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Infineon Technologies CY8C4126AZQ-S433
- Part No.:
- CY8C4126AZQ-S433
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
CY8C4126AZQ-S433.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 48TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,443
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Product details
Overview
CY8C4126AZQ-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, and reconfigurable analog/digital blocks. It supports 1.71–5.5 V operation, deep-sleep mode at 2.5 µA, and up to 36 GPIOs in 48-pin TQFP package - used in touch-enabled industrial HMI and battery-powered sensor nodes.
For engineers reviewing the CY8C4126AZQ-S433 datasheet, CY8C4126AZQ-S433 pinout, CY8C4126AZQ-S433 application, or CY8C4126AZQ-S433 equivalent, key selection criteria include its integrated 12-bit SAR ADC (1 Msps), dual opamps with deep-sleep operation, TCPWM timing flexibility, and hardware-accelerated SmartSense auto-tuning for robust touch performance in wet or noisy environments.
Technical Context
The device integrates a fixed-function Arm® Cortex®-M0+ core with programmable analog (CTB opamps, SAR ADC, IDACs) and digital (TCPWM, SCB, PLD) subsystems routed via configurable interconnect. Its CAPSENSE™ sigma-delta engine delivers >5:1 SNR and water tolerance without external components.
Clocking combines ±2% IMO, 32 kHz ILO, and WCO for precision timing; power management enables Deep Sleep with active analog (opamps/comparators) and 2.5 µA system current. All GPIOs support CAPSENSE™, analog, or digital roles with programmable drive strength and slew rate.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm® Cortex®-M0+, 48 MHz - enables real-time control with single-cycle multiply for motor or sensor fusion tasks. |
| Memory | 64 KB flash + 8 KB SRAM - sufficient for firmware with CAPSENSE™ middleware and communication stacks (I²C/SPI/UART). |
| ADC | 12-bit SAR, 1 Msps, differential/single-ended - supports high-resolution analog signal acquisition with channel sequencer and averaging. |
| CAPSENSE™ | Sigma-delta CSD with SmartSense auto-tuning - eliminates manual calibration and maintains reliability under moisture or EMI. |
| Power Range | 1.71–5.5 V - allows direct interface with Li-ion, USB, or industrial 3.3/5 V rails without level-shifting. |
| Low-Power Mode | Deep Sleep at 2.5 µA with active opamps/comparators - enables multi-year battery life in wake-on-touch applications. |
| TCPWM Blocks | Five 16-bit Timer/Counter/PWM units - supports center-aligned PWM for motor control and quadrature decoding for position sensing. |
Pinout & Package
Package: 48-pin TQFP (7 mm × 7 mm, 0.5 mm pitch). Pin functions are fully configurable per GPIO; dedicated pins include XRES (active-low reset), SWDIO/SWCLK (debug), VDDA/VSSA (analog supply), and WCO_IN/WCO_OUT (32 kHz crystal interface).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P0[0]–P0[7] | Programmable GPIO / CAPSENSE™ / Analog Input | Supports mutual/capacitive sensing, opamp input buffering, or SAR ADC channel - no external components needed for basic touch. |
| P1[0]–P1[7] | Programmable GPIO / TCPWM / SCB | Configurable as PWM output, UART TX/RX, or SPI MISO/MOSI - enables mixed-signal peripheral routing without PCB redesign. |
| VDD / VSS | Core Power / Ground | Dual-supply domains (VDDD/VDDA) allow noise isolation between digital logic and precision analog circuits. |
| SWDIO / SWCLK | ARM Serial Wire Debug Interface | Enables in-circuit programming and real-time debugging without dedicated JTAG header - reduces BOM cost. |
| XRES | Active-Low External Reset | Asynchronous reset input compatible with pushbutton or supervisor ICs - ensures deterministic startup after brownout. |
Key Features
| Feature | Design Value |
|---|---|
| Reconfigurable Analog Blocks | Two CTB opamps operate in Deep Sleep with selectable drive modes - enables always-on sensor front-end with sub-µA quiescent current. |
| Hardware CAPSENSE™ Engine | Sigma-delta modulation + SmartSense auto-tuning - achieves stable touch detection on curved surfaces or behind thick overlays without firmware tuning. |
| Run-Time Reconfigurable SCBs | Three serial blocks dynamically switch between I²C/SPI/UART - simplifies protocol adaptation across product variants using same PCB layout. |
| Programmable Digital Logic | PLD blocks perform Boolean operations on port signals - replaces discrete glue logic for state machines or interrupt prioritization. |
| LCD Segment Drive | GPIOs drive up to 28 segments directly - eliminates external LCD driver IC in low-cost display interfaces (e.g., appliance status panels). |
Applications
| Industrial HMI Panel | Smart Home Sensor Node |
|---|---|
Use Scenario: Touch-based control panel for HVAC or PLC interface with overlay durability requirements. IC Role / Device Role / Timing Role: Main MCU executing CAPSENSE™ firmware, managing UART-to-Modbus gateway, and driving local LCD segments. Use Value: Hardware-accelerated SmartSense maintains touch accuracy through condensation or glove use, reducing field returns by >40% vs. software-only solutions. |
Use Scenario: Battery-powered temperature/humidity sensor with wake-on-touch configuration menu. IC Role / Device Role / Timing Role: System-on-chip handling sensor ADC reads, BLE data prep, and ultra-low-power CAPSENSE™ wake trigger. Use Value: 2.5 µA Deep Sleep with active comparators extends CR2032 battery life to 5+ years while retaining instant touch responsiveness. |
| Medical Patient Monitor UI | White Goods Appliance Control |
Use Scenario: Sterilizable touch interface for bedside vital sign displays requiring IEC 60601-1 compliance. IC Role / Device Role / Timing Role: Safety-certified CAPSENSE™ subsystem with redundant self-test routines and SAR ADC for analog sensor conditioning. Use Value: Integrated analog front-end eliminates external opamp/ADC, reducing component count and easing EMC certification for Class II medical devices. |
Use Scenario: Washing machine control board with waterproof touch buttons and motor PWM control. IC Role / Device Role / Timing Role: Dual-role MCU managing CAPSENSE™ inputs, five TCPWM outputs for BLDC motor commutation, and I²C EEPROM logging. Use Value: Single-chip integration of touch, motor control, and communication reduces BOM cost by $0.82/unit versus discrete MCU + touch controller + gate driver solution. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY8C4127AZI-S433 | Same core, 128 KB flash + 16 KB SRAM - larger memory footprint with identical pinout and peripherals. | Required for complex BLE stack + CAPSENSE™ + OTA firmware updates; not suitable for cost-sensitive designs. | Select when firmware size exceeds 64 KB or future-proofing for feature expansion is critical. |
| STM32G071KBT6 | Arm Cortex-M0+, 128 KB flash, but no integrated CAPSENSE™ or programmable analog - requires external touch controller and opamps. | Lower unit cost but increases BOM, PCB area, and design validation effort for touch applications. | Prefer only if existing STM32 toolchain familiarity outweighs CAPSENSE™ integration benefits and analog flexibility. |
Compared with CY8C4126AZQ-S433, CY8C4127AZI-S433 offers scalable memory without peripheral trade-offs, while STM32G071KBT6 demands external components for equivalent touch/analog functionality - making CY8C4126AZQ-S433 optimal for rapid, integrated HMI development.
Availability
CY8C4126AZQ-S433 is available at Aetrix Electronics and suitable for industrial HMI, smart home sensor nodes, medical patient monitor UIs, and white goods appliance control requiring stable component supply and long-term manufacturability.
Supply support for CY8C4126AZQ-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 MCUs, and secure connectivity solutions, with global R&D and manufacturing infrastructure.
CY8C4126AZQ-S433 belongs to the PSoC™ 4100S family - designed specifically for cost-sensitive, touch-enabled embedded systems requiring analog/digital flexibility and ultra-low-power operation without external components.
FAQ
Does CY8C4126AZQ-S433 support hardware encryption for secure firmware updates?
No. This device lacks dedicated cryptographic accelerators or secure boot ROM. Firmware security relies on external secure elements or software-based AES libraries running on the Cortex-M0+ core - suitable for non-regulated consumer applications but insufficient for FIPS 140-2 or PSA Level 2 certification.
Can the SAR ADC measure true differential signals with programmable gain?
Yes. The 12-bit SAR ADC supports true differential input mode with internal PGA gain settings of 1×, 2×, 4×, and 8× - enabling high-precision measurement of bridge sensors or thermocouples without external amplification.
Is the CAPSENSE™ block compatible with projected capacitive (PCAP) touch panels?
No. The integrated CAPSENSE™ engine is optimized for self-capacitive and mutual-capacitive sensing on PCB traces or metal electrodes - not designed for glass-mounted PCAP layers requiring dedicated TSP controllers like Synaptics or Cypress's later CAPSENSE™ Gen5.
What debug interfaces does CY8C4126AZQ-S433 support out-of-the-box?
It supports ARM Serial Wire Debug (SWD) via dedicated SWDIO and SWCLK pins - compatible with standard CMSIS-DAP debug probes (e.g., KitProg3, ST-Link, J-Link). JTAG is not implemented; boundary scan testing requires SWD-based tools.
CY8C4126AZQ-S433 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 48-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, LVD, 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, 16x12b SAR; D/A 2x7b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY8C4126AZQ-S433 FAQ
1.How can I place an order for CY8C4126AZQ-S433 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4126AZQ-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 CY8C4126AZQ-S433 reliable?
The price and inventory of CY8C4126AZQ-S433 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4126AZQ-S433 is usually 5 days.
3.What payment methods are accepted for CY8C4126AZQ-S433?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4126AZQ-S433 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4126AZQ-S433?
CY8C4126AZQ-S433 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4126AZQ-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 CY8C4126AZQ-S433?
For technical support, including CY8C4126AZQ-S433 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4126AZQ-S433 requirements.
6.How does Aetrix verify that CY8C4126AZQ-S433 is sourced from the original manufacturer or authorized distributors?
All CY8C4126AZQ-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 CY8C4126AZQ-S433 meets industry standards.
7.What is the process for return or replacement of CY8C4126AZQ-S433?
All CY8C4126AZQ-S433 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4126AZQ-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 CY8C4126AZQ-S433 part is unused and in its original packaging.
Return procedure for CY8C4126AZQ-S433:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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