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Infineon Technologies CY8C4125AXI-M445
- Part No.:
- CY8C4125AXI-M445
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
CY8C4125AXI-M445.pdf
- Description:
- IC MCU 32BIT 32KB FLASH 64TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,890
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Product details
Overview
CY8C4125AXI-M445 from Infineon is a PSoC™ 4100M programmable system-on-chip integrating an Arm® Cortex®-M0 CPU (24 MHz), up to 128 kB flash and 16 kB SRAM, four low-power opamps, 12-bit SAR ADC (806 Ksps), and capacitive sensing (CSD) with SmartSense tuning. It serves as a reconfigurable embedded controller for human-interface and sensor-fusion applications in industrial HMI and consumer electronics.
For engineers reviewing the CY8C4125AXI-M445 datasheet, CY8C4125AXI-M445 pinout, CY8C4125AXI-M445 application, or CY8C4125AXI-M445 equivalent, key selection criteria include Deep Sleep current (20 nA), GPIO count (up to 55), analog subsystem flexibility (opamp/IDAC/comparator routing), and integrated CAPSENSE™ with water tolerance.
Technical Context
The device implements a tightly coupled mixed-signal architecture where the Cortex-M0 core controls programmable digital logic (TCPWM, SCB) and analog blocks (opamps, IDACs, comparators) via a configurable interconnect matrix. All analog peripherals operate in Deep Sleep mode, enabling ultra-low-power wake-up sensing.
Its clock system combines IMO (24 MHz), ILO (32.768 kHz), and external crystal support, while the power management unit enables fine-grained control across Stop (20 nA), Hibernate, and Deep Sleep modes - each with distinct wakeup latency and peripheral retention trade-offs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm® Cortex®-M0 @ 24 MHz with single-cycle multiply - enables real-time signal processing without external DSP. |
| Flash Memory | 128 kB with Read Accelerator - supports fast code execution and firmware-over-the-air (FOTA) updates with minimal latency. |
| SRAM | 16 kB - sufficient for dual-buffered sensor data acquisition and real-time control stacks. |
| ADC | 12-bit SAR @ 806 Ksps - delivers high-resolution analog input sampling for precision sensor interfacing. |
| Opamps | 4 units, operational in Deep Sleep at ultra-low current - enables always-on analog front-end monitoring without waking CPU. |
| CAPSENSE™ | Infineon CSD with >5:1 SNR and hardware SmartSense tuning - eliminates manual calibration for robust touch/water-tolerant UI design. |
| GPIO Count | Up to 55 programmable pins - supports simultaneous LCD segment drive, capacitive buttons, analog inputs, and digital interfaces. |
Pinout & Package
This device is offered in a 44-pin TQFP package with 36 usable GPIOs (including dedicated XRES, VDDA, VSSA, SWDIO, SWCLK). Pin functions are fully reconfigurable via PSoC Creator; no fixed-function pin assignment exists.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| XRES | Active-low reset input | Asynchronous hardware reset with internal pull-up; compatible with external pushbutton or supervisor IC. |
| SWDIO / SWCLK | Serial Wire Debug interface | Two-pin debug port supporting programming, real-time trace, and breakpoint debugging without dedicated UART pins. |
| VDDA / VSSA | Analog power supply/ground | Separate analog domain for ADC/opamp reference stability; requires local 100-nF decoupling. |
| P0[0]–P0[7], P1[0]–P1[7], etc. | Programmable GPIO | Each pin supports CAPSENSE™, LCD segment/common, analog input/output, or digital I/O - configured per project in PSoC Creator. |
Key Features
| Feature | Design Value |
|---|---|
| Reconfigurable analog blocks | Four opamps + two comparators + four IDACs - all routable to any GPIO, enabling dynamic analog signal path changes at runtime. |
| Capacitive sensing engine | CSD with automatic hardware tuning (SmartSense) - reduces development time for touch buttons/sliders by eliminating manual parameter optimization. |
| Low-power operation | 20 nA Stop Mode with GPIO wakeup - allows battery-powered devices to achieve multi-year shelf life with periodic sensor polling. |
| Flexible serial interfaces | Four SCBs supporting I²C/SPI/UART concurrently - permits independent communication with multiple sensors, displays, and host controllers without resource contention. |
| LCD direct drive | Segment/Common drive on all GPIOs with 4-bit memory per pin in Deep Sleep - enables persistent display update without CPU intervention. |
Applications
| Industrial HMI Panel | Smart Appliance Control |
|---|---|
Use Scenario: Touch-enabled operator interface on factory equipment with ambient moisture exposure. IC Role / Device Role / Timing Role: Primary system controller executing CAPSENSE™ scan, LCD refresh, and motor control PWM generation. Use Value: CSD's >5:1 SNR and water tolerance ensure reliable button detection under condensation; Deep Sleep mode extends panel uptime between maintenance cycles. | Use Scenario: User interface and sensor hub in refrigerator or washing machine with temperature, door, and touch inputs. IC Role / Device Role / Timing Role: Integrated analog front-end (opamp + ADC) conditions thermistor signals; IDACs enable self-capacitance measurement for proximity sensing. Use Value: Single-chip integration replaces discrete opamp/ADC/microcontroller, reducing BOM count and PCB area by 40% versus legacy designs. |
| Medical Wearable Monitor | IoT Sensor Node |
Use Scenario: Portable pulse oximeter requiring low-power analog signal conditioning and optical sensor interface. IC Role / Device Role / Timing Role: SAR ADC digitizes photodiode current; opamps buffer and amplify weak analog signals before conversion. Use Value: 806 Ksps ADC sampling rate supports high-fidelity PPG waveform capture; 20 nA Stop Mode enables weeks of standby on coin-cell battery. | Use Scenario: Battery-powered environmental sensor node measuring temperature, humidity, and ambient light. IC Role / Device Role / Timing Role: Host MCU managing I²C sensors, driving e-ink display, and performing local edge analytics before wireless transmission. Use Value: Four SCBs allow concurrent I²C (temp/humidity), SPI (light sensor), and UART (BLE module) without software arbitration overhead. |
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-S412 | Lower flash (32 kB), no SAR ADC, reduced GPIO count (28), same Cortex-M0 core and CAPSENSE™ engine. | Suitable for simpler touch-only applications without analog sensor fusion or complex control algorithms. | Select when cost sensitivity outweighs need for ADC or large firmware footprint. |
| STM32G071KBT6 | Higher CPU speed (64 MHz), no integrated CAPSENSE™ or programmable analog; requires external components for touch or precision analog signal chain. | Better suited for deterministic real-time control tasks where analog flexibility is secondary to compute throughput. | Choose when leveraging STM32 ecosystem tools and external touch controller is acceptable. |
Compared with CY8C4125AXI-M445, CY8C4025LQI-S412 sacrifices analog capability and memory for lower cost, while STM32G071KBT6 trades integrated mixed-signal programmability for higher clock speed and broader third-party tool support - making CY8C4125AXI-M445 optimal for rapid, low-power, sensor-rich UI development.
Availability
CY8C4125AXI-M445 is available at Aetrix Electronics and suitable for industrial HMI, smart appliance control, medical wearable monitors, and IoT sensor nodes requiring stable component supply and long-term manufacturability.
Supply support for CY8C4125AXI-M445 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, industrial, and security solutions, with global R&D and manufacturing infrastructure.
The PSoC™ 4100M product line targets cost-sensitive, low-power embedded systems requiring field-programmable analog/digital logic - especially in human-interface, sensor fusion, and industrial control applications.
FAQ
Does CY8C4125AXI-M445 support USB connectivity?
No. This device lacks a USB PHY or dedicated USB controller. Communication is limited to I²C, SPI, UART, and CAN (via SCB reconfiguration only if external transceiver is added). USB functionality requires external bridge IC or migration to PSoC™ 4 BLE or PSoC™ 6 families.
What is the maximum operating temperature for CY8C4125AXI-M445?
The device is rated for extended industrial operation from –40°C to +105°C ambient temperature. This rating applies to the full 44-pin TQFP package variant (AXI suffix) and is validated per Infineon's thermal characterization testing in accordance with JEDEC JESD22-A104.
Can the SAR ADC perform simultaneous sampling on multiple channels?
No. The 12-bit SAR ADC has a single sample-and-hold circuit and supports sequential channel scanning only. True simultaneous sampling requires external parallel ADCs or migration to PSoC™ 6 devices with dual ADCs and hardware synchronization.
Is PSoC™ Creator still actively supported for this part?
Yes. Infineon continues to provide PSoC™ Creator 4.4 (latest stable release) with full component libraries, device packs, and CAPSENSE™ Tuner support for CY8C4125AXI-M445. While ModusToolbox™ is now Infineon's strategic IDE, Creator remains the recommended tool for legacy PSoC™ 4 projects.
CY8C4125AXI-M445 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 64-LQFP
- Series:
- PSOC™ 4 CY8C41xx - M
- 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:
- 51
- 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 16x12b SAR; 2xIDAC
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY8C4125AXI-M445 FAQ
1.How can I place an order for CY8C4125AXI-M445 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4125AXI-M445 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 CY8C4125AXI-M445 reliable?
The price and inventory of CY8C4125AXI-M445 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4125AXI-M445 is usually 5 days.
3.What payment methods are accepted for CY8C4125AXI-M445?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4125AXI-M445 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4125AXI-M445?
CY8C4125AXI-M445 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4125AXI-M445 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 CY8C4125AXI-M445?
For technical support, including CY8C4125AXI-M445 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4125AXI-M445 requirements.
6.How does Aetrix verify that CY8C4125AXI-M445 is sourced from the original manufacturer or authorized distributors?
All CY8C4125AXI-M445 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 CY8C4125AXI-M445 meets industry standards.
7.What is the process for return or replacement of CY8C4125AXI-M445?
All CY8C4125AXI-M445 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4125AXI-M445, 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 CY8C4125AXI-M445 part is unused and in its original packaging.
Return procedure for CY8C4125AXI-M445:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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