24 MHz Cortex-M0+ with on-chip CapSense — the compact touch controller MCU
The standout feature is the integrated CapSense peripheral — no external touch controller IC needed, which saves board space and BOM cost on capacitive-button or slider panels.
With 19 I/O and connectivity including I²C, SPI, UART/USART, LINbus, and IrDA, this part handles most sensor-to-host or human-interface tasks. The 24-UFQFN Exposed Pad package (4x4 mm body) keeps the footprint small — useful for space-constrained designs like a capacitive touchpad or a handheld controller.
Industrial temperature range and active lifecycle — low risk for production
It is not AEC-Q100 qualified, so it stays out of under-hood automotive designs. The ROHS3 compliance covers current environmental regulations. For long-term stock, store the reels dry — the QFN package is MSL 3 out of the bag, so bake before reflow if the moisture barrier bag has been open past the floor-life window.
This is not a direct-from-factory line item, but the active lifecycle means supply is stable through the broker market — no premium for a last-time-buy scramble. If you need a dual-source hedge, the PSoC 4 family has several pin-compatible siblings with more memory or I/O, but the CY8C4024LQI-S411 itself is the entry-level density option in the 24-QFN footprint.