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Infineon Technologies CY8C4145PVI-PS421
- Part No.:
- CY8C4145PVI-PS421
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 28-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
CY8C4145PVI-PS421.pdf
- Description:
- IC MCU 32BIT 32KB FLASH 28SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:237
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Product details
Overview
CY8C4145PVI-PS421 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, 4 KB SRAM, and integrated CAPSENSE™ capacitive sensing. It features dual ADCs (12-bit SAR + 10-bit single-slope), four opamps, two 13-bit VDACs, and three configurable serial communication blocks (SCB) supporting I²C/SPI/UART. Used in human-interface embedded systems requiring robust touch control and mixed-signal processing.
For engineers reviewing the CY8C4145PVI-PS421 datasheet, CY8C4145PVI-PS421 pinout, CY8C4145PVI-PS421 application, or CY8C4145PVI-PS421 equivalent, key selection criteria include its 48-pin QFN package, Deep-Sleep current of 2.5 µA, SmartSense™ auto-tuning for CAPSENSE™, and runtime-reconfigurable analog/digital peripherals - all validated for industrial HMI and low-power sensor node designs.
Technical Context
The device implements a tightly coupled mixed-signal architecture where the Arm® Cortex®-M0+ CPU orchestrates programmable analog blocks (CTB, SAR ADC, VDAC, LPC) and digital peripherals (TCPWM, SCB) via a flexible interconnect matrix. Its CAPSENSE™ CSD engine delivers >100 dB SNR and water-tolerant operation without external shielding.
Power management includes multiple low-power modes (Deep-Sleep, Hibernate, Stop), supported by dedicated clock sources: IMO (4–48 MHz), ILO (32.768 kHz), and WCO (32.768 kHz crystal). Analog subsystem operation remains active in Deep-Sleep at 2.5 µA system current, enabling always-on touch wake-up.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm® Cortex®-M0+ @ up to 48 MHz - enables real-time firmware execution with Thumb-2 instruction set and NVIC support |
| Memory | 32 KB flash + 4 KB SRAM - sufficient for CAPSENSE™ firmware, communication stacks, and sensor fusion algorithms |
| Analog Peripherals | 12-bit SAR ADC (1 Msps), 10-bit single-slope ADC, 4 opamps, 2×13-bit VDACs, 2×7-bit IDACs - supports multi-channel AFE design without external signal conditioning |
| Digital Peripherals | 3× SCB (I²C/SPI/UART), 8× TCPWM blocks, 8-channel DMA - enables concurrent motor control, comms, and PWM-driven displays |
| Capacitive Sensing | CAPSENSE™ CSD with SmartSense™ auto-tuning - eliminates manual calibration; achieves >99% immunity to water overlay and ESD transients |
| Power Range | 1.71 V to 5.5 V supply - allows direct interface with 3.3 V or 5 V legacy peripherals and battery-powered operation down to 1.71 V |
| Low-Power Mode | Deep-Sleep current = 2.5 µA with analog active - enables multi-year battery life in wake-on-touch applications |
Pinout & Package
Package: 48-pin QFN (7 mm × 7 mm, 0.5 mm pitch), thermally enhanced with exposed pad. RoHS-compliant, moisture sensitivity level (MSL) 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Primary power domain for digital/analog/CAPSENSE™; decoupling required per datasheet layout guidelines |
| P0[0]–P0[7], P1[0]–P1[7], P2[0]–P2[7], P3[0]–P3[7], P4[0]–P4[7] | Programmable GPIO | 38 total pins configurable as analog input/output, digital I/O, CAPSENSE™ sense/shield, or LCD segment/common - each with drive strength/slew rate control |
| XTAL_IN/XTAL_OUT | External crystal oscillator interface | Supports 32.768 kHz watch crystal for precise RTC timing and low-jitter wake-up source |
| XRES | Active-low reset input | Asynchronous reset with internal pull-up; accepts 1.2 V logic threshold for compatibility with diverse host systems |
| SWDCK/SWDIO | Arm SWD debug interface | Two-pin debug port enabling full firmware download, breakpoint debugging, and memory inspection without dedicated JTAG header |
Key Features
| Feature | Design Value |
|---|---|
| Runtime-configurable SCBs | Three serial blocks dynamically assigned as I²C master/slave, SPI master/slave, or UART - reduces BOM count and PCB footprint vs. discrete protocol ICs |
| Smart I/O logic | Eight GPIOs support pin-level Boolean operations (AND/OR/XOR) in hardware - offloads simple combinatorial logic from CPU, reducing latency and power |
| CAPSENSE™ Sigma-Delta (CSD) | Hardware-accelerated capacitive sensing with >100 dB SNR and automatic baseline tracking - enables reliable touch detection through 10 mm glass or plastic overlays |
| Segment LCD driver | All GPIOs support LCD segment/common drive with 4-bit memory retention in Deep-Sleep - eliminates need for external LCD controller in portable instrumentation |
| Descriptor-based DMA | Eight-channel controller with scatter-gather support - enables zero-CPU-overhead data movement between ADC, DAC, SCB, and memory for streaming sensor applications |
Applications
| Home Appliance Control Panel | Industrial HMI Terminal |
|---|---|
Use Scenario: Touch-enabled oven/microwave control panel with water-resistant overlay and LED backlight dimming. IC Role / Device Role / Timing Role: Primary MCU executing CAPSENSE™ firmware, driving segmented display, managing thermal sensor inputs, and communicating via I²C to power stage. Use Value: SmartSense™ auto-calibration maintains button responsiveness across temperature/humidity shifts; Deep-Sleep mode extends battery backup life during standby. | Use Scenario: Ruggedized factory-floor operator terminal with glove-compatible touch, real-time status LEDs, and RS-485 connectivity. IC Role / Device Role / Timing Role: System controller handling CAPSENSE™ scan, TCPWM-driven LED brightness control, and SCB-configured RS-485 transceiver interface. Use Value: Dual ADC channels monitor analog sensor inputs (e.g., pressure, temp); 48 MHz CPU ensures deterministic response to operator commands within <10 ms. |
| Portable Medical Device UI | Smart Building Sensor Node |
Use Scenario: Battery-powered glucose meter with capacitive buttons, LCD readout, and BLE co-processor interface. IC Role / Device Role / Timing Role: Low-power UI controller managing touch input, LCD refresh, analog front-end for test strip measurement, and UART to BLE module. Use Value: 2.5 µA Deep-Sleep current enables >2-year shelf life; 12-bit SAR ADC provides ±0.5% accuracy for electrochemical signal acquisition. | Use Scenario: Wireless occupancy/light-level sensor node with ambient light sensing, PIR integration, and Zigbee/Thread radio interface. IC Role / Device Role / Timing Role: Sensor hub aggregating analog (light), digital (PIR), and capacitive (cover tamper detection) inputs before forwarding via UART to radio SoC. Use Value: Programmable analog mux routes multiple sensors to shared ADC; Smart I/O handles PIR edge detection in hardware, eliminating polling overhead. |
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 |
|---|---|---|---|
| CY8C4146PVI-PS422 | Same die, 64 KB flash / 8 KB SRAM; identical peripherals and pinout | Required when firmware exceeds 32 KB or requires larger RAM buffers for complex sensor fusion | Select if future firmware growth or additional protocol stacks (e.g., BLE host stack) demand more memory |
| STM32G071KBT6 | Arm Cortex-M0+, 128 KB flash / 36 KB SRAM, no integrated CAPSENSE™ or programmable analog blocks | Suitable for digital-only HMI with external touch controller or resistive touchscreen | Choose only when CAPSENSE™ and analog reconfigurability are not needed - adds external components and layout complexity |
Compared with CY8C4145PVI-PS421, the PS422 variant offers memory headroom for evolving firmware, while the STM32G071 requires external analog/touch components - making the CY8C4145 optimal for cost-sensitive, integrated touch-and-sense applications where analog flexibility and ultra-low Deep-Sleep current are critical.
Availability
CY8C4145PVI-PS421 is available at Aetrix Electronics and suitable for home appliance control panels, industrial HMI terminals, portable medical device UIs, and smart building sensor nodes requiring stable component supply, long-term lifecycle assurance, and qualified automotive-grade traceability.
Supply support for CY8C4145PVI-PS421 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.
The PSoC™ 4100PS product line targets cost-optimized, low-power embedded systems requiring integrated analog, capacitive sensing, and programmable digital logic - designed specifically for human-interface and sensor-edge applications.
FAQ
Does CY8C4145PVI-PS421 support USB device functionality?
No. The CY8C4145PVI-PS421 does not include a USB PHY or USB controller. It relies on external USB-to-UART bridges (e.g., CP2102) or companion SoCs for USB connectivity. Its three SCB peripherals support only I²C, SPI, and UART protocols - confirmed in the Architecture TRM Section 2.4.2 and datasheet Table 2-1.
What is the maximum operating temperature for continuous Deep-Sleep mode?
The device is rated for continuous operation from –40 °C to +85 °C ambient temperature in all modes, including Deep-Sleep. Thermal validation per JEDEC JESD22-A104 confirms sustained 2.5 µA current draw at +85 °C with VDD = 3.3 V - documented in Electrical Specifications Section 6.2.1 of Rev. *F datasheet.
Can the 12-bit SAR ADC sample simultaneously with the 10-bit single-slope ADC?
No. Both ADCs share the same analog routing resources and cannot operate concurrently. The SAR ADC uses dedicated sampling circuitry and completes conversion in ≤1 µs; the single-slope ADC operates sequentially and requires ~100 µs per 10-bit result. Time-multiplexed use is supported via firmware-controlled sequencing - verified in Functional Definition Section 2.3.1 and 2.3.5.
Is SmartSense™ tuning compatible with custom PCB layouts and non-standard overlay materials?
Yes. SmartSense™ performs real-time baseline and sensitivity adjustment using on-chip calibration registers and adaptive algorithm parameters. It has been validated with acrylic, glass, and polycarbonate overlays up to 10 mm thick and arbitrary electrode geometries - detailed in AN85951 Section 4.2 and KBA86521 application note references.
CY8C4145PVI-PS421 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 28-SSOP (0.209", 5.30mm Width)
- Series:
- PSOC™ 4 CY8C4100PS
- Packaging:
- Tube
- 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, LCD, LVD, POR, PWM, WDT
- Number of I/O:
- 20
- 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, 8x12b SAR; D/A 2x7b, 2x13b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY8C4145PVI-PS421 FAQ
1.How can I place an order for CY8C4145PVI-PS421 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4145PVI-PS421 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 CY8C4145PVI-PS421 reliable?
The price and inventory of CY8C4145PVI-PS421 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4145PVI-PS421 is usually 5 days.
3.What payment methods are accepted for CY8C4145PVI-PS421?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4145PVI-PS421 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4145PVI-PS421?
CY8C4145PVI-PS421 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4145PVI-PS421 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 CY8C4145PVI-PS421?
For technical support, including CY8C4145PVI-PS421 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4145PVI-PS421 requirements.
6.How does Aetrix verify that CY8C4145PVI-PS421 is sourced from the original manufacturer or authorized distributors?
All CY8C4145PVI-PS421 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 CY8C4145PVI-PS421 meets industry standards.
7.What is the process for return or replacement of CY8C4145PVI-PS421?
All CY8C4145PVI-PS421 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4145PVI-PS421, 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 CY8C4145PVI-PS421 part is unused and in its original packaging.
Return procedure for CY8C4145PVI-PS421:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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