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Infineon Technologies CY8C4A45PVI-481
- Part No.:
- CY8C4A45PVI-481
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 28-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
CY8C4A45PVI-481.pdf
- Description:
- IC MCU 32BIT 32KB FLASH 28SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:880
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Product details
Overview
CY8C4A45PVI-481 from Infineon Technologies (formerly Cypress Semiconductor) is a programmable 32-bit Arm® Cortex™-M0+ analog coprocessor designed for sensor signal conditioning and preprocessing at the edge. It integrates a 12-bit SAR ADC, 10-bit single-slope ADC, two opamps, two low-power comparators, four 13-bit DACs via UAB, and CapSense® Sigma-Delta capacitive sensing - enabling real-time analog aggregation before serial transmission to host processors in industrial and IoT sensor hubs.
For engineers reviewing the CY8C4A45PVI-481 datasheet, CY8C4A45PVI-481 pinout, CY8C4A45PVI-481 application, or CY8C4A45PVI-481 equivalent, key selection criteria include Deep-Sleep analog retention (2.5 µA system current), 38-channel analog mux routing, Smart I/O Boolean logic per pin, and WCO-backed timing stability for battery-powered sensor nodes requiring deterministic wake-up and SNR-optimized capacitive touch.
Technical Context
The device implements a dual-domain architecture: a high-precision analog subsystem with reconfigurable Universal Analog Blocks (UAB) supporting second-order filtering or incremental ΔΣ conversion, and a deterministic digital domain with three run-time configurable SCBs (I²C/SPI/UART) and eight TCPWM blocks supporting center-aligned PWM for motor control or LED dimming.
Its power management includes hardware-controlled transitions between Active (48 MHz CPU), Sleep (CPU clock-gated), and Deep-Sleep (35 µs wake-up, opamps active), with independent voltage regulation across 1.71–5.5 V supply range - enabling direct interfacing with unregulated battery rails or industrial 3.3/5 V buses without external LDOs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M0+, up to 48 MHz - delivers deterministic real-time processing for time-critical sensor fusion without RTOS overhead. |
| Flash / SRAM | 32 KB flash with read accelerator + 4 KB zero-wait-state SRAM - supports firmware updates and local data buffering in resource-constrained edge nodes. |
| Analog Peripherals | 12-bit SAR ADC + 10-bit single-slope ADC + 2× opamps + 2× LP comparators + 38-channel analog mux - enables multi-sensor AFE construction on a single die. |
| CapSense | 4th-gen CapSense Sigma-Delta (CSD) with SmartSense auto-tuning - achieves >100:1 water-tolerant SNR for wet-environment touch interfaces. |
| Power Modes | Deep-Sleep current = 2.5 µA with analog active - allows years of operation on coin-cell batteries while maintaining sensor readiness. |
| Package | 48-pin TQFP (7 mm × 7 mm, 0.5 mm pitch) - provides full GPIO access and thermal performance suitable for industrial PCB layouts. |
Pinout & Package
Package: 48-pin TQFP (7 mm × 7 mm, 0.5 mm pitch), RoHS-compliant, lead-free, moisture sensitivity level 3 (MSL3).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Main power supply input | Accepts 1.71–5.5 V; powers digital core, analog blocks, and I/O; requires local 100 nF decoupling. |
| VSS | Digital ground reference | Primary return path for digital logic and CPU subsystem; must be connected to system GND plane. |
| P0[0]–P0[7] | Programmable GPIO bank 0 | Support analog input, CapSense, LCD segment, or Smart I/O Boolean logic; configurable slew rate and drive strength. |
| P1[0]–P1[7] | Programmable GPIO bank 1 | Includes dedicated WCO input (P1[0]/P1[1]); supports crystal oscillator startup and low-power timing functions. |
| SWDCK / SWDIO | Serial Wire Debug interface | Two-pin debug port for programming and full-chip debugging; compatible with MiniProg3 and industry-standard SWD tools. |
| XRES | External reset input | Active-low asynchronous reset; debounced internally; used for system-level fault recovery or brown-out coordination. |
Key Features
| Feature | Design Value |
|---|---|
| UAB Reconfiguration | Single Universal Analog Block dynamically switchable between 12-bit incremental ΔΣ ADC, second-order filter, or dual 13-bit DAC - eliminates need for external analog ICs in mixed-signal designs. |
| Smart I/O Logic | Eight pins support pin-level Boolean operations (AND/OR/XOR) in hardware - enables real-time signal conditioning (e.g., debounce, edge detection) without CPU intervention. |
| Descriptor-Based DMA | Eight-channel DMA with memory-mapped descriptor chaining - offloads ADC-to-memory or UART-transmit transfers, freeing CPU for algorithm execution. |
| CapSense CSD Engine | Hardware-accelerated Sigma-Delta modulation with automatic baseline tracking and noise rejection - reduces firmware complexity for robust touch buttons/sliders in EMI-prone environments. |
Applications
| Industrial Sensor Hub | Capacitive Touch Interface |
|---|---|
Use Scenario: Aggregating temperature, pressure, and humidity signals from multiple transducers in factory automation nodes. IC Role / Device Role / Timing Role: Analog coprocessor performing simultaneous sampling, filtering, and format conversion prior to I²C transmission to main MCU. Use Value: Reduces host MCU interrupt load by >70% and enables synchronized multi-channel acquisition with <1 µs inter-channel skew. | Use Scenario: Water-resistant touch panel for medical equipment exposed to cleaning fluids and gloves. IC Role / Device Role / Timing Role: Dedicated CapSense controller with hardware CSD engine and SmartSense auto-calibration. Use Value: Maintains >95% touch accuracy under 2 mm water film and eliminates manual tuning during production calibration. |
| Battery-Powered Environmental Monitor | LED Dimming & Motor Control Node |
Use Scenario: Solar-powered air quality sensor logging PM2.5, CO₂, and VOCs every 10 minutes. IC Role / Device Role / Timing Role: Low-power signal processor managing Deep-Sleep wake-up, analog acquisition, and SPI-based flash storage. Use Value: Achieves 5-year battery life on CR2477 using 2.5 µA Deep-Sleep current and sub-35 µs wake latency. | Use Scenario: Compact HVAC actuator with fan speed control and status LED feedback. IC Role / Device Role / Timing Role: Digital peripheral manager driving center-aligned PWM to BLDC fan and pseudo-random PWM to status LEDs. Use Value: Eliminates external timer ICs; enables synchronized 20 kHz fan PWM and flicker-free LED dimming from shared TCPWM resources. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog coprocessor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32G474RET6 | Higher CPU clock (170 MHz), no integrated CapSense CSD engine, fewer analog mux channels (16 vs. 38) | Requires external touch controller for wet-environment touch; better suited for math-intensive control loops than analog aggregation | Select when floating-point computation dominates over analog front-end flexibility |
| MAX32660GWE+T | Integrated ultra-low-power ADC (16-bit ΣΔ), no programmable analog blocks or UAB, only 2 opamps | Lacks reconfigurable analog filters and CapSense hardware acceleration; limited GPIO routing for multi-sensor AFEs | Select for pure low-power measurement nodes where analog path is fixed and pre-defined |
Compared with STM32G474RET6 and MAX32660GWE+T, CY8C4A45PVI-481 uniquely balances programmable analog routing, hardware-accelerated capacitive sensing, and deterministic Deep-Sleep operation - making it optimal for compact, multi-sensor edge devices where analog signal diversity and battery longevity are co-primary constraints.
Availability
CY8C4A45PVI-481 is available at Aetrix Electronics and suitable for industrial sensor hubs, battery-powered environmental monitors, capacitive touch interfaces, and LED/motor control nodes requiring stable component supply and long-term lifecycle assurance.
Supply support for CY8C4A45PVI-481 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 global semiconductor leader headquartered in Munich, Germany, specializing in power management, sensing, and microcontroller solutions for automotive, industrial, and IoT markets.
CY8C4A45PVI-481 belongs to the PSoC® Analog Coprocessor family, engineered to offload analog signal conditioning and sensor preprocessing from host MCUs - targeting compact, low-power, multi-sensor edge nodes where flexibility and power efficiency are critical.
FAQ
What debug interface does CY8C4A45PVI-481 support?
CY8C4A45PVI-481 uses the Arm Serial-Wire Debug (SWD) interface with two-wire connectivity (SWDIO and SWDCK). It supports full programming, real-time debugging, breakpoint setting (four address comparators), and watchpoint monitoring (two data comparators) - fully compatible with MiniProg3, J-Link, and CMSIS-DAP tools without requiring JTAG headers or additional adapters.
Does CY8C4A45PVI-481 support capacitive sensing through water or glass overlays?
Yes - its fourth-generation CapSense Sigma-Delta (CSD) engine delivers >100:1 signal-to-noise ratio and includes hardware-based water tolerance algorithms. With SmartSense auto-tuning enabled, it reliably detects finger touches through up to 2 mm of water film or 4 mm of glass, eliminating manual calibration in production for medical, appliance, and outdoor HMI applications.
Can the analog peripherals operate independently during Deep-Sleep mode?
Yes - opamps, comparators, CapSense CSD block, and the 10-bit single-slope ADC remain fully functional in Deep-Sleep mode at 2.5 µA total system current. This enables continuous analog monitoring (e.g., threshold detection or periodic sensor wake-up) without CPU involvement, reducing average power by orders of magnitude versus polling-based architectures.
What development tools are officially supported for CY8C4A45PVI-481 firmware and hardware design?
PSoC Creator IDE (free Windows-based tool) is the official design environment, providing schematic capture, automatic analog/digital routing, pre-verified component libraries (e.g., CapSense, TCPWM, SCB), and integrated Arm SWD debugging. It also generates production-ready initialization code and supports export to GCC-based toolchains like Keil MDK and IAR Embedded Workbench for advanced firmware development.
CY8C4A45PVI-481 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 28-SSOP (0.209", 5.30mm Width)
- Series:
- PSOC™ 4 CY8C4Axx
- 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, CapSense, 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:
CY8C4A45PVI-481 FAQ
1.How can I place an order for CY8C4A45PVI-481 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4A45PVI-481 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 CY8C4A45PVI-481 reliable?
The price and inventory of CY8C4A45PVI-481 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4A45PVI-481 is usually 5 days.
3.What payment methods are accepted for CY8C4A45PVI-481?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4A45PVI-481 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4A45PVI-481?
CY8C4A45PVI-481 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4A45PVI-481 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 CY8C4A45PVI-481?
For technical support, including CY8C4A45PVI-481 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4A45PVI-481 requirements.
6.How does Aetrix verify that CY8C4A45PVI-481 is sourced from the original manufacturer or authorized distributors?
All CY8C4A45PVI-481 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 CY8C4A45PVI-481 meets industry standards.
7.What is the process for return or replacement of CY8C4A45PVI-481?
All CY8C4A45PVI-481 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4A45PVI-481, 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 CY8C4A45PVI-481 part is unused and in its original packaging.
Return procedure for CY8C4A45PVI-481:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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