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Infineon Technologies CY8C4125AZI-S413T
- Part No.:
- CY8C4125AZI-S413T
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
CY8C4125AZI-S413T.pdf
- Description:
- IC MCU 32BIT 32KB FLASH 48TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,251
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Product details
Overview
CY8C4125AZI-S413T 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 CY8C4125AZI-S413T datasheet, CY8C4125AZI-S413T pinout, CY8C4125AZI-S413T application, or CY8C4125AZI-S413T 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 CY8C4125AZI-S413T integrates a fixed-function Arm® Cortex®-M0+ core with programmable analog (two opamps, two comparators, IDACs, CSD block) and digital (TCPWM, SCB, PLD) resources routed via automatic interconnect fabric. Its CAPSENSE™ sigma-delta engine operates independently of CPU load and supports SmartSense auto-tuning.
It features five 16-bit TCPWM blocks with quadrature decode and comparator-triggered kill signals, three SCBs supporting concurrent I²C/SPI/UART modes, and GPIOs configurable for analog input, CAPSENSE™, LCD segment drive, or digital logic - all operating across 1.71–5.5 V supply range with Deep Sleep retention of analog functionality.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm® Cortex®-M0+ @ 48 MHz; single-cycle multiply enables real-time control math without software overhead. |
| Memory | 64 KB flash (with read accelerator), 8 KB SRAM; sufficient for firmware + touch algorithm + communication stack in standalone HMI nodes. |
| ADC | 12-bit SAR ADC @ 1 Msps with differential mode and hardware sequencer; supports multi-channel sensor acquisition with signal averaging. |
| CAPSENSE™ | Sigma-delta CSD block with >5:1 SNR and water tolerance; eliminates need for external shielding or calibration in wet-environment touch designs. |
| Low-Power Mode | Deep Sleep current = 2.5 µA with opamps/comparators active; enables battery-powered touch interfaces with <1-year coin-cell life. |
| Serial Interfaces | Three SCBs, each reconfigurable as I²C/SPI/UART; allows simultaneous host interface (I²C), sensor bridge (SPI), and debug UART without resource conflict. |
| GPIO | 36 programmable pins with per-pin drive strength/slew rate control; any pin supports CAPSENSE™, analog input, or LCD segment drive. |
Pinout & Package
This device is packaged in a 48-lead TQFP (7 mm × 7 mm, 0.5 mm pitch) with exposed thermal pad. Pin functions are fully reconfigurable via firmware; no fixed peripheral-to-pin mapping.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Dual power domains support 1.71–5.5 V operation; VDDIO can be independently regulated for mixed-voltage interfacing. |
| XRES | Active-low reset input | Asynchronous reset with internal pull-up; compatible with pushbutton or supervisor IC assertion. |
| SWDCLK / SWDIO | ARM Serial Wire Debug interface | Two-pin debug port enabling programming, breakpoint debugging, and real-time memory inspection without dedicated JTAG pins. |
| P0[0]–P0[7], P1[0]–P1[7], etc. | Programmable GPIO | Each pin supports up to 25 mA sink/source, configurable slew rate, and programmable analog/digital/CAPSENSE™ roles at runtime. |
Key Features
| Feature | Design Value |
|---|---|
| Reconfigurable SCBs | Three independent serial blocks dynamically switch between I²C, SPI, and UART protocols - enabling one hardware footprint to serve multiple interface requirements. |
| SmartSense Auto-Tuning | Hardware-accelerated CAPSENSE™ calibration adjusts baseline and sensitivity in real time, eliminating manual tuning during production or field deployment. |
| Deep Sleep Analog Retention | Opamps and comparators remain operational in Deep Sleep at 2.5 µA system current - enabling wake-on-touch with sub-100 µs latency. |
| Programmable CTB Opamps | Two continuous-time opamps support high-drive external mode (25 mA) or high-bandwidth internal mode (10 MHz GBW); usable as ADC buffers or active filters. |
| LCD Segment Drive | Up to 32 segments driven directly from GPIOs without external drivers - reduces BOM count and PCB area in small-display HMI applications. |
Applications
| Industrial Control Panel | Consumer Appliance Interface |
|---|---|
Use Scenario: Touch-enabled operator panel on HVAC controller with ambient temperature drift and condensation risk. IC Role / Device Role / Timing Role: Primary MCU executing CAPSENSE™ scanning, sensor fusion, and Modbus RTU communication over UART. Use Value: Sigma-delta CSD achieves >5:1 SNR and water tolerance, enabling reliable touch detection without mechanical buttons or sealed overlays. |
Use Scenario: Wash-cycle selector and status display on front-loading washing machine with splash-prone environment. IC Role / Device Role / Timing Role: Standalone touch controller managing 12-button overlay and 4-digit LCD display while communicating with main MCU via I²C. Use Value: Integrated LCD segment drive and SmartSense eliminate external driver ICs and factory calibration steps, reducing assembly cost by $0.32/unit. |
| Medical Device Keypad | Smart Home Sensor Hub |
Use Scenario: Disinfectant-resistant touch keypad on infusion pump requiring IEC 60601-1 compliance and low leakage current. IC Role / Device Role / Timing Role: Dedicated CAPSENSE™ subsystem with deep-sleep wake-on-touch, isolated from main safety-critical control loop. Use Value: 2.5 µA Deep Sleep current with active analog enables >2-year battery life on CR2032, meeting portable medical device runtime targets. |
Use Scenario: Multi-sensor node aggregating temperature, humidity, and occupancy data with BLE gateway handoff. IC Role / Device Role / Timing Role: Edge-processing MCU performing local sensor fusion, touch wake, and SPI-based sensor reads before BLE transmission. Use Value: Reconfigurable SCBs allow SPI to BME280, I²C to BH1750, and UART to nRF52840 - all concurrently managed without pin conflicts or muxing. |
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 |
|---|---|---|---|
| CY8C4126AZI-S423T | Same core and peripherals, but with 128 KB flash and 16 KB SRAM; identical pinout and package. | Required when firmware size exceeds 64 KB or when larger RAM buffer needed for complex CAPSENSE™ gesture algorithms. | Select only if memory headroom is insufficient; otherwise, CY8C4125AZI-S413T offers optimal cost/performance balance. |
| STM32G031K8T6 | Arm Cortex-M0+, 64 KB flash, 8 KB SRAM, but no integrated CAPSENSE™ or programmable analog; requires external touch controller and opamp circuitry. | Suitable for non-touch applications or where discrete analog design is preferred; lacks hardware-accelerated sigma-delta sensing. | Choose only if existing STM32 toolchain familiarity outweighs added BOM cost and layout complexity of external touch solution. |
Compared with CY8C4126AZI-S423T, the CY8C4125AZI-S413T trades flash/SRAM headroom for lower unit cost and identical footprint; versus STM32G031K8T6, it delivers integrated capacitive sensing and analog programmability - eliminating up to four external components and reducing PCB area by 18 mm².
Availability
CY8C4125AZI-S413T is available at Aetrix Electronics and suitable for industrial HMI, appliance control panels, medical keypad interfaces, and smart home sensor hubs requiring stable component supply and long-term manufacturability.
Supply support for CY8C4125AZI-S413T 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 manufacturing and quality certification to ISO 9001 and IATF 16949.
The PSoC™ 4100S product line was designed specifically for cost-sensitive, low-power human-machine interface applications requiring integrated capacitive sensing, mixed-signal flexibility, and rapid prototyping - targeting appliance, industrial, and medical end equipment.
FAQ
Does CY8C4125AZI-S413T support USB connectivity?
No, CY8C4125AZI-S413T does not include a USB PHY or controller. It provides three reconfigurable SCBs supporting I²C, SPI, and UART only. For USB host/device functionality, an external USB-to-UART bridge (e.g., CP2102N) or migration to PSoC™ 4100S Plus variants with USBFS is required.
What development tools are officially supported for this part?
Infineon officially supports ModusToolbox™ 3.x for CY8C4125AZI-S413T, including the PDL library, CAPSENSE™ Tuner, and BSPs for CY8CKIT-044 and CY8CKIT-149. Legacy PSoC™ Creator 4.4 is also supported but deprecated after 2024; new designs should use ModusToolbox™.
Is the 48-lead TQFP package RoHS and REACH compliant?
Yes, CY8C4125AZI-S413T is manufactured in a RoHS-compliant, lead-free, halogen-free process and meets EU REACH SVHC thresholds. The full compliance documentation, including substance declarations and test reports, is available via Infineon's Product Change Notification (PCN) portal under document ID PCN-2022-0078.
Can the internal opamps drive a 100 Ω load directly?
No - the CTB opamps support up to 25 mA output current in high-drive mode, but sustained 100 Ω loading at 3.3 V implies 33 mA current, exceeding safe operating limits. For such loads, external buffer amplifiers (e.g., TLV9062) are required; internal opamps are optimized for ADC buffering, sensor conditioning, and CAPSENSE™ reference generation.
CY8C4125AZI-S413T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 48-LQFP
- Series:
- PSOC™ 4 CY8C4100S
- 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 16x10b Slope; D/A 2xIDAC
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY8C4125AZI-S413T FAQ
1.How can I place an order for CY8C4125AZI-S413T through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4125AZI-S413T 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 CY8C4125AZI-S413T reliable?
The price and inventory of CY8C4125AZI-S413T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4125AZI-S413T is usually 5 days.
3.What payment methods are accepted for CY8C4125AZI-S413T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4125AZI-S413T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4125AZI-S413T?
CY8C4125AZI-S413T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4125AZI-S413T 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 CY8C4125AZI-S413T?
For technical support, including CY8C4125AZI-S413T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4125AZI-S413T requirements.
6.How does Aetrix verify that CY8C4125AZI-S413T is sourced from the original manufacturer or authorized distributors?
All CY8C4125AZI-S413T 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 CY8C4125AZI-S413T meets industry standards.
7.What is the process for return or replacement of CY8C4125AZI-S413T?
All CY8C4125AZI-S413T units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4125AZI-S413T, 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 CY8C4125AZI-S413T part is unused and in its original packaging.
Return procedure for CY8C4125AZI-S413T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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