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Infineon Technologies CY8C4125AXI-M445T
- Part No.:
- CY8C4125AXI-M445T
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
CY8C4125AXI-M445T.pdf
- Description:
- IC MCU 32BIT 32KB FLASH 64TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,500
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Product details
Overview
CY8C4125AXI-M445T from Infineon is a PSoC™ 4100M-series programmable system-on-chip integrating an Arm® Cortex®-M0 CPU (24 MHz), up to 128 kB flash, 16 kB SRAM, four low-power opamps, and a 12-bit SAR ADC (806 kSPS). It supports capacitive sensing (CSD) with >5:1 SNR, segment LCD drive, and reconfigurable serial communication blocks (SCB) for I²C/SPI/UART - deployed in industrial HMI touch panels requiring robust water-tolerant sensing and deep-sleep operation.
For engineers reviewing the CY8C4125AXI-M445T datasheet, CY8C4125AXI-M445T pinout, CY8C4125AXI-M445T application, or CY8C4125AXI-M445T equivalent, key selection criteria include Deep Sleep current (20 nA), TCPWM flexibility (eight 16-bit blocks), CAPSENSE™ SmartSense auto-tuning, GPIO reconfigurability (up to 55 pins), and –40°C to +105°C extended temperature rating.
Technical Context
The device implements a tightly coupled mixed-signal architecture where the Cortex-M0 core orchestrates programmable analog (opamps, IDACs, comparators) and digital (TCPWM, SCB, UDB) resources via configurable interconnect. All opamps and comparators operate in Deep Sleep mode, enabling always-on sensing without wake-up latency.
Its clock system integrates IMO (24 MHz), ILO (32.768 kHz), and external crystal support; power management includes Stop Mode (20 nA), Hibernate, and Deep Sleep with GPIO wakeup - optimized for battery-powered industrial controls requiring sub-μA retention and fast (<5 μs) wake-from-sleep response.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm® Cortex®-M0 @ 24 MHz with single-cycle multiply - enables real-time control loop execution in motor drives and sensor fusion. |
| Memory | 128 kB flash + 16 kB SRAM - sufficient for firmware with CAPSENSE™ library, LCD driver, and communication stacks. |
| ADC | 12-bit SAR ADC @ 806 kSPS - supports high-speed analog monitoring (e.g., current sensing in power supplies). |
| Capacitive Sensing | CSD engine with >5:1 SNR and hardware SmartSense tuning - delivers reliable touch detection under moisture or EMI stress. |
| Low-Power Modes | 20 nA Stop Mode with GPIO wakeup - extends battery life in portable HMIs and remote sensors. |
| GPIO | Up to 55 programmable pins with configurable drive strength, slew rate, and analog/digital/CAPSENSE™/LCD roles - eliminates external level shifters or routing logic. |
| Temperature Range | –40°C to +105°C - qualified for industrial automation, motor controllers, and automotive cabin modules. |
Pinout & Package
This device is housed in a 44-pin TQFP package (10 mm × 10 mm, 0.8 mm pitch) with exposed thermal pad. Pin functions are fully reconfigurable via PSoC Creator; no fixed peripheral-to-pin mapping exists at silicon level.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Supports 1.71–5.5 V operation; decoupling required per Infineon layout guidelines for noise immunity. |
| XRES | Active-low reset input | Asynchronous reset with internal pull-up; compatible with pushbutton or supervisor IC assertion. |
| SWDCLK / SWDIO | Serial Wire Debug interface | Two-pin debug port enabling programming, trace, and real-time register inspection without dedicated JTAG pins. |
| P0[0]–P0[7], P1[0]–P1[7], etc. | Programmable GPIO bank terminals | Each pin supports CAPSENSE™, analog input/output, LCD segment/common, or digital logic - assigned dynamically in firmware. |
Key Features
| Feature | Design Value |
|---|---|
| Reconfigurable SCBs | Four independent serial blocks supporting runtime-switched I²C/SPI/UART - reduces BOM count by eliminating protocol-specific transceivers. |
| Deep Sleep Analog | Opamps and comparators remain active at 20 nA system current - enables continuous proximity or button monitoring without CPU intervention. |
| Hardware LCD Drive | Direct segment/common drive on all GPIOs with 4-bit memory per pin in Deep Sleep - eliminates external LCD controller in cost-sensitive displays. |
| TCPWM Flexibility | Eight 16-bit timer/counter/PWM units with center-aligned, edge-aligned, and pseudo-random modes - supports motor FOC, LED dimming, and encoder counting in one chip. |
| CAPSENSE™ SmartSense | Automatic hardware-based tuning of CSD parameters - removes manual calibration effort and improves production yield across environmental variations. |
Applications
| Industrial HMI Touch Panel | Smart Thermostat Interface |
|---|---|
|
Use Scenario: Wall-mounted HVAC control panel with waterproof capacitive buttons and segmented LCD display operating in unconditioned environments. IC Role / Device Role / Timing Role: Main system controller handling CAPSENSE™ touch acquisition, LCD refresh, temperature sensor reading, and HVAC actuator PWM generation. Use Value: Single-chip integration eliminates discrete opamps, ADC, and LCD driver; Deep Sleep mode extends battery backup life beyond 5 years. |
Use Scenario: Battery-powered residential thermostat with ambient light-adaptive display and multi-zone relay control. IC Role / Device Role / Timing Role: System-on-chip managing ambient temperature/humidity sensing, capacitive touch UI, 7-segment LCD, and timed relay switching. Use Value: 20 nA Stop Mode enables 10+ year coin-cell operation; programmable GPIOs reduce PCB layer count by consolidating signal conditioning paths. |
| Programmable Logic Controller (PLC) I/O Module | Motor Control Feedback Unit |
|
Use Scenario: DIN-rail mounted PLC expansion module with analog input, digital I/O, and isolated CAN communication (via external transceiver). IC Role / Device Role / Timing Role: Local intelligence node performing analog signal conditioning (opamp buffering), digital debounce, and local alarm logic before CAN transmission. Use Value: On-chip opamps eliminate external instrumentation amps; reconfigurable SCB allows field-upgradable communication protocols (Modbus RTU over UART or ASCII over RS-485). |
Use Scenario: Compact BLDC motor feedback board measuring hall-effect signals, phase current (shunt + ADC), and generating PWM gate drive timing. IC Role / Device Role / Timing Role: Real-time motor controller executing commutation logic, current regulation, and fault protection using TCPWM kill signals triggered by comparator thresholds. Use Value: Comparator-based hardware kill signal ensures <100 ns response to overcurrent - critical for IGBT/MOSFET safety without software latency. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable mixed-signal MCU applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY8C4126AZI-S433 | Same PSoC 4100M family but with 68-pin QFN, 256 kB flash, and higher GPIO count (up to 55 vs. 44 usable in M445T). | Better suited for designs requiring more analog channels or larger firmware image size. | Select when additional flash or pin count is needed; not pin-compatible due to different package and pinout. |
| STM32G071KBT6 | Arm Cortex-M0+ core @ 64 MHz, 128 kB flash, 36 kB SRAM, but lacks integrated CAPSENSE™, programmable analog, and LCD drive. | Requires external components for capacitive sensing or LCD control, increasing BOM and layout complexity. | Choose only if standard peripherals suffice and cost-per-GPIO is prioritized over system-level integration. |
Compared with CY8C4125AXI-M445T, CY8C4126AZI-S433 offers greater scalability within the same architecture, while STM32G071KBT6 trades off analog programmability for raw processing throughput - making the CY8C4125AXI-M445T optimal for deeply integrated, low-power mixed-signal systems where component count reduction is critical.
Availability
CY8C4125AXI-M445T is available at Aetrix Electronics and suitable for industrial HMI touch panels, smart thermostats, PLC I/O modules, and motor feedback units requiring stable component supply across extended temperature and long-lifecycle programs.
Supply support for CY8C4125AXI-M445T 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 mixed-signal solutions, with global manufacturing and quality certifications including ISO/TS 16949 and AEC-Q200.
The PSoC™ 4100M product line targets cost-sensitive, low-power embedded systems requiring analog-digital convergence - designed specifically for industrial control, appliance interfaces, and IoT edge nodes where flexibility and integration reduce total system cost.
FAQ
Does CY8C4125AXI-M445T support USB connectivity?
No. This device does not include a USB PHY or USB controller. Communication is limited to SCB-configured interfaces (I²C, SPI, UART) and requires an external USB-to-UART bridge (e.g., CP2102) for host PC connectivity during development or field updates.
What debug tools are compatible with CY8C4125AXI-M445T?
It supports Serial Wire Debug (SWD) via SWDCLK/SWDIO pins using industry-standard tools including Infineon's KitProg3, Segger J-Link, and ARM-compatible debug probes. PSoC Creator IDE provides full firmware download, breakpoint debugging, and real-time variable watch capabilities.
Can the on-chip opamps drive capacitive loads directly?
Yes - all four opamps support high-current output mode (up to 25 mA) and can drive typical capacitive touch sensor electrodes (≤50 pF) without external buffers. Output impedance and stability are maintained across temperature when configured per Infineon's AN91182 design guidelines.
Is the 12-bit SAR ADC capable of simultaneous sampling?
No. The SAR ADC has a single conversion core with multiplexed inputs; it performs sequential sampling across up to 16 channels. For true simultaneous sampling, external parallel ADCs or devices with multiple SAR cores (e.g., PSoC 6) are required.
CY8C4125AXI-M445T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 64-LQFP
- Series:
- PSOC™ 4 CY8C4100
- 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:
- 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 8x12b SAR; D/A 1x7b, 1x8b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY8C4125AXI-M445T FAQ
1.How can I place an order for CY8C4125AXI-M445T through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4125AXI-M445T 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-M445T reliable?
The price and inventory of CY8C4125AXI-M445T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4125AXI-M445T is usually 5 days.
3.What payment methods are accepted for CY8C4125AXI-M445T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4125AXI-M445T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4125AXI-M445T?
CY8C4125AXI-M445T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4125AXI-M445T 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-M445T?
For technical support, including CY8C4125AXI-M445T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4125AXI-M445T requirements.
6.How does Aetrix verify that CY8C4125AXI-M445T is sourced from the original manufacturer or authorized distributors?
All CY8C4125AXI-M445T 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-M445T meets industry standards.
7.What is the process for return or replacement of CY8C4125AXI-M445T?
All CY8C4125AXI-M445T units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4125AXI-M445T, 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-M445T part is unused and in its original packaging.
Return procedure for CY8C4125AXI-M445T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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