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Infineon Technologies CY8C4246FNI-DS402T
- Part No.:
- CY8C4246FNI-DS402T
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 25-UFBGA, WLCSP
- Datasheet:
-
CY8C4246FNI-DS402T.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 25WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:2,569
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Product details
Overview
CY8C4246FNI-DS402T from Infineon Technologies (formerly Cypress) is a 32-bit Arm® Cortex®-M0 programmable system-on-chip (PSoC® 4200DS family) featuring 48 MHz CPU, 64 kB flash, 8 kB SRAM, four UDBs, and three reconfigurable SCBs supporting I²C/SPI/UART. It integrates programmable analog/digital logic, TCPWM, and GPIO with deep-sleep wakeup capability - deployed in industrial sensor nodes requiring field-reconfigurable signal conditioning and low-power wireless telemetry.
For engineers reviewing the CY8C4246FNI-DS402T datasheet, CY8C4246FNI-DS402T pinout, CY8C4246FNI-DS402T application, or CY8C4246FNI-DS402T equivalent, key selection criteria include UDB-based logic scalability, SWD debug support, 1.71–5.5 V operation, Deep Sleep current < 1.3 µA, and compatibility with PSoC Creator IDE for concurrent hardware/firmware co-design.
Technical Context
The device implements a single-layer AHB-Lite interconnect linking the Cortex-M0 core, flash accelerator, SRAM, and peripheral subsystems. Its clock architecture uses a trimmed internal main oscillator (IMO: 24–48 MHz ±2%) and low-power ILO (40 kHz), with six 16-bit dividers enabling precise peripheral clocking including fractional baud-rate generation for UART.
Digital programmability centers on four Universal Digital Blocks (UDBs), each with 8 macrocells and an 8-bit datapath, supported by a Programmable I/O Block (PRGIO) for Boolean logic in the signal path. Analog resources include two low-power comparators and configurable SAR ADC inputs routed via the high-speed I/O matrix.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M0 @ 48 MHz with single-cycle 32-bit multiply - enables deterministic real-time control loops without external math acceleration. |
| Memory | 64 kB flash with Read Accelerator (85% SRAM speed) + 8 kB SRAM - supports firmware updates and data logging in resource-constrained edge nodes. |
| Digital Logic | Four UDBs (8 macrocells each, 8-bit datapath) + PRGIO - allows custom state machines, glue logic, or protocol engines implemented in silicon without FPGA overhead. |
| Peripherals | Three SCBs (I²C/SPI/UART reconfigurable at runtime) + four 16-bit TCPWM blocks - permits dynamic interface adaptation and motor control timing with kill-signal triggering. |
| Power Modes | Deep Sleep current ≤1.3 µA with GPIO wakeup - sustains battery life >5 years in coin-cell-powered IoT endpoints with periodic sensor polling. |
| Debug & Security | Serial Wire Debug (SWD) with 4 breakpoints/2 watchpoints + flash protection + disableable debug - meets secure boot and field update requirements for certified industrial firmware. |
Pinout & Package
Package: 28-pin SSOP (10.16 mm × 5.59 mm, 0.635 mm pitch), RoHS-compliant, lead-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Primary power supply input | Accepts 1.71–5.5 V; powers core, flash, SRAM, and digital peripherals - enables direct connection to Li-ion, USB, or industrial 3.3/5 V rails. |
| VSS | Ground reference | Common return for all analog/digital domains; requires low-impedance PCB plane for noise-sensitive mixed-signal operation. |
| XRES | External reset input | Active-low asynchronous reset; debounced internally - used for system-level fault recovery or brown-out coordination. |
| SWDCK / SWDIO | Serial Wire Debug interface | 2-pin debug port supporting programming, breakpoint execution, and memory inspection - eliminates need for JTAG header space. |
| P0[0]–P0[7] | Programmable GPIO bank | Configurable drive strength (0.5–20 mA), slew rate, and pull-up/down - supports 1.8/2.5/3.3/5 V logic levels with voltage-tolerant inputs. |
Key Features
| Feature | Design Value |
|---|---|
| UDB-based digital logic | Four independent 8-macrocell UDBs enable hardware-accelerated custom protocols (e.g., proprietary sensor framing) without external logic ICs. |
| Reconfigurable SCBs | Three serial communication blocks dynamically switch between I²C master/slave, SPI master/slave, or UART modes at runtime - reduces BOM count in multi-interface systems. |
| TCPWM with comparator kill | Four 16-bit timer/counter/PWM units support center-aligned PWM and hardware-triggered shutdown - critical for safe motor gate drive in BLDC controllers. |
| Deep Sleep with GPIO wakeup | Sub-µA retention mode with individual pin interrupt capability - enables wake-on-event sensing (e.g., door open, motion detection) in battery-powered security devices. |
Applications
| Industrial Sensor Node | Smart Lighting Controller |
|---|---|
Use Scenario: Battery-powered environmental monitor collecting temperature, humidity, and CO₂ data every 10 minutes, transmitting via BLE. IC Role / Device Role / Timing Role: Central MCU executing sensor fusion, managing ultra-low-power sleep/wake cycles, and hosting BLE stack timing-critical ISR handlers. Use Value: Deep Sleep current <1.3 µA extends 200 mAh coin cell life beyond 5 years; UDBs offload CRC calculation from CPU, reducing active time per measurement cycle. | Use Scenario: DALI-2 compliant LED driver board controlling brightness, color temperature, and group addressing in commercial office lighting. IC Role / Device Role / Timing Role: DALI physical layer transceiver and application controller with precise 16-bit PWM dimming timing and EMI-robust current sink modulation. Use Value: TCPWM blocks generate jitter-free 1–10 kHz dimming signals; SCBs configure as DALI UART with automatic frame timing compliance per IEC 62386-102. |
| Motor Control Edge Node | Secure Access Terminal |
Use Scenario: Brushless DC motor starter for HVAC blower with overcurrent protection and soft-start ramping. IC Role / Device Role / Timing Role: Real-time motor commutation sequencer using TCPWM-generated hall-effect synchronized PWM, with comparator-triggered emergency shutdown. Use Value: Hardware kill signal disables gate drivers within 100 ns of overcurrent detection - prevents MOSFET failure without software latency. | Use Scenario: Tamper-resistant access panel with capacitive touch keypad, encrypted credential storage, and anti-replay challenge-response authentication. IC Role / Device Role / Timing Role: Secure bootloader host with flash protection, disabled debug interface, and PRGIO-implemented cryptographic state machine for AES-128 key scheduling. Use Value: On-chip programmable logic executes constant-time AES rounds; flash lock bits prevent unauthorized firmware extraction during physical probing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable SoC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY8C4247LQI-DS400 | Same PSoC 4200DS family; 128 kB flash, 16 kB SRAM, identical UDB/SCB count - larger memory footprint. | Required when firmware exceeds 64 kB or needs dual-bank OTA updates with rollback support. | Select for future-proofing firmware growth or safety-critical redundancy; same pinout and toolchain compatibility. |
| STM32L432KC | Arm Cortex-M4F @ 80 MHz, 256 kB flash, 64 kB SRAM, no programmable logic - fixed-function peripherals only. | Suitable where analog/digital customization is unnecessary and higher CPU throughput is prioritized over hardware flexibility. | Choose when algorithmic load dominates (e.g., FFT-based vibration analysis); lacks UDBs for protocol offload or custom timing logic. |
Compared with CY8C4246FNI-DS402T, CY8C4247LQI-DS400 offers memory headroom for complex stacks but same logic density, while STM32L432KC trades programmable hardware for raw CPU performance and larger memory - making the CY8C4246FNI-DS402T optimal for mixed-signal adaptability in size- and power-constrained designs.
Availability
CY8C4246FNI-DS402T is available at Aetrix Electronics and suitable for industrial sensor nodes, smart lighting controllers, motor control edge nodes, and secure access terminals requiring stable component supply across multi-year production cycles.
Supply support for CY8C4246FNI-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, specializing in power management, automotive MCUs, and secure connectivity solutions.
This part belongs to the PSoC® 4200DS product line - designed for embedded systems demanding hardware/software co-design flexibility, ultra-low-power operation, and integrated analog-digital programmability in compact industrial and IoT endpoints.
FAQ
Does CY8C4246FNI-DS402T support USB connectivity?
No. The device lacks a USB PHY or dedicated USB controller. Communication is limited to its three SCBs configured as I²C, SPI, or UART. For USB host/device functionality, external bridge ICs (e.g., CP2102N) or migration to PSoC 4 BLE/USB families is required. USB enumeration and descriptor handling are not supported natively.
What development tools are required to program CY8C4246FNI-DS402T?
PSoC Creator IDE (free, Windows-only) is mandatory for schematic-based hardware design and component configuration. Programming requires a MiniProg3 or KitProg2 debugger/programmer connected via SWD. ARM GCC toolchain integration is supported, but PSoC Creator generates startup code, linker scripts, and peripheral initialization automatically.
Can the UDBs implement a CAN bus controller?
No. UDBs lack the dedicated bit-timing logic, arbitration resolution, and error confinement circuitry required for ISO 11898-1 CAN FD compliance. While basic Manchester encoding or custom serial framing is possible, certified CAN physical and data-link layer operation is unsupported. Use dedicated CAN transceivers with SCB-based UART emulation only for non-compliant point-to-point messaging.
Is there factory-trimmed calibration data for the IMO oscillator?
Yes. Trim values for the internal main oscillator (IMO) are stored in nonvolatile memory during final test and automatically applied at power-on. This achieves ±2% frequency accuracy across voltage and temperature ranges. Field recalibration is also supported via API calls to adjust trim registers dynamically for improved long-term stability in precision timing applications.
CY8C4246FNI-DS402T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 25-UFBGA, WLCSP
- Series:
- PSOC™ 4 CY8C42xx - D
- 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, Cap Sense, LCD, LVD, POR, PWM, SmartSense, WDT
- Number of I/O:
- 21
- Program Memory Size:
- 64KB (64K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 8K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.71V ~ 5.5V
- Data Converters:
- A/D 8x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY8C4246FNI-DS402T FAQ
1.How can I place an order for CY8C4246FNI-DS402T through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4246FNI-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 CY8C4246FNI-DS402T reliable?
The price and inventory of CY8C4246FNI-DS402T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4246FNI-DS402T is usually 5 days.
3.What payment methods are accepted for CY8C4246FNI-DS402T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4246FNI-DS402T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4246FNI-DS402T?
CY8C4246FNI-DS402T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4246FNI-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 CY8C4246FNI-DS402T?
For technical support, including CY8C4246FNI-DS402T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4246FNI-DS402T requirements.
6.How does Aetrix verify that CY8C4246FNI-DS402T is sourced from the original manufacturer or authorized distributors?
All CY8C4246FNI-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 CY8C4246FNI-DS402T meets industry standards.
7.What is the process for return or replacement of CY8C4246FNI-DS402T?
All CY8C4246FNI-DS402T units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4246FNI-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 CY8C4246FNI-DS402T part is unused and in its original packaging.
Return procedure for CY8C4246FNI-DS402T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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