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Infineon Technologies CY8C4145AZI-S423T
- Part No.:
- CY8C4145AZI-S423T
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
CY8C4145AZI-S423T.pdf
- Description:
- IC MCU 32BIT 32KB FLASH 48TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,797
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Product details
Overview
CY8C4145AZI-S423T 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 operates from 1.71–5.5 V and supports deep-sleep mode at 2.5 µA digital system current, targeting touch-enabled human-machine interfaces in industrial control panels.
For engineers reviewing the CY8C4145AZI-S423T datasheet, CY8C4145AZI-S423T pinout, CY8C4145AZI-S423T application, or CY8C4145AZI-S423T equivalent, key selection criteria include its reconfigurable analog/digital blocks, SmartSense auto-tuning for water-tolerant touch, TCPWM kill-signal triggering for motor safety, and GPIO flexibility across 36 pins with programmable drive strength and slew rate.
Technical Context
The device integrates a fixed-function Arm® Cortex®-M0+ core with fully programmable analog (dual opamps, low-power comparators, IDACs) and digital (PLD logic, TCPWM, SCBs) subsystems routed via automatic interconnect fabric. Its CAPSENSE™ sigma-delta engine delivers >5:1 SNR and hardware-accelerated SmartSense tuning without host CPU intervention.
Clocking combines ±2% IMO, 32 kHz ILO, and external WCO for precision timing; power management enables Deep Sleep with active analog blocks and configurable wake sources including comparator events and CAPSENSE™ interrupts - critical for battery-operated touch interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm® Cortex®-M0+ @ 48 MHz with single-cycle multiply - enables real-time sensor fusion and deterministic control loops. |
| Memory | 64 KB flash (with read accelerator) + 8 KB SRAM - supports complex firmware with bootloader, CAPSENSE™ library, and communication stacks. |
| ADC | 12-bit SAR ADC @ 1 Msps with differential input and channel sequencer - allows high-speed acquisition of multiple analog sensors with signal averaging. |
| CAPSENSE™ | Sigma-delta capacitive sensing with >5:1 SNR and water tolerance - enables reliable touch buttons/sliders in humid or wet environments. |
| Power Range | 1.71–5.5 V supply - supports direct connection to Li-ion, USB, or industrial 3.3/5 V rails without level-shifting. |
| Deep Sleep Current | 2.5 µA digital system current with operational analog - extends battery life in always-on touch applications. |
| GPIO Count | 36 programmable pins with CAPSENSE™, analog, or digital roles - eliminates external component count for mixed-signal HMI designs. |
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 |
|---|---|---|
| P0[0]–P0[7] | General-purpose I/O with CAPSENSE™, analog, or digital capability | Configurable as touch sense electrode, ADC input, or UART TX/RX - no fixed peripheral binding required. |
| P1[0]–P1[7] | General-purpose I/O with LCD segment drive support | Drives up to 48-segment LCD directly without external driver IC - reduces BOM cost in display-integrated HMIs. |
| P2[0]–P2[7] | General-purpose I/O with TCPWM capture/compare | Supports quadrature decoding, PWM generation, and comparator-triggered kill signals for motor control safety. |
| P3[0]–P3[7] | General-purpose I/O with SCB (I²C/SPI/UART) assignment | Three independent serial blocks can be mapped to any P3 pin pair - enables flexible board layout and routing. |
| VDD, VSS | Power supply and ground | Dual VDD/VSS pairs per side ensure stable operation under fast-switching GPIO loads and reduce noise coupling. |
| XRES | Active-low reset input | External reset assertion forces full system initialization - compatible with pushbutton or supervisor ICs. |
| SWDCK/SWDIO | Serial Wire Debug interface | Enables non-intrusive debugging and programming via standard ARM SWD protocol - no dedicated debug header needed. |
Key Features
| Feature | Design Value |
|---|---|
| Reconfigurable SCBs | Three independent serial blocks dynamically assigned as I²C master/slave, SPI master/slave, or UART - eliminates need for multiple dedicated peripherals. |
| SmartSense Auto-Tuning | Hardware-accelerated CAPSENSE™ calibration that adapts to environmental drift and parasitic capacitance changes - removes manual tuning effort in production. |
| Programmable Analog Blocks | Dual opamps usable as buffer, comparator, or transimpedance amplifier; IDACs support self-capacitance or mutual-capacitance sensing on any GPIO - maximizes design reuse. |
| TCPWM Kill Signal | Comparator output can directly assert TCPWM kill input to halt PWM outputs within one clock cycle - meets functional safety requirements for motor drives. |
| Low-Power Deep Sleep | Analog blocks remain active while CPU and digital system draw only 2.5 µA - enables wake-on-touch with sub-100 ms response time. |
Applications
| Industrial HMI Panel | Smart Appliance Control |
|---|---|
Use Scenario: Touch-based operator interface on factory floor equipment with dust, oil, and occasional water exposure. IC Role / Device Role / Timing Role: Primary MCU managing CAPSENSE™ buttons/sliders, local LED/LCD feedback, and Modbus RTU over UART. Use Value: >5:1 SNR and SmartSense enable reliable touch detection without recalibration during temperature/humidity shifts. |
Use Scenario: Washing machine control panel requiring waterproof touch keys and real-time motor phase control. IC Role / Device Role / Timing Role: System controller executing CAPSENSE™ scan, TCPWM-driven BLDC commutation, and fault-safe kill signal generation. Use Value: Comparator-triggered TCPWM kill ensures immediate motor shutdown on overcurrent - meeting IEC 60730 Class B requirements. |
| Medical Device Interface | IoT Gateway Front Panel |
Use Scenario: Disinfectant-resistant touch interface on portable diagnostic equipment powered by coin-cell battery. IC Role / Device Role / Timing Role: Low-power HMI controller with wake-on-touch, ADC monitoring of battery voltage and sensor health. Use Value: 2.5 µA Deep Sleep current with active analog enables >1-year battery life with daily usage. |
Use Scenario: Wall-mounted smart home gateway with multi-function touch controls and status LCD display. IC Role / Device Role / Timing Role: Integrated controller driving 48-segment LCD, scanning 12 touch electrodes, and communicating via I²C to Wi-Fi SoC. Use Value: On-chip LCD segment drive eliminates external display driver IC - reducing layer count and assembly cost. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable microcontroller with capacitive sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY8C4045FNI-DS400 | Lower memory (32 KB flash / 4 KB SRAM), no TCPWM kill signal, 32-pin QFN package | Limited to simpler touch-only applications without motor control or complex firmware | Select when BOM cost and footprint are prioritized over safety-critical PWM control features. |
| STM32G031K8T6 | No integrated CAPSENSE™, requires external touch controller; higher active current (70 µA/MHz) | Suitable for button-based UIs where external touch IC is acceptable and analog integration is secondary | Choose if leveraging existing STM32 toolchain and ecosystem outweighs need for single-chip touch+MCU integration. |
Compared with CY8C4145AZI-S423T, CY8C4045FNI-DS400 trades TCPWM safety features and memory for lower cost and size, while STM32G031K8T6 shifts capacitive sensing complexity to external components and increases power in active modes - making CY8C4145AZI-S423T optimal for integrated, safety-aware, low-power touch HMI designs.
Availability
CY8C4145AZI-S423T is available at Aetrix Electronics and suitable for industrial HMI panels, smart appliance controllers, medical device interfaces, and IoT gateway front panels requiring stable component supply, long-term lifecycle support, and qualified automotive-grade traceability.
Supply support for CY8C4145AZI-S423T 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 and manufacturing infrastructure.
CY8C4145AZI-S423T belongs to the PSoC™ 4100S family - designed specifically for highly integrated, low-power human-machine interface applications combining capacitive touch, analog sensing, and real-time control in a single chip.
FAQ
Does CY8C4145AZI-S423T support hardware-accelerated capacitive sensing without CPU involvement?
Yes. The device integrates a dedicated sigma-delta CAPSENSE™ block with hardware SmartSense auto-tuning that performs baseline tracking, noise filtering, and threshold adaptation autonomously. The CPU remains idle during scan cycles, waking only on touch interrupt - confirmed in Section 2.7.1 of the 002-00122 Rev. *Q datasheet.
What debug interface does CY8C4145AZI-S423T use, and is external hardware required?
CY8C4145AZI-S423T uses Serial Wire Debug (SWD) via dedicated SWDCK and SWDIO pins. No external debug adapter is mandatory: it supports programming and real-time debugging through Infineon's KitProg3 on development kits or third-party ARM SWD probes like Segger J-Link - verified in Section 5.6.2 of the datasheet.
Can all 36 GPIOs be used simultaneously for CAPSENSE™, analog input, and digital communication?
No - while any GPIO can be assigned to CAPSENSE™, analog, or digital functions, resource contention exists. For example, using P3 pins for SCB functionality precludes their use as TCPWM outputs; simultaneous full utilization of all analog blocks (opamps, ADC, IDACs) requires careful pin mapping per the Pin Configuration Tool in PSoC™ Creator - detailed in Section 3.1 of the datasheet.
Is the 48 MHz CPU speed achievable across the full 1.71–5.5 V operating range?
Yes. The Arm® Cortex®-M0+ core runs at up to 48 MHz across the entire 1.71–5.5 V supply range, enabled by an internal regulator and dynamic voltage scaling. This is guaranteed per the "Device Level Specifications" table in Section 5.2.1 of the datasheet, with timing validated at both min and max VDD conditions.
CY8C4145AZI-S423T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 48-LQFP
- Series:
- PSOC™ 4 CY8C4100S
- Packaging:
- Tape & Reel (TR)
- 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-S423T FAQ
1.How can I place an order for CY8C4145AZI-S423T through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4145AZI-S423T 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-S423T reliable?
The price and inventory of CY8C4145AZI-S423T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4145AZI-S423T is usually 5 days.
3.What payment methods are accepted for CY8C4145AZI-S423T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4145AZI-S423T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4145AZI-S423T?
CY8C4145AZI-S423T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4145AZI-S423T 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-S423T?
For technical support, including CY8C4145AZI-S423T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4145AZI-S423T requirements.
6.How does Aetrix verify that CY8C4145AZI-S423T is sourced from the original manufacturer or authorized distributors?
All CY8C4145AZI-S423T 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-S423T meets industry standards.
7.What is the process for return or replacement of CY8C4145AZI-S423T?
All CY8C4145AZI-S423T units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4145AZI-S423T, 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-S423T part is unused and in its original packaging.
Return procedure for CY8C4145AZI-S423T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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