What this 8-bit PSoC1 brings to a mixed-signal board
The CY8C24423A-24PVXI is an 8-bit M8C-core MCU from the PSoC®1 CY8C24xxx series, running at 24 MHz with 4 KB of on-chip Flash and 256 bytes of RAM. It packs a 10-channel 14-bit ADC and a 2-channel 9-bit DAC, plus I²C, SPI, and UART/USART serial interfaces — enough analog front-end and digital connectivity to handle sensor conditioning, simple control loops, or human-interface tasks without external converters. The 24 I/O lines, POR/PWM/WDT peripherals, and internal oscillator mean you can run a small mixed-signal board with few external parts.
Housed in a 28-pin SSOP (0.209-inch body width, 5.30 mm wide), surface-mount.
Where the CY8C24423A-24PVXI fits vs a larger sibling
The CY8C29466-24PVXI runs the same M8C core at the same 24 MHz but packs 32 KB Flash and 2 KB RAM — eight times the program memory — plus a 12-channel 14-bit ADC and a 4-channel 9-bit DAC. It also comes in a 28-SSOP package, so the footprint is identical. If your code fits in 4 KB and you do not need the extra analog channels, the CY8C24423A-24PVXI is the cost-optimised choice; if you are bumping up against Flash or need more ADC inputs, the CY8C29466-24PVXI is a drop-in upgrade without a board spin.