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Infineon Technologies CY8C4025AZI-S403
- Part No.:
- CY8C4025AZI-S403
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
CY8C4025AZI-S403.pdf
- Description:
- IC MCU 32BIT 32KB FLASH 48TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:439
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Product details
Overview
CY8C4025AZI-S403 from Infineon is a 32-bit Arm® Cortex®-M0+ microcontroller with 48 MHz CPU, 32 KB flash, 4 KB SRAM, integrated CAPSENSE™ capacitive sensing, two SCBs supporting I²C/SPI/UART, and five 16-bit TCPWM blocks - deployed in industrial HMI, consumer touch panels, and smart appliance control systems.
For engineers reviewing the CY8C4025AZI-S403 datasheet, CY8C4025AZI-S403 pinout, CY8C4025AZI-S403 application, or CY8C4025AZI-S403 equivalent, key selection criteria include Deep Sleep current (2.5 µA), CAPSENSE™ sigma-delta SNR (>5:1), programmable analog IDACs, GPIO reconfigurability across 36 pins, and dual SCB runtime reconfiguration capability.
Technical Context
The device implements a single-layer AHB-Lite interconnect between CPU, memory, and peripherals, with dedicated hardware for CAPSENSE™ v2 sigma-delta modulation and SmartSense auto-tuning. Its analog subsystem includes two low-power comparators operational in Deep Sleep mode and a single-slope 10-bit ADC derived from the capacitance sensing block.
Digital resources comprise five TCPWM blocks supporting center-aligned PWM, comparator-triggered kill signals for motor safety, and two reconfigurable serial communication blocks (SCBs) that can be independently assigned as I²C, SPI, or UART at runtime without firmware reload.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm® Cortex®-M0+, 48 MHz - enables deterministic real-time control with single-cycle multiply for motor timing and sensor fusion. |
| Flash / SRAM | 32 KB flash with read accelerator / 4 KB SRAM - supports moderate firmware complexity and real-time data buffering without external memory. |
| Capacitive Sensing | CAPSENSE™ v2 with sigma-delta modulator and >5:1 SNR - delivers robust water-tolerant touch detection on up to 36 GPIOs. |
| Serial Interfaces | 2 × SCBs, runtime-reconfigurable as I²C/SPI/UART - allows dynamic protocol switching per peripheral without pin remapping or reset. |
| PWM & Timing | 5 × 16-bit TCPWM blocks with center-aligned, edge, and pseudo-random modes - supports precise motor phase control and LED dimming with hardware kill signal triggering. |
| Power Modes | Deep Sleep mode with 2.5 µA digital system current and active analog - enables battery-powered touch interfaces with multi-year operation. |
| GPIO Count | 36 programmable GPIOs - all support CAPSENSE™, analog input/output, digital logic, and configurable drive strength/slew rate. |
Pinout & Package
Package: 48-pin TQFP (7 mm × 7 mm, 0.5 mm pitch), RoHS-compliant, lead-free, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Core & I/O supply | 1.71–5.5 V input; powers CPU, SRAM, and all digital/analog blocks - supports direct connection to Li-ion or USB 5 V rails. |
| VSS | Digital ground | Primary reference for digital logic and SCB interfaces; must be low-impedance and separated from analog ground where noise-sensitive CAPSENSE™ is used. |
| P0[0]–P0[7] | Port 0 GPIO | Eight pins with full CAPSENSE™, analog comparator, IDAC, and TCPWM capture capability - usable as touch buttons, ADC inputs, or PWM outputs. |
| SWDIO / SWCLK | Debug interface | Two-pin Arm® Serial Wire Debug (SWD) interface - enables full on-chip debugging, flash programming, and trace without JTAG overhead. |
| XRES | External reset | Active-low asynchronous reset input - asserts full device reset including flash controller and clock system; debounced externally for reliable power-up. |
Key Features
| Feature | Design Value |
|---|---|
| SmartSense auto-tuning | Hardware-accelerated CAPSENSE™ calibration eliminates manual threshold tuning and compensates for environmental drift in production. |
| Programmable analog IDACs | Two current DACs usable on any GPIO - enable precision current sourcing for resistive/capacitive sensing or LED biasing without external components. |
| Runtime SCB reconfiguration | Each SCB independently switches between I²C, SPI, and UART protocols via register write - simplifies BOM by consolidating interface requirements into one peripheral. |
| Comparator-triggered TCPWM kill | Dedicated hardware path from comparator output to TCPWM fault input - ensures sub-microsecond motor shutdown for functional safety compliance. |
| Deep Sleep with active analog | Analog comparators and CAPSENSE™ remain operational while CPU and digital system draw only 2.5 µA - enables wake-on-touch with zero firmware latency. |
Applications
| Industrial HMI Panels | Smart Home Appliances |
|---|---|
Use Scenario: Touch-enabled control panel on HVAC or PLC operator interface with glove/water tolerance requirements. IC Role / Device Role / Timing Role: Primary MCU executing CAPSENSE™ firmware, managing display backlight PWM, and communicating via I²C to temperature sensors and fan drivers. Use Value: CAPSENSE™ sigma-delta SNR >5:1 and SmartSense ensure reliable touch detection under condensation or light splashing without recalibration. | Use Scenario: Touch control for microwave oven or washing machine with metal bezel and variable ambient lighting. IC Role / Device Role / Timing Role: Single-chip touch + motor control solution driving relay/SCR outputs, reading capacitive keys, and generating audible feedback tones. Use Value: Integrated TCPWM blocks generate precise 20 kHz ultrasonic cleaning drive signals while maintaining touch responsiveness in Deep Sleep. |
| Wearable Fitness Trackers | Medical Patient Monitors |
Use Scenario: Compact wearable with gesture-based UI, heart-rate sensor interface, and Bluetooth LE connectivity. IC Role / Device Role / Timing Role: System controller handling optical sensor ADC sampling, CAPSENSE™ swipe gestures, and UART-to-BLE module communication. Use Value: 2.5 µA Deep Sleep current extends battery life beyond 7 days on coin-cell power while retaining instant wake-on-touch capability. | Use Scenario: Bedside vital sign monitor requiring ESD-hardened touch interface and fail-safe alarm generation. IC Role / Device Role / Timing Role: Safety-critical controller managing NIBP pump timing, SpO₂ LED drive, and audio alarm PWM with hardware fault shutdown. Use Value: Comparator-triggered TCPWM kill signal disables pump drivers within 100 ns of overpressure detection - meets IEC 62304 Class C timing constraints. |
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 |
|---|---|---|---|
| CY8C4025LQI-S403 | Same core and peripherals, but in 40-pin QFN package (6 × 6 mm) with fewer GPIOs (28) and no LCD segment drive capability. | Suitable for space-constrained designs where touch count ≤ 12 and no LCD is required. | Select when board area is critical and full 36-GPIO count or LCD drive is unnecessary. |
| CY8C4014LQI-S412 | Lower memory (16 KB flash / 2 KB SRAM), no CAPSENSE™ v2 sigma-delta, reduced TCPWM count (3 blocks), and no SmartSense. | Targeted at cost-sensitive basic control tasks without advanced touch or motor timing. | Choose only for non-touch applications with minimal firmware footprint and no functional safety PWM requirements. |
Compared with CY8C4025LQI-S403 and CY8C4014LQI-S412, the CY8C4025AZI-S403 uniquely delivers full 36-GPIO CAPSENSE™ v2 with >5:1 SNR, LCD segment drive, and five TCPWM blocks - making it the only option among the three for high-channel-count, water-tolerant HMI with integrated motor control.
Availability
CY8C4025AZI-S403 is available at Aetrix Electronics and suitable for industrial HMI panels, smart home appliances, wearable fitness trackers, and medical patient monitors requiring stable component supply and long-term lifecycle support.
Supply support for CY8C4025AZI-S403 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 embedded solutions, with global manufacturing and R&D infrastructure.
This device belongs to the PSoC™ 4000S product line - designed specifically for cost-optimized, single-chip mixed-signal applications requiring integrated capacitive sensing, flexible digital logic, and ultra-low-power operation in space-constrained environments.
FAQ
Does CY8C4025AZI-S403 support USB device functionality?
No. The CY8C4025AZI-S403 does not include a USB PHY or USB controller. It supports only I²C, SPI, and UART through its two SCB peripherals. USB connectivity requires an external USB-to-UART bridge IC or migration to a PSoC™ 4100S or PSoC™ 6 device with native USB support.
What debug interfaces are supported, and is JTAG available?
The device supports Arm® Serial Wire Debug (SWD) only - using SWDIO and SWCLK pins. JTAG is not implemented; SWD provides full programming, breakpoint, and trace capability compatible with industry-standard tools like Segger J-Link and OpenOCD. Debug circuits can be permanently disabled in production firmware.
Can CAPSENSE™ operate while the CPU is in Deep Sleep mode?
Yes. CAPSENSE™ hardware remains fully active in Deep Sleep mode, scanning sensors autonomously and generating interrupts on touch events. The CPU wakes only upon interrupt, enabling true zero-latency wake-on-touch with 2.5 µA total system current - verified in the device's electrical specifications table (Section 6.2).
Is the 48-MHz IMO accurate enough for UART communication at 1 Mbps?
Yes. The internal main oscillator (IMO) is factory-trimmed to ±2% accuracy across voltage and temperature. At 48 MHz, this yields ±960 kHz frequency deviation - sufficient for error-free UART operation up to 1 Mbps using oversampling and automatic baud rate tuning features in the SCB peripheral firmware driver.
CY8C4025AZI-S403 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 48-LQFP
- Series:
- PSOC™ 4 CY8C4000S
- 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:
- 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-S403 FAQ
1.How can I place an order for CY8C4025AZI-S403 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4025AZI-S403 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-S403 reliable?
The price and inventory of CY8C4025AZI-S403 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4025AZI-S403 is usually 5 days.
3.What payment methods are accepted for CY8C4025AZI-S403?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4025AZI-S403 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4025AZI-S403?
CY8C4025AZI-S403 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4025AZI-S403 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-S403?
For technical support, including CY8C4025AZI-S403 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4025AZI-S403 requirements.
6.How does Aetrix verify that CY8C4025AZI-S403 is sourced from the original manufacturer or authorized distributors?
All CY8C4025AZI-S403 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-S403 meets industry standards.
7.What is the process for return or replacement of CY8C4025AZI-S403?
All CY8C4025AZI-S403 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4025AZI-S403, 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-S403 part is unused and in its original packaging.
Return procedure for CY8C4025AZI-S403:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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