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Infineon Technologies CY8C4145AXI-S423
- Part No.:
- CY8C4145AXI-S423
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 44-LQFP
- Datasheet:
-
CY8C4145AXI-S423.pdf
- Description:
- IC MCU 32BIT 32KB FLASH 44TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,229
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Product details
Overview
CY8C4145AXI-S423 from Infineon is a programmable 32-bit Arm® Cortex®-M0+ microcontroller with 48 MHz CPU, 64 KB flash, 8 KB SRAM, integrated CAPSENSE™ capacitive sensing, and reconfigurable analog/digital blocks. It supports deep-sleep operation at 2.5 µA digital current, features three reconfigurable serial communication blocks (I²C/SPI/UART), and delivers >5:1 SNR in wet environments - deployed in industrial HMI touch panels and battery-powered consumer interfaces.
For engineers reviewing the CY8C4145AXI-S423 datasheet, CY8C4145AXI-S423 pinout, CY8C4145AXI-S423 application, or CY8C4145AXI-S423 equivalent, key selection considerations include its 36 GPIO with CAPSENSE™/analog/digital flexibility, 12-bit 1-Msps SAR ADC with sequencer and averaging, TCPWM kill-signal triggering for motor control, and SmartSense™ automatic hardware tuning for robust touch design.
Technical Context
The device integrates a single-core Arm® Cortex®-M0+ CPU with single-cycle multiply, coupled to a unified memory map supporting up to 64 KB flash (with read accelerator) and 8 KB SRAM. Its analog subsystem includes two opamps operable in Deep Sleep, a 12-bit SAR ADC with differential/single-ended modes and channel sequencer, and two low-power comparators - all accessible via programmable routing.
Digital resources comprise five 16-bit TCPWM blocks (supporting center-aligned, edge-aligned, and pseudo-random PWM), three SCBs configurable as I²C/SPI/UART, and programmable logic blocks enabling Boolean operations on port signals. Clock sources include ±2% IMO, 32 kHz ILO, and WCO - enabling precise timing across sleep/wake transitions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm® Cortex®-M0+ @ 48 MHz with single-cycle multiply - enables real-time control and firmware-based signal processing without external co-processors. |
| Memory | 64 KB flash (with read accelerator) + 8 KB SRAM - sufficient for complex CAPSENSE™ firmware, communication stacks, and sensor fusion algorithms. |
| ADC | 12-bit SAR ADC, 1 Msps, with channel sequencer and signal averaging - supports high-accuracy multi-channel sensor acquisition with noise suppression. |
| Capacitive Sensing | CAPSENSE™ sigma-delta engine with >5:1 SNR and water tolerance - enables reliable touch detection on wet or contaminated surfaces. |
| Low-Power Operation | Deep Sleep mode with 2.5 µA digital system current and operational analog blocks - extends battery life in portable HMIs and IoT endpoints. |
| GPIO & Routing | 36 programmable GPIO pins with full CAPSENSE™/analog/digital capability and flexible drive modes - eliminates external level shifters or dedicated touch controllers. |
| PWM/Timing | Five 16-bit TCPWM blocks with comparator-triggered kill signals - supports safe, responsive motor gate control and LED dimming with hardware fault response. |
Pinout & Package
Package: 48-pin TQFP (7 mm × 7 mm, 0.5 mm pitch), RoHS-compliant, lead-free, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Core & I/O supply | 1.71–5.5 V input; powers digital logic, analog blocks, and GPIO; supports single-rail system design. |
| VSS | Digital ground | Reference return path for digital circuitry; must be low-impedance and separated from analog ground where precision sensing is required. |
| P0[0]–P0[7] | Programmable GPIO | Support CAPSENSE™, analog input/output, digital I/O, and SCB functions; configurable slew rate and drive strength per pin. |
| P1[0]–P1[7] | Programmable GPIO | Same capabilities as P0; enables full 36-pin utilization including TCPWM capture/compare and quadrature decoder inputs. |
| XRES | Active-low reset | Asynchronous reset input; internal pull-up ensures valid state on power-up; compatible with external reset supervisors. |
| SWDCLK / SWDIO | Debug interface | Two-pin Serial Wire Debug interface for programming and real-time debugging; operates during all power modes except Hibernate. |
Key Features
| Feature | Design Value |
|---|---|
| SmartSense™ Auto-Tuning | Hardware-accelerated CAPSENSE™ calibration eliminates manual tuning; adapts to environmental drift and electrode aging without host CPU intervention. |
| Reconfigurable SCBs | Three serial blocks dynamically switch between I²C, SPI, and UART protocols at runtime - reduces BOM count and simplifies firmware updates across interface variants. |
| Deep Sleep Analog Retention | Opamps, comparators, and SAR ADC remain active in Deep Sleep at 2.5 µA - enables wake-on-touch or wake-on-threshold events without full MCU wake-up latency. |
| Programmable Logic Blocks | Boolean logic (AND/OR/XOR/NOT) applied directly to GPIO signals - implements glue logic, debouncing, or interrupt pre-conditioning in hardware, offloading CPU. |
| LCD Segment Drive | Direct GPIO-based LCD segment driving (up to 32 segments) - eliminates external LCD driver IC in cost-sensitive display applications like thermostats and meters. |
Applications
| Industrial HMI Panels | Smart Home Touch Controls |
|---|---|
|
Use Scenario: Wall-mounted HVAC controller with waterproof touch overlay and local display. IC Role / Device Role / Timing Role: Main MCU handling CAPSENSE™ button detection, temperature sensor ADC acquisition, and 4-digit LCD segment drive. Use Value: Single-chip integration replaces separate touch controller + MCU + LCD driver; SmartSense™ maintains reliability under condensation. |
Use Scenario: Battery-powered smart light switch with gesture-capable touch surface and BLE connectivity. IC Role / Device Role / Timing Role: System-on-chip managing ultra-low-power wake-on-touch, SAR ADC for ambient light sensing, and SPI interface to BLE module. Use Value: 2.5 µA Deep Sleep current extends 2-year battery life; reconfigurable SCB simplifies BLE firmware update over UART/SPI. |
| Medical Patient Interfaces | Appliance Control Panels |
|
Use Scenario: Disinfectant-resistant touch panel on infusion pump with audible feedback and status LEDs. IC Role / Device Role / Timing Role: Real-time CAPSENSE™ processing with comparator-triggered TCPWM kill signals for safety-critical LED strobing and buzzer timing. Use Value: Hardware-based kill signal ensures immediate visual/audio response to user input - meets IEC 62304 Class B timing requirements. |
Use Scenario: Washing machine control board with rotary encoder emulation, motor PWM, and water-tolerant touch keys. IC Role / Device Role / Timing Role: Simultaneous quadrature decoding, 5-channel TCPWM motor control, and CAPSENSE™ with >5:1 SNR under detergent residue. Use Value: Eliminates mechanical encoders and discrete motor drivers; sigma-delta sensing tolerates conductive film contamination. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable microcontroller with integrated capacitive sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY8C4045LQI-S412 | Lower memory (32 KB flash / 4 KB SRAM); no SmartSense™ auto-tuning; same 48 MHz M0+ core and CAPSENSE™ sigma-delta engine. | Suitable for simpler touch-only applications without firmware-intensive sensor fusion or communication stacks. | Select when BOM cost reduction is critical and feature set can be scaled down without compromising touch robustness. |
| STM32G031K8T6 | No integrated CAPSENSE™; requires external touch controller or software-based sensing; higher 64 MHz Cortex-M0+ clock but lacks analog reconfigurability. | Better suited for non-touch applications needing more GPIO or USB, but adds design complexity and SNR risk in wet environments. | Choose only if existing STM32 toolchain familiarity outweighs CAPSENSE™ performance, power, and integration benefits. |
Compared with CY8C4145AXI-S423, CY8C4045LQI-S412 trades memory and SmartSense™ for lower unit cost in basic touch HMI, while STM32G031K8T6 shifts sensing responsibility to software or external ICs - increasing BOM count, power, and development effort for equivalent water-tolerant performance.
Availability
CY8C4145AXI-S423 is available at Aetrix Electronics and suitable for industrial HMI panels, smart home touch controls, medical patient interfaces, and appliance control panels requiring stable component supply, long-term lifecycle support, and qualified automotive-grade traceability.
Supply support for CY8C4145AXI-S423 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 secure connectivity solutions, with global manufacturing and quality certification to ISO 9001 and IATF 16949.
CY8C4145AXI-S423 belongs to the PSoC™ 4100S product line - designed specifically for cost-sensitive, ultra-low-power embedded systems requiring integrated capacitive touch, analog signal conditioning, and field-programmable digital logic without external components.
FAQ
Does CY8C4145AXI-S423 support USB connectivity?
No. CY8C4145AXI-S423 does not include a USB PHY or controller. It provides three reconfigurable serial communication blocks (SCBs) supporting I²C, SPI, and UART only. For USB host or device functionality, an external USB-to-UART bridge (e.g., CP2102) or migration to a PSoC™ 4 BLE or PSoC™ 6 device is required.
What development tools are officially supported for this part?
Infineon officially supports ModusToolbox™ 3.x for CY8C4145AXI-S423, including the PDL peripheral driver library, CAPSENSE™ Tuner, and BSPs for common evaluation kits. Legacy PSoC™ Creator IDE is deprecated but still functional for existing projects; new designs should use ModusToolbox™ with GCC or Arm Compiler 6.
Can the SAR ADC perform simultaneous sampling across multiple channels?
No. The 12-bit SAR ADC has a single conversion core and uses a hardware channel sequencer to cycle through up to 16 inputs. It supports signal averaging per channel and differential/single-ended modes, but true simultaneous sampling requires external parallel ADCs or a higher-tier PSoC™ 6 device with dual SAR engines.
Is the 48-pin TQFP package RoHS and REACH compliant?
Yes. CY8C4145AXI-S423 in the 48LD TQFP package is fully RoHS Directive 2011/65/EU compliant and meets REACH Regulation (EC) No. 1907/2006 requirements, including SVHC screening. Certificate of Compliance and material declarations are available via Infineon's Quality Portal using the full orderable part number.
CY8C4145AXI-S423 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 44-LQFP
- Series:
- PSOC™ 4 CY8C4100S
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M0+
- Core Size:
- 32-Bit Single-Core
- Speed:
- 48MHz
- 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:
- 36
- 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, 16x12b SAR; D/A 2xIDAC
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY8C4145AXI-S423 FAQ
1.How can I place an order for CY8C4145AXI-S423 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4145AXI-S423 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 CY8C4145AXI-S423 reliable?
The price and inventory of CY8C4145AXI-S423 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4145AXI-S423 is usually 5 days.
3.What payment methods are accepted for CY8C4145AXI-S423?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4145AXI-S423 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4145AXI-S423?
CY8C4145AXI-S423 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4145AXI-S423 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 CY8C4145AXI-S423?
For technical support, including CY8C4145AXI-S423 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4145AXI-S423 requirements.
6.How does Aetrix verify that CY8C4145AXI-S423 is sourced from the original manufacturer or authorized distributors?
All CY8C4145AXI-S423 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 CY8C4145AXI-S423 meets industry standards.
7.What is the process for return or replacement of CY8C4145AXI-S423?
All CY8C4145AXI-S423 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4145AXI-S423, 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 CY8C4145AXI-S423 part is unused and in its original packaging.
Return procedure for CY8C4145AXI-S423:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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