PSoC 1 mixed-signal array — 8-bit M8C at 24 MHz with 8 KB Flash
The Infineon CY8C21512-24PVXA is an 8-bit PSoC 1 device from the CY8C21xxx series, built around the proprietary M8C core clocked at 24 MHz.
Supply rail and I/O — 3 V nominal, 5 V tolerant?
The supply voltage is specified at 3 V, and the part is not rated for 5 V operation — a common question when replacing older 5 V logic. If your design runs a 5 V bus, you will need level translation or a different PSoC 1 variant. The 24 I/O lines are 3 V-tolerant and can interface with 3.3 V peripherals directly, but driving a 5 V input without translation risks exceeding the absolute maximum ratings.
Package and footprint — 28-pin SSOP
The CY8C21512-24PVXA comes in a 28-lead SSOP (shrink small-outline package) with a 0.65 mm pitch. It is a surface-mount package suited for reflow assembly. The 'XA' suffix indicates a lead-free / RoHS-compliant finish, so no special baking or handling beyond standard MSL precautions is needed for lead-free solder profiles.
Lifecycle status — active, no LTB risk
This makes it safe to qualify into new designs and to continue sourcing for existing BOMs without obsolescence-driven redesign.