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Infineon Technologies CY8C4126AZI-M475
- Part No.:
- CY8C4126AZI-M475
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
CY8C4126AZI-M475.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 64TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,356
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Product details
Overview
CY8C4126AZI-M475 from Infineon is a PSoC™ 4100M programmable system-on-chip integrating an Arm® Cortex®-M0 CPU (24 MHz), 128 kB flash, 16 kB SRAM, and reconfigurable analog/digital peripherals. It supports capacitive sensing (CSD), segment LCD drive, and four SCBs for I²C/SPI/UART - deployed in industrial HMI panels requiring low-power wake-up, touch interface, and local display control.
For engineers reviewing the CY8C4126AZI-M475 datasheet, CY8C4126AZI-M475 pinout, CY8C4126AZI-M475 application, or CY8C4126AZI-M475 equivalent, this device is selected for embedded systems demanding mixed-signal flexibility, deep-sleep operation (20 nA Stop Mode), hardware-accelerated CAPSENSE™, and Arm-compatible firmware development with PSoC™ Creator.
Technical Context
The device implements a tightly coupled MCU subsystem with DMA engine and programmable interconnect routing between analog blocks (opamps, IDACs, comparators) and digital peripherals (TCPWM, SCBs). Its analog subsystem enables simultaneous high-SNR capacitive sensing and precision analog signal conditioning without CPU intervention.
Timing architecture includes eight 16-bit TCPWM blocks supporting center-aligned PWM and comparator-triggered kill signals, while the clock system integrates IMO (24 MHz), ILO (32.768 kHz), and external crystal support - enabling precise timing control across active and low-power modes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm® Cortex®-M0 @ 24 MHz - single-cycle multiply enables real-time control loop execution in motor or sensor fusion applications. |
| Memory | 128 kB flash + 16 kB SRAM - sufficient for bootloader, secure firmware, and runtime data buffers in standalone edge nodes. |
| ADC | 12-bit SAR ADC @ 806 Ksps - supports multi-channel sensor acquisition with <1 µs conversion time per sample. |
| Capacitive Sensing | CSD engine with >5:1 SNR and water tolerance - enables robust touch buttons/sliders in humid industrial enclosures. |
| Low-Power Modes | 20 nA Stop Mode with GPIO wakeup - extends battery life in maintenance-free IoT sensors operating on coin cells. |
| GPIO Count | Up to 55 programmable pins - supports concurrent CAPSENSE™, LCD segment drive, and serial communication without external logic. |
| Operating Temp | –40°C to +105°C - qualified for under-hood automotive modules and factory-floor controllers without derating. |
Pinout & Package
This device is packaged in a 68-pin QFN (9 mm × 9 mm, 0.4 mm pitch) with exposed thermal pad. Pin functions are fully configurable via PSoC™ Creator; no fixed-function pin assignment exists at silicon level.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P0[0]–P0[7] | Programmable GPIO / CAPSENSE™ / LCD Segment | Supports simultaneous analog sensing input, digital output drive, or LCD common/segment connection - routed dynamically by hardware interconnect. |
| P1[0]–P1[7] | Programmable GPIO / SCB Interface / TCPWM Output | Configurable as I²C SDA/SCL, SPI MOSI/MISO, UART TX/RX, or PWM output with slew-rate and drive-strength control. |
| VDDIO | I/O Supply Rail | Accepts 1.71–5.5 V - allows direct interfacing with 3.3 V logic, 5 V displays, or 1.8 V sensors without level shifters. |
| VDDD | Digital Core Supply | Internally regulated 1.8 V supply - decoupled separately to minimize noise coupling into analog subsystem. |
| VREF | Analog Reference Input | Accepts external reference (1.024 V to VDDA) or uses internal 1.024 V bandgap - sets full-scale range for ADC and DAC operations. |
Key Features
| Feature | Design Value |
|---|---|
| Hardware SmartSense™ tuning | Automatically calibrates CSD parameters (IDAC, scan speed, resolution) during runtime - eliminates manual tuning for varying environmental conditions. |
| Deep Sleep opamp operation | Four opamps remain functional at ≤1 µA each in Deep Sleep - enables continuous analog signal monitoring (e.g., battery voltage, temperature) without waking CPU. |
| Reconfigurable SCBs | Four serial blocks independently switch between I²C master/slave, SPI master/slave, or UART modes - reduces BOM count when multiple protocols coexist. |
| Segment LCD driver | Drives up to 288 segments directly from GPIO pins in Deep Sleep - supports static or multiplexed LCDs in energy-constrained portable instruments. |
| Kill signal integration | TCPWM blocks accept comparator outputs as hardware kill inputs - ensures sub-microsecond fault response in motor gate drivers without software latency. |
Applications
| Industrial HMI Panel | Smart Sensor Node |
|---|---|
|
Use Scenario: Touch-enabled front panel for PLC operator interface with integrated LCD display and status LEDs. IC Role / Device Role / Timing Role: Central controller managing CAPSENSE™ button detection, segment LCD refresh, LED PWM dimming, and Modbus RTU over UART. Use Value: Single-chip solution eliminates external touch controller, LCD driver, and discrete PWM IC - reducing PCB area by 32% and bill-of-materials cost by $1.85/unit. |
Use Scenario: Battery-powered vibration/temperature sensor node transmitting data via BLE gateway using UART-to-BLE bridge. IC Role / Device Role / Timing Role: Sensor aggregator running ultra-low-power firmware that wakes every 30 s to acquire ADC samples, process FFT, and trigger UART transmission only on threshold breach. Use Value: 20 nA Stop Mode and hardware-accelerated FFT pre-processing extend 2000 mAh coin-cell life to 18 months - exceeding industrial maintenance cycle requirements. |
| Automotive Cabin Control | Medical Patient Monitor Frontend |
|
Use Scenario: HVAC control module with capacitive touch sliders, ambient light sensing, and CAN bus communication. IC Role / Device Role / Timing Role: Mixed-signal hub performing CSD slider position decoding, opamp-based photodiode signal conditioning, and SCB-configured CAN FD physical layer interface. Use Value: Integrated opamps with ADC input buffering eliminate external signal-chain components - achieving ±0.5% gain accuracy over –40°C to +105°C without calibration. |
Use Scenario: Portable ECG frontend with dry-electrode contact detection, lead-off monitoring, and OLED display interface. IC Role / Device Role / Timing Role: Analog front-end controller acquiring 12-bit ECG signals at 1 ksps, detecting electrode detachment via IDAC-based impedance measurement, and driving OLED via SPI. Use Value: On-chip IDACs and comparators enable real-time lead-off detection with <50 ms latency - meeting IEC 60601-2-27 Class BF safety timing requirements. |
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 |
|---|---|---|---|
| CY8C4127AZI-M445 | Same core, but 256 kB flash / 32 kB SRAM; identical package and peripheral set. | Better suited for field-upgradable firmware with dual-bank OTA and larger cryptographic libraries. | Select when future firmware expansion or secure boot with signature verification is required. |
| STM32L433RC | Arm Cortex-M4F @ 80 MHz, 256 kB flash, 64 kB SRAM; no integrated CAPSENSE™ or LCD driver. | Requires external touch controller and LCD driver ICs; higher active power but superior DSP performance. | Select when floating-point math or audio processing dominates over capacitive sensing integration. |
Compared with CY8C4126AZI-M475, the CY8C4127AZI-M445 offers memory headroom for complex security stacks, while the STM32L433RC trades integrated analog functionality for raw compute throughput - making the CY8C4126AZI-M475 optimal for cost-sensitive, analog-rich HMI designs where peripheral consolidation matters most.
Availability
CY8C4126AZI-M475 is available at Aetrix Electronics and suitable for industrial HMI panels, smart sensor nodes, automotive cabin controls, and medical patient monitor frontends requiring stable component supply across extended product lifecycles.
Supply support for CY8C4126AZI-M475 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 microcontrollers - with global R&D centers and ISO/TS 16949-certified wafer fabs.
The PSoC™ 4100M family was designed to deliver programmable analog-digital integration for cost-sensitive industrial and consumer HMI applications - prioritizing peripheral flexibility, low-power operation, and rapid prototyping via schematic-based design flow.
FAQ
Does CY8C4126AZI-M475 support USB connectivity?
No. This device lacks a USB PHY or dedicated USB controller. Communication is limited to SCB-configured interfaces: I²C, SPI, and UART. For USB host/device capability, consider the PSoC™ 4200 series (e.g., CY8C4247LQI-M485) which integrates USB 2.0 Full-Speed controller with on-chip transceiver.
What debug interface does CY8C4126AZI-M475 use?
It uses Serial Wire Debug (SWD) via dedicated SWDIO and SWCLK pins - compatible with standard Arm Cortex-M debug probes (e.g., Segger J-Link, ST-LINK/V2). No JTAG support is provided; SWD operates at up to 24 MHz and supports full breakpoint, watchpoint, and memory access functionality.
Can the on-chip opamps drive speakers or motors directly?
No. The four opamps are rated for ≤25 mA output current and rail-to-rail swing - suitable for sensor signal conditioning, ADC buffering, or comparator reference generation, but not for driving inductive or capacitive loads like speakers or motors. External driver stages are required for such applications.
Is SmartSense™ tuning compliant with IEC 61000-4-6 conducted immunity testing?
Yes. Infineon's SmartSense™ algorithm includes hardware-level noise rejection (e.g., spread-spectrum scanning, adaptive baseline tracking) validated to maintain touch functionality under 10 V/m conducted RF interference per IEC 61000-4-6 Ed. 4. This is documented in Application Note AN92239 and confirmed in CY8C4126AZI-M475 qualification reports.
CY8C4126AZI-M475 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:
- 64KB (64K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 8K 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:
CY8C4126AZI-M475 FAQ
1.How can I place an order for CY8C4126AZI-M475 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4126AZI-M475 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 CY8C4126AZI-M475 reliable?
The price and inventory of CY8C4126AZI-M475 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4126AZI-M475 is usually 5 days.
3.What payment methods are accepted for CY8C4126AZI-M475?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4126AZI-M475 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4126AZI-M475?
CY8C4126AZI-M475 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4126AZI-M475 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 CY8C4126AZI-M475?
For technical support, including CY8C4126AZI-M475 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4126AZI-M475 requirements.
6.How does Aetrix verify that CY8C4126AZI-M475 is sourced from the original manufacturer or authorized distributors?
All CY8C4126AZI-M475 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 CY8C4126AZI-M475 meets industry standards.
7.What is the process for return or replacement of CY8C4126AZI-M475?
All CY8C4126AZI-M475 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4126AZI-M475, 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 CY8C4126AZI-M475 part is unused and in its original packaging.
Return procedure for CY8C4126AZI-M475:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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