Infineon Technologies CY8C4247FLI-BL493T

Overview

CY8C4247FLI-BL493T from Infineon is a programmable 32-bit Arm® Cortex®-M0 microcontroller integrating AIROC™ Bluetooth® LE 4.2 radio, 48 MHz CPU, 256 KB flash, 32 KB SRAM, and reconfigurable analog/digital blocks. It serves as a system-on-chip for wireless sensor nodes and BLE-enabled human interface devices, supporting capacitive sensing, LCD drive, and dual SCB peripherals for I²C/SPI/UART.

For engineers reviewing the CY8C4247FLI-BL493T datasheet, CY8C4247FLI-BL493T pinout, CY8C4247FLI-BL493T application, or CY8C4247FLI-BL493T equivalent, key selection criteria include integrated BLE PHY performance (–89 dBm RX sensitivity, +3 dBm TX), Deep Sleep current (1.5 µA), 12-bit 1-Msps SAR ADC with sequencer, and 36 GPIOs with CAPSENSE™/LCD/analog/digital reconfiguration capability.

Technical Context

This MCU implements a tightly coupled BLE subsystem (BLESS) with dedicated digital PHY and link-layer engine supporting concurrent master/slave roles. Its RF transceiver drives a 50-Ω antenna directly and delivers 1-dB-resolution RSSI alongside configurable TX power (–18 to +3 dBm).

The analog subsystem includes four opamps with Comparator mode and ADC input buffering-operable in Deep Sleep-and a 12-bit SAR ADC with differential/single-ended sampling, channel sequencing, and hardware signal averaging. Digital flexibility stems from four UDBs (each with eight macrocells) and two reconfigurable SCBs.

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 DA1469x, CY8C4247FLI-BL493T uniquely integrates reconfigurable analog (opamps, ADC, IDACs), CAPSENSE™ hardware, and LCD drive in a single die-reducing component count and layout complexity for sensor+HMI+BLE edge nodes.

Availability

CY8C4247FLI-BL493T is available at Aetrix Electronics and suitable for wireless sensor nodes, BLE human interface devices, industrial control panels, and smart home hub peripherals requiring stable component supply and long-term lifecycle support.

Supply support for CY8C4247FLI-BL493T 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 R&D and manufacturing infrastructure.

CY8C4247FLI-BL493T belongs to the PSoC™ 4 CY8C4xxx-BL family, designed specifically for integrated BLE + mixed-signal edge applications where programmable analog/digital resources reduce external component count and accelerate HMI development.

FAQ

What is the maximum supported BLE data throughput for CY8C4247FLI-BL493T?

The device supports Bluetooth® LE 4.2 with a theoretical maximum PHY throughput of 1 Mbps. Real-world application-layer throughput depends on connection interval, packet size, and host stack implementation; typical sustained throughput in GATT-based profiles ranges from 100–300 kbps under standard 20-ms connection intervals and MTU negotiation.

Does CY8C4247FLI-BL493T require an external crystal for BLE operation?

Yes - it requires a 24 MHz fundamental-mode crystal connected to XTAL_IN/XTAL_OUT pins for BLE RF timing. The crystal must meet ±20 ppm stability and be paired with a matching network per Infineon's AN91445 RF layout guidelines to ensure regulatory compliance and optimal range.

Can the opamps operate while the device is in Deep Sleep mode?

Yes - all four opamps and both low-power comparators retain full functionality in Deep Sleep mode (1.5 µA), enabling continuous analog monitoring (e.g., window comparator wake-up) without CPU intervention or exit from low-power state.

How many CAPSENSE™ buttons can be implemented simultaneously on this device?

Up to 36 self-capacitive or mutual-capacitive buttons can be scanned using the integrated CSD block, limited only by available GPIOs and scan time budget. SmartSense™ auto-calibration supports up to 16 buttons with liquid tolerance and >5:1 SNR in production environments without manual tuning.