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Infineon Technologies CY8C4248FNI-BL573T
- Part No.:
- CY8C4248FNI-BL573T
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 76-UFBGA, WLCSP
- Datasheet:
-
CY8C4248FNI-BL573T.pdf
- Description:
- IC MCU 32BIT 256KB FLASH 76WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:3,904
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Product details
Overview
CY8C4248FNI-BL573T 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 in Deep Sleep at 1.5 µA with WCO active-enabling battery-powered BLE sensor nodes and smart home peripherals.
For engineers reviewing the CY8C4248FNI-BL573T datasheet, CY8C4248FNI-BL573T pinout, CY8C4248FNI-BL573T application, or CY8C4248FNI-BL573T equivalent, key selection criteria include integrated BLE subsystem performance, capacitive sensing SNR (>5:1), low-power Deep Sleep operation, and reconfigurable UDB-based digital logic for firmware-defined peripherals.
Technical Context
The device implements a dual-domain architecture: an Arm® Cortex®-M0 CPU core with DMA and flash accelerator coexists with a dedicated Bluetooth® LE subsystem (BLESS) containing digital PHY, link-layer engine, and RF transceiver. The BLESS handles all BLE protocol stack layers up to L2CAP, offloading host CPU overhead.
Analog resources include four opamps supporting comparator mode and ADC input buffering, a 12-bit 1-Msps SAR ADC with channel sequencer and averaging, and two IDACs for CAPSENSE™. Digital flexibility comes from four Universal Digital Blocks (UDBs), each with eight macrocells and data path, enabling custom state machines or peripheral logic without FPGA-level complexity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm® Cortex®-M0, 48 MHz, single-cycle multiply - enables real-time sensor fusion and BLE packet processing without external co-processor |
| Flash / SRAM | 256 KB flash with read accelerator / 32 KB SRAM - supports full BLE stack + application firmware + OTA update partitioning |
| BLE Performance | RX sensitivity: –89 dBm; TX power: –18 to +3 dBm - achieves >100 m range in open-air with PCB antenna, sufficient for indoor IoT deployment |
| ADC | 12-bit SAR, 1 Msps, differential/single-ended, sequencer with signal averaging - enables high-accuracy temperature, voltage, or current monitoring with noise rejection |
| Low-Power Modes | Deep Sleep: 1.5 µA (WCO active); Hibernate: 150 nA (RAM retention) - extends coin-cell battery life to multi-year operation in wake-on-event designs |
| CAPSENSE™ | Capacitive sigma-delta (CSD) with SmartSense auto-tuning - provides liquid-tolerant touch buttons/sliders without manual calibration or shield layers |
| GPIO Count | Up to 36 programmable pins, including 2 OVT pins - supports mixed-signal I/O, LCD segment drive, and direct connection to sensors/actuators |
Pinout & Package
Package: 7 mm × 7 mm, 56-pin QFN (FNI suffix), thermally enhanced with exposed pad. Pin mapping validated per Infineon datasheet Rev. *B, page 17–26.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Core & I/O supply | 1.71–5.5 V operation; supports direct Li-ion or coin-cell input with internal LDO regulation |
| GND | Ground reference | Dual GND pins (GND1/GND2) and exposed thermal pad required for RF stability and EMI control |
| P0[0]–P0[7] | Programmable GPIO | Support CAPSENSE™, analog input, SCB (I²C/SPI/UART), TCPWM, and LCD segment drive |
| XTAL_IN / XTAL_OUT | BLE RF crystal interface | Connects to 24 MHz fundamental-mode crystal for BLE radio timing; requires matching network per AN91445 |
| WCO_IN / WCO_OUT | Watch crystal oscillator | 32.768 kHz crystal for Deep Sleep timing; enables wake-up events every 125 ms to 4 s without CPU intervention |
| SWDCLK / SWDIO | Debug interface | Two-pin ARM Serial Wire Debug port - allows programming and real-time debugging without dedicated JTAG header |
Key Features
| Feature | Design Value |
|---|---|
| Integrated BLE Subsystem (BLESS) | Dedicated hardware link-layer engine and RF transceiver - eliminates need for external BLE module, reducing BOM count and PCB area by ~30% |
| Programmable Analog Blocks | Four opamps with Comparator mode + 12-bit SAR ADC - enables simultaneous analog sensor conditioning, threshold detection, and digitization without external components |
| Universal Digital Blocks (UDBs) | Four UDBs, each with 8 macrocells and data path - supports user-defined peripherals like quadrature decoders, custom PWM generators, or protocol accelerators |
| CAPSENSE™ CSD with SmartSense | Hardware-accelerated sigma-delta modulation + automatic tuning - achieves >5:1 SNR and tolerates water droplets on overlay, eliminating manual calibration effort |
| Flexible Serial Peripherals | Two reconfigurable SCBs supporting I²C/SPI/UART dynamically at runtime - simplifies interface adaptation across sensor types without firmware recompile |
Applications
| Smart Home Sensor Node | Wearable Health Monitor |
|---|---|
Use Scenario: Battery-powered temperature/humidity/light sensor reporting via BLE to smartphone gateway. IC Role / Device Role / Timing Role: Main MCU + integrated BLE radio + analog sensor interface + low-power scheduler. Use Value: Single-chip solution reduces bill-of-materials cost by eliminating discrete BLE module and external ADC/opamp; Deep Sleep current of 1.5 µA enables 2+ year CR2032 battery life. | Use Scenario: Wrist-worn pulse oximeter with capacitive touch controls and real-time SpO₂ streaming. IC Role / Device Role / Timing Role: Signal acquisition controller, CAPSENSE™ touch handler, BLE streaming endpoint, and power manager. Use Value: Integrated CSD block with SmartSense delivers reliable touch under sweat; 12-bit ADC with averaging ensures clinical-grade photodiode signal resolution. |
| Industrial Asset Tracker | Bluetooth Beacon Transmitter |
Use Scenario: GPS-denied indoor asset tag using BLE RSSI triangulation and motion-triggered reporting. IC Role / Device Role / Timing Role: Motion-aware edge node with accelerometer interface, BLE advertising broadcaster, and wake-on-motion controller. Use Value: Low-power comparators operate in Deep Sleep to detect movement; RSSI resolution of 1 dB enables sub-meter proximity estimation accuracy. | Use Scenario: Fixed-location beacon broadcasting UUID, major/minor values for proximity marketing or indoor navigation. IC Role / Device Role / Timing Role: Standalone BLE advertising transmitter with configurable TX power and interval timing. Use Value: +3 dBm max TX power extends broadcast range to 150+ meters line-of-sight; programmable advertising interval (20 ms–10.24 s) balances battery life and responsiveness. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar BLE MCU applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Nordic nRF52833 DK | 64 MHz Arm® Cortex®-M4F, 512 KB flash, 128 KB RAM; no integrated analog peripherals or CAPSENSE™ | Requires external ADC/opamp for analog sensing; better suited for compute-intensive BLE mesh or audio streaming | Select when higher CPU throughput or floating-point math is needed; avoid if analog integration or touch UI is primary requirement |
| Texas Instruments CC2642R | 48 MHz Arm® Cortex®-M4F, 352 KB flash, 80 KB RAM; includes 12-bit ADC but no programmable analog blocks or UDBs | Lacks reconfigurable digital logic; fixed-function peripherals only; lower CAPSENSE™ robustness in wet environments | Prefer for long-range BLE (125 kbps coded PHY) or TI ecosystem compatibility; not optimal for mixed-signal customization |
Compared with nRF52833 DK and CC2642R, CY8C4248FNI-BL573T uniquely combines BLE radio, programmable analog/digital fabric, and production-ready CAPSENSE™-making it optimal for cost-sensitive, analog-rich, touch-enabled BLE endpoints where hardware reuse and field tuning matter.
Availability
CY8C4248FNI-BL573T is available at Aetrix Electronics and suitable for smart home sensor nodes, wearable health monitors, industrial asset trackers, and Bluetooth beacon transmitters requiring stable component supply and long-term lifecycle support.
Supply support for CY8C4248FNI-BL573T 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 secure connectivity solutions, with global R&D and manufacturing infrastructure.
CY8C42xx-BL belongs to the PSoC™ 4 family, designed specifically for highly integrated, low-power, mixed-signal Bluetooth® LE endpoints where analog sensing, capacitive touch, and firmware-defined peripherals must coexist on a single die.
FAQ
What development tools are supported for CY8C4248FNI-BL573T?
Infineon's PSoC™ Creator IDE (Windows-only, free) is the primary tool, offering schematic-based design entry, automatic analog/digital routing, and pre-verified component libraries. Arm®-compliant tools like Keil MDK and GCC-based toolchains are also supported post-design export. Debug uses standard SWD interface via MiniProg3 or KitProg2 programmers.
Does CY8C4248FNI-BL573T require external crystals for BLE operation?
Yes: a 24 MHz fundamental-mode crystal is mandatory for the BLE RF subsystem (XTAL_IN/XTAL_OUT), and a 32.768 kHz watch crystal (WCO_IN/WCO_OUT) is required for Deep Sleep timing and precise wake-up intervals. Both crystals must be placed per layout guidelines in AN91445 and AN95089.
Can the onboard ADC measure signals beyond VDD?
No: the SAR ADC input range is limited to 0 V to VDD (1.71–5.5 V). For signals exceeding VDD or below GND, external signal conditioning (e.g., level-shifting opamp circuit) is required. The device does not support negative input rails or internal reference voltages outside the VDD range.
Is CAPSENSE™ functionality available in Deep Sleep mode?
Yes: CAPSENSE™ CSD hardware operates in Deep Sleep mode using the WCO clock source. Touch scanning can be triggered by WCO-based timer events or external interrupts, consuming only 1.5 µA total system current - enabling always-on touch interfaces with multi-year battery life on coin cells.
CY8C4248FNI-BL573T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 76-UFBGA, WLCSP
- Series:
- PSOC™ 4 CY8C4xx8 BLE
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M0
- Core Size:
- 32-Bit Single-Core
- Speed:
- 48MHz
- Connectivity:
- I2C, IrDA, LINbus, Microwire, SmartCard, SPI, SSP, UART/USART
- Peripherals:
- Bluetooth, Brown-out Detect/Reset, CapSense, DMA , LVD, POR, PWM, SmartCard, SmartSense, WDT
- Number of I/O:
- 36
- Program Memory Size:
- 256KB (256K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 32K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.71V ~ 5.5V
- Data Converters:
- A/D 16x12b; D/A 1x7b, 1x8b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY8C4248FNI-BL573T FAQ
1.How can I place an order for CY8C4248FNI-BL573T through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4248FNI-BL573T on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for CY8C4248FNI-BL573T reliable?
The price and inventory of CY8C4248FNI-BL573T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4248FNI-BL573T is usually 5 days.
3.What payment methods are accepted for CY8C4248FNI-BL573T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4248FNI-BL573T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4248FNI-BL573T?
CY8C4248FNI-BL573T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4248FNI-BL573T order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for CY8C4248FNI-BL573T?
For technical support, including CY8C4248FNI-BL573T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4248FNI-BL573T requirements.
6.How does Aetrix verify that CY8C4248FNI-BL573T is sourced from the original manufacturer or authorized distributors?
All CY8C4248FNI-BL573T products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that CY8C4248FNI-BL573T meets industry standards.
7.What is the process for return or replacement of CY8C4248FNI-BL573T?
All CY8C4248FNI-BL573T units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4248FNI-BL573T, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The CY8C4248FNI-BL573T part is unused and in its original packaging.
Return procedure for CY8C4248FNI-BL573T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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