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Infineon Technologies CY8C4125AZI-S433
- Part No.:
- CY8C4125AZI-S433
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
CY8C4125AZI-S433.pdf
- Description:
- IC MCU 32BIT 32KB FLASH 48TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
CY8C4125AZI-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 digital current, features three SCB serial interfaces (I²C/SPI/UART), and delivers 12-bit 1-Msps SAR ADC performance for embedded human-interface and sensor-fusion applications.
For engineers reviewing the CY8C4125AZI-S433 datasheet, CY8C4125AZI-S433 pinout, CY8C4125AZI-S433 application, or CY8C4125AZI-S433 equivalent, this device is selected for low-power touch-enabled control systems requiring mixed-signal flexibility, hardware-accelerated capacitive sensing, and field-upgradable firmware in space-constrained industrial and consumer designs.
Technical Context
The device integrates a single-core Arm Cortex-M0+ CPU with tightly coupled flash and SRAM, enabling deterministic real-time execution. Its programmable analog subsystem includes two opamps with Deep Sleep support, a 12-bit SAR ADC with sequencer and averaging, and dual IDACs for CAPSENSE™ or precision biasing - all routed via configurable analog buses.
Digital resources include five TCPWM blocks supporting center-aligned PWM and quadrature decoding, three reconfigurable SCBs, and Smart I/O logic for pre-processing GPIO signals without CPU intervention. Clocking is managed by IMO (±2%), ILO (32 kHz), and WCO (32 kHz crystal) sources, with automatic clock failover and dynamic frequency scaling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M0+, 48 MHz max - enables real-time deterministic control with single-cycle multiply for motor or sensor algorithms. |
| Memory | 64 KB flash + 8 KB SRAM - sufficient for complex CAPSENSE™ firmware, communication stacks, and application logic without external memory. |
| ADC | 12-bit SAR, 1 Msps, differential/single-ended - supports high-resolution analog sensor acquisition with hardware channel sequencing and signal averaging. |
| Capacitive Sensing | Sigma-delta CSD with >5:1 SNR and SmartSense auto-tuning - delivers robust water-tolerant touch detection on up to 36 GPIO pins. |
| Low-Power Mode | Deep Sleep at 2.5 µA system current with active opamps/comparators - enables battery-powered operation for years in wake-on-touch applications. |
| Serial Interfaces | 3 × SCBs, each configurable as I²C/SPI/UART - allows concurrent communication with sensors, displays, and host controllers using shared physical pins. |
| PWM & Timing | 5 × TCPWM blocks with quadrature decode, kill-input triggering, and center-aligned mode - suitable for BLDC motor control and precision timing tasks. |
Pinout & Package
Package: 44-lead TQFP (7 mm × 7 mm, 0.8 mm pitch), RoHS-compliant, lead-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Core & I/O supply | 1.71–5.5 V input; powers digital logic, analog blocks, and GPIO drivers - supports direct connection to single-cell Li-ion or 3.3/5 V rails. |
| VSS | Digital ground | Primary reference for digital logic and SCB peripherals; must be low-impedance and separated from analog ground where noise-sensitive design is required. |
| P0[0]–P0[7] | Programmable GPIO | Support CAPSENSE™, analog input/output, or digital functions; each pin configurable for drive strength, slew rate, and pull-up/down. |
| P1[0]–P1[7] | Programmable GPIO | Same capabilities as P0; P1[0]/P1[1] default to SWD debug interface (SWDIO/SWCLK) but are reassignable after programming. |
| XRES | Active-low reset | Asynchronous reset input; internal pull-up ensures reliable startup; compatible with external RC or pushbutton reset circuits. |
| XTAL_IN / XTAL_OUT | 32 kHz crystal oscillator | Connects to watch crystal for precise RTC timing; internal load capacitance eliminates need for external caps in most designs. |
Key Features
| Feature | Design Value |
|---|---|
| Reconfigurable Analog Blocks | Two opamps with selectable high-drive external or high-bandwidth internal modes - enable flexible sensor signal conditioning or DAC output buffering without external components. |
| Hardware-Accelerated CAPSENSE™ | Sigma-delta CSD with automatic SmartSense tuning - reduces firmware development time and improves production yield across varying PCB stack-ups and environmental conditions. |
| Programmable Digital Logic | Smart I/O blocks perform Boolean operations on GPIO signals - offload simple state-machine logic from CPU, reducing interrupt latency and power consumption. |
| Flexible Serial Connectivity | Three SCBs independently configurable as I²C, SPI, or UART - eliminate need for multiple dedicated peripheral ICs in multi-interface systems. |
| Low-Power Timing Resources | Five TCPWM blocks with comparator-triggered kill inputs - support safety-critical motor control and fast-response pulse generation without CPU polling. |
Applications
| Home Appliance Control Panel | Industrial HMI Touch Interface |
|---|---|
|
Use Scenario: Capacitive touch buttons and sliders on microwave oven or washing machine control panel exposed to moisture and ESD. IC Role / Device Role / Timing Role: Primary MCU executing CAPSENSE™ firmware, managing display backlight PWM, and communicating with main controller via UART. Use Value: >5:1 SNR and water tolerance ensure reliable touch detection under condensation; Deep Sleep mode extends battery backup life during standby. |
Use Scenario: Ruggedized operator terminal with glove-friendly touch overlay in factory automation environment. IC Role / Device Role / Timing Role: Local touch processor interfacing with PLC via RS-485 (via SCB + transceiver), driving segmented LCD, and monitoring temperature sensor. Use Value: Programmable GPIO drive strength accommodates long traces and noisy environments; hardware sequencer enables synchronized multi-channel sensor reads. |
| Smart Thermostat Node | Wireless Sensor Hub |
|
Use Scenario: Battery-powered HVAC thermostat with ambient light, temperature, and occupancy sensing. IC Role / Device Role / Timing Role: System-on-chip handling CAPSENSE™ touch, 12-bit ADC for thermistor readings, and PWM fan control - no external analog front-end needed. Use Value: Integrated opamps buffer high-impedance sensor signals; 2.5 µA Deep Sleep current enables >5-year coin-cell operation with periodic wake-ups. |
Use Scenario: BLE/Wi-Fi gateway aggregating data from multiple analog and digital sensors in building management. IC Role / Device Role / Timing Role: Sensor fusion hub performing local preprocessing (averaging, filtering, event detection) before wireless transmission. Use Value: Reconfigurable SCBs allow simultaneous I²C (for temp/humidity sensors) and SPI (for pressure sensor), while TCPWM generates precise timing for sensor sampling windows. |
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 |
|---|---|---|---|
| CY8C4025LQI-S402 | Lower memory (32 KB flash / 4 KB SRAM), no WCO, 32-QFN package - lacks crystal oscillator and reduced GPIO count. | Suitable only for simpler touch-only applications without RTC or high-channel-count sensing. | Select when cost and board area are critical and full CAPSENSE™+RTC+communication capability is unnecessary. |
| STM32G031F8P6 | Arm Cortex-M0+, 64 MHz, 64 KB flash, but no integrated CAPSENSE™ or programmable analog - requires external touch controller and opamp circuitry. | Requires additional BOM components for capacitive sensing and analog signal conditioning, increasing layout complexity and validation effort. | Choose only if existing STM32 toolchain familiarity outweighs the added design overhead and component count increase. |
Compared with CY8C4025LQI-S402, CY8C4125AZI-S433 provides full RTC support and higher memory headroom; versus STM32G031F8P6, it eliminates external analog components and delivers out-of-box water-tolerant touch - reducing total system cost and time-to-market for touch-centric designs.
Availability
CY8C4125AZI-S433 is available at Aetrix Electronics and suitable for industrial HMI, smart home control panels, and battery-powered sensor nodes requiring stable component supply, long-term lifecycle assurance, and consistent parametric performance across manufacturing lots.
Supply support for CY8C4125AZI-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 MCUs, and secure connectivity solutions, with global manufacturing and quality certification to ISO 9001 and IATF 16949.
CY8C4125AZI-S433 belongs to the PSoC™ 4100S family - designed specifically for cost-sensitive, low-power embedded systems requiring integrated capacitive sensing, flexible analog signal chains, and rapid prototyping via ModusToolbox™ or PSoC™ Creator.
FAQ
Does CY8C4125AZI-S433 support USB connectivity?
No, CY8C4125AZI-S433 does not include a USB PHY or USB controller. It relies on its three SCB modules for I²C, SPI, or UART communication. For USB host or device functionality, an external USB-to-UART bridge (e.g., CP2102) or companion MCU with USB support is required.
What debug interface does CY8C4125AZI-S433 use?
CY8C4125AZI-S433 uses the 2-pin SWD (Serial Wire Debug) interface, accessible via P1[0] (SWDIO) and P1[1] (SWCLK). These pins are multiplexed and can be reassigned after programming, but require dedicated SWD header access during development and firmware updates.
Can the internal opamps drive external loads directly?
Yes - the two continuous-time opamps support high-drive external mode with up to ±25 mA output current and rail-to-rail swing, enabling direct driving of small solenoids, LEDs, or analog multiplexers without external buffers, provided supply voltage and thermal limits are observed.
Is CAPSENSE™ firmware included with the part?
Yes - Infineon provides free, production-ready CAPSENSE™ Component software within ModusToolbox™ and PSoC™ Creator. This includes SmartSense auto-tuning, baseline tracking, and noise rejection algorithms - no custom firmware development is required to deploy robust touch functionality.
CY8C4125AZI-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 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:
CY8C4125AZI-S433 FAQ
1.How can I place an order for CY8C4125AZI-S433 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4125AZI-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 CY8C4125AZI-S433 reliable?
The price and inventory of CY8C4125AZI-S433 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4125AZI-S433 is usually 5 days.
3.What payment methods are accepted for CY8C4125AZI-S433?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4125AZI-S433 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4125AZI-S433?
CY8C4125AZI-S433 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4125AZI-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 CY8C4125AZI-S433?
For technical support, including CY8C4125AZI-S433 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4125AZI-S433 requirements.
6.How does Aetrix verify that CY8C4125AZI-S433 is sourced from the original manufacturer or authorized distributors?
All CY8C4125AZI-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 CY8C4125AZI-S433 meets industry standards.
7.What is the process for return or replacement of CY8C4125AZI-S433?
All CY8C4125AZI-S433 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4125AZI-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 CY8C4125AZI-S433 part is unused and in its original packaging.
Return procedure for CY8C4125AZI-S433:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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