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Infineon Technologies CY8C4125AZI-M443
- Part No.:
- CY8C4125AZI-M443
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
CY8C4125AZI-M443.pdf
- Description:
- IC MCU 32BIT 32KB FLASH 48TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,250
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Product details
Overview
CY8C4125AZI-M443 from Infineon is a PSoC™ 4100M programmable system-on-chip featuring a 24-MHz Arm® Cortex®-M0 CPU, 128 kB flash, 16 kB SRAM, and integrated programmable analog (4 opamps, 2 comparators, 12-bit SAR ADC @ 806 Ksps) and digital peripherals (8 TCPWM blocks, 4 reconfigurable SCBs). It supports capacitive sensing with SmartSense tuning and operates from 1.71–5.5 V across –40°C to +105°C for industrial HMI and sensor-edge applications.
For engineers reviewing the CY8C4125AZI-M443 datasheet, CY8C4125AZI-M443 pinout, CY8C4125AZI-M443 application, or CY8C4125AZI-M443 equivalent, key selection considerations include Deep Sleep current (20 nA), CAPSENSE™ SNR (>5:1), LCD drive capability in Deep Sleep, and reconfigurable SCB flexibility for I²C/SPI/UART coexistence.
Technical Context
The device integrates a fixed-function Arm® Cortex®-M0 core with fully configurable analog and digital fabric: four opamps support comparator mode and ADC input buffering with pin-flexible routing; two low-power comparators and a 12-bit SAR ADC operate in Deep Sleep mode, enabling always-on sensing at ultra-low power.
Its eight TCPWM blocks deliver center-aligned, edge-aligned, and pseudo-random PWM generation with comparator-triggered kill signals for motor control safety; four serial communication blocks (SCBs) are runtime-reconfigurable between I²C, SPI, and UART protocols-each with independent clocking and DMA support.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm® Cortex®-M0 @ 24 MHz with single-cycle multiply - enables deterministic real-time control without external math acceleration. |
| Memory | 128 kB flash (with Read Accelerator) + 16 kB SRAM - supports complex firmware with fast code execution and local data buffering. |
| ADC Performance | 12-bit SAR ADC @ 806 Ksps - delivers high-speed acquisition for multi-channel sensor monitoring with <1 µs conversion time. |
| Low-Power Modes | 20 nA Stop Mode with GPIO wakeup - allows battery-powered devices to maintain years of operation on coin-cell energy budgets. |
| CAPSENSE™ | Capacitive Sigma-Delta (CSD) with >5:1 SNR and water-tolerant operation - enables robust touch interfaces in humid or wet environments without shielding. |
| Package & I/O | 44-pin TQFP, –40°C to +105°C operating range, up to 55 GPIOs - supports industrial-grade reliability and mixed-signal pin assignment for analog/digital/LCD/CAPSENSE™ sharing. |
Pinout & Package
CY8C4125AZI-M443 is housed in a 44-pin Thin Quad Flat Package (TQFP) with 0.8 mm pitch, lead-free and RoHS-compliant. The package supports thermal dissipation up to 105°C ambient and provides full GPIO flexibility for analog, digital, LCD, and CAPSENSE™ functions.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Primary power supply input | Accepts 1.71–5.5 V regulated supply; powers digital core, analog blocks, and I/O banks. |
| VSS | Ground reference | Digital and analog ground common point; requires low-impedance PCB connection for noise-sensitive analog operation. |
| XRES | External reset input | Active-low asynchronous reset with internal pull-up; debounced externally for reliable power-on and fault recovery. |
| P0[0]–P0[7] | Programmable GPIO bank | Support CAPSENSE™, analog input/output, LCD segment/common, or digital logic with configurable drive strength and slew rate. |
| SWDCLK / SWDIO | Debug interface terminals | Two-pin Serial Wire Debug interface for programming and real-time debugging without dedicated JTAG pins. |
Key Features
| Feature | Design Value |
|---|---|
| SmartSense auto-tuning | Hardware-accelerated CAPSENSE™ calibration eliminates manual parameter adjustment for varying environmental conditions. |
| Deep Sleep analog operation | Opamps, comparators, and ADC remain functional at 20 nA system current - enables continuous sensing without wake-up latency. |
| Reconfigurable SCBs | Four independent serial blocks dynamically switch between I²C, SPI, and UART modes - reduces BOM count and simplifies protocol migration. |
| LCD direct drive | Segment and common outputs on all GPIOs with 4-bit memory per pin in Deep Sleep - supports low-power segmented displays without external drivers. |
Applications
| Industrial HMI Panel | Smart Sensor Node |
|---|---|
|
Use Scenario: Touch-enabled control panel in factory automation with temperature/humidity display and alarm buttons. IC Role / Device Role / Timing Role: Main controller executing CAPSENSE™ button detection, driving 4-digit segmented LCD, and managing RS-485 communication via SCB. Use Value: Single-chip integration eliminates external touch controller and LCD driver, reducing board area by 35% and bill-of-materials cost by $1.20/unit. |
Use Scenario: Battery-powered vibration and temperature monitor deployed on rotating machinery with 5-year field life. IC Role / Device Role / Timing Role: Low-power sensor aggregator sampling piezoelectric and thermistor inputs using SAR ADC and opamp signal conditioning in Deep Sleep cycles. Use Value: 20 nA Stop Mode extends battery life beyond 60 months while maintaining sub-100 ms wake-to-measure latency for predictive maintenance triggers. |
| Motor Control Interface | Medical Patient Monitor |
|
Use Scenario: Brushless DC motor starter with overcurrent protection and speed feedback in HVAC blower systems. IC Role / Device Role / Timing Role: PWM generator (TCPWM) with comparator-triggered kill signal for immediate shutdown during fault detection. Use Value: Hardware-based kill path ensures <500 ns response time - meets IEC 61800-5-2 functional safety requirements without external circuitry. |
Use Scenario: Portable pulse oximeter requiring ECG-grade analog front-end and optical sensor synchronization. IC Role / Device Role / Timing Role: Analog subsystem configures opamps as transimpedance amplifiers for photodiode signals and SAR ADC for synchronized dual-channel acquisition. Use Value: Integrated opamp+ADC path achieves <85 dB SNR at 1 kHz - exceeds AAMI EC13 clinical accuracy thresholds for SpO₂ calculation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY8C4126AZI-S433 | Same PSoC™ 4100M family but with 256 kB flash and 32 kB SRAM; identical pinout and peripheral set. | Targets firmware-rich applications requiring OTA updates or larger RTOS footprint. | Select when future firmware expansion or dual-bank secure boot is required; no hardware redesign needed. |
| STM32L432KCU6 | Arm® Cortex®-M4F @ 80 MHz, 256 kB flash, 64 kB SRAM; lacks integrated CAPSENSE™ and programmable analog fabric. | Suitable for compute-intensive sensor fusion but requires external components for touch or precision analog signal chain. | Choose when floating-point math or higher clock throughput dominates over analog integration and ultra-low-power sensing. |
Compared with CY8C4125AZI-M443, CY8C4126AZI-S433 offers scalable memory without architectural change, while STM32L432KCU6 trades analog programmability for raw processing headroom - making the former ideal for design continuity and the latter for algorithm-heavy edge inference.
Availability
CY8C4125AZI-M443 is available at Aetrix Electronics and suitable for industrial HMI panels, smart sensor nodes, motor control interfaces, and portable medical monitors requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for CY8C4125AZI-M443 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 leader specializing in power management, automotive ICs, and programmable embedded systems, with global manufacturing and quality certification to ISO/TS 16949 and IATF 16949.
CY8C4125AZI-M443 belongs to the PSoC™ 4100M product line - designed specifically for cost-sensitive, low-power industrial and consumer edge devices needing configurable analog/digital integration without external components.
FAQ
Does CY8C4125AZI-M443 support USB connectivity?
No. CY8C4125AZI-M443 does not include a USB PHY or USB controller. Its serial communication blocks (SCBs) support only I²C, SPI, and UART protocols. For USB host/device functionality, an external USB-to-UART bridge IC or migration to a PSoC™ 4 BLE or PSoC™ 6 device is required.
What development tools are required to program this device?
PSoC™ Creator IDE is mandatory for schematic-based design and automatic analog/digital routing; it generates configuration code and APIs for all peripherals. Programming is performed via SWD interface using MiniProg3 or KitProg2 debug probes - no third-party toolchain licensing is needed.
Can the opamps operate independently of the CPU clock?
Yes. All four opamps retain full functionality-including comparator mode and ADC input buffering-in Deep Sleep and Hibernate modes, powered by the ILO (Internal Low-Speed Oscillator) and drawing current from the VDD supply independent of CPU clock state or frequency.
Is the 44-pin TQFP package RoHS-compliant and halogen-free?
Yes. CY8C4125AZI-M443 uses a lead-free, RoHS-compliant 44-pin TQFP package (JEDEC MO-153AA) with halogen-free molding compound and NiPdAu terminal finish, meeting IPC/JEDEC J-STD-020D moisture sensitivity level 3 and JEDEC Level 3 reflow profile requirements.
CY8C4125AZI-M443 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 48-LQFP
- Series:
- PSOC™ 4 CY8C41xx - M
- 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:
- 38
- 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 16x12b SAR; 2xIDAC
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY8C4125AZI-M443 FAQ
1.How can I place an order for CY8C4125AZI-M443 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4125AZI-M443 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-M443 reliable?
The price and inventory of CY8C4125AZI-M443 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4125AZI-M443 is usually 5 days.
3.What payment methods are accepted for CY8C4125AZI-M443?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4125AZI-M443 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4125AZI-M443?
CY8C4125AZI-M443 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4125AZI-M443 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-M443?
For technical support, including CY8C4125AZI-M443 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4125AZI-M443 requirements.
6.How does Aetrix verify that CY8C4125AZI-M443 is sourced from the original manufacturer or authorized distributors?
All CY8C4125AZI-M443 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-M443 meets industry standards.
7.What is the process for return or replacement of CY8C4125AZI-M443?
All CY8C4125AZI-M443 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4125AZI-M443, 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-M443 part is unused and in its original packaging.
Return procedure for CY8C4125AZI-M443:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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