Erik Malund wrote:
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There are philips '51 derivatives with hardware I2C drivers.
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Altenatively, if you want a hardware I2C solution on a '51 derivative without the hardware on board, Philips has the PCD 8584 I2C-bus controller.
See http://www.semiconductors.philips.com/acrobat/a.../an425.pdf
for a specific application note with samplecode (ASM)

Henk