I need a single chip solution for a control system and DSP application. The primary consideration is board area. The second, cost. Here's what I'm looking for: - 5V supply and I/O. - Embedded ADC (at least 1, preferably 8). Slow rate (50 Hz). - Small FPGA fabric. About the size of a small spartan. - Embedded block ram (4 KBytes). - Flash FPGA. Would like not to have separate config prom. - Low I/O count. I only need about 30 pins.
Does anything like this exist? If 5V I/O is not possible, what's needed to translate about 12 pins from 3.3/1.2 to 5V?
Also, what's envolved for FPGA based software defined radio? I'd like to build an RC (as in radio control airplane) receiver. Most FM radios hop between 2 frequencies to encode pulse widths which in turn drive the RC servos. So nothing digital. It just needs to extract the pulse train from the FM. I would consider trading an FM receiver chip for an external high-speed ADC and a larger FPGA if it buys enough flexibility.
Regards, Tom