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Infineon Technologies CY8C4125LQI-483
- Part No.:
- CY8C4125LQI-483
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 40-UFQFN Exposed Pad
- Datasheet:
-
CY8C4125LQI-483.pdf
- Description:
- IC MCU 32BIT 32KB FLASH 40QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,493
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Product details
Overview
CY8C4125LQI-483 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 SAR ADC, two opamps, and two SCBs supporting I²C/SPI/UART. It delivers 24 MHz CPU performance with up to 32 kB flash and 4 kB SRAM, operating from 1.71 V to 5.5 V across –40 °C to +105 °C industrial temperature range.
For engineers reviewing the CY8C4125LQI-483 datasheet, CY8C4125LQI-483 pinout, CY8C4125LQI-483 application, or CY8C4125LQI-483 equivalent, key selection criteria include its integrated CapSense® sigma-delta engine, Deep Sleep mode with 20-nA current draw, programmable GPIO drive modes, TCPWM kill-signal triggering for motor control, and SWD debug interface compatibility with industry-standard Arm tools.
Technical Context
The device implements a single-layer AHB-Lite interconnect between Cortex-M0 CPU, SRAM, flash with read accelerator, and peripheral subsystems including CTBm (Capacitive Sensing), SAR ADC, TCPWM, SCBs, and LP comparators. All analog and digital resources are routed via a high-speed I/O matrix enabling dynamic reconfiguration without hardware changes.
Its power architecture supports five operational modes-Active, Sleep, Deep Sleep, Hibernate, and Stop-with dedicated clock gating, independent IMO/ILO oscillators, and brown-out detection. Debug is implemented via Serial Wire Debug (SWD) with four breakpoint and two watchpoint comparators, fully compatible with standard Arm toolchains.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M0 @ 24 MHz with single-cycle 32-bit multiply - enables deterministic real-time control and binary upward compatibility with Cortex-M3/M4. |
| Flash / SRAM | 32 kB flash with Read Accelerator; 4 kB SRAM - supports firmware storage with zero-wait-state execution at max frequency and data retention in Hibernate mode. |
| Analog Peripherals | 12-bit 806 ksps SAR ADC with channel sequencer & signal averaging; two opamps with comparator/ADC buffer modes - enables precision sensor acquisition and analog signal conditioning on any GPIO. |
| Digital Peripherals | Two reconfigurable SCBs (I²C/SPI/UART); four 16-bit TCPWM blocks with center-aligned/PWM/kill-signal modes - provides flexible communication and timing control for motor drives and industrial interfaces. |
| Power Modes | 20 nA Stop Mode with GPIO wakeup; Deep Sleep with LCD drive active - allows ultra-low-power operation while retaining critical functionality like capacitive touch or segment display. |
| Operating Range | 1.71 V to 5.5 V supply; –40 °C to +105 °C ambient - ensures robust operation across battery-powered, industrial, and automotive-adjacent environments. |
| GPIO | Up to 36 programmable pins with configurable drive strength, slew rate, and analog/digital/CapSense/LCD roles - eliminates external level shifters and simplifies PCB routing for mixed-signal designs. |
Pinout & Package
CY8C4125LQI-483 is housed in a 48-pin TQFP (Thin Quad Flat Package) with 0.5 mm pitch, exposing all core peripherals including VDD/VSS rails, SWD debug pins (SWDIO/SWCLK), reset (XRES), analog reference (VREF), and full GPIO bank access.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Single 1.71–5.5 V supply rail; multiple VSS pins ensure low-noise analog/digital separation. |
| SWDIO, SWCLK | Serial Wire Debug interface | Two-pin debug path supporting full programming, tracing, and breakpoint debugging without JTAG overhead. |
| XRES | External reset input | Active-low asynchronous reset pin with internal pull-up; accepts 1.2–5.5 V logic levels. |
| P0[0]–P0[7], P1[0]–P1[7], P2[0]–P2[7], P3[0]–P3[7], P4[0]–P4[7] | Programmable GPIO bank | All 36 pins support CapSense®, analog input/output, LCD segment/common, and digital communication functions via software configuration. |
| VREF | Analog reference voltage input | Accepts external reference (1.024 V to VDD) or internal bandgap for precise ADC/DAC scaling. |
| XTAL_IN/XTAL_OUT | External crystal oscillator connection | Supports optional 1–33 MHz crystal for high-accuracy timing; not required for operation (IMO provides 24 MHz internal clock). |
Key Features
| Feature | Design Value |
|---|---|
| CapSense® Sigma-Delta (CSD) | Hardware-accelerated capacitive sensing with >5:1 SNR and water-tolerant operation - enables robust touch buttons/sliders without firmware filtering overhead. |
| SmartSense™ Auto-Tuning | On-the-fly calibration of CapSense parameters during runtime - eliminates manual tuning and maintains sensitivity across temperature/humidity drift. |
| Programmable Analog Routing | Opamp outputs and ADC inputs routable to any GPIO via CTBm - allows flexible sensor front-end design without fixed signal paths. |
| TCPWM Kill Input | Dedicated comparator-triggered hardware kill signal for PWM outputs - prevents shoot-through in motor gate drivers with sub-microsecond response. |
| Flash Security Modes | Open/Protected/Kill protection levels with row-level read/write locks - enforces IP protection and prevents unauthorized firmware extraction or partial erase attacks. |
Applications
| Industrial HMI Panels | Smart Home Sensor Nodes |
|---|---|
Use Scenario: Touch-enabled control panels for PLCs, HVAC controllers, and factory HMIs requiring reliable operation in noisy EMI environments. IC Role / Device Role / Timing Role: Primary system controller managing CapSense® touch interface, local LCD display, RS-485/UART communication, and real-time motor feedback processing. Use Value: Integrated CSD engine and Deep Sleep with GPIO wakeup enable responsive touch at <20 µA average current, extending panel battery life beyond 5 years. | Use Scenario: Battery-powered environmental sensors (temp/humidity/motion) deployed in residential IoT gateways and smart lighting systems. IC Role / Device Role / Timing Role: Low-power system-on-chip handling analog sensor conditioning, BLE UART bridging, and wake-on-motion event generation. Use Value: 20-nA Stop Mode with pin-triggered wake and integrated 12-bit ADC reduce system standby power by 98% versus discrete MCU+ADC solutions. |
| Motor Control Subsystems | Medical Diagnostic Handhelds |
Use Scenario: Compact BLDC motor drivers in cordless power tools and small appliances where space and thermal constraints limit component count. IC Role / Device Role / Timing Role: Real-time motion controller executing FOC algorithms, generating three-phase PWM, and monitoring overcurrent via comparator-triggered TCPWM kill. Use Value: Hardware kill signal reduces fault response latency to <100 ns, preventing MOSFET destruction during short-circuit events. | Use Scenario: Portable diagnostic devices (e.g., pulse oximeters, glucose meters) requiring clinical-grade analog accuracy and regulatory-compliant firmware security. IC Role / Device Role / Timing Role: Mixed-signal controller acquiring analog biosignals, running FDA-aligned encryption routines, and driving segmented LCD displays in Deep Sleep. Use Value: On-chip flash Kill mode and ROM-based bootloader meet IEC 62304 Class B software lifecycle requirements without external secure elements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable mixed-signal microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY8C4025LQI-482 | Same PSoC 4100 architecture but with 16 kB flash, 2 kB SRAM, and no CapSense® CSD block - lacks hardware sigma-delta engine and SmartSense™. | Suitable for cost-sensitive control-only tasks without touch interface; cannot replace CY8C4125LQI-483 in CapSense®-dependent designs. | Select only when touch functionality is absent and memory footprint is constrained below 16 kB. |
| STM32F072RBT6 | Arm Cortex-M0 MCU with 128 kB flash, 16 kB SRAM, but no integrated CapSense® or programmable analog routing - requires external components for touch or precision analog front-ends. | Applicable where high flash density and USB connectivity are prioritized over analog integration and ultra-low-power touch. | Choose when USB device support or larger code space outweighs need for on-die analog reconfigurability and sub-µA sleep. |
Compared with CY8C4025LQI-482 and STM32F072RBT6, CY8C4125LQI-483 uniquely combines CapSense® hardware acceleration, programmable analog routing, and 20-nA Stop Mode - making it optimal for compact, touch-enabled, battery-constrained embedded systems where analog flexibility and security are design-critical.
Availability
CY8C4125LQI-483 is available at Aetrix Electronics and suitable for industrial HMI panels, smart home sensor nodes, motor control subsystems, and medical diagnostic handhelds requiring stable component supply, long-term lifecycle assurance, and qualified industrial temperature grade performance.
Supply support for CY8C4125LQI-483 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 global semiconductor leader headquartered in Munich, Germany, specializing in power management, automotive ICs, and secure microcontrollers with emphasis on reliability, safety, and energy efficiency.
CY8C4125LQI-483 belongs to the PSoC® 4100 product line - designed specifically for cost-optimized, mixed-signal embedded applications demanding programmable analog/digital integration, ultra-low-power operation, and rapid prototyping via PSoC Creator IDE.
FAQ
Does CY8C4125LQI-483 support USB communication?
No. CY8C4125LQI-483 does not include a USB PHY or USB controller. Its serial communication is limited to two SCBs configurable as I²C, SPI, or UART. For USB connectivity, designers must add an external USB-to-UART bridge IC or select a PSoC 4200M or PSoC 6 device with native USB support.
Can the internal opamps drive external loads directly?
Yes - each opamp supports high-drive external mode capable of sourcing/sinking ±25 mA at unity gain into resistive loads, and operates up to 5.5 V supply. However, output swing is rail-to-rail only under light load; heavy capacitive loads require external isolation to maintain stability per the TRM guidelines.
What debug tools are compatible with CY8C4125LQI-483?
CY8C4125LQI-483 uses standard Arm Serial Wire Debug (SWD) protocol. It is fully supported by Cypress/Infineon's KitProg2 and MiniProg3 programmers, as well as third-party tools including Segger J-Link, ST-Link v2 (in SWD mode), and OpenOCD-based debuggers - provided SWD pin connections and voltage levels match.
Is the CapSense® functionality certified for IEC 61000-4-3/6 immunity testing?
Yes - Cypress/Infineon provides CapSense® design guides (e.g., AN85951) and layout recommendations validated to meet IEC 61000-4-3 (radiated RF immunity) and IEC 61000-4-6 (conducted RF immunity) up to 10 V/m and 10 V respectively when implemented per specified PCB stackup, shield grounding, and firmware filtering settings.
CY8C4125LQI-483 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 40-UFQFN Exposed Pad
- Series:
- PSOC™ 4 CY8C4100
- Packaging:
- Bulk
- 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:
- 34
- 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 2xIDAC
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY8C4125LQI-483 FAQ
1.How can I place an order for CY8C4125LQI-483 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4125LQI-483 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 CY8C4125LQI-483 reliable?
The price and inventory of CY8C4125LQI-483 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4125LQI-483 is usually 5 days.
3.What payment methods are accepted for CY8C4125LQI-483?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4125LQI-483 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4125LQI-483?
CY8C4125LQI-483 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4125LQI-483 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 CY8C4125LQI-483?
For technical support, including CY8C4125LQI-483 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4125LQI-483 requirements.
6.How does Aetrix verify that CY8C4125LQI-483 is sourced from the original manufacturer or authorized distributors?
All CY8C4125LQI-483 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 CY8C4125LQI-483 meets industry standards.
7.What is the process for return or replacement of CY8C4125LQI-483?
All CY8C4125LQI-483 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4125LQI-483, 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 CY8C4125LQI-483 part is unused and in its original packaging.
Return procedure for CY8C4125LQI-483:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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