ARM Cortex-M0+ core with 24 MHz ceiling and 64 KB Flash
The CY8C4126AZI-S433T: The 64 KB on-chip Flash and 8 K x 8 SRAM provide enough headroom for a modest application stack plus a real-time control loop — budget the HAL and CapSense library footprint against the 8 KB RAM before committing the BOM line.
On-chip CapSense and analog integration
The peripheral set includes CapSense, LCD drive, PWM, brown-out detect, POR, and WDT — the CapSense block handles touch-sensing without an external controller, saving a chip and the associated I2C bus traffic. The data converters comprise a 16-channel 10-bit slope ADC, a 16-channel 12-bit SAR ADC, and two IDAC outputs, covering basic analog front-end needs for sensor conditioning or capacitive touch. Connectivity spans I2C, SPI, UART/USART, IrDA, LINbus, Microwire, SmartCard, and SSP — enough serial interface variety to talk to common sensors, displays, and fieldbus transceivers without a protocol translator.
48-TQFP package and industrial temperature grade
Housed in a 48-TQFP (7x7 mm) package with 36 GPIOs brought out, the part is suited for reflow assembly and manual rework.