My Inquiry
My Account
Infineon Technologies CY8C4125AZI-M433
- Part No.:
- CY8C4125AZI-M433
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
CY8C4125AZI-M433.pdf
- Description:
- IC MCU 32BIT 32KB FLASH 48TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,393
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
CY8C4125AZI-M433 from Infineon is a PSoC™ 4100M-series programmable system-on-chip integrating an Arm® Cortex®-M0 CPU (24 MHz), up to 128 kB flash, 16 kB SRAM, four low-power opamps, and capacitive sensing (CSD) with >5:1 SNR. It supports Deep Sleep at 20 nA, features eight TCPWM blocks, and delivers 806-Ksps SAR ADC conversion - deployed in industrial HMI, sensor nodes, and touch-enabled control panels.
For engineers reviewing the CY8C4125AZI-M433 datasheet, CY8C4125AZI-M433 pinout, CY8C4125AZI-M433 application, or CY8C4125AZI-M433 equivalent, key selection criteria include Deep Sleep current, CAPSENSE™ water tolerance, reconfigurable SCB serial interfaces (I²C/SPI/UART), and GPIO flexibility for mixed-signal routing in resource-constrained embedded designs.
Technical Context
The device implements a tightly coupled analog-digital architecture where programmable interconnect routes signals between fixed-function peripherals (e.g., SAR ADC, TCPWM) and configurable analog blocks (opamps, comparators, IDACs). Its CSD engine uses sigma-delta modulation with hardware-accelerated SmartSense tuning for robust capacitive sensing across varying environmental conditions.
Power management integrates multiple low-power modes: Stop (20 nA), Hibernate, and Deep Sleep - each with selective peripheral retention and GPIO wakeup. Clocking combines IMO (24 MHz), ILO (32.768 kHz), and external crystal support, enabling precise timing for PWM generation and ADC sampling without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm® Cortex®-M0 @ 24 MHz - enables real-time deterministic control with single-cycle multiply for motor or sensor fusion algorithms. |
| Flash / SRAM | 128 kB flash + 16 kB SRAM - sufficient for bootloader, firmware, and runtime data buffers in standalone edge-node applications. |
| SAR ADC | 12-bit, 806-Ksps - supports high-fidelity analog signal acquisition (e.g., temperature, pressure) with minimal external conditioning. |
| Capacitive Sensing | CSD engine with >5:1 SNR and water-tolerant operation - eliminates false triggers in humid or wet environments like appliance touch panels. |
| Low-Power Modes | 20-nA Stop Mode with GPIO wakeup - extends battery life in coin-cell-powered IoT sensors beyond 5 years. |
| Programmable Analog | 4 opamps + 2 comparators + 4 IDACs - enables on-chip signal conditioning, threshold detection, and self-capacitance measurement without external components. |
| Serial Interfaces | 4 reconfigurable SCBs - each supports I²C, SPI, or UART dynamically at runtime, simplifying multi-protocol communication in space-constrained designs. |
Pinout & Package
This device is housed in a 68-pin QFN package (7 mm × 7 mm, 0.4 mm pitch) with exposed thermal pad, supporting up to 55 programmable GPIOs. Pins are fully configurable as digital I/O, analog inputs/outputs, CAPSENSE™ electrodes, LCD segments, or serial interface signals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD / VSS | Power supply / Ground | Dual-supply domain (1.71–5.5 V) with independent analog/digital ground planes for noise isolation in mixed-signal operation. |
| P0[0]–P0[7], P1[0]–P1[7], etc. | Programmable GPIO | Each pin supports CAPSENSE™, analog input/output, LCD segment/common, or digital logic with configurable drive strength and slew rate. |
| XRES | External reset input | Active-low asynchronous reset with internal pull-up; compatible with pushbutton or microcontroller-initiated system recovery. |
| SWDCLK / SWDIO | Debug interface | Two-pin Serial Wire Debug interface for programming and real-time debugging without dedicated JTAG pins. |
| XTAL_IN / XTAL_OUT | Clock oscillator terminals | Supports external 1–33 MHz crystal for precision timing in communication or ADC sampling applications. |
Key Features
| Feature | Design Value |
|---|---|
| Reconfigurable SCBs | Four serial blocks independently switchable between I²C, SPI, and UART modes at runtime - reduces BOM count and PCB footprint in multi-interface systems. |
| SmartSense auto-tuning | Hardware-accelerated calibration of CAPSENSE™ parameters - eliminates manual tuning effort and ensures consistent button response across production units and temperature ranges. |
| Deep Sleep analog retention | Opamps and comparators remain active at ≤1 µA while CPU sleeps - enables continuous sensor monitoring (e.g., intrusion detection) without waking the core. |
| Segment LCD drive | Direct drive capability on all GPIOs with 4-bit memory per pin in Deep Sleep - supports low-power display updates in battery-operated instrumentation. |
| Programmable interconnect | Flexible routing matrix between analog/digital peripherals and GPIOs - allows custom signal paths without physical redesign, accelerating prototyping and field updates. |
Applications
| Industrial HMI Panels | Smart Sensor Nodes |
|---|---|
|
Use Scenario: Touch-based operator interface on factory-floor equipment with splash resistance requirements. IC Role / Device Role / Timing Role: Primary controller managing CAPSENSE™ buttons, segment LCD display, and RS-485 communication via SCB. Use Value: Water-tolerant CSD and 20-nA Stop Mode enable reliable operation in harsh environments while extending maintenance intervals. |
Use Scenario: Battery-powered environmental monitor logging temperature, humidity, and motion in remote locations. IC Role / Device Role / Timing Role: System-on-chip handling analog sensor conditioning (opamp + ADC), motion-triggered wake, and LoRaWAN packet formatting. Use Value: Integrated opamps and IDACs eliminate external signal-chain components; Deep Sleep current ensures >5-year battery life. |
| Home Appliance Controls | Medical Diagnostic Devices |
|
Use Scenario: Touch-sensitive cooktop or washing machine control panel requiring ESD immunity and EMI resilience. IC Role / Device Role / Timing Role: Capacitive sensing front-end with hardware filtering, LED/LCD driver, and safety-critical timer supervision. Use Value: >5:1 SNR and automatic SmartSense tuning prevent false actuation from steam, condensation, or user moisture. |
Use Scenario: Portable blood glucose meter with analog front-end, LCD display, and USB data export. IC Role / Device Role / Timing Role: Precision analog subsystem (SAR ADC, opamp buffer, reference) paired with secure firmware storage and human-interface logic. Use Value: On-chip 12-bit ADC with 806-Ksps sampling and integrated voltage reference reduce calibration drift and component count. |
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-S433 | Same core and analog subsystem, but with 256 kB flash and 32 kB SRAM - no change in package or pinout. | Required when firmware size exceeds 128 kB or larger RAM buffers needed for protocol stacks (e.g., BLE). | Select if future firmware expansion or dual-bank OTA updates are planned; otherwise, CY8C4125AZI-M433 offers optimal cost/performance balance. |
| STM32L432KC | Arm Cortex-M4F @ 80 MHz, 256 kB flash, 64 kB SRAM, but lacks integrated CAPSENSE™ and programmable analog routing. | Suitable for compute-intensive tasks but requires external ICs for robust capacitive sensing or analog signal conditioning. | Choose only when floating-point math or higher clock speed dominates design requirements - not for CAPSENSE™-centric or analog-flexible use cases. |
Compared with CY8C4126AZI-S433, this part trades flash/SRAM headroom for lower unit cost and smaller die size; versus STM32L432KC, it delivers superior analog integration and lower system-level BOM cost for touch and sensor applications - at the expense of raw CPU performance.
Availability
CY8C4125AZI-M433 is available at Aetrix Electronics and suitable for industrial HMI, smart sensor nodes, home appliance controls, and portable medical devices requiring stable component supply across extended product lifecycles.
Supply support for CY8C4125AZI-M433 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.
CY8C4125AZI-M433 belongs to the PSoC™ 4100M family - designed specifically for cost-sensitive, low-power embedded applications demanding flexible analog-digital integration and robust capacitive sensing without external components.
FAQ
Does CY8C4125AZI-M433 support USB connectivity?
No, CY8C4125AZI-M433 does not include a USB PHY or controller. It relies on external USB-to-UART bridges (e.g., CP2102) or SCB-configured UART for host communication. USB functionality is absent from the PSoC™ 4100M series; later PSoC™ 4 families (e.g., 4200DS) add USB support.
What is the maximum operating temperature for this device?
CY8C4125AZI-M433 is rated for extended industrial operation from –40°C to +105°C ambient temperature. This rating applies to the 68-pin QFN package variant (AZI suffix) and is validated per Infineon's thermal characterization under specified PCB layout and airflow conditions.
Can the SAR ADC perform simultaneous sampling on multiple channels?
No, the 12-bit SAR ADC has a single sample-and-hold circuit and sequencer; it performs sequential conversions across up to 16 channels at up to 806 Ksps aggregate rate. True simultaneous sampling requires external parallel ADCs or PSoC™ 6 devices with dual ADCs.
Is PSoC™ Creator the only supported IDE for this device?
PSoC™ Creator is the primary and officially supported IDE for CY8C4125AZI-M433, providing schematic-based design entry and automatic analog/digital routing. While GCC-based toolchains (e.g., ModusToolbox™) support later PSoC™ 4 families, they do not support the 4100M series - Creator remains mandatory for full peripheral configuration and CAPSENSE™ tuning.
CY8C4125AZI-M433 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-M433 FAQ
1.How can I place an order for CY8C4125AZI-M433 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4125AZI-M433 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-M433 reliable?
The price and inventory of CY8C4125AZI-M433 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4125AZI-M433 is usually 5 days.
3.What payment methods are accepted for CY8C4125AZI-M433?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4125AZI-M433 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4125AZI-M433?
CY8C4125AZI-M433 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4125AZI-M433 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-M433?
For technical support, including CY8C4125AZI-M433 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4125AZI-M433 requirements.
6.How does Aetrix verify that CY8C4125AZI-M433 is sourced from the original manufacturer or authorized distributors?
All CY8C4125AZI-M433 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-M433 meets industry standards.
7.What is the process for return or replacement of CY8C4125AZI-M433?
All CY8C4125AZI-M433 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4125AZI-M433, 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-M433 part is unused and in its original packaging.
Return procedure for CY8C4125AZI-M433:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CY8C4125AZI-M433 Tags
-
ATTINY4-TSHR
Microchip Technology
-
ATTINY10-TSHR
Microchip Technology
-
ATTINY10-TS8R
Microchip Technology
-
ATTINY202-SSNR
Microchip Technology
-
ATTINY202-SSFR
Microchip Technology
-
ATTINY402-SSNR
Microchip Technology
-
PIC16F15213T-I/MF
Microchip Technology
-
PIC16F15213-E/MF
Microchip Technology
-
PIC10F200T-I/OT
Microchip Technology
-
ATTINY412-SSNR
Microchip Technology
-
PIC10F202T-I/OT
Microchip Technology
-
ATTINY404-SSNR
Microchip Technology
Tech Hub
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
Engineering guide to Raspberry Pi alternatives, covering chip-level differences, Orange Pi, ROCK, Jetson, Banana Pi, NanoPi, Compute Module, Pico, GPIO, camera, HAT compatibility, and replacement risks…
Engineering guide to dynamic load response testing for high-current buck converters, covering load step setup, slew rate, Vcore undershoot, overshoot, recovery time, probe location, output capacitors a…
Engineering guide to output capacitor selection for ASIC Vcore rails, covering bulk capacitors, polymer capacitors, MLCC decoupling, DC bias, ESR, ESL, placement, transient response and substitution ri…
Engineering guide to high-current ASIC Vcore rails, covering 12-phase buck architecture, PMBus control, dynamic load testing, output capacitor networks, smart power stage selection, thermal design and …
Voltage regulator guide covering linear, LDO, 7805, Zener, adjustable, buck, VRM and alternator regulators, with design checks, testing methods, troubleshooting and datasheet-based selection.
Amplifier guide covering voltage, current and power amplification, gain, feedback, amplifier classes, audio and RF applications, op-amp circuits, transimpedance amplifiers, datasheet selection and trou…
