The low-cost, low pin count PIC12LF1552 is Microchip Technology Inc.’s smallest (2×3 mm UDFN package) and lowest-cost PIC MCU with hardware I2C support, and includes a four channel 10-bit Analog-to-Digital Converter (ADC) with hardware Capacitive Voltage Divider (CVD) support for capacitive touch sensing.
The new MCU features 3.5 KB Flash program memory, 256 Bytes RAM, a 32 MHz internal oscillator, low-voltage operation from 1.8V to 3.6V, and low power consumption for active and sleep currents of 50 µA/MHz and 20 nA, respectively.
The hardware CVD enables a more efficient implementation of capacitive sensing for touch applications. This “Core-Independent Peripheral” includes additional control logic that enables automated sampling, which reduces software size and minimizes CPU usage. It also provides automatic control of guard-ring drive and a programmable sample-and-hold capacitance, to better match larger touch or proximity sensors.
The PIC12LF1552 MCU is offered in 8-pin PDIP, SOIC, MSOP and 2x3x0.5 mm UDFN packages.