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Infineon Technologies CY8C4025AZI-S403T
- Part No.:
- CY8C4025AZI-S403T
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
CY8C4025AZI-S403T.pdf
- Description:
- IC MCU 32BIT 32KB FLASH 48TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,692
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Product details
Overview
CY8C4025AZI-S403T from Infineon is a 32-bit Arm® Cortex®-M0+ microcontroller with 32 KB flash, 4 KB SRAM, and integrated CAPSENSE™ capacitive touch-sensing engine. It operates from 1.71 V to 5.5 V, supports Deep Sleep mode at 2.5 µA system current, and delivers best-in-class SNR (>5:1) for water-tolerant human interface applications in consumer and industrial control panels.
For engineers reviewing the CY8C4025AZI-S403T datasheet, CY8C4025AZI-S403T pinout, CY8C4025AZI-S403T application, or CY8C4025AZI-S403T equivalent, key selection criteria include its reconfigurable analog/digital blocks, dual SCB serial interfaces (I²C/SPI/UART), five TCPWM timers with comparator-triggered kill signals, and 36 GPIOs supporting programmable drive modes and CAPSENSE™ on any pin.
Technical Context
The device integrates a single-cycle multiply Arm® Cortex®-M0+ CPU running at up to 48 MHz, coupled with a flexible hardware routing matrix that enables dynamic interconnection of fixed-function and programmable analog/digital peripherals. Its analog subsystem includes two low-power comparators active in Deep Sleep, a sigma-delta capacitive sensing engine, and two current DACs usable for sensor biasing or CAPSENSE™ modulation.
Digital resources comprise five 16-bit TCPWM blocks supporting center-aligned PWM, pseudo-random modulation, and hardware kill-input triggering for motor control safety; two reconfigurable serial communication blocks (SCBs); and programmable logic blocks enabling Boolean operations directly on port I/O without CPU intervention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm® Cortex®-M0+, 48 MHz max - enables real-time deterministic control with minimal interrupt latency |
| Flash / SRAM | 32 KB flash with read accelerator / 4 KB SRAM - supports firmware updates and local data buffering without external memory |
| Supply Range | 1.71 V to 5.5 V - allows direct interfacing with 3.3 V and 5 V logic, battery, or mixed-voltage systems |
| Deep Sleep Current | 2.5 µA digital system current - enables multi-year operation on coin-cell batteries in touch-enabled IoT endpoints |
| CAPSENSE™ SNR | >5:1 signal-to-noise ratio - ensures reliable touch detection under wet or noisy EMI conditions |
| TCPWM Blocks | 5 × 16-bit timer/counter/PWM - provides independent timing channels for motor phase control, LED dimming, and sensor excitation |
| SCB Interfaces | 2 × reconfigurable I²C/SPI/UART - permits concurrent communication with sensors, displays, and host controllers using shared pins |
Pinout & Package
Package: 48-pin TQFP (7 mm × 7 mm, 0.5 mm pitch), RoHS-compliant, lead-free, moisture-sensitive level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Main power supply input | Accepts 1.71–5.5 V; powers core, analog, and I/O domains |
| VSS | Ground reference | Common return path for all internal circuits and GPIOs |
| P0[0]–P0[7] | Programmable GPIO bank 0 | Support CAPSENSE™, analog input/output, or digital logic with configurable drive strength/slew rate |
| P1[0]–P1[7] | Programmable GPIO bank 1 | Includes dedicated SWD debug pins (SWDIO/SWCLK) and WCO crystal connections |
| XTAL_IN / XTAL_OUT | 32 kHz watch crystal oscillator terminals | Enables precise real-time clock operation and low-power wake-up timing |
| SCB0_SDA / SCB0_SCL | I²C interface for SCB0 | Configurable as alternate function on P0[4]/P0[5]; supports standard/fast-mode I²C up to 400 kHz |
Key Features
| Feature | Design Value |
|---|---|
| SmartSense™ auto-tuning | Hardware-accelerated CAPSENSE™ calibration eliminates manual tuning and reduces firmware development time by >70% |
| Reconfigurable SCBs | Each SCB can be runtime-switched between I²C, SPI, or UART - simplifies BOM consolidation and design reuse across product variants |
| Deep Sleep with analog active | Comparators and CAPSENSE™ sigma-delta block remain operational while CPU and digital system are powered down - enables ultra-low-power wake-on-touch |
| Programmable I/O matrix | Any GPIO can route to any peripheral function (e.g., TCPWM output, SCB signal, IDAC sink) - removes PCB routing constraints and increases layout flexibility |
| On-chip ROM bootloader | 8 KB ROM contains production-grade USB/UART bootloader - enables field firmware updates without external programmer |
Applications
| Home Appliance Control Panel | Industrial HMI Touch Interface |
|---|---|
Use Scenario: Capacitive touch buttons and sliders on microwave oven or washing machine front panel, operating in humid, high-EMI environments. IC Role / Device Role / Timing Role: Primary MCU executing CAPSENSE™ sensing, UI state machine, and appliance control logic; provides real-time PWM for display backlight dimming. Use Value: >5:1 SNR and SmartSense™ ensure reliable touch detection despite condensation or detergent residue; 2.5 µA Deep Sleep extends battery backup life during standby. | Use Scenario: Operator terminal on factory floor equipment requiring glove-compatible touch response and immunity to 50/60 Hz noise. IC Role / Device Role / Timing Role: System controller managing touch input, serial communication with PLC, and LED status indicators via TCPWM-driven current sinks. Use Value: Programmable drive strength and slew rate allow optimization for noisy industrial grounding; dual SCBs enable simultaneous Modbus RTU (RS-485) and local I²C sensor bus. |
| Medical Patient Monitor Front Panel | Smart Thermostat User Interface |
Use Scenario: Touch-sensitive control surface on bedside monitor with strict low-power and ESD robustness requirements. IC Role / Device Role / Timing Role: Dedicated CAPSENSE™ processor offloading touch processing from main application MCU; communicates via UART with host controller. Use Value: Hardware-based sigma-delta sensing meets IEC 60601-1 ESD immunity (±15 kV air, ±8 kV contact); Deep Sleep current enables >10-year CR2032 battery life in always-on mode. | Use Scenario: Battery-powered wall-mounted thermostat with ambient light-adaptive display and multi-zone HVAC control. IC Role / Device Role / Timing Role: Standalone system-on-chip handling touch input, temperature/humidity sensing (via I²C), LCD segment driving, and wireless module interface. Use Value: Integrated LCD segment drivers eliminate external driver IC; 32 KB flash accommodates OTA update stack and multiple UI language assets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY8C4025LQI-S403T | Same core and peripherals, but in 40-pin QFN (5 mm × 5 mm) package - no WCO pins, reduced GPIO count (28) | Suitable for space-constrained designs where crystal-less operation and fewer I/Os are acceptable | Select when board area is critical and external RTC or software-based timing suffices |
| CY8C4014LQI-S412 | Lower memory (16 KB flash / 2 KB SRAM), no CAPSENSE™ v2 engine, only one SCB and three TCPWM blocks | Targeted at cost-sensitive, non-touch applications like simple sensor nodes or basic motor control | Select only if CAPSENSE™, dual SCB, or >2.5 µA Deep Sleep are not required |
Compared with CY8C4025LQI-S403T and CY8C4014LQI-S412, the CY8C4025AZI-S403T uniquely combines full CAPSENSE™ v2 capability, 48-pin TQFP with WCO support, and dual SCBs - making it the only option among the three qualified for certified wet-environment touch interfaces with concurrent serial connectivity.
Availability
CY8C4025AZI-S403T is available at Aetrix Electronics and suitable for home appliance control panels, industrial HMI touch interfaces, medical patient monitor front panels, and smart thermostat user interfaces requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for CY8C4025AZI-S403T 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 AG is a German semiconductor manufacturer specializing in power management, automotive, industrial, and security solutions, with global R&D and manufacturing infrastructure.
This part belongs to the PSoC™ 4000S product line - designed specifically for cost-optimized, low-power embedded systems requiring integrated capacitive touch, reconfigurable analog/digital logic, and Arm®-based firmware execution in compact form factors.
FAQ
Does CY8C4025AZI-S403T support USB communication?
No. This device lacks a USB PHY or dedicated USB controller. Communication is limited to the two reconfigurable SCB blocks supporting I²C, SPI, and UART protocols. For USB connectivity, an external USB-to-UART bridge IC or migration to a PSoC™ 4100S or PSoC™ 6 device is required.
Can CAPSENSE™ operate while the CPU is in Deep Sleep mode?
Yes. The CAPSENSE™ sigma-delta sensing engine and associated low-power comparators remain fully functional in Deep Sleep mode. Firmware can configure wake-on-touch events with sub-3 µA total system current, enabling battery-powered devices to respond instantly to user input without continuous CPU polling.
What debug interface does CY8C4025AZI-S403T use?
It uses Arm® Serial Wire Debug (SWD) with two dedicated pins: SWDIO and SWCLK. These are multiplexed on P1[2] and P1[3] in the 48-pin TQFP package. No JTAG interface is present. Debugging is supported natively by ModusToolbox™ and PSoC™ Creator IDEs using MiniProg4 or compatible SWD programmers.
Is the 32 KB flash memory field-programmable?
Yes. The flash is electrically erasable and reprogrammable in-system via SWD or through the on-chip ROM bootloader using UART or USB (with external bridge). Sector erase and byte-level programming are supported, enabling secure over-the-air (OTA) firmware updates without requiring chip removal or special programming hardware.
CY8C4025AZI-S403T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 48-LQFP
- Series:
- PSOC™ 4 CY8C4000S
- Packaging:
- Tape & Reel (TR)
- 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:
- 32KB (32K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 4K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.71V ~ 5.5V
- Data Converters:
- A/D 1x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY8C4025AZI-S403T FAQ
1.How can I place an order for CY8C4025AZI-S403T through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4025AZI-S403T 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 CY8C4025AZI-S403T reliable?
The price and inventory of CY8C4025AZI-S403T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4025AZI-S403T is usually 5 days.
3.What payment methods are accepted for CY8C4025AZI-S403T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4025AZI-S403T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4025AZI-S403T?
CY8C4025AZI-S403T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4025AZI-S403T 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 CY8C4025AZI-S403T?
For technical support, including CY8C4025AZI-S403T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4025AZI-S403T requirements.
6.How does Aetrix verify that CY8C4025AZI-S403T is sourced from the original manufacturer or authorized distributors?
All CY8C4025AZI-S403T 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 CY8C4025AZI-S403T meets industry standards.
7.What is the process for return or replacement of CY8C4025AZI-S403T?
All CY8C4025AZI-S403T units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4025AZI-S403T, 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 CY8C4025AZI-S403T part is unused and in its original packaging.
Return procedure for CY8C4025AZI-S403T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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