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Infineon Technologies CY8C4045AXI-S412
- Part No.:
- CY8C4045AXI-S412
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 32-LQFP
- Datasheet:
-
CY8C4045AXI-S412.pdf
- Description:
- IC MCU 32BIT 32KB FLASH 32LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,311
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Product details
Overview
CY8C4045AXI-S412 from Infineon is a 32-bit Arm® Cortex®-M0+ microcontroller with 48 MHz CPU, 32 KB flash, 4 KB SRAM, integrated CAPSENSE™ capacitive sensing, two SCBs supporting I²C/SPI/UART, and five 16-bit TCPWM blocks. It operates from 1.71–5.5 V and supports Deep Sleep mode at 2.5 µA digital current. Used in touch-enabled industrial HMI and smart sensor nodes requiring low-power reconfigurable mixed-signal control.
For engineers reviewing the CY8C4045AXI-S412 datasheet, CY8C4045AXI-S412 pinout, CY8C4045AXI-S412 application, or CY8C4045AXI-S412 equivalent, key selection criteria include CAPSENSE™ SNR (>5:1), programmable analog/digital routing, SWD debug interface compatibility, and 48-pin TQFP package footprint alignment with PSoC™ 4000S platform scalability.
Technical Context
The device implements a single-layer AHB-Lite interconnect between Cortex®-M0+ core, memory subsystem (32 KB flash + 4 KB SRAM + 8 KB ROM), and peripherals including two low-power comparators, two IDACs, and CAPSENSE™ v2 sigma-delta engine. Clocking includes IMO (±2%), WCO (32 kHz), and ILO (32 kHz) sources with dynamic switching.
Programmable digital logic uses configurable logic blocks for Boolean operations on GPIOs; analog resources include continuous-time and switched-capacitor blocks. All 36 GPIOs support CAPSENSE™, analog, or digital functions with programmable drive strength, slew rate, and pull-up/down.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm® Cortex®-M0+, 48 MHz with single-cycle multiply - enables deterministic real-time control in motor timing and sensor fusion. |
| Memory | 32 KB flash (with read accelerator), 4 KB SRAM - sufficient for CAPSENSE™ firmware + BLE stack coexistence in compact edge nodes. |
| Capacitive Sensing | CAPSENSE™ v2 sigma-delta engine with >5:1 SNR and SmartSense auto-tuning - delivers robust water-tolerant touch detection without manual calibration. |
| Serial Interfaces | 2 × SCBs, each reconfigurable as I²C/SPI/UART - allows simultaneous host communication and sensor data aggregation without external bridge ICs. |
| Timing/PWM | 5 × 16-bit TCPWM blocks with center-aligned, edge, and pseudo-random modes - supports precise motor phase control and LED dimming with hardware kill signal triggering. |
| Power Modes | Deep Sleep mode draws 2.5 µA digital current while maintaining operational analog - extends battery life in always-on touch interfaces. |
| GPIO Count | 36 programmable pins in 48-pin TQFP package - provides full peripheral mapping flexibility with dedicated LCD segment drive capability. |
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, VSS | Power supply and ground | Supports 1.71–5.5 V operation; decoupling required per datasheet layout guidelines for analog stability. |
| P0[0]–P5[7] | Programmable GPIO | All 36 pins support CAPSENSE™, analog input/output, digital logic, or LCD segment drive - no fixed-function pin constraints. |
| SWDIO / SWCLK | ARM Serial Wire Debug | Two-pin debug interface compatible with standard J-Link, CMSIS-DAP, and MiniProg4 - enables in-system programming and full-chip debugging. |
| XRES | External reset input | Active-low asynchronous reset with internal pull-up; debounced externally for reliable power-on and fault recovery. |
| WCO_IN / WCO_OUT | 32 kHz watch crystal oscillator | Drives precision RTC and low-power sleep timing; requires 12.5 pF load capacitance crystal for ±20 ppm accuracy. |
Key Features
| Feature | Design Value |
|---|---|
| Reconfigurable analog blocks | Continuous-time and switched-capacitor op-amps, comparators, and IDACs usable on any GPIO - eliminate need for external signal-conditioning components in sensor front-ends. |
| Hardware-accelerated CAPSENSE™ | Sigma-delta modulator with >5:1 SNR and automatic SmartSense tuning - achieves production-ready touch performance without firmware-level noise filtering. |
| Runtime-reconfigurable SCBs | Two serial communication blocks independently switchable between I²C, SPI, UART - simplifies BOM by replacing multiple fixed-interface controllers in multi-protocol systems. |
| Programmable digital logic | Boolean logic blocks operating directly on port inputs/outputs - implement custom glue logic (e.g., interrupt arbitration, status encoding) without CPU intervention. |
| Low-power Deep Sleep mode | 2.5 µA system current with active analog and wake-on-CAPSENSE™ - enables multi-year battery life in sealed touch-control enclosures. |
Applications
| Industrial HMI Panels | Smart Appliance Controls |
|---|---|
Use Scenario: Touch-based operator interface on factory HMIs with glove operation and washdown environments. IC Role / Device Role / Timing Role: Primary MCU executing CAPSENSE™ firmware, managing display refresh via GPIO-driven LCD segments, and communicating with PLC over UART. Use Value: Water-tolerant touch detection (>5:1 SNR) and Deep Sleep wake-on-touch reduce power consumption by 70% vs. polling-based alternatives. | Use Scenario: Embedded control unit in refrigerators and washing machines with proximity and slider touch zones. IC Role / Device Role / Timing Role: System controller handling CAPSENSE™ input, motor PWM via TCPWM, and temperature monitoring via IDAC-driven thermistor interface. Use Value: Integrated IDACs and programmable analog eliminate external DACs; SmartSense auto-calibration cuts production test time by 40%. |
| Medical Wearables | IoT Sensor Nodes |
Use Scenario: Battery-powered wearable with capacitive gesture interface and biometric sensor signal conditioning. IC Role / Device Role / Timing Role: Mixed-signal hub acquiring analog sensor data, processing touch gestures, and transmitting via I²C to BLE SoC. Use Value: 2.5 µA Deep Sleep current extends coin-cell life beyond 18 months; reconfigurable SCBs simplify dual-sensor protocol management. | Use Scenario: Environmental monitor using capacitive soil moisture sensing and ambient light measurement. IC Role / Device Role / Timing Role: Edge node MCU performing CAPSENSE™-based moisture detection, ADC sampling, and LoRaWAN packet formatting via SPI. Use Value: On-chip sigma-delta CAPSENSE™ eliminates external RC networks; 32 KB flash accommodates OTA update bootloader and sensor fusion algorithms. |
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 |
|---|---|---|---|
| CY8C4045LQI-S402 | Same core and memory, but 40-pin QFN package (5×5 mm) and no WCO pins - lacks external RTC crystal support. | Preferred for space-constrained PCBs where internal ILO timing suffices and external crystal is unnecessary. | Select when board area is critical and 32 kHz RTC accuracy <±100 ppm is acceptable. |
| CY8C4146AZI-S433 | Higher-spec variant: 64 KB flash, 8 KB SRAM, USB 2.0 FS, and enhanced analog (12-bit SAR ADC) - not pin-compatible. | Required for USB-connected devices or designs needing higher-resolution analog acquisition and larger firmware footprint. | Choose only if USB connectivity or ≥12-bit ADC resolution is mandatory; migration requires PCB redesign. |
Compared with CY8C4045LQI-S402, the CY8C4045AXI-S412 offers WCO support for high-accuracy RTC and larger TQFP footprint for easier prototyping; versus CY8C4146AZI-S433, it trades USB and extra memory for lower cost and smaller code size in touch-only applications.
Availability
CY8C4045AXI-S412 is available at Aetrix Electronics and suitable for industrial HMI panels, smart appliance controls, medical wearables, and IoT sensor nodes requiring stable component supply, long-term lifecycle assurance, and consistent CAPSENSE™ performance across production batches.
Supply support for CY8C4045AXI-S412 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 AG is a German semiconductor manufacturer specializing in power management, automotive MCUs, and secure embedded solutions, with global R&D and manufacturing infrastructure.
The PSoC™ 4000S product line targets cost-sensitive, low-power embedded systems requiring integrated capacitive sensing, reconfigurable analog/digital logic, and Arm®-based firmware flexibility - optimized for human-interface and sensor-edge applications.
FAQ
Does CY8C4045AXI-S412 support USB communication?
No. This part lacks USB physical layer circuitry and associated firmware stack support. USB functionality is available only in higher-tier PSoC™ 4100S and PSoC™ 4200S families. For USB-hosted touch applications, consider CY8C4146AZI-S433 or migrate to PSoC™ 6 series.
What development tools are officially supported for CY8C4045AXI-S412?
Infineon officially supports ModusToolbox™ software (cross-platform, Eclipse-based) and PSoC™ Creator (Windows-only IDE). Both provide CAPSENSE™ Tuner, TCPWM configurator, and SCB setup wizards. Hardware debugging requires MiniProg4 or CMSIS-DAP-compliant probes via SWD interface.
Can CAPSENSE™ operate during Deep Sleep mode?
Yes. The CAPSENSE™ block remains active in Deep Sleep mode with 2.5 µA total system current. Wake-on-touch is hardware-triggered, allowing immediate CPU wake without polling. Configuration requires enabling the CAPSENSE™ interrupt in the low-power mode setup and assigning appropriate GPIOs as sense pins.
Is the 48-pin TQFP package RoHS-compliant and halogen-free?
Yes. CY8C4045AXI-S412 is manufactured in a RoHS-compliant, lead-free, and halogen-free process. The 48-pin TQFP package meets JEDEC J-STD-020 moisture sensitivity level 3 (MSL3) and is qualified for industrial temperature range (–40°C to +85°C).
CY8C4045AXI-S412 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 32-LQFP
- Series:
- PSOC™ 4 CY8C4000S
- 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:
- 27
- 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 1x10b SAR; D/A 2x7b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY8C4045AXI-S412 FAQ
1.How can I place an order for CY8C4045AXI-S412 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4045AXI-S412 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 CY8C4045AXI-S412 reliable?
The price and inventory of CY8C4045AXI-S412 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4045AXI-S412 is usually 5 days.
3.What payment methods are accepted for CY8C4045AXI-S412?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4045AXI-S412 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4045AXI-S412?
CY8C4045AXI-S412 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4045AXI-S412 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 CY8C4045AXI-S412?
For technical support, including CY8C4045AXI-S412 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4045AXI-S412 requirements.
6.How does Aetrix verify that CY8C4045AXI-S412 is sourced from the original manufacturer or authorized distributors?
All CY8C4045AXI-S412 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 CY8C4045AXI-S412 meets industry standards.
7.What is the process for return or replacement of CY8C4045AXI-S412?
All CY8C4045AXI-S412 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4045AXI-S412, 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 CY8C4045AXI-S412 part is unused and in its original packaging.
Return procedure for CY8C4045AXI-S412:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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