50 MHz 8051 core with on-chip programmable analog
The CY8C3246LTI-149 is an 8-bit MCU built around the 8051 core running at 50 MHz, part of the PSOC® 3 CY8C32xx family from Infineon Technologies.
Memory, connectivity, and peripheral headroom
Program memory is 64 KB of Flash (64K x 8), backed by 2 KB of EEPROM for non-volatile parameter storage and 8 KB of SRAM for data buffers and stack. The 64 KB Flash ceiling suits firmware images that include a bootloader plus a moderate application layer — a typical CapSense-based UI or sensor-fusion algorithm fits without external memory. The 38 I/O lines are multiplexed with the CapSense, LCD segment drive, and PWM outputs, so the actual usable I/O count depends on which peripherals are enabled — a full LCD segment drive can consume 16–24 pins, leaving 14–22 for general-purpose use. The data converter block provides 16 multiplexed inputs to a single 12-bit SAR ADC, plus a separate 8-bit DAC. The ADC sample rate is not listed in the summary, but the 12-bit resolution and 16-channel mux are typical for reading multiple analog sensors (potentiometers, thermistors, strain gauges) on a single conversion cycle.