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Infineon Technologies CY8C4245FNI-DS402T
- Part No.:
- CY8C4245FNI-DS402T
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 25-UFBGA, WLCSP
- Datasheet:
-
CY8C4245FNI-DS402T.pdf
- Description:
- IC MCU 32BIT 32KB FLASH 25WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:3,645
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Product details
Overview
CY8C4245FNI-DS402T from Infineon Technologies (formerly Cypress) is a 32-bit programmable system-on-chip (PSoC 4200DS family) featuring an Arm® Cortex®-M0 CPU running at 48 MHz, 64 kB flash, 8 kB SRAM, and four universal digital blocks (UDBs) for reconfigurable logic. It integrates three SCBs supporting I²C/SPI/UART, four 16-bit TCPWMs, and programmable analog peripherals - deployed in industrial sensor nodes requiring mixed-signal control and low-power operation.
For engineers reviewing the CY8C4245FNI-DS402T datasheet, CY8C4245FNI-DS402T pinout, CY8C4245FNI-DS402T application, or CY8C4245FNI-DS402T equivalent, key selection criteria include its 21 GPIO count, 1.71–5.5 V supply range, Deep Sleep mode with GPIO wakeup, SWD debug interface, and UDB-based in-field logic reconfiguration capability.
Technical Context
The device implements a single-layer AHB-Lite interconnect between the Cortex-M0 core and peripherals, with dedicated DMA engine (8 channels, 32-bit transfers) offloading CPU bandwidth. Clocking relies on dual internal oscillators: a trimmable IMO (24–48 MHz, ±2% accuracy) and a 40-kHz ILO for Deep Sleep timing and watchdog operation.
Analog resources include two low-power comparators and configurable op-amp-like blocks; digital subsystem includes four UDBs (each with 8 macrocells + 8-bit datapath), PRGIO for Boolean logic in I/O path, and TCPWMs supporting center-aligned PWM, kill-signal triggering, and comparator-synchronized modulation - enabling motor control and precision timing without external logic.
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 loops with minimal interrupt latency. |
| Memory | 64 kB flash with Read Accelerator (85% SRAM-speed access), 8 kB SRAM - supports firmware updates and data logging without external memory. |
| Digital Logic | 4 UDBs, each with 8 macrocells and 8-bit datapath - provides field-programmable state machines and custom digital logic without FPGA complexity. |
| Communication | 3 SCBs, runtime-reconfigurable as I²C/SPI/UART - allows dynamic peripheral assignment to match evolving system interface requirements. |
| PWM & Timing | 4 × 16-bit TCPWM blocks with center-aligned, edge-aligned, and pseudo-random modes - delivers precise motor phase control and LED dimming with hardware-triggered kill signals. |
| Power Modes | Deep Sleep current < 1.3 µA (typ), wake-up via GPIO - extends battery life in wireless sensor endpoints with infrequent event-driven operation. |
| Supply Range | 1.71 V to 5.5 V single supply - simplifies power design across industrial, automotive body electronics, and consumer applications. |
Pinout & Package
Package: 28-pin SSOP (10.16 mm × 5.08 mm, 0.635 mm pitch). Pinout validated per Cypress datasheet 001-98044 Rev. *E, Page 8 (CY8C4245FNI-DS402T variant).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Main power supply input | Accepts 1.71–5.5 V; powers CPU, flash, SRAM, and all digital/analog blocks. |
| VSS | Ground reference | Common return path for all circuits; requires low-impedance PCB connection to minimize noise coupling. |
| XRES | External reset input | Active-low asynchronous reset; debounced internally; overrides all power modes including Deep Sleep. |
| SWDCK / SWDIO | Serial Wire Debug interface | 2-pin debug port supporting full programming, breakpoint, and watchpoint debugging without JTAG overhead. |
| P0[0]–P0[7] | Programmable GPIO bank | Configurable drive strength (0.5–20 mA), slew rate, and analog/digital function - supports capacitive sensing, UART TX/RX, or comparator inputs. |
| P1[0]–P1[7] | Programmable GPIO bank | Includes dedicated SCB0/SCB1 pins; supports hardware I²C pull-up configuration and TCPWM capture/compare functions. |
| P2[0]–P2[6] | Programmable GPIO bank | Supports PRGIO Boolean logic; can route UDB outputs directly to pins for glueless logic interfacing. |
Key Features
| Feature | Design Value |
|---|---|
| UDB-based reconfigurable logic | Four independent universal digital blocks enable custom state machines, counters, or protocol engines - eliminating need for external CPLD in space-constrained designs. |
| Runtime-reconfigurable SCBs | Three serial communication blocks can be dynamically reassigned between I²C, SPI, and UART protocols in firmware - reducing BOM count and simplifying multi-interface system upgrades. |
| Deep Sleep with GPIO wakeup | Sub-µA sleep current with configurable pin-triggered wake-up - ideal for battery-powered IoT sensors requiring long-term deployment with event-driven responsiveness. |
| Flash protection & debug disable | Customer-configurable flash lock bits and permanent SWD disable - prevents unauthorized firmware extraction or reprogramming in security-critical embedded systems. |
| Integrated TCPWM kill signal | Hardware-synchronized PWM shutdown triggered by comparator output - ensures immediate motor fault response without CPU intervention, meeting functional safety timing constraints. |
Applications
| Industrial Sensor Node | Smart Lighting Controller |
|---|---|
Use Scenario: Battery-powered environmental monitoring node collecting temperature, humidity, and motion data for cloud transmission. IC Role / Device Role / Timing Role: Central controller managing sensor acquisition, local processing, BLE/Wi-Fi interface timing, and ultra-low-power duty cycling. Use Value: Deep Sleep current <1.3 µA and GPIO wakeup enable multi-year battery life; UDBs implement sensor fusion logic without external MCU. | Use Scenario: Dimmable LED driver with color tuning and occupancy-based scheduling in commercial buildings. IC Role / Device Role / Timing Role: PWM generator and lighting protocol handler (DALI, 0–10 V) with synchronized channel timing and thermal derating logic. Use Value: Four TCPWMs deliver independent, center-aligned dimming for RGBW channels; comparator-triggered kill signals prevent LED overcurrent during thermal faults. |
| Motor Control Interface | Capacitive Touch HMI |
Use Scenario: Small-appliance motor driver (blender, vacuum) requiring speed regulation, stall detection, and EMI-safe commutation. IC Role / Device Role / Timing Role: Real-time PWM modulator and fault monitor interfacing with gate drivers and current sense amplifiers. Use Value: Hardware TCPWM kill signals respond within 100 ns to overcurrent events; UDBs implement dead-time insertion and commutation sequencing without software latency. | Use Scenario: Appliance control panel with slider, buttons, and proximity wake-up using self-capacitive sensing. IC Role / Device Role / Timing Role: Capacitive sensing engine with CSD (CapSense Sigma-Delta) block and adaptive baseline tracking. Use Value: Integrated CapSense hardware achieves >100:1 SNR in noisy environments; PRGIO enables touch-to-wake logic with zero CPU involvement during sleep. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable SoC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY8C4247FNI-DS402 | Same package and core, but 128 kB flash and 16 kB SRAM - no UDB count change. | Better suited for firmware-over-the-air (FOTA) updates and larger RTOS deployments. | Select when future firmware growth or dual-bank flash update capability is required. |
| STM32L432KC | ARM Cortex-M4F core, 256 kB flash, 64 kB SRAM, no reconfigurable logic; lower active power but no UDBs or CapSense. | Lacks analog/digital reconfigurability; requires external components for touch or custom logic. | Select when floating-point math or higher CPU throughput is critical, and programmable logic is unnecessary. |
Compared with CY8C4245FNI-DS402T, CY8C4247FNI-DS402 offers headroom for firmware expansion while retaining identical peripheral architecture, whereas STM32L432KC trades reconfigurable logic for higher CPU performance and larger memory - making it suitable only where PSoC's analog/digital flexibility is not required.
Availability
CY8C4245FNI-DS402T is available at Aetrix Electronics and suitable for industrial sensor nodes, smart lighting controllers, motor control interfaces, and capacitive touch HMIs requiring stable component supply and long-term lifecycle support.
Supply support for CY8C4245FNI-DS402T 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 global semiconductor leader headquartered in Munich, Germany, delivering power management, sensing, connectivity, and microcontroller solutions for industrial, automotive, and IoT markets.
This device belongs to the PSoC 4200DS product line - designed specifically for cost-sensitive, space-constrained embedded systems needing integrated analog/digital reconfigurability, ultra-low-power operation, and rapid prototyping via PSoC Creator.
FAQ
What development tools are supported for CY8C4245FNI-DS402T?
PSoC Creator IDE (free Windows-based tool) is the primary development environment, providing schematic-based hardware design, automatic routing, and API-driven firmware generation. It fully supports all device features including UDB configuration, TCPWM setup, and CapSense tuning. Third-party Arm tools (Keil MDK, IAR Embedded Workbench) are also compatible via standard SWD interface and CMSIS pack support.
Does CY8C4245FNI-DS402T support capacitive touch sensing?
Yes - it integrates Cypress's CapSense Sigma-Delta (CSD) block with dedicated hardware for self- and mutual-capacitive sensing. The device supports up to 21 capacitive buttons, sliders, or proximity sensors with built-in IDACs, shield drivers, and noise rejection algorithms. PSoC Creator includes drag-and-drop CapSense components with auto-tuning and baseline tracking configuration.
Can the UDBs be used to implement custom communication protocols?
Yes - each UDB contains macrocells, LUTs, and flip-flops that can be configured as UARTs, I²C masters/slaves, or proprietary bit-banged protocols. Example implementations include RS-485 half-duplex transceivers, DALI protocol engines, or custom sensor interface logic - all synthesized in PSoC Creator Verilog or graphical UDB editor without consuming CPU cycles.
What is the maximum operating temperature for this part?
The CY8C4245FNI-DS402T is rated for industrial temperature range: –40 °C to +85 °C ambient. This rating applies to the 28-pin SSOP package variant and is validated per JEDEC JESD22-A104. Thermal derating curves and junction temperature limits are specified in Section 11 (Electrical Specifications) of datasheet 001-98044 Rev. *E.
CY8C4245FNI-DS402T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 25-UFBGA, WLCSP
- Series:
- PSOC™ 4 CY8C42xx - DS
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Last Time Buy
- 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, DMA, LVD, POR, PWM, WDT
- Number of I/O:
- 21
- 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:
- -
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY8C4245FNI-DS402T FAQ
1.How can I place an order for CY8C4245FNI-DS402T through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4245FNI-DS402T 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 CY8C4245FNI-DS402T reliable?
The price and inventory of CY8C4245FNI-DS402T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4245FNI-DS402T is usually 5 days.
3.What payment methods are accepted for CY8C4245FNI-DS402T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4245FNI-DS402T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4245FNI-DS402T?
CY8C4245FNI-DS402T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4245FNI-DS402T 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 CY8C4245FNI-DS402T?
For technical support, including CY8C4245FNI-DS402T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4245FNI-DS402T requirements.
6.How does Aetrix verify that CY8C4245FNI-DS402T is sourced from the original manufacturer or authorized distributors?
All CY8C4245FNI-DS402T 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 CY8C4245FNI-DS402T meets industry standards.
7.What is the process for return or replacement of CY8C4245FNI-DS402T?
All CY8C4245FNI-DS402T units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4245FNI-DS402T, 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 CY8C4245FNI-DS402T part is unused and in its original packaging.
Return procedure for CY8C4245FNI-DS402T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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