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Infineon Technologies CY8C4125LTI-M445
- Part No.:
- CY8C4125LTI-M445
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 68-VFQFN Exposed Pad
- Datasheet:
-
CY8C4125LTI-M445.pdf
- Description:
- IC MCU 32BIT 32KB FLASH 68QFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,194
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Product details
Overview
CY8C4125LTI-M445 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 mode at 20 nA and operates across –40°C to +105°C, targeting industrial HMI, sensor nodes, and touch-enabled embedded controls.
For engineers reviewing the CY8C4125LTI-M445 datasheet, CY8C4125LTI-M445 pinout, CY8C4125LTI-M445 application, or CY8C4125LTI-M445 equivalent, key selection criteria include integrated CSD performance, analog reconfigurability in ultra-low-power modes, TCPWM flexibility for motor control timing, and GPIO programmability across LCD, CAPSENSE™, and analog functions.
Technical Context
The device implements a tightly coupled MCU subsystem with DMA engine and automatic routing between programmable analog (opamps, IDACs, SAR ADC) and digital blocks (TCPWM, SCB). Its clock system combines IMO (24 MHz), ILO (32.768 kHz), and external crystal support for precise timing across active and low-power states.
Capacitive sensing uses Infineon's proprietary Capacitive Sigma-Delta (CSD) architecture with hardware-accelerated SmartSense tuning and water-tolerant operation. Analog peripherals remain functional in Deep Sleep mode, enabling wake-on-touch with sub-μA quiescent current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm® Cortex®-M0 @ 24 MHz with single-cycle multiply - enables real-time control loops without software overhead. |
| Memory | 128 kB flash + 16 kB SRAM - sufficient for complex firmware with bootloader, CAPSENSE™ library, and communication stacks. |
| ADC | 12-bit SAR ADC @ 806 Ksps - supports high-resolution sensor acquisition with configurable input buffering and PGA gain. |
| Opamps | 4 rail-to-rail opamps operable in Deep Sleep - enable always-on signal conditioning with <1 μA per amplifier. |
| Power Modes | 20 nA Stop Mode with GPIO wakeup - allows battery-powered devices to achieve multi-year shelf life. |
| CAPSENSE™ | CSD-based capacitive sensing with >5:1 SNR and automatic hardware tuning - delivers robust touch detection under moisture or EMI stress. |
| TCPWM | 8 × 16-bit timer/counter/PWM blocks with center-aligned, edge-aligned, and pseudo-random modes - supports motor FOC, LED dimming, and precision timing triggers. |
Pinout & Package
This device is packaged in a 44-pin TQFP (7 mm × 7 mm, 0.8 mm pitch) with 38 GPIOs supporting configurable analog/digital/CAPSENSE™/LCD functions.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Core & I/O supply | 1.71–5.5 V input; powers all digital logic, analog blocks, and GPIO drivers. |
| VSS | Ground reference | Dedicated analog/digital ground plane connection required for noise-sensitive SAR ADC and CSD operation. |
| XRES | Active-low reset input | Asynchronous hardware reset with internal pull-up; debounced externally for reliable power-on sequencing. |
| SWDCLK / SWDIO | Debug interface | Two-pin Serial Wire Debug interface for programming, real-time trace, and low-overhead firmware updates. |
| P0[0]–P0[7] | Programmable GPIO | Support CAPSENSE™, analog input/output, LCD segment/common, or digital I/O with configurable drive strength and slew rate. |
Key Features
| Feature | Design Value |
|---|---|
| Reconfigurable analog blocks | Four opamps with comparator, ADC buffer, and high-current drive modes - eliminate external signal-conditioning ICs in sensor front-ends. |
| Hardware-accelerated CSD | Capacitive Sigma-Delta engine with SmartSense auto-tuning - reduces firmware development time by >70% vs. manual calibration. |
| Deep Sleep analog retention | Opamps, comparators, and CSD operate at <1 μA total - enables wake-on-touch with <2 μs response latency. |
| Flexible serial interfaces | Four SCBs supporting runtime-reconfigurable I²C/SPI/UART - simplifies protocol adaptation without PCB redesign. |
| Segment LCD driver | Direct drive on all GPIO pins with 4-bit memory per pin in Deep Sleep - supports 4×32-segment displays without external glass drivers. |
Applications
| Industrial HMI Panels | Smart Sensor Nodes |
|---|---|
Use Scenario: Touch-enabled operator interface on factory-floor equipment with dust/moisture exposure. IC Role / Device Role / Timing Role: Primary controller managing CAPSENSE™ buttons, segment LCD display, and RS-485 communication via SCB. Use Value: CSD's water tolerance and >5:1 SNR ensure reliable touch detection in harsh environments without mechanical switches or overlays. |
Use Scenario: Battery-powered environmental monitor logging temperature, humidity, and vibration data. IC Role / Device Role / Timing Role: System-on-chip handling analog sensor conditioning (opamp + SAR ADC), low-power data aggregation, and BLE-ready UART output. Use Value: 20-nA Stop Mode and Deep Sleep analog retention extend battery life to >5 years on a single CR2032 cell. |
| Motor Control Interfaces | Medical Device UIs |
Use Scenario: Compact motor driver board requiring PWM timing, fault monitoring, and local touch feedback. IC Role / Device Role / Timing Role: Real-time controller generating center-aligned PWM signals (via TCPWM), sampling current sense resistors (SAR ADC), and detecting overcurrent (comparator-triggered Kill). Use Value: Hardware-synchronized Kill signal propagation (<100 ns) ensures safe shutdown during short-circuit events. |
Use Scenario: Portable diagnostic tool with tactile buttons, segmented display, and ESD-safe front panel. IC Role / Device Role / Timing Role: CAPSENSE™-based sealed-button interface with haptic feedback timing, LCD refresh, and USB CDC communication. Use Value: Integrated opamp-based ESD protection on GPIOs eliminates discrete TVS diodes while maintaining IEC 61000-4-2 Level 4 compliance. |
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-S403 | Lower memory (32 kB flash / 4 kB SRAM); no CSD block; only 2 opamps | Suitable for basic GPIO + UART control, not capacitive sensing or analog-intensive designs | Select when cost sensitivity outweighs need for advanced analog or touch capability. |
| STM32G071KBT6 | No integrated CAPSENSE™ or programmable analog; requires external opamps/IDACs for similar functionality | Requires additional BOM components and layout area for touch/analog signal chain | Choose when leveraging existing STM32 ecosystem tools and prefer fixed-function peripheral consistency over configurability. |
Compared with CY8C4025LQI-S403 and STM32G071KBT6, CY8C4125LTI-M445 uniquely integrates hardware-accelerated capacitive sensing, Deep Sleep analog retention, and field-reconfigurable analog/digital blocks-reducing component count, layout complexity, and firmware development effort for touch-enabled industrial systems.
Availability
CY8C4125LTI-M445 is available at Aetrix Electronics and suitable for industrial HMI panels, smart sensor nodes, and motor control interfaces requiring stable component supply, extended temperature support (–40°C to +105°C), and long-term lifecycle assurance.
Supply support for CY8C4125LTI-M445 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 MCUs, and programmable mixed-signal solutions with global manufacturing and quality certification (IATF 16949, ISO 9001).
The PSoC™ 4100M product line targets cost-sensitive industrial and consumer applications requiring field-programmable analog/digital integration, ultra-low-power operation, and rapid prototyping via PSoC™ Creator IDE.
FAQ
Does CY8C4125LTI-M445 support USB connectivity?
No, CY8C4125LTI-M445 does not integrate a USB PHY or controller. It supports UART, I²C, and SPI through its four SCB modules. For USB host/device functionality, external bridge ICs (e.g., CP2102N or FT232H) must be used with GPIO or SCB-based UART bridging.
What is the maximum operating frequency of the SAR ADC?
The SAR ADC achieves a maximum conversion rate of 806 Ksps at 12-bit resolution with internal reference and full-scale input range. Throughput drops to 500 Ksps when using external reference or PGA gain settings above 4× due to settling time constraints.
Can the opamps drive capacitive loads directly?
Yes - all four opamps support programmable high-current output mode (up to 25 mA) and are characterized for stable operation with ≥100 pF capacitive loads, enabling direct driving of LCD segments or capacitive touch electrodes without external buffers.
Is SmartSense tuning compatible with custom PCB layouts?
Yes - SmartSense automatically adjusts CSD parameters (IDAC current, scan resolution, averaging) based on measured electrode capacitance and noise floor. It supports custom layouts with varying trace lengths, overlay thicknesses, and grounding schemes without manual recalibration.
CY8C4125LTI-M445 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 68-VFQFN Exposed Pad
- 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:
- 55
- 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:
CY8C4125LTI-M445 FAQ
1.How can I place an order for CY8C4125LTI-M445 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4125LTI-M445 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 CY8C4125LTI-M445 reliable?
The price and inventory of CY8C4125LTI-M445 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4125LTI-M445 is usually 5 days.
3.What payment methods are accepted for CY8C4125LTI-M445?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4125LTI-M445 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4125LTI-M445?
CY8C4125LTI-M445 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4125LTI-M445 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 CY8C4125LTI-M445?
For technical support, including CY8C4125LTI-M445 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4125LTI-M445 requirements.
6.How does Aetrix verify that CY8C4125LTI-M445 is sourced from the original manufacturer or authorized distributors?
All CY8C4125LTI-M445 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 CY8C4125LTI-M445 meets industry standards.
7.What is the process for return or replacement of CY8C4125LTI-M445?
All CY8C4125LTI-M445 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4125LTI-M445, 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 CY8C4125LTI-M445 part is unused and in its original packaging.
Return procedure for CY8C4125LTI-M445:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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