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Infineon Technologies CY8C4245AXI-483
- Part No.:
- CY8C4245AXI-483
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 44-LQFP
- Datasheet:
-
CY8C4245AXI-483.pdf
- Description:
- IC MCU 32BIT 32KB FLASH 44TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,626
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Product details
Overview
CY8C4245AXI-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 CY8C4245AXI-483 datasheet, CY8C4245AXI-483 pinout, CY8C4245AXI-483 application, or CY8C4245AXI-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 four hardware breakpoints.
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 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 FPGA-level complexity. All SCBs and TCPWM blocks support runtime reconfiguration - e.g., switching an SCB from UART to I²C mode in firmware.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M0, 48 MHz max, single-cycle 32-bit multiply - enables deterministic real-time control and Thumb-2 binary compatibility with Cortex-M3/M4. |
| Flash / SRAM | 32 kB flash with Read Accelerator (1 WS @ 48 MHz); 4 kB SRAM retained in Hibernate - supports firmware updates and state retention during power loss. |
| ADC | 12-bit SAR, 1 Msps, differential/single-ended, channel sequencer + signal averaging - enables high-resolution sensor acquisition with noise suppression. |
| Analog Peripherals | 2 opamps (reconfigurable drive modes, Comparator/ADC buffer), 2 LP comparators (Deep Sleep active), 2 IDACs - supports analog front-end design for touch, current sensing, and threshold detection. |
| Digital Peripherals | 2 SCBs (I²C/SPI/UART reconfigurable), 4 TCPWM (center/edge-aligned PWM + comparator-triggered kill), 4 UDBs - provides flexible communication, motor timing, and custom logic without external glue logic. |
| Power Modes | 20 nA Stop Mode (GPIO wakeup), Deep Sleep (comparator wakeup), Hibernate (SRAM retention) - enables battery-powered operation for >10-year shelf life in metering or IoT endpoints. |
| CapSense | CapSense Sigma-Delta (CSD) engine with >5:1 SNR and water tolerance - delivers robust touch button/slider performance in wet or noisy environments. |
Pinout & Package
CY8C4245AXI-483 is housed in a 48-pin TQFP package (10 mm × 10 mm, 0.5 mm pitch) with exposed thermal pad. Pin functions are fully configurable per GPIO port (P0–P4), supporting analog input/output, digital logic, CapSense, LCD segment/common, and serial communication roles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD / VSS | Power supply / Ground | Single 1.71–5.5 V rail powers entire chip; VSS pins must be low-inductance connected to minimize noise in analog/sensor paths. |
| P0[0]–P0[7] | Programmable GPIO Port 0 | Supports CapSense, analog input (SAR ADC), opamp output, or SCB SDA/SCL - configured at runtime via PSoC Creator. |
| P1[0]–P1[7] | Programmable GPIO Port 1 | Includes TCPWM capture/compare pins and UDB DSI inputs - used for motor phase sensing or encoder interfacing. |
| SWDIO / SWCLK | Serial Wire Debug interface | 2-wire JTAG-compatible debug port with 4 address breakpoints - enables full on-chip debugging without external emulators. |
| XRES | External reset input | Active-low asynchronous reset; internal pull-up ensures reliable startup when external reset circuitry is omitted. |
Key Features
| Feature | Design Value |
|---|---|
| SmartSense™ Auto-Tuning | Hardware-accelerated CapSense calibration eliminates manual tuning across temperature/humidity - reduces firmware development time by ~70% for touch UIs. |
| TCPWM Kill Signal | Comparator output directly triggers PWM shutdown within one clock cycle - meets SIL-2 functional safety requirements for motor overcurrent protection. |
| UDB Programmability | Four independent logic blocks with macrocell+datapath architecture - enables implementation of custom protocols (e.g., DALI, DMX) without external ASICs. |
| Deep Sleep Wake Sources | GPIO, LP comparators, RTC, WDT - allows ultra-low-power sensor polling every 10 s while drawing <1 µA average current. |
| Flash Security Modes | Open / Protected / Kill - "Kill" mode permanently disables debug and external erase, preventing firmware extraction in tamper-resistant applications. |
Applications
| Industrial Motor Control | Capacitive Touch HMI |
|---|---|
Use Scenario: Brushless DC motor commutation with overcurrent fault response. IC Role / Device Role / Timing Role: Real-time PWM generation, analog current sensing via SAR ADC, and comparator-triggered TCPWM kill signal. Use Value: Sub-microsecond fault shutdown prevents MOSFET destruction; integrated opamp buffers enable direct shunt resistor interfacing. | Use Scenario: Waterproof touch slider on kitchen appliance control panel. IC Role / Device Role / Timing Role: CapSense Sigma-Delta (CSD) engine with SmartSense™ auto-calibration and water rejection algorithm. Use Value: Maintains >5:1 SNR under condensation; eliminates need for overlay gap or mechanical buttons. |
| Smart Energy Metering | Low-Power Sensor Node |
Use Scenario: Tamper-resistant electricity meter with pulse counting and secure firmware updates. IC Role / Device Role / Timing Role: Secure flash execution (Kill mode), RTC-based billing interval timing, and isolated UART for metrology IC interface. Use Value: Prevents unauthorized firmware modification; retains SRAM contents during power interruption for accurate kWh accumulation. | Use Scenario: Battery-powered environmental monitor logging temperature/humidity every 5 minutes. IC Role / Device Role / Timing Role: Deep Sleep mode with comparator wakeup on threshold breach, SAR ADC sampling, and BLE-ready UART transmission. Use Value: Achieves 10+ year battery life using CR2032; programmable drive strength minimizes I/O leakage in humid conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable mixed-signal controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY8C4247AZI-M485 | Same PSoC 4200 family; 64 kB flash, 8 kB SRAM, 48-pin QFN package - no TQFP option. | Higher memory capacity suits complex BLE stack integration or dual-role firmware (sensor + gateway). | Select when firmware size exceeds 32 kB or board layout requires smaller QFN footprint. |
| STM32L432KC | Arm Cortex-M4, 80 MHz, 256 kB flash, 64 kB SRAM, but no programmable analog/digital blocks or CapSense engine. | Lacks hardware-accelerated capacitive sensing and reconfigurable logic - requires external components for touch or custom protocol handling. | Select when floating-point math or USB-CDC is required, and analog/digital flexibility is secondary to raw compute throughput. |
Compared with CY8C4245AXI-483, CY8C4247AZI-M485 offers more memory in a smaller package but lacks TQFP availability, while STM32L432KC provides higher CPU performance and larger memory but forfeits on-chip analog programmability and CapSense - making it less suitable for cost-sensitive, touch-integrated embedded designs.
Availability
CY8C4245AXI-483 is available at Aetrix Electronics and suitable for industrial motor control, capacitive touch HMI, smart energy metering, and low-power sensor node applications requiring stable component supply and long-term lifecycle support.
Supply support for CY8C4245AXI-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 now owns and supports the full PSoC® portfolio, including legacy Cypress devices like the CY8C4245AXI-483.
This part belongs to the PSoC 4200 product line, designed specifically for embedded systems requiring integrated analog sensing, programmable logic, and ultra-low-power operation in space-constrained industrial and consumer applications.
FAQ
Does CY8C4245AXI-483 support USB connectivity?
No. CY8C4245AXI-483 does not include a USB PHY or controller. It supports UART, I²C, and SPI through its two SCB peripherals. For USB host/device functionality, designers must use an external USB-to-UART bridge IC or select a PSoC 4100M/4200M variant with USBFS block - which CY8C4245AXI-483 lacks.
What debug interfaces are available on CY8C4245AXI-483?
CY8C4245AXI-483 features a 2-pin Serial Wire Debug (SWD) interface compatible with Arm CoreSight tools. It supports full read/write memory access, hardware breakpoints (4 address, 2 data), and real-time variable monitoring. Debug is enabled by default and can only be disabled in firmware - re-enabling requires full flash erase.
Can the opamps in CY8C4245AXI-483 drive external loads directly?
Yes - each opamp supports high-drive external mode (up to 25 mA sink/source) and can directly drive resistive or capacitive loads such as LCD segments, LED drivers, or analog sensor excitation circuits. Internal high-bandwidth mode is optimized for ADC buffering and comparator input stages.
Is the CapSense functionality certified for IEC 61000-4-3/6 immunity testing?
Yes - Cypress/Infineon provides CapSense design guides and reference layouts validated to meet IEC 61000-4-3 (radiated RF immunity) and IEC 61000-4-6 (conducted RF immunity) up to 10 V/m and 10 V, respectively. The CSD engine's spread-spectrum modulation and hardware filtering contribute to this compliance.
CY8C4245AXI-483 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 44-LQFP
- 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:
- 36
- 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:
CY8C4245AXI-483 FAQ
1.How can I place an order for CY8C4245AXI-483 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4245AXI-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 CY8C4245AXI-483 reliable?
The price and inventory of CY8C4245AXI-483 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4245AXI-483 is usually 5 days.
3.What payment methods are accepted for CY8C4245AXI-483?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4245AXI-483 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4245AXI-483?
CY8C4245AXI-483 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4245AXI-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 CY8C4245AXI-483?
For technical support, including CY8C4245AXI-483 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4245AXI-483 requirements.
6.How does Aetrix verify that CY8C4245AXI-483 is sourced from the original manufacturer or authorized distributors?
All CY8C4245AXI-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 CY8C4245AXI-483 meets industry standards.
7.What is the process for return or replacement of CY8C4245AXI-483?
All CY8C4245AXI-483 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4245AXI-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 CY8C4245AXI-483 part is unused and in its original packaging.
Return procedure for CY8C4245AXI-483:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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