Infineon Technologies CY8C4247LQQ-BL483T

Overview

CY8C4247LQQ-BL483T from Infineon is a PSoC™ 4 programmable system-on-chip MCU integrating an Arm® Cortex®-M0 CPU (48 MHz), 256 KB flash, 32 KB SRAM, and a fully embedded AIROC™ Bluetooth® LE 4.2 radio subsystem with –89 dBm RX sensitivity and +3 dBm TX output. It supports capacitive sensing (CSD), 12-bit 1-Msps SAR ADC, and up to 36 GPIOs in a 7 mm × 7 mm 56-pin QFN package for compact wireless sensor node designs.

For engineers reviewing the CY8C4247LQQ-BL483T datasheet, CY8C4247LQQ-BL483T pinout, CY8C4247LQQ-BL483T application, or CY8C4247LQQ-BL483T equivalent, key selection criteria include integrated BLE PHY/link-layer coexistence with programmable analog/digital blocks, Deep Sleep current (1.5 µA), and hardware-accelerated CAPSENSE™ with SmartSense tuning.

Technical Context

This device implements a tightly coupled dual-subsystem architecture: the Arm® Cortex®-M0 core executes firmware while the dedicated BLESS (Bluetooth® Low Energy SubSystem) handles RF protocol stack offload, including Link Layer engine supporting both master and slave roles. The analog subsystem features four opamps with Comparator mode and ADC input buffering, all operable in Deep Sleep mode.

Digital flexibility stems from four Universal Digital Blocks (UDBs), each with eight macrocells and data path logic, enabling custom state machines or peripheral emulation. Serial communication is managed via two reconfigurable SCBs supporting I²C/SPI/UART, and timing control uses four 16-bit TCPWM blocks with comparator-triggered kill signals for motor drive safety.

Key Specifications

Pinout & Package

The CY8C4247LQQ-BL483T is housed in a 7 mm × 7 mm, 56-pin QFN package (suffix LQQ) with wettable flank leads and an exposed thermal pad for enhanced thermal dissipation in compact wireless modules.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar BLE-integrated microcontroller applications.

Compared with nRF52833 and DA14695, CY8C4247LQQ-BL483T uniquely combines BLE radio, programmable analog (opamps, ADC, CSD), and digital logic (UDBs) in one die - reducing component count and layout risk for cost-sensitive, sensor-rich BLE endpoints.

Availability

CY8C4247LQQ-BL483T is available at Aetrix Electronics and suitable for wireless sensor nodes, smart home interfaces, BLE beacons, and industrial asset trackers requiring stable component supply and long-term manufacturability.

Supply support for CY8C4247LQQ-BL483T includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Infineon Technologies is a German semiconductor manufacturer specializing in power management, automotive ICs, and embedded security solutions, with global manufacturing and R&D infrastructure.

The PSoC™ 4 CY8C4xxx-BL product line was designed to deliver programmable analog + digital + BLE integration in a single chip for rapid development of intelligent, low-power IoT edge devices.

FAQ

Does CY8C4247LQQ-BL483T require an external crystal for BLE operation?

No. The device integrates a Watch Crystal Oscillator (WCO) that meets Bluetooth® LE timing accuracy requirements (±50 ppm) for advertising and connection intervals. An external 32 kHz crystal is optional for higher precision or ultra-low-jitter timing in non-BLE functions.

Can the SAR ADC operate while the device is in Deep Sleep mode?

Yes - the 12-bit SAR ADC can perform conversions in Deep Sleep mode using the WCO clock source. Channel sequencing and averaging are supported, enabling autonomous multi-sensor polling without waking the CPU.

What is the maximum allowed voltage on GPIO pins configured as analog inputs?

GPIO pins used as analog inputs must not exceed the corresponding VDDIO supply voltage (1.71–5.5 V). Overvoltage-tolerant (OVT) pins P0.0 and P0.1 support up to 5.5 V regardless of VDDIO, but standard GPIOs clamp at VDDIO + 0.3 V per absolute maximum ratings.

Is the AIROC™ BLE subsystem certified for regulatory compliance?

Yes - the integrated AIROC™ BLE radio subsystem carries FCC, IC, CE, and MIC certifications. Final system-level certification requires validation of the host PCB layout, antenna design, and enclosure per AN91445 and AN95089 guidelines.