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Infineon Technologies CY8C4124FNI-S433T
- Part No.:
- CY8C4124FNI-S433T
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 35-XFBGA, WLCSP
- Datasheet:
-
CY8C4124FNI-S433T.pdf
- Description:
- IC MCU 32BIT 16KB FLASH 35WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:1,369
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Product details
Overview
CY8C4124FNI-S433T from Infineon is a programmable 32-bit Arm® Cortex®-M0+ microcontroller with 48 MHz CPU, 32 KB flash, 4 KB SRAM, integrated CAPSENSE™ capacitive sensing, 12-bit 1-Msps SAR ADC, and three reconfigurable serial communication blocks (I²C/SPI/UART). It operates from 1.71 V to 5.5 V and supports deep-sleep mode with 2.5 µA system current, targeting touch-enabled industrial HMI and low-power sensor nodes.
For engineers reviewing the CY8C4124FNI-S433T datasheet, CY8C4124FNI-S433T pinout, CY8C4124FNI-S433T application, or CY8C4124FNI-S433T equivalent, key selection criteria include its dual opamp + comparator analog subsystem, SmartSense auto-tuning for water-tolerant touch, TCPWM-based motor control kill signaling, and GPIO-flexible CAPSENSE™ channel allocation across all 36 pins.
Technical Context
The device integrates a fixed-function Arm® Cortex®-M0+ core with programmable analog (CTB opamps, LPC comparators, SAR ADC) and digital (TCPWM, SCB, PLD) peripherals routed via a configurable interconnect fabric. Its clock system combines ±2% IMO, 32 kHz ILO, and WCO for precision timing in mixed-signal applications.
Analog signal chain flexibility includes opamp modes (high-drive external / high-bandwidth internal), SAR ADC differential input buffering, and sigma-delta CSD with >5:1 SNR. Digital logic is implemented through both fixed-function blocks (e.g., quadrature decoder in TCPWM) and user-defined PLD boolean operations on port signals.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm® Cortex®-M0+ @ 48 MHz with single-cycle multiply - enables real-time control loop execution in <21 ns per instruction. |
| Memory | 32 KB flash (with read accelerator) + 4 KB SRAM - sufficient for firmware with CAPSENSE™ middleware and UART bootloader. |
| Analog Peripherals | Two CTB opamps (deep-sleep capable), two LPC comparators, 12-bit 1-Msps SAR ADC with sequencer - supports simultaneous touch sensing and sensor signal acquisition. |
| Digital Peripherals | Five TCPWM blocks (center-aligned PWM, quadrature decode), three SCBs (reconfigurable I²C/SPI/UART), programmable logic - enables motor control, communication bridging, and custom state machines. |
| Power & Packaging | 1.71–5.5 V operation; 2.5 µA deep-sleep current; 48-pin TQFP (7×7 mm) - suitable for battery-powered devices requiring long runtime and PCB space efficiency. |
| CAPSENSE™ | Sigma-delta CSD with SmartSense auto-tuning and >5:1 SNR - delivers robust touch detection under moisture, eliminating manual calibration effort. |
| GPIO | 36 programmable pins with configurable drive strength, slew rate, and CAPSENSE™/analog/digital assignment - allows full peripheral mapping without external muxing. |
Pinout & Package
Package: 48-pin TQFP (7×7 mm, 0.5 mm pitch), RoHS-compliant, surface-mount.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Primary power supply | 1.71–5.5 V input; powers digital core, analog blocks, and I/O; requires local 100 nF decoupling. |
| VSS | Ground reference | Digital and analog ground common point; must be low-impedance connection to minimize noise coupling. |
| P0[0]–P0[7] | General-purpose I/O | Support CAPSENSE™, analog input/output, or digital functions; configurable drive modes including strong/high-speed for LCD segment drive. |
| P1[0]–P1[7] | General-purpose I/O | Same capabilities as P0; P1[2]/P1[3] support SWD debug interface; P1[4]/P1[5] support WCO crystal connection. |
| XRES | Active-low reset input | Asynchronous reset pin; internal pull-up; accepts 1.2–5.5 V logic; debounced internally for ESD robustness. |
| SWDCK/SWDIO | Debug interface | Two-pin Serial Wire Debug interface for programming and real-time debugging; compatible with standard Arm® debug probes. |
Key Features
| Feature | Design Value |
|---|---|
| SmartSense auto-tuning | Hardware-accelerated CAPSENSE™ calibration eliminates manual tuning and maintains performance across temperature/humidity drift. |
| Deep-sleep analog retention | Opamps and comparators remain active in Deep Sleep at 2.5 µA system current - enables wake-on-touch with sub-millisecond latency. |
| Reconfigurable SCBs | Three independent serial blocks each support run-time switching between I²C master/slave, SPI master/slave, or UART - reduces BOM count in multi-protocol systems. |
| TCPWM kill input | Comparator-triggered hardware kill signal disables PWM outputs within one clock cycle - critical for safe motor control and overcurrent protection. |
| Programmable PLD | Boolean logic on port inputs/outputs (AND/OR/XOR/INV) implemented in hardware - replaces discrete glue logic and accelerates edge-sensitive event handling. |
Applications
| Industrial HMI Panel | Smart Appliance Control |
|---|---|
|
Use Scenario: Touch-enabled front panel for HVAC controller with ambient light sensing and fan speed regulation. IC Role / Device Role / Timing Role: Main MCU executing CAPSENSE™ touch scan, SAR ADC sampling of thermistor and photodiode, and TCPWM-driven fan motor control. Use Value: Single-chip integration eliminates external touch controller and motor driver ICs; SmartSense ensures reliable touch under condensation. |
Use Scenario: Washing machine control board managing drum motor, water valve, and detergent dispensing via capacitive buttons. IC Role / Device Role / Timing Role: System controller coordinating motor phase sequencing (via TCPWM), solenoid actuation timing, and moisture-resistant UI feedback. Use Value: Deep-sleep wake-on-touch reduces standby power to <3 µA; CSD SNR >5:1 prevents false triggers during wash cycles. |
| Medical Patient Monitor | IoT Sensor Node |
|
Use Scenario: Portable pulse oximeter with OLED display, SpO₂ sensor interface, and USB charging status indication. IC Role / Device Role / Timing Role: Signal acquisition MCU performing synchronized LED drive (IDAC), photodiode amplification (opamp), and SAR ADC conversion. Use Value: Integrated opamps with ADC input buffering enable high-fidelity analog front-end without external amplifiers; 48 MHz CPU handles real-time FFT processing. |
Use Scenario: Battery-powered environmental sensor node measuring temperature, humidity, and air quality with BLE gateway handoff. IC Role / Device Role / Timing Role: Low-power data concentrator acquiring sensor data via I²C, processing with CAPSENSE™-based user interaction, and managing sleep/wake cycles. Use Value: 2.5 µA deep-sleep current extends 2-AA battery life to >2 years; reconfigurable SCBs simplify firmware updates for new sensor protocols. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY8C4124LQI-S433 | Same core/peripherals but in 40-pin QFN package; no WCO pins; 24 KB flash / 4 KB SRAM. | Limited GPIO count (28 vs 36) and no crystal oscillator support - unsuitable for time-critical RTC or low-jitter timing apps. | Select when board space is constrained and crystal-less operation is acceptable. |
| STM32G031F8P6 | Arm® Cortex®-M0+, 64 MHz, 64 KB flash, 8 KB SRAM; no integrated CAPSENSE™; only one 12-bit ADC (1.14 Msps). | Lacks hardware touch engine and analog flexibility - requires external components for robust capacitive UI or multi-channel analog acquisition. | Select when higher CPU speed and memory are prioritized over integrated touch/analog features. |
Compared with CY8C4124LQI-S433, the CY8C4124FNI-S433T adds WCO support and 8 more GPIOs for expanded peripheral routing; versus STM32G031F8P6, it trades raw memory for silicon-integrated CAPSENSE™ and dual opamps-reducing BOM cost and design complexity in touch-centric embedded systems.
Availability
CY8C4124FNI-S433T is available at Aetrix Electronics and suitable for industrial HMI, smart appliance control, medical patient monitors, and IoT sensor nodes requiring stable component supply, long-term lifecycle assurance, and qualified automotive-grade traceability.
Supply support for CY8C4124FNI-S433T 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 German semiconductor manufacturer specializing in power management, sensing, and microcontroller solutions for industrial, automotive, and consumer markets.
The PSoC™ 4100S product line targets cost-sensitive, touch-enabled embedded systems requiring analog flexibility and low-power operation - designed to unify capacitive sensing, motor control, and communication in a single programmable SoC.
FAQ
Does CY8C4124FNI-S433T support USB connectivity?
No, CY8C4124FNI-S433T does not include a USB PHY or controller. It provides three reconfigurable serial communication blocks supporting I²C, SPI, and UART only. For USB host/device functionality, an external USB-to-UART bridge IC or migration to PSoC™ 4 USB-capable variants (e.g., CY8C4045LQI-S412) is required.
What development tools are officially supported for this device?
Infineon officially supports ModusToolbox™ 3.x for CY8C4124FNI-S433T, including the PDL peripheral driver library, CAPSENSE™ Tuner, and BSPs for CY8CKIT-044 and CY8CKIT-149 kits. Legacy PSoC™ Creator 4.4 is also supported but deprecated as of 2023; new designs should use ModusToolbox™.
Can the SAR ADC perform simultaneous sampling on multiple channels?
No, the 12-bit SAR ADC has a single sample-and-hold circuit and performs sequential conversions. However, its hardware channel sequencer supports automatic scanning of up to 32 channels with programmable averaging (2x–64x) per channel - enabling effective pseudo-simultaneous acquisition for slow-varying signals like temperature or battery voltage.
Is the WCO (watch crystal oscillator) mandatory for real-time clock functionality?
No, the WCO is optional. The device can generate accurate RTC timing using the ±2% IMO with periodic calibration against an external time source, or the 32 kHz ILO for lower-accuracy applications. WCO is required only when ±20 ppm accuracy or autonomous long-term timekeeping without software calibration is needed.
CY8C4124FNI-S433T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 35-XFBGA, WLCSP
- Series:
- PSOC™ 4 CY8C4100S
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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:
- 16KB (16K 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 16x10b Slope, 16x12b SAR; D/A 2xIDAC
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY8C4124FNI-S433T FAQ
1.How can I place an order for CY8C4124FNI-S433T through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4124FNI-S433T 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 CY8C4124FNI-S433T reliable?
The price and inventory of CY8C4124FNI-S433T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4124FNI-S433T is usually 5 days.
3.What payment methods are accepted for CY8C4124FNI-S433T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4124FNI-S433T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4124FNI-S433T?
CY8C4124FNI-S433T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4124FNI-S433T 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 CY8C4124FNI-S433T?
For technical support, including CY8C4124FNI-S433T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4124FNI-S433T requirements.
6.How does Aetrix verify that CY8C4124FNI-S433T is sourced from the original manufacturer or authorized distributors?
All CY8C4124FNI-S433T 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 CY8C4124FNI-S433T meets industry standards.
7.What is the process for return or replacement of CY8C4124FNI-S433T?
All CY8C4124FNI-S433T units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4124FNI-S433T, 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 CY8C4124FNI-S433T part is unused and in its original packaging.
Return procedure for CY8C4124FNI-S433T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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