I a victim of poor terminology ? Check the Philips I2C spec at http://www.semiconductors.philips.com/acrobat/literature/9398/39340011.pdf for all the relevant terminology and how the NACK should be used. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist