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Infineon Technologies CY8C4245LQI-483
- Part No.:
- CY8C4245LQI-483
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 40-UFQFN Exposed Pad
- Datasheet:
-
CY8C4245LQI-483.pdf
- Description:
- IC MCU 32BIT 32KB FLASH 40QFN
- Quantity:
- Payment:
- Shipping:
Inventory:7,163
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Product details
Overview
CY8C4245LQI-483 from Infineon Technologies (formerly Cypress) is a 32-bit Arm Cortex-M0 programmable system-on-chip (PSoC® 4200 family) integrating MCU, reconfigurable analog/digital blocks, 12-bit 1-Msps SAR ADC, two opamps, and two SCBs supporting I²C/SPI/UART. It delivers 48 MHz operation, up to 32 kB flash, 4 kB SRAM, and operates from 1.71 V to 5.5 V. Used in capacitive touch HMI, motor control feedback, and low-power industrial sensor nodes.
For engineers reviewing the CY8C4245LQI-483 datasheet, CY8C4245LQI-483 pinout, CY8C4245LQI-483 application, or CY8C4245LQI-483 equivalent, key selection criteria include its integrated CapSense Sigma-Delta (CSD) engine with >5:1 SNR, Deep Sleep wakeup via GPIO or comparator, TCPWM kill-signal triggering for motor safety, and SWD debug interface with 4 breakpoint/2 watchpoint comparators.
Technical Context
The device implements a single-layer AHB-Lite interconnect between CPU, memory, and peripherals, with dedicated DSI (Digital System Interconnect) routing for UDB-to-peripheral signal flow. Its analog subsystem includes CTBm (Capacitive Touch Block) with SmartSense™ auto-tuning and SAR ADC with hardware channel sequencer and signal averaging.
Digital programmability centers on four Universal Digital Blocks (UDBs), each containing eight macrocells and a data path, enabling custom logic, state machines, or peripheral extensions without external components. Clock management supports IMO (Internal Main Oscillator), ILO (Internal Low-Speed Oscillator), and external crystal inputs with dynamic switching and gating per subsystem.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M0, 48 MHz max - enables deterministic real-time control with Thumb-2 ISA compatibility for future migration to M3/M4. |
| Flash Memory | 32 kB with Read Accelerator - delivers ~85% of SRAM access speed at 48 MHz, supports EEPROM emulation and row-level protection. |
| SAR ADC | 12-bit, 1-Msps, differential/single-ended - includes hardware sequencer, signal averaging, and direct opamp buffering for precision sensor interfacing. |
| CapSense Engine | CSD with >5:1 SNR and water tolerance - enables robust touch buttons/sliders in wet or noisy environments without firmware compensation. |
| Low-Power Modes | 20 nA Stop Mode with GPIO wakeup - allows battery-powered devices to maintain long shelf life while retaining fast wake latency. |
| Debug Interface | Serial Wire Debug (SWD), 4 breakpoints, 2 watchpoints - provides full on-chip debugging using standard Arm tools without external pods or emulators. |
| TCPWM Blocks | Four 16-bit timer/counter/PWM units - support center-aligned PWM, pseudo-random dithering, and comparator-triggered kill signals for functional safety. |
Pinout & Package
Package: 48-pin TQFP (LQI suffix), 7 mm × 7 mm, 0.5 mm pitch, exposed thermal pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Main power supply input | Accepts 1.71–5.5 V; powers digital core, analog blocks, and I/O; requires local 100 nF + 10 µF decoupling. |
| VSS | Ground reference | System ground return; must be connected to PCB ground plane with low-inductance path to minimize noise coupling. |
| P0[0]–P0[7] | Programmable GPIO port 0 | Support CapSense, analog input/output, LCD segment/common, UART TX/RX, or digital logic; configurable drive strength/slew rate. |
| P1[0]–P1[7] | Programmable GPIO port 1 | Same functionality as P0; includes dedicated SCB0 and SCB1 pins for I²C/SPI/UART; supports Deep Sleep wakeup. |
| SWDCLK / SWDIO | Debug interface signals | 2-wire Serial Wire Debug interface; SWDIO is bidirectional; both pins default to debug mode unless disabled in firmware. |
| XRES | External reset input | Active-low asynchronous reset; internal pull-up; can be driven by external supervisor or button; resets CPU, peripherals, and clocks. |
Key Features
| Feature | Design Value |
|---|---|
| SmartSense™ Auto-Tuning | Hardware-accelerated CapSense calibration eliminates manual tuning across temperature/humidity variations and PCB stackup changes. |
| UDB Programmability | Four independent universal digital blocks enable custom logic (e.g., encoder interfaces, CRC generators, or protocol accelerators) without FPGA or external glue logic. |
| Comparator-Triggered Kill Signal | Hardware-level TCPWM shutdown within <100 ns upon comparator threshold violation - critical for motor overcurrent or overtemperature fault response. |
| Deep Sleep LCD Drive | LCD segments/commmons remain active with 4-bit memory retention during Deep Sleep - enables ultra-low-power display updates without CPU wake. |
| Flash Security Modes | Three-tier protection (Open/Protected/Kill) with irreversible Kill mode preventing flash read/write/debug after activation - meets basic secure boot requirements. |
Applications
| Industrial HMI Panels | Brushless DC Motor Controllers |
|---|---|
Use Scenario: Touch-enabled operator interface on factory HMIs with glove operation and splash resistance. IC Role / Device Role / Timing Role: Primary controller running CapSense CSD engine, driving segmented LCD, and managing CAN/I²C communication to PLC. Use Value: >5:1 SNR and water tolerance eliminate false touches; Deep Sleep LCD retention reduces panel standby power to <10 µW. | Use Scenario: Sensorless BLDC commutation with current sensing, PWM generation, and thermal fault monitoring. IC Role / Device Role / Timing Role: Real-time motor control unit executing FOC algorithms, generating three-phase center-aligned PWM, and sampling shunt currents via SAR ADC. Use Value: Comparator-triggered TCPWM kill signal disables gate drivers within 100 ns on overcurrent detection - prevents MOSFET destruction. |
| Portable Medical Sensors | Smart Building Occupancy Detectors |
Use Scenario: Battery-powered pulse oximeter with analog front-end, LED driver control, and BLE interface. IC Role / Device Role / Timing Role: Signal acquisition controller performing synchronized red/IR LED timing, ADC sampling, and digital filtering before BLE transmission. Use Value: 20 nA Stop Mode extends coin-cell battery life to >2 years; opamp+ADC input buffering enables 16-bit effective resolution at 100 Hz. | Use Scenario: Wall-mounted PIR + ultrasonic occupancy sensor with adaptive sensitivity and wireless reporting. IC Role / Device Role / Timing Role: Multi-sensor fusion hub combining analog PIR output, ultrasonic time-of-flight measurement, and ambient light sensing. Use Value: Programmable analog blocks condition PIR signal without external opamps; UDBs implement digital correlation filters for noise immunity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable mixed-signal MCU applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY8C4247LQI-483 | Same package and pinout; 64 kB flash, 8 kB SRAM - no change to analog/digital peripheral count or clock specs. | Required when firmware exceeds 32 kB or needs larger RAM buffers for audio processing or protocol stacks. | Select if future firmware growth or multi-protocol support (e.g., BLE + Zigbee) demands more memory headroom. |
| STM32L432KC | Arm Cortex-M4F @ 80 MHz, 256 kB flash, 64 kB SRAM; no integrated CapSense or UDBs; separate analog peripherals. | Suitable for high-precision sensor fusion but requires external touch controller or custom PCB layout for capacitive sensing. | Choose when floating-point math, DSP acceleration, or larger code footprint outweighs need for on-die programmable analog/digital flexibility. |
Compared with CY8C4247LQI-483, the CY8C4245LQI-483 trades memory capacity for cost and footprint efficiency in fixed-function designs; versus STM32L432KC, it offers superior integration for touch-centric, low-BOM industrial controls but less raw compute throughput.
Availability
CY8C4245LQI-483 is available at Aetrix Electronics and suitable for industrial HMI panels, brushless DC motor controllers, and portable medical sensors requiring stable component supply across extended temperature ranges (–40 °C to +105 °C).
Supply support for CY8C4245LQI-483 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 acquired Cypress Semiconductor in 2020 and maintains full product continuity, documentation, and support for the PSoC® portfolio.
The PSoC 4200 family targets cost-sensitive, highly integrated embedded systems where analog/digital configurability, capacitive sensing, and ultra-low-power operation reduce bill-of-materials and design cycle time.
FAQ
Does CY8C4245LQI-483 support USB connectivity?
No. The device lacks a USB PHY or dedicated USB controller. Communication is limited to the two SCBs configured as I²C, SPI, or UART. For USB host/device functionality, an external USB-to-UART bridge (e.g., CP2102N) or companion MCU with USB is required.
Can the SAR ADC perform simultaneous sampling on multiple channels?
No. The single SAR ADC supports sequential sampling via hardware channel sequencing, with configurable sample-and-hold timing and signal averaging per channel. True simultaneous sampling requires external analog multiplexers or discrete ADCs.
What is the maximum operating frequency of the internal IMO oscillator?
The Internal Main Oscillator (IMO) is factory-trimmed to 48 MHz ±2% across voltage and temperature. It serves as the default system clock source and can be dynamically switched or divided; no external crystal is required for basic operation.
Is the WLCSP variant of this part pin-compatible with the TQFP package?
No. The CY8C4245LQI-483 uses a 48-pin TQFP package. The 35-ball WLCSP variant is a different part number (e.g., CY8C4245AZI-483) with distinct pin mapping, ball pitch (0.4 mm), and thermal characteristics - not mechanically or electrically interchangeable.
CY8C4245LQI-483 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 40-UFQFN Exposed Pad
- Series:
- PSOC™ 4 CY8C42xx
- Packaging:
- Tray
- 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:
- Brown-out Detect/Reset, CapSense, LCD, LVD, POR, PWM, WDT
- Number of I/O:
- 34
- Program Memory Size:
- 32KB (32K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 4K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.71V ~ 5.5V
- Data Converters:
- A/D 8x12b SAR; D/A 2xIDAC
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY8C4245LQI-483 FAQ
1.How can I place an order for CY8C4245LQI-483 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4245LQI-483 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 CY8C4245LQI-483 reliable?
The price and inventory of CY8C4245LQI-483 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4245LQI-483 is usually 5 days.
3.What payment methods are accepted for CY8C4245LQI-483?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4245LQI-483 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4245LQI-483?
CY8C4245LQI-483 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4245LQI-483 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 CY8C4245LQI-483?
For technical support, including CY8C4245LQI-483 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4245LQI-483 requirements.
6.How does Aetrix verify that CY8C4245LQI-483 is sourced from the original manufacturer or authorized distributors?
All CY8C4245LQI-483 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 CY8C4245LQI-483 meets industry standards.
7.What is the process for return or replacement of CY8C4245LQI-483?
All CY8C4245LQI-483 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4245LQI-483, 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 CY8C4245LQI-483 part is unused and in its original packaging.
Return procedure for CY8C4245LQI-483:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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