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Infineon Technologies CY8C4248LQI-BL453
- Part No.:
- CY8C4248LQI-BL453
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 56-UFQFN Exposed Pad
- Datasheet:
-
CY8C4248LQI-BL453.pdf
- Description:
- IC MCU 32BIT 256KB FLASH 56QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,480
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Product details
Overview
CY8C4248LQI-BL453 from Infineon is a 32-bit Arm® Cortex®-M0 microcontroller integrating AIROC™ Bluetooth® LE 4.2 radio, 48 MHz CPU, 256 KB flash, 32 KB SRAM, and programmable analog/digital blocks. It delivers embedded wireless control for battery-powered IoT endpoints with integrated capacitive sensing, LCD drive, and low-power operation down to 150 nA in Hibernate mode.
For engineers reviewing the CY8C4248LQI-BL453 datasheet, CY8C4248LQI-BL453 pinout, CY8C4248LQI-BL453 application, or CY8C4248LQI-BL453 equivalent, key selection criteria include BLE RF performance (–89 dBm RX sensitivity, +3 dBm TX), Deep Sleep current (1.5 µA), SAR ADC resolution (12-bit, 1-Msps), GPIO count (up to 36), and package compatibility (7 mm × 7 mm 56-pin QFN).
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 dual-clock architecture uses IMO (internal main oscillator) at 48 MHz for CPU execution and WCO (watch crystal oscillator) for ultra-low-power timing during Deep Sleep.
The analog subsystem includes four opamps with Comparator mode and ADC input buffering, plus a 12-bit SAR ADC with channel sequencer and signal averaging-enabling high-SNR capacitive sensing via CSD and SmartSense hardware tuning without firmware overhead.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm® Cortex®-M0, 48 MHz with single-cycle multiply and DMA support for real-time sensor fusion and BLE protocol stack execution |
| Memory | 256 KB flash (with read accelerator) and 32 KB SRAM-sufficient for BLE stack + custom application firmware + OTA update partitioning |
| BLE Radio | Bluetooth® LE 4.2 compliant; –89 dBm RX sensitivity and +3 dBm TX output enable robust 10–30 m range in compact PCB antenna designs |
| ADC | 12-bit SAR, 1-Msps sampling rate with differential/single-ended modes and hardware-averaged channel sequencing for noise-immune sensor acquisition |
| Power Modes | Hibernate: 150 nA with RAM retention; Deep Sleep: 1.5 µA with WCO active-enables multi-year coin-cell battery life in periodic-sensing applications |
| GPIO | Up to 36 programmable pins; any pin supports CAPSENSE™, LCD segment/common, analog input, or digital I/O with configurable drive strength and slew rate |
| Package | 7 mm × 7 mm, 56-pin QFN (LQI) with exposed thermal pad-optimized for space-constrained wearable and sensor node PCB layouts |
Pinout & Package
Package: 7 mm × 7 mm, 56-pin QFN (LQI) with exposed thermal pad (pin 56 = VSSD). Pin functions validated per Infineon datasheet 002-23053 Rev. *B, pages 17–26.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDIO | I/O power supply | 1.71–5.5 V tolerant; powers all GPIOs and digital peripherals-supports mixed-voltage interface with sensors or displays |
| VDDD | Digital core supply | 1.71–5.5 V; supplies CPU, flash, SRAM, and digital logic-decoupling required near pin for stable 48 MHz operation |
| VSSD | Digital ground | Reference for VDDD and all digital signals; must be connected to exposed thermal pad for thermal and EMI performance |
| P0[0]–P0[7] | General-purpose I/O | Support CAPSENSE™, LCD, analog input, or digital communication; configurable pull-up/down and drive strength |
| P12[0]–P12[7] | General-purpose I/O | Same functionality as P0; includes two overvoltage-tolerant (OVT) pins for direct connection to 5 V buses or industrial sensors |
| XRES | Active-low reset input | Asynchronous reset pin; internal pull-up enables standalone operation without external reset circuitry |
| SWDCK/SWDIO | Debug interface | Two-pin SWD interface for programming and real-time debugging using MiniProg3 or compatible debug probes |
Key Features
| Feature | Design Value |
|---|---|
| Integrated BLE Subsystem (BLESS) | Dedicated hardware link-layer engine eliminates CPU overhead for BLE advertising, scanning, and connection management-freeing Cortex-M0 for application tasks |
| Capacitive Sensing (CSD) | Hardware-accelerated sigma-delta sensing with >5:1 SNR and liquid-tolerance-enables reliable touch interfaces on wet or curved surfaces without firmware tuning |
| Programmable Analog Blocks | Four opamps with comparator mode and ADC input buffering-support sensor signal conditioning, window detection, and low-power wake-on-event without waking CPU |
| Reconfigurable Digital Logic (UDBs) | Four universal digital blocks, each with eight macrocells and data path-allow custom state machines, PWM generators, or protocol engines without FPGA-level complexity |
| Low-Power Timing | Watch crystal oscillator (WCO) operational in Deep Sleep at 1.5 µA-enables precise timekeeping and periodic wake-up for sensor polling every second or minute |
Applications
| Smart Wearable Sensor Hub | BLE-Enabled Industrial Control Panel |
|---|---|
Use Scenario: Compact wrist-worn device monitoring heart rate, motion, and ambient light with daily sync to smartphone. IC Role / Device Role / Timing Role: Central MCU executing BLE GATT server, sensor fusion algorithm, and capacitive button interface; WCO maintains accurate time between 10-second sensor reads. Use Value: 150 nA Hibernate mode extends CR2032 battery life beyond 18 months; integrated CSD eliminates external touch controller BOM cost. | Use Scenario: Factory-floor HMI panel with tactile buttons, segmented LCD display, and wireless configuration updates. IC Role / Device Role / Timing Role: Single-chip controller managing LCD segment drive in Deep Sleep, BLE OTA firmware updates, and OVT GPIOs interfacing with 24 V PLC inputs. Use Value: Direct 24 V-tolerant GPIOs reduce external level-shifter count; segment LCD drive active during Deep Sleep cuts display power by 90% vs. full MCU wake. |
| Wireless Medical Patch Monitor | Asset Tracking Beacon |
Use Scenario: Disposable skin-adhesive patch measuring temperature and ECG, transmitting encrypted data hourly to gateway. IC Role / Device Role / Timing Role: Secure BLE endpoint with AES hardware acceleration, medical-grade analog front-end (opamp + 12-bit ADC), and Hibernate-triggered transmission. Use Value: Hardware AES and isolated analog path meet IEC 62304 Class B requirements; 12-bit ADC with signal averaging ensures sub-0.1°C temperature accuracy. | Use Scenario: Battery-powered logistics tag reporting location and temperature every 5 minutes via BLE to warehouse gateways. IC Role / Device Role / Timing Role: Ultra-low-power beacon controller using WCO wake-up timer, RSSI-based proximity detection, and internal temperature sensor. Use Value: –89 dBm RX sensitivity enables reliable reception at 25 m indoors; 1.5 µA Deep Sleep with WCO achieves 5+ year battery life on AA cells. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Bluetooth® LE microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Nordic nRF52840-QIAA | ARM Cortex-M4F core, 1 MB flash, no integrated capacitive sensing or LCD drive; higher TX power (+8 dBm) but larger 7×7 mm QFN-48 package | Better for compute-intensive BLE mesh or USB-CDC applications; lacks native CAPSENSE™ and segment LCD support | Select when floating-point math or USB connectivity is required; avoid if touch interface or low-cost LCD integration is critical |
| Texas Instruments CC2642R1F | ARM Cortex-M4F, 352 KB flash, integrated RF balun, lower Deep Sleep current (1.1 µA), but no programmable analog blocks or UDBs | Optimized for long-range BLE beacons and sensor nodes with minimal analog signal conditioning needs | Select for RF layout simplicity and lowest sleep current; avoid when hardware-accelerated capacitive sensing or custom digital logic is needed |
Compared with nRF52840-QIAA and CC2642R1F, CY8C4248LQI-BL453 uniquely integrates programmable analog/digital fabric with BLE-reducing system BOM count by eliminating discrete opamps, comparators, and logic ICs while enabling field-tunable sensor interfaces.
Availability
CY8C4248LQI-BL453 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 manufacturing traceability.
Supply support for CY8C4248LQI-BL453 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 MCUs, and secure connectivity solutions, with global R&D and wafer fabrication infrastructure.
CY8C4248LQI-BL453 belongs to the PSoC™ 4 CY8C4xxx-BL family-designed specifically for integrated wireless edge nodes where BLE connectivity, capacitive sensing, and ultra-low-power operation must coexist on a single chip without external analog or logic components.
FAQ
What is the maximum operating frequency of the Arm® Cortex®-M0 CPU in CY8C4248LQI-BL453?
The CPU operates at up to 48 MHz, enabled by the internal main oscillator (IMO) with optional PLL multiplication. This frequency is fully supported across all voltage ranges (1.71–5.5 V) and temperature grades (–40°C to +85°C), and is verified in the device's AC electrical specifications table (Section 5.2.1 of datasheet 002-23053 Rev. *B).
Does CY8C4248LQI-BL453 support Over-The-Air (OTA) firmware updates?
Yes-OTA DFU is fully supported via the BLE stack using the standard BLE Device Firmware Update service (0x180A). Infineon provides reference firmware (AN91267, AN97060) and bootloader components in PSoC™ Creator that implement secure, banked flash swapping with rollback protection and CRC validation.
Can the integrated opamps operate in Deep Sleep mode?
Yes-four opamps can remain powered and functional in Deep Sleep mode when configured with appropriate clock sources (e.g., WCO or LFCLK). They support comparator mode and ADC input buffering, enabling wake-on-analog-event functionality without CPU intervention, as documented in Section 1.4.2 of the datasheet.
What is the RF matching network requirement for the onboard PCB antenna?
The device requires a pi-network matching circuit consisting of two series capacitors (C1, C2) and one shunt capacitor (C3) between the RF pin (P12[3]) and antenna feed point. Component values depend on PCB stack-up and antenna geometry; AN91445 provides layout guidelines and simulation-based tuning procedures for 2.4 GHz band optimization.
CY8C4248LQI-BL453 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 56-UFQFN Exposed Pad
- Series:
- PSOC™ 4 CY8C4xx8 BLE
- Packaging:
- Tray
- Product Status:
- Obsolete
- 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, Cap Sense, 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 SAR; D/A 2xIDAC
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY8C4248LQI-BL453 FAQ
1.How can I place an order for CY8C4248LQI-BL453 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4248LQI-BL453 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 CY8C4248LQI-BL453 reliable?
The price and inventory of CY8C4248LQI-BL453 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4248LQI-BL453 is usually 5 days.
3.What payment methods are accepted for CY8C4248LQI-BL453?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4248LQI-BL453 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4248LQI-BL453?
CY8C4248LQI-BL453 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4248LQI-BL453 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 CY8C4248LQI-BL453?
For technical support, including CY8C4248LQI-BL453 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4248LQI-BL453 requirements.
6.How does Aetrix verify that CY8C4248LQI-BL453 is sourced from the original manufacturer or authorized distributors?
All CY8C4248LQI-BL453 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 CY8C4248LQI-BL453 meets industry standards.
7.What is the process for return or replacement of CY8C4248LQI-BL453?
All CY8C4248LQI-BL453 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4248LQI-BL453, 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 CY8C4248LQI-BL453 part is unused and in its original packaging.
Return procedure for CY8C4248LQI-BL453:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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