Hi all. I'm working on a digital gadget that requires user interface, particularly, physical buttons and touch buttons.
Is there any suggestion on which MCU to use to implement touch sensing?
I will also need PWM, I2C slave and ADC features, so dedicated touch sensors won't work. UART is also welcomed for debugging purposes.
I'm currently looking at MSP430 CapTIva, UFM8SB1 and PSoC 4000, I've used neither, and I can learn to use either.
The chosen technology must have very small package, 0.4mm/0.5mm pitch WLCSP first. QFN up to 4mm*4mm is acceptable, WLCSP less than 0.4mm is not an option.
I need moisture rejection, water spill rejection is not required. Wake up on touch is not needed. Operating voltage: 3.1V (3.2V Li-ion cutoff minus 0.1V LDO drop-out).
Thanks in advance.
Solved. PSoC4200 selected.