Infineon Technologies CY8C4248FLI-BL483T

Overview

CY8C4248FLI-BL483T from Infineon is a 32-bit Arm® Cortex®-M0 microcontroller integrating AIROC™ Bluetooth® LE 4.2 radio, 256 KB flash, 32 KB SRAM, and programmable analog/digital blocks. It delivers –89 dBm RX sensitivity, +3 dBm TX output, and operates at 48 MHz in active mode with 1.7 mA consumption. Used in battery-powered BLE sensor nodes requiring integrated RF, capacitive touch, and low-power timing.

For engineers reviewing the CY8C4248FLI-BL483T datasheet, CY8C4248FLI-BL483T pinout, CY8C4248FLI-BL483T application, or CY8C4248FLI-BL483T equivalent, key selection criteria include BLE PHY compliance, Deep Sleep current (1.5 µA), SAR ADC resolution (12-bit, 1-Msps), and GPIO flexibility for CAPSENSE™/LCD/UART/SPI/I2C routing.

Technical Context

This MCU implements a dual-domain architecture: the Arm® Cortex®-M0 core handles firmware execution and protocol stack management, while the dedicated BLESS (Bluetooth® Low Energy Subsystem) handles link-layer operations including master/slave mode arbitration, packet encryption, and RF state control. The BLESS includes a 2.4-GHz transceiver with integrated 50-Ω antenna drive and digital PHY supporting BLE 4.2 features like Data Length Extension and Secure Connections.

Analog subsystem integration includes four opamps with Comparator mode and ADC input buffering, plus a 12-bit SAR ADC with channel sequencer and signal averaging-enabling simultaneous sensor acquisition and BLE advertising without CPU intervention. Digital reconfigurability is delivered via four UDBs (Universal Digital Blocks), each containing eight macrocells and data path logic for custom state machines or peripheral offload.

Key Specifications

Pinout & Package

Package: 7 mm × 7 mm, 56-pin QFN (exposed thermal pad), RoHS-compliant, moisture sensitivity level 3.

Key Features

Applications

Equivalent & Alternatives

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

Compared with nRF52833 and CC2642R, CY8C4248FLI-BL483T uniquely integrates BLE radio, programmable analog/digital fabric, and CAPSENSE™ engine in one die-reducing system-level component count and enabling field-tunable sensor interfaces without hardware revision.

Availability

CY8C4248FLI-BL483T is available at Aetrix Electronics and suitable for smart wearables, industrial HMIs, medical patches, and asset tracking beacons requiring stable component supply, long-term lifecycle support, and qualified BLE 4.2 certification.

Supply support for CY8C4248FLI-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, sensor, and connectivity solutions for automotive, industrial, and IoT markets.

CY8C42xx-BL belongs to the PSoC™ 4 family designed specifically for highly integrated, low-power embedded systems where BLE connectivity, capacitive touch, and mixed-signal programmability must coexist on a single chip.

FAQ

What development tools are supported for CY8C4248FLI-BL483T?

PSoC™ Creator IDE is the primary design environment, offering schematic-based hardware configuration and C firmware development. It supports drag-and-drop peripheral placement, automatic analog/digital routing, and pre-verified components for BLE, CAPSENSE™, and TCPWM. Industry-standard Arm® tools (Keil MDK, GCC) can also be used after initial hardware setup.

Does CY8C4248FLI-BL483T require an external crystal for BLE operation?

No. The integrated AIROC™ BLESS uses an internal RC oscillator for BLE timing, but a 24 MHz external crystal (XTAL) is required for full-speed CPU operation and high-accuracy timing. A 32.768 kHz watch crystal (WCO) is mandatory for Deep Sleep mode and RTC functionality.

Can all 36 GPIOs be used simultaneously for CAPSENSE™ and communication protocols?

Yes - all GPIOs are multiplexed and reconfigurable. However, CAPSENSE™ scanning and high-speed SPI/I2C may contend for shared analog routing resources. PSoC™ Creator's resource mapping tool validates concurrent usage and allocates UDBs or SCBs to avoid conflicts during build.

What is the maximum operating temperature for continuous BLE transmission?

The device is rated for industrial temperature range (–40 °C to +85 °C). At +85 °C ambient, sustained +3 dBm TX operation is thermally sustainable only with proper PCB thermal design: ≥4 cm² copper pour under exposed thermal pad, ≤2 °C/W board thermal resistance, and airflow >0.5 m/s per Infineon AN91445 guidelines.