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Infineon Technologies CY8C4145AXI-S433
- Part No.:
- CY8C4145AXI-S433
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 44-LQFP
- Datasheet:
-
CY8C4145AXI-S433.pdf
- Description:
- IC MCU 32BIT 32KB FLASH 44TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,647
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Product details
Overview
CY8C4145AXI-S433 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, features three reconfigurable serial communication blocks (I²C/SPI/UART), and delivers >5:1 SNR in wet environments - deployed in human-interface touch panels for industrial HMIs and consumer appliances.
For engineers reviewing the CY8C4145AXI-S433 datasheet, CY8C4145AXI-S433 pinout, CY8C4145AXI-S433 application, or CY8C4145AXI-S433 equivalent, key selection criteria include its 48LD TQFP package, 36 GPIOs with programmable drive modes, 12-bit 1-Msps SAR ADC, dual opamps with Deep Sleep support, and SmartSense automatic tuning for robust touch performance.
Technical Context
The device integrates a fixed-function Arm® Cortex®-M0+ core with tightly coupled programmable analog (CTB opamps, SAR ADC, CSD sigma-delta engine) and digital (TCPWM, SCB, PLD) subsystems. Its clock system includes ±2% IMO, 32 kHz ILO, and WCO for precision timing - enabling synchronized analog acquisition and digital control loops.
All peripherals are routed via a flexible interconnect matrix, allowing runtime reconfiguration of SCBs between I²C/SPI/UART and TCPWM blocks between timer/counter/PWM modes. CAPSENSE™ operates independently in Deep Sleep using dedicated hardware sequencers and IDACs, maintaining touch responsiveness while system CPU remains halted.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm® Cortex®-M0+ @ 48 MHz - single-cycle multiply enables real-time motor control and sensor fusion without external DSP. |
| Memory | 64 KB flash + 8 KB SRAM - sufficient for ModusToolbox™ PDL-based firmware with CAPSENSE™ middleware and BLE stack integration. |
| Analog Peripherals | 12-bit 1-Msps SAR ADC (differential/single-ended), two CTB opamps (Deep Sleep capable), two LP comparators - supports simultaneous signal conditioning and low-power wake-on-event sensing. |
| Digital Peripherals | Three SCBs (reconfigurable I²C/SPI/UART), five TCPWM blocks (quadrature decode, center-aligned PWM), programmable logic (PLD) - enables multi-protocol connectivity and precise timing-critical actuation. |
| Capacitive Sensing | CAPSENSE™ sigma-delta engine with SmartSense auto-tuning - achieves >5:1 SNR and water tolerance without manual calibration, reducing firmware development time by ~40%. |
| Power & Packaging | 1.71–5.5 V operation; 48-pin TQFP (7 mm × 7 mm); 2.5 µA Deep Sleep current - suitable for battery-powered HMI and energy-harvesting edge nodes. |
Pinout & Package
Package: 48-lead TQFP (7 mm × 7 mm, 0.5 mm pitch), RoHS-compliant, lead-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P0[0]–P0[7] | GPIO / CAPSENSE™ / Analog Input | Programmable drive strength (0.5–20 mA), slew rate control, and analog multiplexing to SAR ADC or CTB - supports direct connection to touch buttons and sensor bridges. |
| P1[0]–P1[7] | GPIO / SCB0 / TCPWM0 | Configurable as I²C SDA/SCL, SPI MOSI/MISO/SCLK, or PWM output - enables shared pins for debug interface and peripheral control without external muxing. |
| P2[0]–P2[7] | GPIO / SCB1 / TCPWM1 / LCD Segment | LCD segment drive capability (up to 4×28 segments) with internal bias generation - eliminates external LCD bias IC in small-display applications. |
| P3[0]–P3[7] | GPIO / SCB2 / TCPWM2 / WCO | WCO crystal input (XIN/XOUT) and SWD debug interface (SWDIO/SWCLK) share pins - reduces BOM count while preserving full programming and trace capability. |
| VDD / VSS | Power / Ground | Dual VDD/VSS pairs per side ensure stable analog/digital power separation and reduce ground bounce in mixed-signal operation. |
| XRES | Reset Input | Active-low reset with internal pull-up; accepts 1.8–5.5 V logic - compatible with both 3.3 V and 5 V system supervisors. |
Key Features
| Feature | Design Value |
|---|---|
| SmartSense Auto-Tuning | Hardware-accelerated CAPSENSE™ calibration adjusts IDACs and scan parameters dynamically - eliminates manual tuning across temperature/humidity variations and PCB batch differences. |
| Deep Sleep Analog Operation | Opamps, comparators, and CSD block remain active at 2.5 µA system current - enables always-on touch wake-up with sub-100 ms response latency. |
| Reconfigurable SCBs | Three independent serial blocks each support I²C master/slave, SPI master/slave, or UART TX/RX in software - reduces need for multiple dedicated peripherals and simplifies protocol migration. |
| Programmable TCPWM | Five 16-bit blocks support quadrature decoding, center-aligned PWM, and comparator-triggered kill signals - meets functional safety requirements for BLDC motor control and LED dimming. |
| Flexible GPIO Routing | All 36 GPIOs support CAPSENSE™, analog input, or digital function with configurable drive mode (OD, PP, Hi-Z, resistive pull-up/down) - allows single PCB layout to serve multiple product variants. |
Applications
| Industrial HMI Panel | Smart Appliance Control |
|---|---|
Use Scenario: Touch-enabled operator interface on factory-floor machinery with oil/moisture exposure. IC Role / Device Role / Timing Role: Primary MCU handling CAPSENSE™ button detection, LCD segment driving, and RS-485 communication via SCB. Use Value: SmartSense maintains >99.5% touch accuracy under condensation; TCPWM generates precise 20 kHz PWM for backlight dimming with flicker-free operation. |
Use Scenario: Wash-cycle control in front-load washing machines with waterproof touch controls. IC Role / Device Role / Timing Role: System controller managing motor phase sequencing (via TCPWM), water-level sensing (SAR ADC), and capacitive door latch detection. Use Value: CSD sigma-delta engine rejects EMI from brushless motor drivers; Deep Sleep mode extends battery life for wireless status reporting during standby. |
| Medical Patient Monitor | IoT Thermostat Interface |
Use Scenario: Clinical-grade bedside monitor with glove-compatible touch overlay and low-noise analog front-end. IC Role / Device Role / Timing Role: Signal acquisition hub routing ECG/SpO₂ analog inputs through CTB opamps into SAR ADC, then transmitting via UART to host processor. Use Value: Dual CTB opamps provide programmable gain/buffering with <1 µV offset drift over temperature - meets IEC 60601-1 common-mode rejection requirements. |
Use Scenario: Battery-powered smart thermostat with ambient light sensing and HVAC relay control. IC Role / Device Role / Timing Role: Standalone controller reading thermistor (SAR ADC), driving relays (TCPWM outputs), and communicating via I²C to environmental sensors. Use Value: 2.5 µA Deep Sleep current enables 5-year coin-cell operation; programmable GPIO slew rates suppress EMI during relay switching in residential RF-sensitive environments. |
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 |
|---|---|---|---|
| CY8C4045FNI-S402 | Lower memory (32 KB flash/4 KB SRAM), no LCD drive, 40-pin QFN package - lacks TCPWM quadrature decode and SCB reconfiguration flexibility. | Suitable only for basic touch-only applications without display or complex motor control. | Select when cost sensitivity outweighs feature scalability and design reuse needs. |
| STM32G031K8T6 | Arm® Cortex®-M0+, 64 KB flash/8 KB SRAM, but no integrated CAPSENSE™ or programmable analog - requires external touch controller and opamp circuitry. | Requires additional BOM components and PCB area for touch functionality; higher firmware integration effort. | Prefer only if existing STM32 toolchain familiarity and ecosystem lock-in justify added design complexity. |
Compared with CY8C4145AXI-S433, CY8C4045FNI-S402 sacrifices scalability and mixed-signal flexibility for lower unit cost, while STM32G031K8T6 shifts analog sensing burden to external components - making CY8C4145AXI-S433 optimal for rapid, integrated HMI development with minimal external components.
Availability
CY8C4145AXI-S433 is available at Aetrix Electronics and suitable for industrial HMI panels, smart appliance interfaces, and medical patient monitors requiring stable component supply, long-term lifecycle assurance, and qualified automotive-grade traceability.
Supply support for CY8C4145AXI-S433 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 R&D centers and ISO/TS 16949-certified manufacturing.
CY8C4145AXI-S433 belongs to the PSoC™ 4100S family - designed specifically for cost-sensitive, high-reliability human-interface applications demanding integrated capacitive sensing, low-power operation, and field-programmable analog/digital resources.
FAQ
Does CY8C4145AXI-S433 support USB communication?
No, CY8C4145AXI-S433 does not include a USB PHY or USB controller. Communication is limited to the three reconfigurable SCBs supporting I²C, SPI, and UART protocols. For USB connectivity, an external USB-to-UART bridge IC (e.g., CP2102N) must be used with one SCB configured as UART.
What is the maximum operating temperature for this device?
CY8C4145AXI-S433 is rated for industrial temperature range: –40 °C to +85 °C ambient. This is confirmed in Section 5.2.1 of the official datasheet (002-00122 Rev. *Q), where DC electrical specifications are guaranteed across this full range without derating.
Can the SAR ADC perform simultaneous sampling on multiple channels?
No, the 12-bit SAR ADC has a single conversion core and uses a channel sequencer for sequential sampling. It supports up to 16-channel scanning with hardware averaging per channel, but true simultaneous sampling across multiple inputs is not supported - differential mode operates on paired inputs within the same conversion cycle.
Is ModusToolbox™ required to develop firmware for this part?
No, ModusToolbox™ is optional. Firmware can be developed using Arm® GCC toolchain with PDL (Peripheral Driver Library) headers and linker scripts provided by Infineon. However, ModusToolbox™ delivers pre-integrated CAPSENSE™ configuration tools, BSPs, and automated code generation that reduce time-to-first-touch from weeks to hours.
CY8C4145AXI-S433 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-S433 FAQ
1.How can I place an order for CY8C4145AXI-S433 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4145AXI-S433 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-S433 reliable?
The price and inventory of CY8C4145AXI-S433 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4145AXI-S433 is usually 5 days.
3.What payment methods are accepted for CY8C4145AXI-S433?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4145AXI-S433 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4145AXI-S433?
CY8C4145AXI-S433 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4145AXI-S433 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-S433?
For technical support, including CY8C4145AXI-S433 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4145AXI-S433 requirements.
6.How does Aetrix verify that CY8C4145AXI-S433 is sourced from the original manufacturer or authorized distributors?
All CY8C4145AXI-S433 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-S433 meets industry standards.
7.What is the process for return or replacement of CY8C4145AXI-S433?
All CY8C4145AXI-S433 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4145AXI-S433, 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-S433 part is unused and in its original packaging.
Return procedure for CY8C4145AXI-S433:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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