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Infineon Technologies CY8C4125AXQ-473
- Part No.:
- CY8C4125AXQ-473
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 44-LQFP
- Datasheet:
-
CY8C4125AXQ-473.pdf
- Description:
- IC MCU 32BIT 32KB FLASH 44TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,231
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Product details
Overview
CY8C4125AXQ-473 from Infineon Technologies (formerly Cypress Semiconductor) is a 32-bit Arm® Cortex™-M0 programmable system-on-chip (PSoC® 4100 family) integrating MCU, reconfigurable analog/digital blocks, 12-bit 806 ksps SAR ADC, two opamps with comparator mode, and two SCBs supporting I²C/SPI/UART. It operates from 1.71 V to 5.5 V and supports –40 °C to +105 °C industrial temperature range, used in capacitive touch HMI, motor control feedback, and low-power sensor interface designs.
For engineers reviewing the CY8C4125AXQ-473 datasheet, CY8C4125AXQ-473 pinout, CY8C4125AXQ-473 application, or CY8C4125AXQ-473 equivalent, key selection criteria include its 24-MHz CPU speed, 32 kB flash / 4 kB SRAM memory map, Deep Sleep current of 20 nA, CapSense Sigma-Delta (CSD) SNR >5:1, and 48-pin TQFP package with full GPIO reconfigurability across analog/digital/CapSense/LCD functions.
Technical Context
The device implements a single-layer AHB-Lite interconnect between Cortex-M0 CPU, SRAM, flash with read accelerator, and programmable digital/analog subsystems. Its analog subsystem includes two opamps with ADC input buffering and dual low-power comparators active in Deep Sleep mode.
Digital flexibility is enabled by four 16-bit TCPWM blocks supporting center-aligned PWM and comparator-triggered kill signals, plus two runtime-reconfigurable SCBs that can be independently assigned as I²C master/slave, SPI master/slave, or UART transceivers - all with automatic routing through the high-speed I/O matrix.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M0, 24 MHz max, single-cycle 32-bit multiply for deterministic motor control loops |
| Flash / SRAM | 32 kB flash with Read Accelerator (0-wait-state at 24 MHz); 4 kB SRAM retained in Hibernate mode |
| ADC | 12-bit SAR, 806 ksps, differential/single-ended input, hardware channel sequencer with signal averaging |
| Analog Peripherals | 2 opamps (reconfigurable drive modes + comparator), 2 low-power comparators active in Deep Sleep |
| Digital Peripherals | 4× TCPWM (center/edge/pseudo-random PWM), 2× SCBs (I²C/SPI/UART reconfigurable at runtime) |
| Power Modes | Stop Mode: 20 nA; Deep Sleep: ~1.3 µA typical; Hibernate: SRAM retention with 1.3 µA |
| Operating Range | 1.71 V to 5.5 V supply; –40 °C to +105 °C ambient temperature |
Pinout & Package
Package: 48-pin TQFP (7 mm × 7 mm, 0.5 mm pitch), RoHS-compliant, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Main power supply input | Accepts 1.71–5.5 V; powers digital core, analog blocks, and I/Os |
| VSS | Ground reference | Common return path for all internal circuits and I/O drivers |
| P0[0]–P0[7] | Programmable GPIO bank 0 | Support CapSense, analog input/output, LCD segment/common, or digital logic with configurable drive strength/slew rate |
| P1[0]–P1[7] | Programmable GPIO bank 1 | Same reconfigurability as P0; includes dedicated SWD debug pins (P1[0]/SWDIO, P1[1]/SWCLK) |
| XRES | External reset input | Active-low asynchronous reset; internally pulled up; debounced in hardware |
| XTAL_IN / XTAL_OUT | External crystal oscillator terminals | Support optional 1–33 MHz crystal for precise clock source; bypassable for internal IMO use |
Key Features
| Feature | Design Value |
|---|---|
| CapSense CSD | Hardware-accelerated capacitive sensing with >5:1 SNR and water-tolerant operation, enabling robust touch buttons/sliders in humid environments |
| SmartSense™ | Automatic hardware tuning of CapSense parameters without firmware intervention, reducing development time and field calibration effort |
| SCB Reconfigurability | Two serial communication blocks dynamically switch between I²C/SPI/UART protocols at runtime, eliminating need for multiple fixed-function peripherals |
| Deep Sleep Comparator | Two comparators remain fully operational in Deep Sleep mode with sub-µA current draw, enabling wake-on-analog-event functionality |
| Flash Security | Three protection levels (Open/Protected/Kill) with irreversible Kill mode disabling external debug access and flash erasure, meeting basic secure boot requirements |
Applications
| Industrial HMI Panels | Smart Appliance Control |
|---|---|
Use Scenario: Touch-enabled control panel for HVAC, PLC interfaces, or factory HMIs operating in wide-temperature industrial environments. IC Role / Device Role / Timing Role: Primary system controller executing real-time UI logic, CapSense scanning, and RS-485/UART communication with host PLC. Use Value: Integrated CapSense CSD and –40 °C to +105 °C rating eliminate external touch controller and thermal derating concerns. | Use Scenario: Embedded control unit in washing machines, refrigerators, or dishwashers requiring capacitive touch, motor timing, and sensor interfacing. IC Role / Device Role / Timing Role: Single-chip solution managing CapSense UI, 3-phase motor PWM via TCPWM blocks, and temperature/humidity ADC acquisition. Use Value: 24-MHz Cortex-M0 with hardware-accelerated CapSense and 20-nA Stop Mode reduce BOM count and standby power below 10 µW. |
| Motor Feedback Systems | Low-Power Sensor Nodes |
Use Scenario: Compact BLDC motor driver board needing analog current sensing, hall-effect decoding, and fault-protected PWM generation. IC Role / Device Role / Timing Role: Real-time motor commutation controller using opamp-based current sense amplification, comparator-based overcurrent detection, and TCPWM kill-signal triggering. Use Value: Dual opamps with ADC buffering and comparator-triggered PWM shutdown enable <1 µs fault response without external logic. | Use Scenario: Battery-powered environmental sensor node measuring temperature, humidity, and light with multi-year battery life. IC Role / Device Role / Timing Role: Ultra-low-power system controller acquiring data via SAR ADC, processing with firmware, and transmitting via I²C to gateway IC. Use Value: 20-nA Stop Mode and Deep Sleep-capable comparators allow wake-on-threshold events while maintaining average current <1 µA. |
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-431 | Lower memory (16 kB flash / 2 kB SRAM), no CapSense CSD block, 32-pin QFN package | Suitable for cost-sensitive digital-only control; lacks hardware capacitive sensing acceleration | Select when CapSense is unnecessary and footprint/cost constraints outweigh mixed-signal flexibility |
| CY8C4247LQI-483 | Higher memory (128 kB flash / 16 kB SRAM), added BLE radio, same 48-pin TQFP package | Enables wireless sensor node integration but increases RF layout complexity and power during TX | Select only if Bluetooth Low Energy connectivity is required and RF design resources are available |
Compared with CY8C4125AXQ-473, CY8C4025LQI-431 sacrifices CapSense and memory for lower cost and size, while CY8C4247LQI-483 adds BLE at the expense of higher power and design complexity - making CY8C4125AXQ-473 optimal for standalone industrial touch/motor control where analog integration and thermal ruggedness are critical.
Availability
CY8C4125AXQ-473 is available at Aetrix Electronics and suitable for industrial HMI panels, smart appliance control units, and motor feedback systems requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for CY8C4125AXQ-473 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 acquired Cypress Semiconductor in 2020 and now owns and supports the full PSoC® portfolio, delivering scalable mixed-signal programmable SoCs for industrial, automotive, and IoT applications.
This device belongs to the PSoC 4100 family - designed specifically for cost-optimized, thermally robust embedded control with integrated analog front-ends and capacitive sensing, targeting applications where discrete MCU + analog ASIC combinations would increase BOM and layout complexity.
FAQ
Does CY8C4125AXQ-473 support USB connectivity?
No. This device does not include a USB PHY or USB controller. Communication is limited to the two SCB modules supporting I²C, SPI, and UART protocols. For USB host/device functionality, designers must use external USB-to-UART bridges or select higher-tier PSoC 4 devices like the CY8C4248LQI-BL553 with integrated USBFS.
Can the on-chip opamps drive external loads directly?
Yes - each opamp supports reconfigurable drive modes: high-drive external output (up to ±25 mA sink/source) for direct LED or small solenoid driving, and high-bandwidth internal output for ADC buffering or comparator input. Drive strength and slew rate are software-configurable per pin.
What debug interfaces are available on CY8C4125AXQ-473?
It features a standard 2-pin Serial Wire Debug (SWD) interface (SWDIO and SWCLK on P1[0]/P1[1]) compatible with Arm-compliant tools including Segger J-Link, Cypress KitProg, and OpenOCD. Debug is enabled by default and can be disabled in firmware; re-enabling requires full flash erase.
Is the CapSense functionality certified for IEC 61000-4-6 conducted immunity?
Yes - Cypress-provided CapSense designs using CSD methodology meet IEC 61000-4-6 Level 3 (10 Vrms, 150 kHz–80 MHz) when implemented per AN85951 layout guidelines, including shielded traces, proper grounding, and decoupling. Certification applies to the algorithm and hardware architecture, not the bare die.
CY8C4125AXQ-473 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 44-LQFP
- Series:
- PSOC™ 4 CY8C4100
- 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, 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 8x12b SAR; D/A 1x7b, 1x8b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY8C4125AXQ-473 FAQ
1.How can I place an order for CY8C4125AXQ-473 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4125AXQ-473 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 CY8C4125AXQ-473 reliable?
The price and inventory of CY8C4125AXQ-473 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4125AXQ-473 is usually 5 days.
3.What payment methods are accepted for CY8C4125AXQ-473?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4125AXQ-473 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4125AXQ-473?
CY8C4125AXQ-473 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4125AXQ-473 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 CY8C4125AXQ-473?
For technical support, including CY8C4125AXQ-473 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4125AXQ-473 requirements.
6.How does Aetrix verify that CY8C4125AXQ-473 is sourced from the original manufacturer or authorized distributors?
All CY8C4125AXQ-473 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 CY8C4125AXQ-473 meets industry standards.
7.What is the process for return or replacement of CY8C4125AXQ-473?
All CY8C4125AXQ-473 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4125AXQ-473, 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 CY8C4125AXQ-473 part is unused and in its original packaging.
Return procedure for CY8C4125AXQ-473:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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