Could you help to explain more about the "capacitive switch" ?
Generally, CapSense IC doesn't require a specified 'capacitive switch' to work, just need some simply sensor pattern. But it may support to detect the capacitor changing in a reasonable range.
See theses application notes:
YEs you are right about the capacitive sensing.
Basically I have two capacitive pads on a flexible PCB, I wan to sense touch on the two sensors and generate high/low using an IC. it should be automotive and I prefer a standalone IC not a microcontroller.
CapSense is a complex system. It uses analog parts to to be front end, uses digital part to convert analog raw data to be more linear digital data, uses CPU to implement filters and calculate logic results. So a standalone CapSense IC is also a MCU with analog and digital peripherals.
PSoC4 is FYI.http://www.cypress.com/products/32-bit-arm-cortex-m0-psoc-4 These series supports automotive applications.
There are some 'standalone CapSense IC', not requiring writing code, just requiring configuration. These ICs are also MCUs with fixed firmware. For example, MBR3 series. But due to the firmware is fixed, the application field is not so wide as those CapSense MCU without firmware.