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Infineon Technologies CY8C4126AXI-S433
- Part No.:
- CY8C4126AXI-S433
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 44-LQFP
- Datasheet:
-
CY8C4126AXI-S433.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 44TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,152
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Product details
Overview
CY8C4126AXI-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 CY8C4126AXI-S433 datasheet, CY8C4126AXI-S433 pinout, CY8C4126AXI-S433 application, or CY8C4126AXI-S433 equivalent, key selection criteria include its dual-mode opamp support (high-drive external / high-bandwidth internal), SmartSense™ automatic hardware tuning, TCPWM kill-signal triggering for motor safety, and GPIO-configurable LCD segment drive capability.
Technical Context
The device integrates a fixed-function Arm® Cortex®-M0+ core with fully reconfigurable analog (CTB opamps, SAR ADC, CSD sigma-delta engine) and digital (PLD logic, TCPWM, SCB) subsystems. Its clock system combines ±2% IMO, 32 kHz ILO, and WCO for precision timing across sleep/wake transitions.
Analog resources include two low-power comparators and two IDACs operable in Deep Sleep mode, while programmable digital blocks enable boolean logic on port signals without CPU intervention. All 36 GPIOs support CAPSENSE™, analog, or digital functions with configurable drive strength and slew rate.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm® Cortex®-M0+ @ 48 MHz with single-cycle multiply - enables real-time control loop execution in motor and sensor applications. |
| Memory | 64 KB flash (with read accelerator) + 8 KB SRAM - supports firmware updates and buffered sensor data processing without external memory. |
| ADC | 12-bit SAR ADC @ 1 Msps with differential/single-ended modes and channel sequencer - allows synchronized multi-channel acquisition for industrial monitoring. |
| CAPSENSE™ | Sigma-delta CSD with >5:1 SNR and SmartSense™ auto-tuning - eliminates manual calibration for production touch systems exposed to moisture or EMI. |
| Power | 1.71–5.5 V operation; 2.5 µA Deep Sleep current - enables battery-powered designs with multi-year runtime in smart sensors and wearables. |
| Serial Interfaces | Three SCBs supporting concurrent I²C, SPI, UART - permits simultaneous communication with display, sensor hub, and host MCU without resource contention. |
| TCPWM Blocks | Five 16-bit Timer/Counter/PWM units with center-aligned, edge, and pseudo-random modes - supports precise motor phase control and LED dimming waveforms. |
Pinout & Package
Package: 48-pin TQFP (7 mm × 7 mm, 0.5 mm pitch), RoHS-compliant, lead-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P0[0]–P0[7] | General-purpose GPIO / CAPSENSE™ / Analog input | Configurable as touch sensor electrode, ADC input, or digital I/O; supports high-drive opamp output routing. |
| P1[0]–P1[7] | General-purpose GPIO / SCB interface / TCPWM | Supports I²C/SPI/UART signal routing and PWM output; compatible with LCD segment drive function. |
| P2[0]–P2[7] | General-purpose GPIO / CTB opamp terminals / IDAC output | Direct connection to continuous-time analog block; enables external feedback networks and current-source sensing. |
| P3[0]–P3[7] | General-purpose GPIO / Comparator inputs / WCO | Accepts crystal oscillator inputs (XIN/XOUT); also routes comparator outputs for wake-from-sleep event generation. |
| VDD / VSS | Power supply / Ground | Single 1.71–5.5 V rail; decoupling required per datasheet layout guidelines to maintain ADC/CAPSENSE™ performance. |
| XRES | Active-low reset input | Asynchronous reset pin with internal pull-up; accepts external pushbutton or supervisor IC assertion. |
| SWDIO / SWCLK | Debug interface | Two-pin Serial Wire Debug interface for programming and real-time trace; no dedicated debug port pins required. |
Key Features
| Feature | Design Value |
|---|---|
| Programmable analog blocks | Two reconfigurable opamps with selectable drive modes (external high-drive or internal high-bandwidth) and ADC input buffering - reduces external component count in sensor front-ends. |
| SmartSense™ auto-tuning | Hardware-accelerated CAPSENSE™ calibration that adapts to environmental drift and parasitic capacitance changes - eliminates factory calibration step in high-volume manufacturing. |
| Deep Sleep analog retention | Opamps, comparators, and IDACs remain functional during Deep Sleep at 2.5 µA system current - enables always-on touch wake detection without compromising battery life. |
| Reconfigurable SCBs | Three independent serial blocks each supporting run-time switching between I²C, SPI, and UART protocols - simplifies firmware reuse across product variants with different peripheral topologies. |
| GPIO flexibility | All 36 pins support CAPSENSE™, analog, or digital roles with programmable drive strength (0.5–20 mA), slew rate, and pull-up/down - eliminates board redesign when signal routing requirements change. |
Applications
| Industrial HMI Panel | Smart Appliance Control |
|---|---|
|
Use Scenario: Touch-enabled operator interface on PLC-mounted control panel with ambient moisture exposure. IC Role / Device Role / Timing Role: Primary MCU handling CAPSENSE™ button scanning, local display refresh via GPIO-based LCD drive, and Modbus RTU communication over UART. Use Value: SmartSense™ maintains stable touch response under condensation; 2.5 µA Deep Sleep extends uptime during standby without backup battery. |
Use Scenario: Washing machine control board requiring water-resistant touch buttons, motor PWM control, and temperature monitoring. IC Role / Device Role / Timing Role: System controller managing CAPSENSE™ UI, five TCPWM channels for brushless motor commutation, and 12-bit SAR ADC for NTC thermistor readings. Use Value: Integrated opamps buffer ADC inputs directly; sigma-delta CSD achieves >5:1 SNR despite PCB proximity to high-current motor drivers. |
| Medical Patient Monitor | IoT Sensor Node |
|
Use Scenario: Portable vital-sign monitor with capacitive touch controls and analog front-end for ECG signal conditioning. IC Role / Device Role / Timing Role: Signal acquisition MCU performing analog filtering (CTB opamps), 1-Msps SAR sampling, and Bluetooth LE packet assembly via SCB UART. Use Value: Dual opamp modes allow simultaneous high-bandwidth ECG amplification and low-noise reference generation; 1.71 V min supply supports coin-cell operation. |
Use Scenario: Battery-powered environmental sensor node measuring temperature, humidity, and occupancy via capacitive presence detection. IC Role / Device Role / Timing Role: Ultra-low-power system controller executing periodic CAPSENSE™ wake cycles, SAR ADC conversions, and LoRaWAN uplink via SCB SPI. Use Value: Deep Sleep current of 2.5 µA enables 5+ year battery life; programmable IDACs enable self-calibrating humidity sensor excitation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY8C4026LQI-S423 | Lower memory (32 KB flash / 4 KB SRAM); no SmartSense™; 24 GPIOs | Limited to simpler touch interfaces without auto-tuning or complex motor control | Select when cost sensitivity outweighs need for advanced CAPSENSE™ or TCPWM features. |
| CY8C4247AZI-M485 | Higher performance (48 MHz M0+, 128 KB flash, 16 KB SRAM); includes USBFS block | Supports USB-connected devices and larger firmware images but consumes more power in active mode | Choose for USB-hosted diagnostics or field-upgradable firmware where footprint and BOM cost permit. |
Compared with CY8C4126AXI-S433, CY8C4026LQI-S423 trades CAPSENSE™ robustness and peripheral count for lower unit cost, while CY8C4247AZI-M485 adds USB connectivity and memory headroom at the expense of higher active current and package size - making CY8C4126AXI-S433 optimal for balanced cost, power, and feature requirements in sealed industrial enclosures.
Availability
CY8C4126AXI-S433 is available at Aetrix Electronics and suitable for industrial HMI, smart appliance control, medical patient monitors, and IoT sensor nodes requiring stable component supply, long-term lifecycle assurance, and qualified automotive-grade traceability.
Supply support for CY8C4126AXI-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, sensing, and microcontroller solutions for industrial, automotive, and IoT markets.
CY8C4126AXI-S433 belongs to the PSoC™ 4100S family - designed specifically for cost-sensitive, ultra-low-power embedded systems requiring integrated capacitive sensing, analog signal conditioning, and flexible digital peripherals without external components.
FAQ
Does CY8C4126AXI-S433 support USB communication?
No, CY8C4126AXI-S433 does not include a USB physical layer or USBFS peripheral. It relies on its three SCB modules for I²C, SPI, and UART interfaces only. For USB connectivity, consider the CY8C4247AZI-M485 variant, which integrates USBFS and supports full-speed USB device operation.
What development tools are officially supported for this device?
Infineon officially supports ModusToolbox™ (v3.1+) and legacy PSoC™ Creator (v4.4) IDEs. Both provide CAPSENSE™ Tuner, PDL driver library, and BSPs for CY8C4126AXI-S433. Hardware debugging requires KitProg3 or MiniProg4 programmers compatible with SWD protocol.
Can the SAR ADC operate during Deep Sleep mode?
No, the 12-bit SAR ADC cannot operate in Deep Sleep mode. However, the device supports wake-on-comparator events and low-power IDAC-based capacitive sensing (CSD) during Deep Sleep at 2.5 µA. SAR conversion resumes immediately upon wake-up with sub-microsecond latency.
Is the 48-pin TQFP package RoHS and REACH compliant?
Yes, CY8C4126AXI-S433 in 48LD TQFP packaging meets RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006. Certificate of Compliance is available from Infineon's official product page under "Environmental Documentation" for orderable part number CY8C4126AXI-S433.
CY8C4126AXI-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 Single-Core
- Speed:
- 24MHz
- Connectivity:
- I2C, IrDA, LINbus, Microwire, SmartCard, SPI, SSP, UART/USART
- Peripherals:
- Brown-out Detect/Reset, CapSense, LCD, POR, PWM, 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 Slope, 16x12b SAR; D/A 2xIDAC
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY8C4126AXI-S433 FAQ
1.How can I place an order for CY8C4126AXI-S433 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4126AXI-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 CY8C4126AXI-S433 reliable?
The price and inventory of CY8C4126AXI-S433 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4126AXI-S433 is usually 5 days.
3.What payment methods are accepted for CY8C4126AXI-S433?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4126AXI-S433 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4126AXI-S433?
CY8C4126AXI-S433 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4126AXI-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 CY8C4126AXI-S433?
For technical support, including CY8C4126AXI-S433 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4126AXI-S433 requirements.
6.How does Aetrix verify that CY8C4126AXI-S433 is sourced from the original manufacturer or authorized distributors?
All CY8C4126AXI-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 CY8C4126AXI-S433 meets industry standards.
7.What is the process for return or replacement of CY8C4126AXI-S433?
All CY8C4126AXI-S433 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4126AXI-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 CY8C4126AXI-S433 part is unused and in its original packaging.
Return procedure for CY8C4126AXI-S433:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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