Package and mounting
The Cypress CY8C5867AXI-LP024 is a PSoC 5 device built around a 32-bit ARM Cortex-M3 core clocked at 67 MHz. What sets this part apart from a plain MCU is the programmable analog and digital fabric: the on-chip CapSense block handles touch-sensing without a dedicated controller, the LCD drive supports direct segment display connection, and the 20-bit delta-sigma ADC reads sensors at high resolution. The supply range from 1.71V to 5.5V lets it sit on a 3.3V or 5V industrial bus without a secondary regulator — one less line item on the BOM.
The 1.71V to 5.5V supply window means it can run from a single Li-ion cell (down to 3.0V with margin) or a 5V±10% industrial rail. The 100-TQFP package (14x14 mm) with 62 accessible I/O gives enough pins for a parallel LCD bus, a touch-sensor matrix, and a UART or two for debug logging. If your board lives in a conditioned lab or an outdoor enclosure with passive cooling, this temperature grade fits without derating.
Mixed-signal converters — one chip does the analog front-end
The data-converter block includes a 20-bit delta-sigma ADC, a 12-bit SAR ADC, and four 8-bit DACs.
Lifecycle — active, no LTB on the horizon
This part carries no imminent obsolescence risk.