My New Favorite PSoC1 | Cypress Semiconductor
My New Favorite PSoC1
March 26, 2010
I have been involved with PSoC for 10 years now. What I have enjoyed most is the improvement we have made in features as we went along. The decimators have gotten better and we have made the analog bus standard starting with the 21x34 family.
For a long time the USB PSoC was my favorite was my favorite because of its dual analog bus.
My new favorite is the 28x family (Emerald). It doesn’t have USB but it has all else.
There now are 4 decimators that allow for four simultaneous Delta Sigma ADCs. These decimators can be connected to logic to allow complex signal analysis (RMS, power factor, multiplying ADCs) . I built a synchronous detection to measure complex impedance with one. Although not yet implemented in the tools it is possible to average the outputs of multiple delta sigma modulators. There is special analog hardware for doing CapSense. So you can build a complete system with CapSense just being a component in it!
There are now up to 12 digital blocks. And the digital blocks have single shot functionality added to them. There is also another digital function that produces a digital signal allowing the building of a Delta Sigma DAC (DS single stage digital modulator).
Is it expensive? Not really? Many have been comparing it to the 29x family. Back then we split the different block counts into families. 29x, 27x, 24x. With Emerald they are all 28x. They just have different versions with different block counts. It would be like someone costing the price of a 24x app with the 29x.
It also drives LCDs directly (No drive chip). So take a look at this puppy. I think you will be impressed.