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Infineon Technologies CY8C4125AZQ-S433
- Part No.:
- CY8C4125AZQ-S433
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
CY8C4125AZQ-S433.pdf
- Description:
- IC MCU 32BIT 32KB FLASH 48TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,834
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Product details
Overview
CY8C4125AZQ-S433 from Infineon is a programmable 32-bit Arm® Cortex®-M0+ microcontroller with 48 MHz CPU, 64 KB flash, 8 KB SRAM, integrated CAPSENSE™ capacitive sensing, and reconfigurable analog/digital blocks. It supports deep-sleep operation at 2.5 µA, features three reconfigurable serial communication blocks (I²C/SPI/UART), and delivers high-SNR touch performance for human interface applications in industrial HMI and consumer electronics.
For engineers reviewing the CY8C4125AZQ-S433 datasheet, CY8C4125AZQ-S433 pinout, CY8C4125AZQ-S433 application, or CY8C4125AZQ-S433 equivalent, this page provides verified technical context, package mapping to 48-lead TQFP, confirmed GPIO count (36), real-world timing/performance specs, and validated alternative parts for PSoC™ 4100S-based designs.
Technical Context
The device integrates a single-cycle multiply Arm® Cortex®-M0+ core with dedicated hardware acceleration for CAPSENSE™ sigma-delta conversion and SmartSense™ auto-tuning. Its analog subsystem includes two continuous-time opamps operating in Deep Sleep, a 12-bit 1-Msps SAR ADC with channel sequencer, and dual IDACs supporting both general-purpose and capacitive sensing on any GPIO.
Digital resources include five TCPWM blocks with quadrature decode and comparator-triggered kill signals, three SCBs configurable as I²C/SPI/UART, and programmable logic blocks enabling Boolean operations directly on port signals-enabling system-level reconfiguration without firmware changes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm® Cortex®-M0+ @ 48 MHz with single-cycle multiply - enables deterministic real-time control and efficient signal processing in resource-constrained embedded systems. |
| Memory | 64 KB flash + 8 KB SRAM - sufficient for complex CAPSENSE™ firmware, communication stacks, and application logic without external memory. |
| Analog Performance | 12-bit 1-Msps SAR ADC with differential input and signal averaging - supports precision sensor acquisition and noise-immune measurement in noisy environments. |
| Capacitive Sensing | CAPSENSE™ sigma-delta with >5:1 SNR and water tolerance - enables reliable touch buttons/sliders in wet or contaminated industrial and appliance interfaces. |
| Low-Power Operation | 2.5 µA Deep Sleep current with operational analog - allows battery-powered devices to maintain touch wake-up capability for months on coin-cell power. |
| GPIO Flexibility | 36 programmable pins with CAPSENSE™, analog, or digital roles - eliminates need for external routing logic and simplifies PCB layout for multi-function I/O. |
| Communication | Three run-time reconfigurable SCBs - permits dynamic switching between I²C, SPI, and UART protocols to adapt to varying peripheral requirements. |
Pinout & Package
This device is packaged in a 48-lead TQFP (7 mm × 7 mm, 0.5 mm pitch) with exposed thermal pad. Pin functions are fully reconfigurable via firmware, and all GPIOs support CAPSENSE™, analog, or digital modes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Core & I/O Power Supply | 1.71–5.5 V input; powers digital logic, analog blocks, and GPIO drivers - supports direct connection to common system rails. |
| GND | Ground Reference | Primary analog/digital return path; requires low-impedance connection to minimize noise coupling into sensitive analog circuits. |
| XRES | Active-Low Reset Input | Asynchronous reset pin with internal pull-up; initiates full system reset when asserted - used for external watchdog or manual recovery. |
| SWDCLK / SWDIO | Debug Interface Signals | Two-pin Serial Wire Debug interface - enables programming, real-time debugging, and trace without dedicated JTAG pins. |
| P0[0]–P0[7], P1[0]–P1[7], P2[0]–P2[7], P3[0]–P3[7], P4[0]–P4[3] | Programmable GPIO | 36 total pins; each supports CAPSENSE™ electrode, analog input/output, digital logic, or LCD segment drive - no fixed function assignment. |
Key Features
| Feature | Design Value |
|---|---|
| SmartSense™ Auto-Tuning | Hardware-accelerated calibration of CAPSENSE™ parameters - eliminates manual tuning effort and ensures consistent touch response across temperature/humidity variations. |
| Deep Sleep Analog Operation | Opamps and comparators remain active at 2.5 µA system current - enables always-on capacitive wake-up without sacrificing battery life. |
| Reconfigurable SCBs | Three independent serial blocks dynamically switch between I²C, SPI, and UART - reduces BOM count and simplifies firmware updates for multi-peripheral systems. |
| Programmable TCPWM | Five 16-bit timer/counter/PWM units with center-aligned, edge-aligned, and pseudo-random modes - supports motor control, LED dimming, and encoder interfacing in one peripheral. |
| Flexible GPIO Drive | Configurable drive strength, slew rate, and output mode per pin - allows optimization for EMI reduction, signal integrity, or power efficiency in mixed-signal layouts. |
Applications
| Industrial HMI Panels | Smart Home Appliances |
|---|---|
|
Use Scenario: Touch-enabled control panels for PLCs, HMIs, and factory-floor displays operating in electrically noisy environments. IC Role / Device Role / Timing Role: Main controller handling CAPSENSE™ button/slider inputs, driving segmented LCD, and managing Modbus RTU over UART. Use Value: Integrated sigma-delta CAPSENSE™ with >5:1 SNR rejects EMI from nearby motors and drives - eliminating false touches without shielding or filtering. |
Use Scenario: Touch-sensitive cooktops, ovens, and washing machines requiring water-tolerant user interfaces. IC Role / Device Role / Timing Role: Dedicated CAPSENSE™ processor with SmartSense™ auto-calibration and deep-sleep wake-on-touch functionality. Use Value: Hardware-based water tolerance and automatic recalibration ensure reliable operation even with condensation or splashes - no firmware intervention required. |
| Wearable Health Monitors | IoT Edge Sensor Nodes |
|
Use Scenario: Battery-powered pulse oximeters and activity trackers with capacitive gesture controls and analog sensor front-ends. IC Role / Device Role / Timing Role: Low-power MCU managing optical sensor ADC sampling, gesture recognition, and Bluetooth LE data transmission. Use Value: 2.5 µA Deep Sleep with active opamps enables continuous capacitive wake detection - extending coin-cell battery life to >12 months. |
Use Scenario: Wireless environmental sensors (temp/humidity/pressure) deployed in remote locations with intermittent power. IC Role / Device Role / Timing Role: System-on-chip integrating sensor signal conditioning (SAR ADC + opamp), CAPSENSE™ configuration buttons, and SPI-to-LoRaWAN gateway interface. Use Value: Single-chip integration of analog, digital, and communication functions reduces component count by 40% versus discrete MCU + analog front-end solutions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY8C4126AZQ-S433 | Same package and pinout; adds 2 KB additional SRAM and 16 KB extra flash - identical peripherals and clock architecture. | Suitable for firmware-intensive applications requiring larger code/data buffers, e.g., BLE stack coexistence or advanced CAPSENSE™ algorithms. | Select when memory headroom is critical; no PCB or firmware changes needed beyond linker script update. |
| CY8C4025AZQ-S412 | Lower-cost variant: 32 KB flash, 4 KB SRAM, no CAPSENSE™ sigma-delta block - retains same M0+ core, SCBs, and TCPWM. | Targeted at cost-sensitive non-touch applications such as simple motor control or basic sensor nodes where capacitive sensing is unnecessary. | Choose for budget-constrained designs without touch requirements; not a drop-in replacement due to missing CAPSENSE™ hardware. |
Compared with CY8C4125AZQ-S433, CY8C4126AZQ-S433 offers scalable memory without architectural change, while CY8C4025AZQ-S412 removes CAPSENSE™ to reduce cost - enabling precise trade-offs between feature set, memory, and bill-of-materials.
Availability
CY8C4125AZQ-S433 is available at Aetrix Electronics and suitable for industrial HMI, smart appliance interfaces, and wearable health monitors requiring stable component supply, long-term lifecycle assurance, and qualified production lots.
Supply support for CY8C4125AZQ-S433 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, automotive ICs, and programmable embedded controllers.
CY8C4125AZQ-S433 belongs to the PSoC™ 4100S family - designed specifically for cost-effective, low-power human interface applications combining capacitive touch, analog sensing, and flexible digital control in a single chip.
FAQ
What development tools support CY8C4125AZQ-S433?
Infineon provides full toolchain support via ModusToolbox™ (multi-platform IDE with CAPSENSE™ Tuner, PDL drivers, and middleware) and legacy PSoC™ Creator. Both enable schematic-based design, automatic peripheral configuration, and debug via SWD interface using standard CMSIS-DAP probes or KitProg3 programmers.
Does CY8C4125AZQ-S433 require external crystals?
No external crystal is mandatory: it includes an internal ±2% IMO for main clock, 32 kHz ILO for low-power timing, and optional 32 kHz WCO for high-accuracy RTC. The WCO is only required if sub-second timekeeping accuracy is needed - otherwise, the IMO suffices for most applications including CAPSENSE™ and communication.
Can all 36 GPIOs be used simultaneously for CAPSENSE™?
Yes - all 36 GPIOs support CAPSENSE™ electrode function, but practical electrode count depends on scan time and SNR requirements. With hardware-accelerated sigma-delta and SmartSense™, up to 24 electrodes can be scanned at >100 Hz with >5:1 SNR in typical layouts; more electrodes increase scan latency and may require firmware optimization.
Is there hardware support for USB connectivity?
No - CY8C4125AZQ-S433 lacks native USB PHY or controller. Communication is limited to UART, I²C, and SPI through its three SCBs. For USB host/device functionality, external bridge ICs (e.g., CP2102N or FT232H) must be used, or upgrade to PSoC™ 4000S/4100S+ families with USBFS support.
CY8C4125AZQ-S433 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 48-LQFP
- Series:
- PSOC™ 4 CY8C4100S
- Packaging:
- Tray
- 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:
- 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 16x10b, 16x12b SAR; D/A 2x7b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY8C4125AZQ-S433 FAQ
1.How can I place an order for CY8C4125AZQ-S433 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4125AZQ-S433 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 CY8C4125AZQ-S433 reliable?
The price and inventory of CY8C4125AZQ-S433 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4125AZQ-S433 is usually 5 days.
3.What payment methods are accepted for CY8C4125AZQ-S433?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4125AZQ-S433 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4125AZQ-S433?
CY8C4125AZQ-S433 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4125AZQ-S433 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 CY8C4125AZQ-S433?
For technical support, including CY8C4125AZQ-S433 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4125AZQ-S433 requirements.
6.How does Aetrix verify that CY8C4125AZQ-S433 is sourced from the original manufacturer or authorized distributors?
All CY8C4125AZQ-S433 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 CY8C4125AZQ-S433 meets industry standards.
7.What is the process for return or replacement of CY8C4125AZQ-S433?
All CY8C4125AZQ-S433 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4125AZQ-S433, 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 CY8C4125AZQ-S433 part is unused and in its original packaging.
Return procedure for CY8C4125AZQ-S433:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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