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Infineon Technologies CY8C4125FNI-483T
- Part No.:
- CY8C4125FNI-483T
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 35-UFBGA, WLCSP
- Datasheet:
-
CY8C4125FNI-483T.pdf
- Description:
- IC MCU 32BIT 32KB FLASH 35WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:3,792
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Product details
Overview
CY8C4125FNI-483T from Infineon Technologies (formerly Cypress) is a 32-bit Arm® Cortex®-M0 programmable system-on-chip (PSoC® 4100 family) featuring 24 MHz CPU, 32 kB flash, 4 kB SRAM, 12-bit 806 ksps SAR ADC, two opamps with comparator mode, and capacitive sensing (CapSense®). It operates from 1.71 V to 5.5 V and supports Deep Sleep mode with 20 nA current, targeting embedded human-interface and sensor-fused control applications.
For engineers reviewing the CY8C4125FNI-483T datasheet, CY8C4125FNI-483T pinout, CY8C4125FNI-483T application, or CY8C4125FNI-483T equivalent, key selection criteria include integrated CapSense sigma-delta architecture with >5:1 SNR, reconfigurable SCB blocks for I²C/SPI/UART, TCPWM blocks with comparator-triggered kill signals, and WLCSP-35 package compatibility with automatic hardware tuning (SmartSense™).
Technical Context
The device integrates a single-layer AHB-Lite bus interconnect linking the Cortex-M0 core, SRAM, flash with read accelerator, and programmable analog/digital peripherals. Its clock system combines IMO (24 MHz), ILO (100 kHz), and external clock support with glitch-free switching and metastability prevention.
Analog subsystem includes two CTBm (Capacitive Touch Block) opamps supporting ADC input buffering, comparator operation, and high-drive external output; digital subsystem features four 16-bit TCPWM blocks with center-aligned, edge-aligned, and pseudo-random PWM modes plus comparator-based kill signal triggering for motor control safety.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M0, 24 MHz max, single-cycle 32-bit multiply - enables deterministic real-time control and binary upward compatibility with Cortex-M3/M4. |
| Memory | 32 kB flash (with read accelerator), 4 kB SRAM - supports firmware storage with zero-wait-state execution at full speed and data retention in Hibernate mode. |
| ADC | 12-bit SAR, 806 ksps, differential/single-ended, channel sequencer with signal averaging - delivers high-resolution sensor acquisition with noise reduction for industrial analog front-ends. |
| CapSense | CapSense Sigma-Delta (CSD) with >5:1 SNR and water tolerance - enables robust touch-button/slider implementation without external components or shielding. |
| Power Modes | Stop (20 nA), Deep Sleep, Hibernate, Sleep - allows ultra-low-power wake-on-GPIO while retaining SRAM and register state for rapid resume. |
| SCBs | Two serial communication blocks, runtime-reconfigurable as I²C/SPI/UART - eliminates need for discrete protocol ICs and supports mixed-protocol peripheral interfacing on same pins. |
| TCPWM | Four 16-bit timer/counter/PWM blocks with comparator-triggered kill signals - provides hardware-synchronized fault response for motor gate drivers and power converters. |
Pinout & Package
Package: 35-ball Wafer-Level Chip Scale Package (WLCSP), 0.5 mm pitch, 2.79 mm × 2.79 mm footprint, bottom-side solder balls, designed for space-constrained portable and wearable systems.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Main power supply | Accepts 1.71–5.5 V; powers digital logic, analog blocks, and I/O; requires local decoupling per datasheet layout guidelines. |
| VSS | Ground reference | Digital and analog ground common point; must be connected to low-impedance PCB plane for CapSense and ADC integrity. |
| P0[0]–P0[7] | Programmable GPIO | Support CapSense, LCD segment/common, analog input/output, or digital interface; configurable drive strength/slew rate. |
| P1[0]–P1[7] | Programmable GPIO | Same capabilities as P0; P1[0]/P1[1] default as SWD debug interface (SWDIO/SWCLK) unless remapped. |
| P2[0]–P2[7] | Programmable GPIO | Includes dedicated CapSense CSD inputs; supports high-frequency switching for PWM outputs and analog routing to CTBm blocks. |
| P3[0]–P3[7] | Programmable GPIO | Supports LCD drive in Deep Sleep; includes LP comparator inputs and IDAC outputs for capacitive sensing calibration. |
| XRES | External reset input | Active-low asynchronous reset; internal pull-up enabled; can be disabled in firmware for lowest leakage in Stop mode. |
| SWDIO/SWCLK | Debug interface | Two-pin Serial Wire Debug (SWD) for programming and full-chip debugging; can be disabled permanently for security-critical applications. |
Key Features
| Feature | Design Value |
|---|---|
| SmartSense™ Auto-Tuning | Hardware-accelerated CapSense calibration that dynamically adjusts sensor parameters without host CPU intervention, reducing firmware overhead and improving field reliability. |
| Reconfigurable SCBs | Each SCB independently supports I²C master/slave, SPI master/slave, or UART TX/RX - enables flexible peripheral expansion using only two pins per interface without changing BOM. |
| CTBm Opamp Flexibility | Each opamp supports high-bandwidth internal drive (for ADC buffering), high-drive external output (for sensor excitation), and comparator mode with hysteresis - reduces need for external signal-conditioning components. |
| Flash Protection Modes | Three levels: Open (debug enabled), Protected (debug disabled, flash erasable), Kill (irreversible debug + flash lock) - meets secure boot and IP protection requirements for certified industrial devices. |
| Deep Sleep LCD Drive | LCD segments and commons remain active with 4 bits/pin memory retained during Deep Sleep - enables persistent display updates with sub-μA system power for battery-powered instrumentation. |
Applications
| Touch-Controlled Home Appliance Interface | Industrial Sensor Node with Local Signal Processing |
|---|---|
Use Scenario: Microwave oven or washing machine control panel with waterproof touch buttons and sliders operating in humid environments. IC Role / Device Role / Timing Role: Primary MCU executing CapSense scanning, user interface logic, and appliance motor timing via TCPWM kill signals. Use Value: Eliminates mechanical switches and overlay shielding; leverages >5:1 SNR and water tolerance to maintain functionality under condensation or splashing. | Use Scenario: Wireless temperature/humidity node with local analog conditioning, ADC oversampling, and SPI-connected transceiver. IC Role / Device Role / Timing Role: Sensor fusion controller performing real-time ADC averaging, opamp-based signal conditioning, and SPI packet framing before RF transmission. Use Value: Integrates 12-bit ADC, dual opamps, and reconfigurable SCB into one die - reduces component count and PCB area versus discrete analog + MCU solution. |
| Portable Medical Device with Low-Power Display | Motor Control Module for Small BLDC Fan |
Use Scenario: Handheld pulse oximeter requiring persistent segmented LCD readout and battery life >100 hours on coin cell. IC Role / Device Role / Timing Role: System-on-chip managing optical sensor interface, LED drive timing, and Deep Sleep LCD refresh at 1 Hz. Use Value: Uses Deep Sleep LCD drive with 4-bit memory retention and 20 nA Stop mode - extends battery life without external display controller or RAM. | Use Scenario: Compact fan module with overcurrent protection, RPM feedback, and closed-loop speed regulation. IC Role / Device Role / Timing Role: Motor timing controller generating three-phase PWM, monitoring current sense via ADC, and triggering hardware kill on comparator threshold breach. Use Value: Comparator-triggered TCPWM kill signal ensures <1 μs fault response - prevents MOSFET shoot-through without software latency or external protection IC. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable mixed-signal microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY8C4025FNI-483T | Same WLCSP-35 package and core, but reduced memory: 16 kB flash, 2 kB SRAM, no CapSense CSD block. | Lacks CapSense sigma-delta engine and SmartSense - unsuitable for touch interfaces; limited to basic sensor polling or GPIO control. | Select when CapSense and high-resolution ADC are unnecessary and BOM cost reduction outweighs firmware scalability needs. |
| CY8C4247FNI-483T | Same package, higher memory (64 kB flash, 8 kB SRAM), adds USBFS block and enhanced CapSense (CSA), but no LCD drive capability. | Supports USB HID-class touch devices and higher-fidelity sensor processing; lacks Deep Sleep LCD drive for persistent display. | Select for USB-connected human-interface devices requiring larger firmware or higher SNR CapSense, where LCD is not required. |
Compared with CY8C4125FNI-483T, CY8C4025FNI-483T trades CapSense and memory for lower unit cost, while CY8C4247FNI-483T adds USB and memory at the expense of LCD functionality - making CY8C4125FNI-483T optimal for space-constrained, touch-enabled, display-integrated embedded controllers.
Availability
CY8C4125FNI-483T is available at Aetrix Electronics and suitable for touch-control interfaces, portable medical instrumentation, industrial sensor nodes, and motor control modules requiring stable component supply across extended temperature ranges (–40 °C to +105 °C).
Supply support for CY8C4125FNI-483T 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 systems, sensors, microcontrollers, and security solutions for automotive, industrial, and IoT markets.
This part belongs to the PSoC® 4100 family - a mixed-signal programmable SoC platform designed specifically for cost-sensitive, space-constrained embedded systems requiring integrated analog front-ends, capacitive sensing, and low-power operation without external signal conditioning.
FAQ
Does CY8C4125FNI-483T support USB connectivity?
No. This device does not include a USBFS (USB Full-Speed) block. USB functionality is available only in higher-tier PSoC 4200-series parts such as CY8C4247FNI-483T. The CY8C4125FNI-483T relies on its two SCBs for I²C, SPI, or UART communication with external USB bridge ICs if needed.
What is the maximum operating frequency of the internal main oscillator (IMO)?
The IMO is factory-trimmed to 24 MHz with ±2% accuracy over voltage and temperature. It serves as the primary clock source for the CPU and most peripherals; frequency can be divided or multiplied using the clock configuration registers, but the base IMO output is fixed at 24 MHz.
Can the CapSense functionality operate in Deep Sleep mode?
Yes. CapSense scanning can run autonomously in Deep Sleep mode using the low-power comparator and IDACs, with results stored in dedicated registers. Wakeup occurs only upon detection of a touch event, enabling ultra-low average power consumption in battery-powered touch interfaces.
Is the WLCSP-35 package RoHS and REACH compliant?
Yes. The CY8C4125FNI-483T in 35-ball WLCSP packaging meets RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006 requirements, with lead-free solder ball composition and halogen-free molding compound as specified in Infineon's official product change notifications.
CY8C4125FNI-483T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 35-UFBGA, WLCSP
- Series:
- PSOC™ 4 CY8C4100
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M0
- Core Size:
- 32-Bit Single-Core
- Speed:
- 24MHz
- 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:
- 31
- 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:
CY8C4125FNI-483T FAQ
1.How can I place an order for CY8C4125FNI-483T through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4125FNI-483T 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 CY8C4125FNI-483T reliable?
The price and inventory of CY8C4125FNI-483T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4125FNI-483T is usually 5 days.
3.What payment methods are accepted for CY8C4125FNI-483T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4125FNI-483T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4125FNI-483T?
CY8C4125FNI-483T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4125FNI-483T 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 CY8C4125FNI-483T?
For technical support, including CY8C4125FNI-483T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4125FNI-483T requirements.
6.How does Aetrix verify that CY8C4125FNI-483T is sourced from the original manufacturer or authorized distributors?
All CY8C4125FNI-483T 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 CY8C4125FNI-483T meets industry standards.
7.What is the process for return or replacement of CY8C4125FNI-483T?
All CY8C4125FNI-483T units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4125FNI-483T, 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 CY8C4125FNI-483T part is unused and in its original packaging.
Return procedure for CY8C4125FNI-483T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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