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Infineon Technologies CY8C4126AXQ-S433
- Part No.:
- CY8C4126AXQ-S433
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 44-LQFP
- Datasheet:
-
CY8C4126AXQ-S433.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 44TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,600
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Product details
Overview
CY8C4126AXQ-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, 12-bit 1-Msps SAR ADC, and three reconfigurable serial communication blocks (I²C/SPI/UART). It supports deep-sleep operation at 2.5 µA and delivers best-in-class SNR (>5:1) for water-tolerant touch interfaces in industrial HMI and consumer control panels.
For engineers reviewing the CY8C4126AXQ-S433 datasheet, CY8C4126AXQ-S433 pinout, CY8C4126AXQ-S433 application, or CY8C4126AXQ-S433 equivalent, this device is selected for embedded systems requiring mixed-signal reconfigurability, low-power capacitive sensing, and runtime peripheral flexibility without external analog components.
Technical Context
The CY8C4126AXQ-S433 implements a fully integrated PSoC™ 4100S architecture with dual-domain clocking: a ±2% internal main oscillator (IMO) for system timing and a 32 kHz watch crystal oscillator (WCO) for RTC and low-power wake-up. Its analog subsystem includes two continuous-time opamps operable in Deep Sleep mode, each configurable as amplifier, comparator, or ADC input buffer.
Digital reconfigurability is enabled by Smart I/O blocks and five 16-bit TCPWM units supporting center-aligned PWM, quadrature decoding, and comparator-triggered kill signals-enabling motor control and safety-critical timing functions directly in hardware without CPU intervention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm® Cortex®-M0+ @ 48 MHz with single-cycle multiply - enables deterministic real-time control and efficient firmware execution. |
| Memory | 64 KB flash (with read accelerator) + 8 KB SRAM - supports complex firmware with retained state during low-power modes. |
| ADC | 12-bit SAR ADC @ 1 Msps, differential/single-ended, with channel sequencer and signal averaging - delivers high-resolution sensor acquisition with noise suppression. |
| CAPSENSE™ | Sigma-delta capacitive sensing with >5:1 SNR and automatic SmartSense tuning - eliminates manual calibration and ensures robust operation under moisture or EMI. |
| Power | 1.71–5.5 V supply range; Deep Sleep current = 2.5 µA with analog active - enables battery-powered operation for multi-year touch interface deployments. |
| Serial Interfaces | Three SCBs supporting concurrent I²C, SPI, or UART - allows independent communication with sensors, displays, and host controllers without resource contention. |
| GPIO | Up to 36 programmable pins with configurable drive strength, slew rate, and CAPSENSE™/analog/digital roles - simplifies PCB layout and reduces BOM count via pin multiplexing. |
Pinout & Package
This device is housed in a 48-lead TQFP package (10 mm × 10 mm, 0.5 mm pitch) with exposed thermal pad. Pin assignments are validated per Infineon's official pinout diagram for CY8C4126AXQ-S433 (Rev. *Q, p.16).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Primary power supply | Accepts 1.71–5.5 V; powers digital core, analog blocks, and GPIOs - enables single-rail system design. |
| VSS | Ground reference | Common return path for all domains; requires low-impedance connection to minimize noise coupling into analog circuits. |
| XRES | Active-low reset input | Asynchronous hardware reset with internal pull-up; debounced externally for reliable power-on and fault recovery. |
| SWDCLK / SWDIO | Debug interface | Two-pin Serial Wire Debug port - supports programming, real-time tracing, and non-intrusive debugging without halting CPU. |
| P0[0]–P0[7] | Programmable GPIO bank | Support CAPSENSE™, analog input/output, or digital logic; each pin configurable for high-drive or low-slew modes. |
| XTAL_IN / XTAL_OUT | 32 kHz crystal interface | Connects to external watch crystal for precision RTC and low-power wake-up timing - critical for energy-efficient sleep scheduling. |
Key Features
| Feature | Design Value |
|---|---|
| Reconfigurable analog blocks | Two opamps usable as amplifiers, comparators, or ADC buffers - eliminates need for external signal-conditioning ICs in sensor front-ends. |
| Hardware-accelerated CAPSENSE™ | Sigma-delta engine with automatic SmartSense tuning - reduces firmware development time and improves production yield on touch-enabled PCBs. |
| Runtime-reconfigurable SCBs | Three serial blocks independently switchable between I²C/SPI/UART - enables dynamic protocol adaptation without changing hardware or pinout. |
| Deep Sleep with analog retention | 2.5 µA system current while opamps, comparators, and CAPSENSE™ remain active - extends battery life in always-on touch applications. |
| Programmable TCPWM | Five 16-bit timers supporting center-aligned PWM, quadrature decode, and comparator-triggered kill - enables compact motor control firmware with hardware safety enforcement. |
Applications
| Industrial HMI Panel | Smart Appliance Control |
|---|---|
|
Use Scenario: Touch-based operator interface on factory HMIs with glove operation and condensation exposure. IC Role / Device Role / Timing Role: Primary MCU executing CAPSENSE™ scanning, display refresh, and Modbus RTU communication over UART. Use Value: >5:1 SNR and water tolerance eliminate false triggers; 48 MHz CPU handles real-time UI rendering and protocol stack without latency. |
Use Scenario: Wash cycle control in smart washing machines with waterproof touch buttons and motor feedback. IC Role / Device Role / Timing Role: System controller managing CAPSENSE™ inputs, 3-phase motor PWM via TCPWM, and temperature monitoring via SAR ADC. Use Value: Integrated opamps condition thermistor signals; Deep Sleep mode enables low-power standby with instant wake-on-touch. |
| Medical Patient Monitor | IoT Gateway Node |
|
Use Scenario: Bedside vital sign monitor with capacitive touch controls and LCD display in clinical environments. IC Role / Device Role / Timing Role: Central controller handling CAPSENSE™ UI, segment LCD drive, and isolated UART communication to backend modules. Use Value: Single-chip integration reduces EMI risk and meets IEC 60601-1 leakage current requirements via precise analog isolation. |
Use Scenario: Battery-powered environmental sensor node collecting temperature/humidity and transmitting via BLE bridge. IC Role / Device Role / Timing Role: Edge processor performing local CAPSENSE™ button control, sensor ADC acquisition, and SPI-to-BLE bridge management. Use Value: 2.5 µA Deep Sleep current enables >5-year battery life; programmable GPIOs support direct connection to diverse analog sensors. |
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 |
|---|---|---|---|
| CY8C4026LQ-S423 | Lower memory (32 KB flash / 4 KB SRAM); no WCO; 32-pin QFN package | Suitable for cost-sensitive, space-constrained designs with reduced peripheral needs | Select when CAPSENSE™ and basic serial I/O suffice without RTC or high-resolution ADC sequencing. |
| CY8C4247AZI-M485 | Higher performance (48 MHz M0+, 256 KB flash, 32 KB SRAM); includes USBFS; 68-pin TQFP | Targeted at USB-connected devices requiring larger firmware and more peripherals | Choose when USB device interface, extended memory, or additional TCPWM/SCB instances are required. |
Compared with CY8C4126AXQ-S433, CY8C4026LQ-S423 trades memory and crystal support for lower cost and footprint, while CY8C4247AZI-M485 adds USB and memory headroom at higher pin count and price-making CY8C4126AXQ-S433 the optimal balance for mid-tier CAPSENSE™-centric embedded control.
Availability
CY8C4126AXQ-S433 is available at Aetrix Electronics and suitable for industrial HMI, smart appliance control, medical patient monitors, and IoT gateway nodes requiring stable component supply across multi-year production cycles.
Supply support for CY8C4126AXQ-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 ICs, and programmable embedded systems, with global R&D and manufacturing infrastructure.
CY8C4126AXQ-S433 belongs to the PSoC™ 4100S product line-designed specifically for cost-effective, low-power embedded applications demanding integrated capacitive sensing, flexible analog/digital reconfiguration, and Arm®-based firmware scalability.
FAQ
Does CY8C4126AXQ-S433 support USB connectivity?
No. CY8C4126AXQ-S433 does not include a USB physical layer or USBFS peripheral. It provides three SCBs for I²C, SPI, and UART only. For USB-capable variants, consider the CY8C4247AZI-M485 or CY8C4248LQ-BL553 within the same PSoC™ 4 family.
What development tools are officially supported for this device?
Infineon officially supports ModusToolbox™ (v3.1+) and legacy PSoC™ Creator (v4.4) for CY8C4126AXQ-S433. Both provide CAPSENSE™ Tuner, PDL drivers, BSPs, and full debug via KitProg3 or MiniProg4 programmers. No third-party IDEs are certified for production programming.
Can the SAR ADC perform simultaneous sampling on multiple channels?
No. The 12-bit SAR ADC uses a single converter with a channel sequencer and supports sequential sampling up to 1 Msps aggregate rate. True simultaneous sampling requires external parallel ADCs; this device achieves effective multi-channel acquisition through rapid sequencing and hardware-averaged results.
Is the 48-lead TQFP package RoHS-compliant and lead-free?
Yes. CY8C4126AXQ-S433 in the 48LD TQFP package (order code suffix "-S433") is RoHS-compliant and lead-free per Infineon's packaging specification 002-00122 Rev. *Q. The package uses matte tin finish and meets JEDEC J-STD-020 moisture sensitivity level 3 (MSL3).
CY8C4126AXQ-S433 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 44-LQFP
- Series:
- PSOC™ 4 CY8C4100S
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M0+
- Core Size:
- 32-Bit
- Speed:
- 24MHz
- Connectivity:
- FIFO, I2C, IrDA, LINbus, Microwire, SmartCard, SPI, SSP, UART/USART
- Peripherals:
- Brown-out Detect/Reset, CapSense, LCD, POR, PWM, Temp Sensor, WDT
- Number of I/O:
- 36
- 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 16x10b SAR, 16x12b Sigma-Delta; D/A 2x7/8b
- Oscillator Type:
- External, Internal
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY8C4126AXQ-S433 FAQ
1.How can I place an order for CY8C4126AXQ-S433 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4126AXQ-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 CY8C4126AXQ-S433 reliable?
The price and inventory of CY8C4126AXQ-S433 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4126AXQ-S433 is usually 5 days.
3.What payment methods are accepted for CY8C4126AXQ-S433?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4126AXQ-S433 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4126AXQ-S433?
CY8C4126AXQ-S433 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4126AXQ-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 CY8C4126AXQ-S433?
For technical support, including CY8C4126AXQ-S433 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4126AXQ-S433 requirements.
6.How does Aetrix verify that CY8C4126AXQ-S433 is sourced from the original manufacturer or authorized distributors?
All CY8C4126AXQ-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 CY8C4126AXQ-S433 meets industry standards.
7.What is the process for return or replacement of CY8C4126AXQ-S433?
All CY8C4126AXQ-S433 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4126AXQ-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 CY8C4126AXQ-S433 part is unused and in its original packaging.
Return procedure for CY8C4126AXQ-S433:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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