Its supply voltage spans 1.71 V to 5.5 V, which means this part can sit directly on a 5 V industrial bus or a 3.3 V sensor rail without a regulator or level translator — a genuine BOM simplification for mixed-voltage designs. The 68-VFQFN package with exposed pad (8x8 mm) keeps the footprint compact while the pad aids thermal dissipation in enclosed or convection-limited enclosures.
On-chip analog and touch — CapSense, 12-bit ADC, 8-bit DAC
For a panel with touch buttons, a slider, and an analog sensor input, this MCU handles the entire front-end without external ADC or touch-controller ICs. The DMA engine moves data between peripherals and memory without CPU intervention, freeing the 8051 core for higher-level control or communication stack processing.
The PSOC 3 family has been in the field for years, and the toolchain (PSoC Creator) is mature and stable — no migration pressure from the vendor.
Peripheral connectivity and I/O count
With 38 general-purpose I/O pins and interfaces spanning EBI/EMI, I²C, LINbus, SPI, and UART/USART, this MCU can bridge to external memory, sensor networks, and serial displays.