is there a difference in the sensing-technology between the PSOC4 Capsense CSD Component and the MBR3 chips?
Afaik is the sensing principle the same, but the chip internals are quite different, no core, no code, just register setup.
From the MBR3 design guide -
2.2 Capacitive Touch-Sensing Method in CY8CMBR3xxxThe CY8CMBR3xxx controller uses a capacitive touch-sensing method - CapSense Sigma Delta PLUS (CSD PLUS)- to convert the changes in capacitance to digital counts. The CSD PLUS touch-sensing method delivers a signal-tonoise ratio (SNR) that ensures touch accuracy even in extremely noisy environments.The CSD PLUS CapSense sensing method in the CY8CMBR3xxx device incorporates CX into a switched capacitorcircuit, as Figure 2-5 shows. The sensor (CX) is alternatively connected to GND and the Analog MUX (AMUX) bus bythe non-overlapping switches Sw1 and Sw2. Sw1 and Sw2 are driven by the Precharge Clock to bleed a current(ISENSOR) from the AMUX bus. The magnitude of ISENSOR is directly proportional to the magnitude of CX. The sigmadelta converter samples the AMUX bus voltage and generates a modulating bit stream that controls the constantcurrent source, IDAC. The IDAC charges AMUX such that the average AMUX bus voltage is maintained at VREF. Thesensor bleeds off the current ISENSOR from the modulating capacitor (CMOD), which, in combination with Rbus, forms alow-pass filter that attenuates precharge-switching transients at the sigma-delta converter input.
thanks for the info.