PSoC 4 BLE MCU with integrated Bluetooth and CapSense
The Infineon CY8C4248LQI-BL583 is a PSoC 4 BLE microcontroller from the CY8C4xx8 BLE series, built around an ARM Cortex-M0 core clocked at 48 MHz. The part integrates Bluetooth LE, capacitive touch sensing (CapSense), LCD drive, and a 16-channel 12-bit SAR ADC plus two IDACs, making it a single-chip solution for wireless sensor nodes and human-machine interfaces.
48 MHz Cortex-M0 — throughput and timing
The 48 MHz core clock is the performance ceiling for this device. At this speed, the Cortex-M0 executes most single-cycle instructions, and the Flash controller requires zero wait states for aligned 32-bit reads up to 48 MHz — no wait-state configuration needed unless you push beyond. For BLE stack + application code, the 256 KB Flash leaves room for the Bluetooth stack plus a modest application; the 32 KB SRAM handles BLE packet buffers and a few kilobytes of sensor data. If your application needs more than 32 KB of RAM for large frame buffers or complex analytics, step up to the PSoC 6 family.
Integrated Bluetooth and CapSense — peripheral fit
The 36 GPIOs in the 56-QFN package provide enough pins for a small keypad, a few LEDs, and sensor inputs while leaving serial lines free. The 16-channel 12-bit SAR ADC samples at up to 1 Msps (typical), adequate for most sensor readouts. The two IDACs can generate analog reference currents or drive external loads without an external DAC.
Infineon lists the CY8C4248LQI-BL583 as Active (current production). This part is suitable for qualification into new designs without an imminent obsolescence risk. For dual-sourcing, the CY8C4247LQI-BL473 is a pin-compatible sibling with 128 KB Flash and 8x12b ADC — a drop-in for lower memory or ADC channel count needs.