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Infineon Technologies CY8C4145AZI-S423
- Part No.:
- CY8C4145AZI-S423
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
CY8C4145AZI-S423.pdf
- Description:
- IC MCU 32BIT 32KB FLASH 48TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,898
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Product details
Overview
CY8C4145AZI-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, 12-bit 1-Msps SAR ADC, and three reconfigurable serial communication blocks (I²C/SPI/UART). It supports deep-sleep operation at 2.5 µA and delivers best-in-class SNR (>5:1) for water-tolerant touch interfaces in consumer HMI applications.
For engineers reviewing the CY8C4145AZI-S423 datasheet, CY8C4145AZI-S423 pinout, CY8C4145AZI-S423 application, or CY8C4145AZI-S423 equivalent, key selection considerations include its reconfigurable analog/digital blocks, SmartSense auto-tuning for CAPSENSE™, TCPWM kill-signal triggering for motor control, and 1.71–5.5 V wide-voltage operation across industrial and battery-powered designs.
Technical Context
The device integrates a fixed-function Arm® Cortex®-M0+ core with programmable analog (two opamps, two low-power comparators, 12-bit SAR ADC, IDACs) and digital (TCPWM, SCB, PLD) peripherals routed via a flexible interconnect matrix. Its CAPSENSE™ sigma-delta engine operates independently of CPU load and enables hardware-accelerated touch scanning with automatic baseline compensation.
Clocking is managed by multiple sources: ±2% IMO, 32 kHz ILO, and external WCO - enabling precise timing for real-time control loops and low-power wake-up events. The five TCPWM blocks support center-aligned PWM, quadrature decoding, and comparator-triggered fault shutdown - critical for motor drive safety compliance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm® Cortex®-M0+ @ 48 MHz with single-cycle multiply - enables deterministic real-time firmware execution without external co-processor. |
| Flash / SRAM | 64 KB flash with read accelerator + 8 KB SRAM - supports complex CAPSENSE™ + communication stacks with minimal code footprint overhead. |
| ADC | 12-bit 1-Msps SAR ADC with differential mode and channel sequencer - allows synchronized multi-sensor acquisition (e.g., temperature + voltage monitoring). |
| CAPSENSE™ SNR | Signal-to-noise ratio >5:1 - ensures reliable touch detection under wet conditions and EMI-rich environments. |
| Deep Sleep Current | 2.5 µA system current with operational analog - extends battery life in always-on touch interfaces (e.g., smart thermostats, wearables). |
| GPIO Count | Up to 36 programmable pins - any pin supports CAPSENSE™, analog input, or digital I/O with configurable drive strength and slew rate. |
| Serial Interfaces | Three SCBs supporting concurrent I²C, SPI, UART - eliminates need for external bus expanders in sensor hub or display controller designs. |
Pinout & Package
This device is packaged in a 48-lead TQFP (7 mm × 7 mm, 0.5 mm pitch) with exposed thermal pad. Pin functions are fully reconfigurable via firmware, including analog input, CAPSENSE™ electrode, digital I/O, and serial interface assignment.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Primary power supply | Accepts 1.71–5.5 V; powers digital core, analog blocks, and I/O banks - enables direct Li-ion or USB VBUS connection. |
| VSS | Ground reference | Dedicated analog/digital ground return path - critical for noise isolation between CAPSENSE™ and high-speed digital logic. |
| XRES | External reset input | Active-low asynchronous reset with internal pull-up - allows system-level watchdog recovery independent of clock domain. |
| SWDCK / SWDIO | Debug interface | Two-pin Serial Wire Debug - supports in-circuit programming and real-time trace without dedicated JTAG header. |
| P0[0]–P0[7] | Programmable GPIO | Support CAPSENSE™, analog input, or digital function - configured per application via PSoC Creator or ModusToolbox™. |
Key Features
| Feature | Design Value |
|---|---|
| SmartSense Auto-Tuning | Hardware-accelerated CAPSENSE™ calibration eliminates manual threshold tuning and compensates for environmental drift in production. |
| Reconfigurable SCBs | Each serial block dynamically switches between I²C master/slave, SPI master/slave, or UART modes - reduces BOM count in multi-protocol systems. |
| TCPWM Kill Signal | Comparator output directly triggers PWM shutdown within one clock cycle - meets functional safety requirements for motor overcurrent protection. |
| Programmable Analog Routing | Opamp outputs and ADC inputs can be connected to any GPIO via internal analog bus - enables flexible signal chain design without PCB layer changes. |
| Low-Power Comparators | Operate in Deep Sleep mode with <100 nA quiescent current - enables wake-on-event sensing (e.g., door open detection) without CPU intervention. |
Applications
| Home Appliance Control Panel | Industrial Human-Machine Interface |
|---|---|
Use Scenario: Touch-enabled oven control with waterproof overlay and temperature feedback. IC Role / Device Role / Timing Role: Main MCU handling CAPSENSE™ scan, thermal sensor ADC reading, and display update via SPI. Use Value: >5:1 SNR ensures reliable touch detection even with condensation; 2.5 µA Deep Sleep extends standby time during idle periods. | Use Scenario: Panel-mounted PLC operator interface with rotary encoder and LED indicators. IC Role / Device Role / Timing Role: Real-time controller managing quadrature decoding, PWM dimming, and Modbus RTU over UART. Use Value: Five TCPWM blocks enable simultaneous motor control and LED brightness regulation; reconfigurable SCBs simplify field protocol upgrades. |
| Portable Medical Device | Smart Building Sensor Node |
Use Scenario: Battery-powered pulse oximeter with touch UI and optical sensor interface. IC Role / Device Role / Timing Role: System-on-chip integrating analog front-end (opamp + IDAC), ADC, and BLE host interface. Use Value: Integrated 12-bit SAR ADC and dual IDACs eliminate external analog components; 1.71 V minimum VDD supports aging coin-cell operation. | Use Scenario: Occupancy sensor node with ambient light, temperature, and motion detection. IC Role / Device Role / Timing Role: Low-power sensor aggregator using CAPSENSE™ for proximity wake-up and SAR ADC for environmental monitoring. Use Value: Deep Sleep current of 2.5 µA enables 5+ year battery life; programmable GPIOs allow shared pins across multiple sensors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY8C4045FNI-S402 | Lower memory (32 KB flash / 4 KB SRAM); no TCPWM kill-signal feature; same CAPSENSE™ engine. | Limited to simpler HMI with fewer peripherals; lacks motor-control safety features. | Select when cost-sensitive and full TCPWM safety features are unnecessary. |
| STM32G071KBT6 | ARM Cortex-M0+, 64 KB flash, but no integrated CAPSENSE™ or programmable analog; requires external touch controller. | Requires additional ICs for robust capacitive sensing; higher BOM cost and PCB area. | Select when standard peripherals suffice and touch is implemented externally or omitted. |
Compared with CY8C4145AZI-S423, CY8C4045FNI-S402 offers reduced memory and peripheral set at lower cost, while STM32G071KBT6 provides comparable MCU performance but demands external components for CAPSENSE™ functionality - increasing design complexity and bill-of-materials count.
Availability
CY8C4145AZI-S423 is available at Aetrix Electronics and suitable for home appliance control panels, industrial HMIs, portable medical devices, and smart building sensor nodes requiring stable component supply and long-term manufacturability.
Supply support for CY8C4145AZI-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 ICs, and embedded controllers, with global R&D and manufacturing infrastructure.
The PSoC™ 4100S product line targets cost-sensitive, low-power embedded systems requiring integrated capacitive sensing and reconfigurable analog/digital logic - designed specifically for human-interface and sensor-edge applications.
FAQ
Does CY8C4145AZI-S423 support USB connectivity?
No. This device does not include a USB PHY or USB controller. Communication is limited to the three reconfigurable SCBs (I²C, SPI, UART) and SWD debug interface. For USB host or device functionality, an external bridge IC or migration to a PSoC™ 4 BLE or PSoC™ 6 device is required.
What development tools are officially supported for CY8C4145AZI-S423?
Infineon officially supports PSoC™ Creator (legacy IDE with schematic-based design) and ModusToolbox™ (modern Eclipse-based environment with HAL drivers and middleware). Both provide full CAPSENSE™ configuration, TCPWM setup, and debug support via KitProg3 or MiniProg4 programmers.
Can the internal opamps drive external loads directly?
Yes - each opamp supports high-drive external mode with up to 25 mA output current and rail-to-rail operation. They can directly drive small solenoids, LEDs, or analog sensors without external buffers, provided load capacitance remains below 100 pF to maintain stability.
Is the 48 MHz CPU frequency achievable across the full 1.71–5.5 V supply range?
Yes. The Arm® Cortex®-M0+ core operates at up to 48 MHz across the entire specified voltage range (1.71 V to 5.5 V), enabled by adaptive voltage scaling and the ±2% internal main oscillator (IMO) with optional PLL multiplication - no external crystal required for full-speed operation.
CY8C4145AZI-S423 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 48-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:
CY8C4145AZI-S423 FAQ
1.How can I place an order for CY8C4145AZI-S423 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4145AZI-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 CY8C4145AZI-S423 reliable?
The price and inventory of CY8C4145AZI-S423 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4145AZI-S423 is usually 5 days.
3.What payment methods are accepted for CY8C4145AZI-S423?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4145AZI-S423 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4145AZI-S423?
CY8C4145AZI-S423 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4145AZI-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 CY8C4145AZI-S423?
For technical support, including CY8C4145AZI-S423 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4145AZI-S423 requirements.
6.How does Aetrix verify that CY8C4145AZI-S423 is sourced from the original manufacturer or authorized distributors?
All CY8C4145AZI-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 CY8C4145AZI-S423 meets industry standards.
7.What is the process for return or replacement of CY8C4145AZI-S423?
All CY8C4145AZI-S423 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4145AZI-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 CY8C4145AZI-S423 part is unused and in its original packaging.
Return procedure for CY8C4145AZI-S423:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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