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Infineon Technologies CY8C4126AZI-M443
- Part No.:
- CY8C4126AZI-M443
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
CY8C4126AZI-M443.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 48TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,561
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Product details
Overview
CY8C4126AZI-M443 from Infineon is a PSoC™ 4100M programmable system-on-chip featuring a 24-MHz Arm® Cortex®-M0 CPU, 128 kB flash, 16 kB SRAM, and integrated programmable analog (4 opamps, 2 comparators, 12-bit SAR ADC at 806 Ksps) and digital peripherals (8 TCPWM blocks, 4 reconfigurable SCBs). It supports capacitive sensing with SmartSense tuning and operates from 1.71–5.5 V across –40°C to +105°C for industrial HMI and sensor-edge applications.
For engineers reviewing the CY8C4126AZI-M443 datasheet, CY8C4126AZI-M443 pinout, CY8C4126AZI-M443 application, or CY8C4126AZI-M443 equivalent, this page delivers verified specifications, package mapping, GPIO-capacitive-LCD routing capability, low-power Deep Sleep operation (20 nA Stop Mode), and real-world design context for embedded control and human interface systems.
Technical Context
The device integrates a fixed-function Arm Cortex-M0 core with fully configurable analog and digital fabric: four opamps support simultaneous comparator mode and ADC input buffering, while the 12-bit SAR ADC achieves 806 Ksps with hardware-accelerated averaging and flexible input multiplexing. All analog blocks remain active in Deep Sleep mode with sub-μA current draw.
Eight TCPWM blocks provide center-aligned, edge-aligned, and pseudo-random PWM generation with comparator-triggered kill signals for motor safety; four SCBs independently implement I²C, SPI, or UART with run-time reconfiguration-enabling mixed-protocol communication without firmware reload.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M0 @ 24 MHz with single-cycle multiply - enables deterministic real-time control loops and efficient firmware execution. |
| Flash / SRAM | 128 kB flash with Read Accelerator; 16 kB SRAM - supports complex firmware with fast code fetch and data buffering for sensor fusion. |
| ADC Performance | 12-bit SAR ADC, 806 Ksps max sampling rate - captures high-fidelity analog sensor data (e.g., temperature, pressure) with minimal latency. |
| Low-Power Modes | 20 nA Stop Mode with GPIO wakeup; Deep Sleep with active opamps/ADC - extends battery life in always-on touch or monitoring nodes. |
| Capacitive Sensing | Infineon CSD engine with >5:1 SNR and water-tolerant operation - enables robust touch buttons/sliders in humid or wet environments. |
| GPIO Flexibility | Up to 55 programmable pins supporting CAPSENSE™, LCD segment drive, analog input/output, or digital logic - eliminates external glue logic in compact HMI designs. |
| Operating Range | –40°C to +105°C ambient, 1.71–5.5 V supply - qualified for extended industrial and automotive cabin applications without derating. |
Pinout & Package
Package: 44-pin TQFP (7 mm × 7 mm, 0.8 mm pitch), RoHS-compliant, lead-free, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Primary power supply input | Accepts 1.71–5.5 V; powers digital core, analog blocks, and I/O; requires local 100-nF decoupling. |
| VSS | Digital ground reference | Common return path for digital logic and SWD debug interface; must be low-impedance. |
| XRES | Active-low reset input | Asynchronous hardware reset; internal pull-up; compatible with open-drain pushbutton or supervisor IC. |
| P0[0]–P0[7] | Programmable GPIO bank 0 | Support CAPSENSE™, analog input, LCD segment/common, or digital I/O; configurable slew rate and drive strength. |
| P1[0]–P1[7] | Programmable GPIO bank 1 | Same flexibility as P0; includes dedicated SCB0 and TCPWM0 signal routing capability. |
| SWDIO / SWCLK | ARM Serial Wire Debug interface | Two-pin debug port for programming and real-time trace; no external pull-ups required. |
Key Features
| Feature | Design Value |
|---|---|
| SmartSense auto-tuning | Hardware-accelerated calibration of CAPSENSE™ parameters eliminates manual threshold tuning and improves production yield. |
| Deep Sleep analog retention | Opamps, comparators, and ADC remain functional at ≤1 μA total current - enables continuous low-power sensor wake-up triggers. |
| Reconfigurable SCBs | Four independent serial blocks each switchable between I²C/SPI/UART in firmware - reduces BOM count and simplifies protocol migration. |
| Programmable LCD drive | Direct segment/common drive on all GPIOs with 4-bit memory per pin in Deep Sleep - supports segmented displays without external driver IC. |
| TCPWM kill signal | Comparator output can asynchronously force PWM output to safe state - meets functional safety requirements for motor control. |
Applications
| Industrial HMI Panels | Smart Sensor Nodes |
|---|---|
|
Use Scenario: Touch-enabled operator interface on factory HMIs with environmental exposure to dust, moisture, and wide temperature swings. IC Role / Device Role / Timing Role: Main controller executing GUI logic, CAPSENSE™ processing, and LCD segment driving with real-time response. Use Value: Integrated CSD with >5:1 SNR and water tolerance eliminates need for overlay shielding or secondary touch controllers. |
Use Scenario: Battery-powered environmental sensor node measuring temperature, humidity, and vibration in remote locations. IC Role / Device Role / Timing Role: System-on-chip managing sensor acquisition, low-power sleep/wake cycles, and wireless data prep via UART/I²C. Use Value: 20 nA Stop Mode with GPIO wakeup and on-chip SAR ADC reduce average system current to <10 μA in duty-cycled operation. |
| Motor Control Subsystems | Medical Patient Monitoring |
|
Use Scenario: Fan or pump controller requiring precise PWM timing, overcurrent protection, and thermal feedback. IC Role / Device Role / Timing Role: Real-time motor timing engine using TCPWM blocks with comparator-triggered kill signals for fault response. Use Value: Hardware-synchronized kill signal ensures <100 ns response to overcurrent events - exceeds IEC 61800-5-2 functional safety timing constraints. |
Use Scenario: Portable vital signs monitor with ECG front-end, LED photoplethysmography, and capacitive touch controls. IC Role / Device Role / Timing Role: Analog signal conditioner (opamp gain/ADC sampling) and digital coordinator for multi-sensor data fusion. Use Value: Four rail-to-rail opamps with ADC input buffering enable simultaneous analog channel acquisition without external signal conditioning. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY8C4127AZI-M445 | 128 kB flash, 16 kB SRAM, same package but adds USBFS block and increases GPIO count to 59. | Required when host-side USB device connectivity or additional I/O is needed beyond CY8C4126AZI-M443's capabilities. | Select for designs needing native USB HID or CDC class support without external bridge IC. |
| STM32L432KC | 64 kB flash, 16 kB SRAM, Cortex-M4F core, no integrated CAPSENSE™ or programmable analog fabric. | Suitable for cost-sensitive, non-capacitive applications where DSP acceleration or floating-point math is prioritized over analog configurability. | Choose when algorithmic complexity outweighs need for on-die analog reconfiguration or touch integration. |
Compared with CY8C4126AZI-M443, the CY8C4127AZI-M445 adds USB functionality at identical analog/digital flexibility, while the STM32L432KC trades programmable analog for higher CPU performance and lower unit cost-but requires external components for touch or precision analog signal chain design.
Availability
CY8C4126AZI-M443 is available at Aetrix Electronics and suitable for industrial HMI panels, smart sensor nodes, motor control subsystems, and medical patient monitoring devices requiring stable component supply across extended temperature and long-lifecycle programs.
Supply support for CY8C4126AZI-M443 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 manufacturing and quality certification to ISO/TS 16949 and ISO 9001.
CY8C4126AZI-M443 belongs to the PSoC™ 4100M family-designed specifically for cost-optimized, low-power embedded systems requiring field-reconfigurable analog and digital logic in a single chip for HMI, sensing, and control.
FAQ
Does CY8C4126AZI-M443 support USB connectivity?
No. CY8C4126AZI-M443 lacks a USB physical layer or USBFS peripheral. For USB-capable variants in the same family, consider CY8C4127AZI-M445, which integrates USB Full-Speed functionality. This part relies on SCBs for UART, I²C, or SPI communication only.
What is the maximum operating frequency of the internal IMO oscillator?
The Internal Main Oscillator (IMO) is factory-trimmed to 24 MHz with ±2% accuracy over temperature and voltage. It serves as the default clock source for the CPU and most peripherals unless replaced by an external crystal or PLL-derived clock.
Can all GPIO pins drive LCD segments in Deep Sleep mode?
Yes. All 55 GPIOs support LCD segment or common drive, and the LCD controller retains its 4-bit memory per pin while operating in Deep Sleep mode-enabling static display updates without waking the CPU or consuming significant current.
Is SmartSense tuning supported in production firmware without PSoC Creator?
Yes. Infineon provides the SmartSense Tuner API as part of the PSoC™ Component Pack, callable from standard C firmware compiled with GCC or ARMCC. No PSoC Creator schematic is required for runtime auto-tuning in deployed units.
CY8C4126AZI-M443 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 48-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:
- 38
- 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-M443 FAQ
1.How can I place an order for CY8C4126AZI-M443 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4126AZI-M443 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-M443 reliable?
The price and inventory of CY8C4126AZI-M443 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4126AZI-M443 is usually 5 days.
3.What payment methods are accepted for CY8C4126AZI-M443?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4126AZI-M443 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4126AZI-M443?
CY8C4126AZI-M443 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4126AZI-M443 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-M443?
For technical support, including CY8C4126AZI-M443 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4126AZI-M443 requirements.
6.How does Aetrix verify that CY8C4126AZI-M443 is sourced from the original manufacturer or authorized distributors?
All CY8C4126AZI-M443 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-M443 meets industry standards.
7.What is the process for return or replacement of CY8C4126AZI-M443?
All CY8C4126AZI-M443 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4126AZI-M443, 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-M443 part is unused and in its original packaging.
Return procedure for CY8C4126AZI-M443:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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