μblog: engineering from the trenches

For some time now, I have been looking at the RFID offerings from TI due to their simplicity and high levels of integration. Sure, the inductive coil is not on the die, but that’s not such a huge problem. I have a design idea where I can simply connect the RI-TMS3705ADR to an Atmel 8051 and connect that to PC via RS-232 to form a simple interface. Because this is a low frequency device (~130Khz) the antenna can be a simple set of wire loops. For now, I must wait for the universal programmer to return to program the 8051 and some free time to come up to put this thing together. Below is a datasheet, application note and training presentation fro TI.

( RI-TMS3705_ds.pdf ) ( lf_reader_intro.pdf ) ( LF_20TMS3705A_20ASIC.pdf )

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