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Infineon Technologies CY8C4145AZI-PS423
- Part No.:
- CY8C4145AZI-PS423
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
CY8C4145AZI-PS423.pdf
- Description:
- IC MCU 32BIT 32KB FLASH 48TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,807
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Product details
Overview
CY8C4145AZI-PS423 from Infineon is a PSoC™ 4100PS programmable system-on-chip based on Arm® Cortex®-M0+ core, operating up to 48 MHz with 32 KB flash and 4 KB SRAM. It integrates dual ADCs (12-bit SAR + 10-bit single-slope), CAPSENSE™ CSD capacitive sensing, four opamps, two 13-bit VDACs, and three configurable serial communication blocks (SCB) supporting I²C/SPI/UART. Used in industrial HMI, smart sensor nodes, and low-power touch-enabled control panels.
For engineers reviewing the CY8C4145AZI-PS423 datasheet, CY8C4145AZI-PS423 pinout, CY8C4145AZI-PS423 application, or CY8C4145AZI-PS423 equivalent, key selection criteria include its integrated CAPSENSE™ Sigma-Delta engine with SmartSense™ auto-tuning, Deep-Sleep analog operation at 2.5 µA, and flexible GPIO routing for mixed-signal AFE design.
Technical Context
The device implements a tightly coupled 32-bit Arm® Cortex®-M0+ CPU with hardware-accelerated signal processing, supported by an eight-channel descriptor-based DMA controller and flash read accelerator. Its analog subsystem includes dedicated CTB opamps with rail-to-rail input/output, programmable gain amplifiers, and a 38-channel analog mux enabling custom front-end topologies.
Digital peripherals are fully reconfigurable: each SCB supports run-time mode switching between I²C (up to 1 Mbps), SPI (up to 12.5 MHz), and UART (up to 1 Mbps); TCPWM blocks support center-aligned PWM, quadrature decoding, and pseudo-random modulation - all with independent clock sources and interrupt triggers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm® Cortex®-M0+, 48 MHz max - enables real-time firmware execution with deterministic interrupt latency under 12 cycles. |
| Flash / SRAM | 32 KB flash with read accelerator + 4 KB SRAM - supports bootloader + application partitioning and runtime data buffering. |
| ADC | 12-bit SAR ADC (1 Msps) + 10-bit single-slope ADC - provides high-speed precision sampling and low-power periodic monitoring simultaneously. |
| CAPSENSE™ | Fourth-gen Sigma-Delta (CSD) with >100 dB SNR and water-tolerant scanning - delivers robust touch detection on curved surfaces or wet overlays. |
| Analog Peripherals | 4 opamps, 2 comparators, 2×13-bit VDACs, 2×7-bit IDACs - enables full analog signal chain implementation without external components. |
| Digital Peripherals | 3× SCBs (I²C/SPI/UART), 8× TCPWM blocks, 38 GPIOs with Smart I/O logic - allows concurrent multi-protocol communication and hardware-accelerated timing control. |
| Power Range | 1.71 V to 5.5 V supply - supports direct connection to Li-ion, USB, or industrial 3.3/5 V rails without LDO pre-regulation. |
Pinout & Package
Package: 48-pin QFN (7 mm × 7 mm, 0.5 mm pitch), thermally enhanced with exposed pad. Pinout validated per Infineon datasheet Rev. *F (pages 16–19): 38 GPIOs with dual-function capability, including dedicated SWD debug pins (P0[0]/P0[1]), WCO inputs (P15[0]/P15[1]), and VREF/VDDA/VSSA analog supply terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P0[0], P0[1] | SWD Debug Interface | Hardware debug access via Arm Serial Wire Debug; no external debugger header required for firmware development. |
| P15[0], P15[1] | Watch Crystal Oscillator (WCO) | Supports 32.768 kHz crystal for precise RTC and Deep-Sleep wake-up timing with ±20 ppm stability. |
| VDDA, VSSA | Analog Power Supply | Independent 1.71–5.5 V analog domain supply - isolates noise-sensitive ADC/DAC operation from digital switching transients. |
| VREF | Reference Voltage Input | Accepts external 0.9–VDDA reference for ADC/DAC calibration or internal 1.024 V bandgap reference selection. |
| P12[0]–P12[7] | CAPSENSE™ Segments | Eight dedicated pins with integrated CSD modulator/demodulator - enable self- and mutual-capacitance scanning without external RC networks. |
Key Features
| Feature | Design Value |
|---|---|
| SmartSense™ Auto-Tuning | Hardware-accelerated CAPSENSE™ calibration eliminates manual parameter tuning across temperature/humidity variations and PCB stackup changes. |
| Deep-Sleep Analog Operation | 2.5 µA system current with active 12-bit SAR ADC sampling every 500 ms - extends battery life in wireless sensor endpoints beyond 5 years. |
| Programmable Analog Mux (38-channel) | Enables dynamic reconfiguration of analog signal paths - e.g., routing any GPIO to ADC input or opamp output without PCB redesign. |
| Smart I/O Logic | Eight GPIOs support pin-level Boolean operations (AND/OR/XOR) in hardware - offloads simple state-machine logic from CPU during low-power modes. |
| Descriptor-Based DMA | Eight-channel controller with scatter-gather support - enables zero-CPU-overhead data movement between ADC, SCB, and memory for continuous streaming applications. |
Applications
| Industrial HMI Panels | Smart Sensor Nodes |
|---|---|
Use Scenario: Touch-enabled operator interface on factory floor equipment with glove operation and splash resistance. IC Role / Device Role / Timing Role: Main controller executing real-time PLC logic while managing CAPSENSE™ buttons/sliders and driving segment LCD in Deep-Sleep. Use Value: Eliminates external touch controller and LCD driver ICs; achieves <2.5 µA standby with instant wake-up on touch event. | Use Scenario: Battery-powered environmental monitor measuring temperature, humidity, and air quality with wireless telemetry. IC Role / Device Role / Timing Role: System-on-chip handling sensor signal conditioning (opamp + ADC), data logging (flash), and BLE UART bridging (SCB). Use Value: Single-chip solution reduces BOM count by 4 components; 12-bit SAR ADC enables ±0.1°C thermal resolution without external amplifier. |
| Medical Wearables | Home Appliance Controls |
Use Scenario: Compact wearable patch monitoring skin impedance and motion using dry-electrode biosensing. IC Role / Device Role / Timing Role: Analog front-end controller with programmable IDACs for current-source excitation and synchronized ADC capture. Use Value: Dual 7-bit IDACs drive differential electrode pairs at 100 µA–1 mA; Smart I/O handles motion-triggered sampling without CPU wake-up. | Use Scenario: Touch-sensitive cooktop control panel with proximity wake-up and child-lock functionality. IC Role / Device Role / Timing Role: CAPSENSE™ hub managing 12-button overlay, buzzer PWM output, and thermal shutdown monitoring via internal temperature sensor. Use Value: Integrated temperature sensor (±2°C accuracy) enables real-time thermal derating; CSD engine rejects EMI from induction heating coils. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable mixed-signal microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY8C4247AZI-M485 | Higher flash (128 KB), 8 KB SRAM, added USBFS block - no WCO support in PS423 package variant. | Required for USB-connected devices; not drop-in due to different pinout and clock tree configuration. | Select when USB device-class firmware or larger code footprint is needed; verify WCO dependency in Deep-Sleep use cases. |
| STM32L432KC | ARM Cortex-M4F core, 256 KB flash, no integrated CAPSENSE™ - requires external touch controller or GPIO-based RC decay sensing. | Suitable for cost-sensitive non-touch applications; lacks hardware-accelerated sigma-delta capacitive sensing. | Choose for floating-point math-intensive tasks; avoid if CAPSENSE™ performance, water tolerance, or analog integration are critical. |
Compared with CY8C4247AZI-M485 and STM32L432KC, CY8C4145AZI-PS423 uniquely balances capacitive sensing fidelity, ultra-low Deep-Sleep power, and analog programmability in a compact QFN - making it optimal for space-constrained, touch-centric embedded systems where external component count must be minimized.
Availability
CY8C4145AZI-PS423 is available at Aetrix Electronics and suitable for industrial HMI panels, smart sensor nodes, medical wearables, and home appliance controls requiring stable component supply across multi-year production cycles.
Supply support for CY8C4145AZI-PS423 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 connectivity solutions, with over 40 years of silicon innovation.
The PSoC™ 4100PS product line targets cost-sensitive, low-power embedded systems requiring integrated analog, capacitive sensing, and flexible digital peripherals - designed specifically for rapid prototyping and production-ready mixed-signal control.
FAQ
Does CY8C4145AZI-PS423 support USB connectivity?
No. This part lacks a USB physical layer (USBFS block) and does not support native USB device or host operation. It offers three SCB modules configurable only as I²C, SPI, or UART. For USB-capable variants, consider CY8C4247AZI-M485 or CY8C4248LQI-BL553 with integrated USBFS.
What is the maximum operating temperature for CY8C4145AZI-PS423?
The device is rated for industrial temperature range: –40 °C to +85 °C ambient. Its internal temperature sensor (±2 °C accuracy) operates across this full range and can trigger hardware interrupts for thermal management without CPU intervention.
Can CAPSENSE™ operate during Deep-Sleep mode?
Yes. CAPSENSE™ CSD scanning continues autonomously in Deep-Sleep mode using the WCO clock source, consuming only 2.5 µA total system current. Wake-up events (e.g., button press) are signaled via dedicated interrupt pins without waking the CPU until scan completion.
Is PSoC™ Creator still the recommended IDE for this device?
Yes. Infineon officially supports PSoC™ Creator 4.4 for CY8C4145AZI-PS423 development, including schematic-based design entry, automatic analog/digital routing, and CAPSENSE™ tuning GUI. ModusToolbox™ support is limited to newer PSoC™ 4000S/4100S families.
CY8C4145AZI-PS423 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 48-LQFP
- Series:
- PSOC™ 4 CY8C4100PS
- 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:
- 38
- 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, 8x12b SAR; D/A 2xIDAC
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY8C4145AZI-PS423 FAQ
1.How can I place an order for CY8C4145AZI-PS423 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4145AZI-PS423 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-PS423 reliable?
The price and inventory of CY8C4145AZI-PS423 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4145AZI-PS423 is usually 5 days.
3.What payment methods are accepted for CY8C4145AZI-PS423?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4145AZI-PS423 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4145AZI-PS423?
CY8C4145AZI-PS423 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4145AZI-PS423 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-PS423?
For technical support, including CY8C4145AZI-PS423 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4145AZI-PS423 requirements.
6.How does Aetrix verify that CY8C4145AZI-PS423 is sourced from the original manufacturer or authorized distributors?
All CY8C4145AZI-PS423 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-PS423 meets industry standards.
7.What is the process for return or replacement of CY8C4145AZI-PS423?
All CY8C4145AZI-PS423 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4145AZI-PS423, 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-PS423 part is unused and in its original packaging.
Return procedure for CY8C4145AZI-PS423:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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