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Infineon Technologies CY8C4125AZI-PS423
- Part No.:
- CY8C4125AZI-PS423
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
CY8C4125AZI-PS423.pdf
- Description:
- IC MCU 32BIT 32KB FLASH 48TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,625
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Product details
Overview
CY8C4125AZI-PS423 from Infineon is a PSoC™ 4100PS programmable system-on-chip based on Arm® Cortex®-M0+ CPU running at up to 48 MHz, featuring 32 KB flash, 4 KB SRAM, dual ADCs (12-bit SAR + 10-bit single-slope), CAPSENSE™ sigma-delta capacitive sensing, and 38 GPIOs with Smart I/O capability - deployed in industrial HMI, touch-enabled sensor nodes, and low-power embedded control systems.
For engineers reviewing the CY8C4125AZI-PS423 datasheet, CY8C4125AZI-PS423 pinout, CY8C4125AZI-PS423 application, or CY8C4125AZI-PS423 equivalent, key selection criteria include its integrated analog front-end (2×VDAC, 4×opamp, 2×comparator), Deep-Sleep current of 2.5 µA with active analog, and runtime-configurable SCB peripherals supporting I²C/SPI/UART on three independent channels.
Technical Context
The device implements a tightly coupled mixed-signal architecture where the Arm® Cortex®-M0+ core orchestrates programmable digital logic (TCPWM, SCB) and reconfigurable analog blocks (CTB, SAR ADC, CSD engine) via automatic routing. Its CAPSENSE™ subsystem uses sigma-delta modulation with hardware-accelerated SmartSense™ tuning for robust water-tolerant touch detection.
Power management includes dual supply domains (1.71–5.5 V), Deep-Sleep mode retaining analog functionality and 4 KB SRAM retention, plus dedicated clock sources: IMO (internal main oscillator), ILO (low-power internal), and WCO (watch crystal oscillator) for real-time clock accuracy.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm® Cortex®-M0+ @ up to 48 MHz - enables deterministic real-time control with Thumb-2 instruction set and NVIC interrupt handling. |
| Memory | 32 KB flash (with read accelerator) + 4 KB SRAM - supports firmware updates and data buffering without external memory. |
| Analog Peripherals | 12-bit SAR ADC (1 Msps), 10-bit single-slope ADC, 2×13-bit VDAC, 2×7-bit IDAC, 4×opamp, 2×comparator - enables full AFE implementation on-chip. |
| CAPSENSE™ | Sigma-Delta (CSD) engine with SmartSense™ auto-tuning - delivers >100:1 SNR and immunity to moisture and EMI in touch interfaces. |
| Digital Peripherals | 3×SCB (I²C/SPI/UART configurable), 8×TCPWM (center-aligned PWM, quadrature decode), 8-channel DMA - supports multi-protocol connectivity and motor/sensor timing. |
| Power & Packaging | 1.71–5.5 V operation; Deep-Sleep current = 2.5 µA with analog active; 48-pin QFN package (7×7 mm, 0.5 mm pitch) - suitable for space-constrained battery-powered designs. |
Pinout & Package
CY8C4125AZI-PS423 is housed in a 48-pin QFN package (7 mm × 7 mm, 0.5 mm pitch) with exposed thermal pad. Pin functions are fully configurable via PSoC™ Creator; all GPIOs support analog, digital, CAPSENSE™, or LCD drive roles with programmable drive strength, slew rate, and pull-up/down.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P0[0]–P0[7] | Programmable GPIO bank 0 | Supports CAPSENSE™ CSD, analog input/output, or digital logic with Smart I/O Boolean operations. |
| P1[0]–P1[7] | Programmable GPIO bank 1 | Configurable as SCB interface lines (e.g., I²C SDA/SCL), TCPWM outputs, or VDAC reference pins. |
| P2[0]–P2[7] | Programmable GPIO bank 2 | Can route SAR ADC inputs, opamp terminals, or comparator outputs; includes dedicated WCO connections (XIN/XOUT). |
| VDD/VSS | Power supply / ground | Separate analog/digital power domains; VDDA must be ≥ VDDD for proper ADC/DAC operation. |
| XRES | Active-low reset input | Asynchronous reset with internal pull-up; accepts 1.2–5.5 V logic levels; debounced in hardware. |
Key Features
| Feature | Design Value |
|---|---|
| Reconfigurable Analog Blocks | Four continuous-time opamps and two 13-bit VDACs allow building custom sensor signal chains (e.g., transimpedance amplifier + offset correction) without external components. |
| CAPSENSE™ Sigma-Delta Engine | Hardware-accelerated CSD with >100 dB SNR and automatic SmartSense™ calibration reduces firmware overhead and improves touch reliability under wet conditions. |
| Runtime-Configurable SCBs | Three serial communication blocks can be independently assigned as I²C master/slave, SPI master/slave, or UART - enabling flexible peripheral bridging in field-deployed firmware. |
| Smart I/O Logic | Eight GPIOs support pin-level Boolean operations (AND/OR/XOR) in hardware, offloading simple combinatorial logic from CPU and reducing interrupt latency. |
Applications
| Industrial HMI Panels | Capacitive Touch Remote Controls |
|---|---|
Use Scenario: Wall-mounted HVAC controllers with multi-button touch overlay and LED feedback. IC Role / Device Role / Timing Role: Central MCU executing touch scan, LED PWM dimming, and RS-485 communication via SCB. Use Value: Integrated CAPSENSE™ eliminates external touch controller IC; Deep-Sleep mode extends battery life to >5 years on coin cell. | Use Scenario: Consumer audio remote with gesture-sensitive slider and proximity wake-up. IC Role / Device Role / Timing Role: Touch acquisition and gesture decoding engine using CSD + SmartSense™, with low-power wake-on-proximity. Use Value: Single-chip solution replaces discrete touch IC + microcontroller; 2.5 µA Deep-Sleep current enables 3-year CR2032 operation. |
| Low-Power Sensor Nodes | Programmable Power Supply Controllers |
Use Scenario: Battery-powered environmental monitor measuring temperature, humidity, and ambient light. IC Role / Device Role / Timing Role: Analog front-end manager (SAR ADC + opamp + VDAC for sensor biasing) and BLE host interface via SCB UART. Use Value: On-chip 12-bit SAR ADC and programmable opamp eliminate external signal conditioning; 4 KB SRAM retains sensor logs during sleep. | Use Scenario: Programmable DC-DC module with voltage/current monitoring and fault protection. IC Role / Device Role / Timing Role: Real-time power path supervisor using comparators, IDACs for current sense scaling, and TCPWM for synchronous rectifier timing. Use Value: Dual 7-bit IDACs provide precise current mirror scaling; hardware comparator outputs trigger immediate shutdown (<100 ns response). |
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 blocks; adds 8 KB flash (40 KB total) and 8 KB SRAM (12 KB total); identical 48-pin QFN package. | Better suited for firmware-over-the-air (FOTA) implementations requiring dual-bank flash and larger RAM buffers. | Select when firmware complexity exceeds 32 KB or real-time data logging requires >4 KB buffer space. |
| STM32G071CBT6 | Arm® Cortex®-M0+, 128 KB flash, 36 KB SRAM, but lacks integrated CAPSENSE™, programmable analog blocks, and Smart I/O logic. | Requires external touch controller and analog signal chain components; higher BOM cost and PCB area for equivalent touch + sensing functionality. | Select only if standard peripherals suffice and design team prefers STM32 ecosystem tooling over PSoC™ Creator. |
Compared with CY8C4125AZI-PS423, CY8C4126AZI-S433 offers scalable memory for future firmware growth without changing layout, while STM32G071CBT6 trades integrated mixed-signal flexibility for raw memory headroom and third-party toolchain familiarity - making the former ideal for feature-locked designs and the latter better for pure control-centric applications.
Availability
CY8C4125AZI-PS423 is available at Aetrix Electronics and suitable for industrial HMI panels, capacitive touch remote controls, and low-power sensor nodes requiring stable component supply across multi-year production cycles.
Supply support for CY8C4125AZI-PS423 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 mixed-signal solutions with global manufacturing and R&D infrastructure.
The PSoC™ 4100PS product line targets cost-sensitive, low-power embedded systems requiring integrated analog, capacitive sensing, and flexible digital peripherals - designed to reduce BOM count and accelerate development of touch-enabled edge devices.
FAQ
Does CY8C4125AZI-PS423 support USB connectivity?
No. CY8C4125AZI-PS423 does not include a USB PHY or USB controller. It supports UART, I²C, and SPI through its three SCB modules. For USB host or device functionality, an external USB-to-UART bridge IC (e.g., CP2102N) or migration to PSoC™ 4000S/4100S series with USBFS block is required.
What is the maximum operating temperature for this device?
CY8C4125AZI-PS423 is rated for industrial temperature range: –40 °C to +85 °C. This is confirmed in Section 6.2.1 of the official datasheet (002-22097 Rev. *F), with derating applied above 70 °C for sustained analog performance stability.
Can the 12-bit SAR ADC perform simultaneous sampling on multiple channels?
No. The 12-bit SAR ADC has a single sample-and-hold circuit and supports sequential scanning across up to 16 channels via hardware mux, but not true simultaneous sampling. For synchronized multi-channel acquisition, external analog front-end multiplexing with hold capacitors or use of the separate 10-bit single-slope ADC in parallel is required.
Is PSoC™ Creator still actively supported for this part?
Yes. PSoC™ Creator v4.4 remains the officially supported IDE for CY8C4125AZI-PS423, with full component libraries, device configuration tools, and debug integration. Infineon continues to provide maintenance updates and legacy documentation, though new designs are encouraged to evaluate ModusToolbox™ for future PSoC™ generations.
CY8C4125AZI-PS423 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 48-LQFP
- Series:
- PSOC™ 4 CY8C4100PS
- 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 16x10b Slope, 8x12b SAR; D/A 2xIDAC
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY8C4125AZI-PS423 FAQ
1.How can I place an order for CY8C4125AZI-PS423 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4125AZI-PS423 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-PS423 reliable?
The price and inventory of CY8C4125AZI-PS423 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4125AZI-PS423 is usually 5 days.
3.What payment methods are accepted for CY8C4125AZI-PS423?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4125AZI-PS423 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4125AZI-PS423?
CY8C4125AZI-PS423 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4125AZI-PS423 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-PS423?
For technical support, including CY8C4125AZI-PS423 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4125AZI-PS423 requirements.
6.How does Aetrix verify that CY8C4125AZI-PS423 is sourced from the original manufacturer or authorized distributors?
All CY8C4125AZI-PS423 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-PS423 meets industry standards.
7.What is the process for return or replacement of CY8C4125AZI-PS423?
All CY8C4125AZI-PS423 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4125AZI-PS423, 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-PS423 part is unused and in its original packaging.
Return procedure for CY8C4125AZI-PS423:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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