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Infineon Technologies CY8C4546AZI-S473
- Part No.:
- CY8C4546AZI-S473
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
CY8C4546AZI-S473.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 48TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,083
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Product details
Overview
CY8C4546AZI-S473 from Infineon is a 32-bit Arm® Cortex®-M0+ microcontroller in the PSoC™ 4500S family, featuring 256 KB flash, 32 KB SRAM, and integrated CAPSENSE™ capacitive sensing with SmartSense auto-tuning. It delivers 48-MHz CPU performance, dual 12-bit 1-Msps SAR ADCs with simultaneous sampling, and eight TCPWM blocks for motor control timing - deployed in industrial HMI touch panels requiring robust water-tolerant user interfaces.
For engineers reviewing the CY8C4546AZI-S473 datasheet, CY8C4546AZI-S473 pinout, CY8C4546AZI-S473 application, or CY8C4546AZI-S473 equivalent, key selection criteria include Deep Sleep current (2.5 µA), CapSense SNR (>5:1), programmable analog routing, and SCB-based reconfigurable I²C/SPI/UART support across five serial interfaces.
Technical Context
The device integrates a single-core Arm Cortex-M0+ CPU with hardware-accelerated divide/square-root units and two independent DMA channels, enabling deterministic real-time execution for Field-Oriented Control (FOC) and Power Factor Correction (PFC). Its analog subsystem includes four opamps with Deep Sleep operation, two low-power comparators, and a dedicated capacitance-sensing sigma-delta ADC supporting >5:1 SNR.
Digital resources comprise eight TCPWM blocks supporting center-aligned PWM, quadrature decoding, and comparator-triggered kill signals; five Serial Communication Blocks (SCBs) dynamically configurable as I²C, SPI, or UART; and programmable logic blocks for Boolean port-level logic without firmware overhead.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M0+, 48 MHz max - enables deterministic real-time control with single-cycle multiply and hardware divide/sqrt acceleration. |
| Flash / SRAM | 256 KB flash with Read Accelerator / 32 KB SRAM - supports complex firmware with bootloader, CapSense tuning, and communication stacks. |
| ADC | Dual 12-bit 1-Msps SAR ADCs with channel sequencer and signal averaging - enables synchronized multi-channel sensor acquisition with noise suppression. |
| CapSense | Capacitive sigma-delta engine with SmartSense auto-tuning and >5:1 SNR - delivers reliable touch detection under wet conditions without manual calibration. |
| Power Modes | Deep Sleep mode at 2.5 µA system current with operational analog - extends battery life in always-on touch interfaces. |
| GPIO | Up to 53 programmable pins with configurable drive strength, slew rate, and CapSense/analog/digital assignment - simplifies PCB layout and reduces external components. |
| Clocks | 4–33 MHz ECO, 32-kHz WCO, ±2% IMO, 40-kHz ILO - provides flexible timing sources for precision timing, RTC, and low-power wake-up. |
Pinout & Package
Package: 48-pin TQFP (0.5-mm pitch), RoHS-compliant, lead-free, moisture-sensitive level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Primary power supply input | Accepts 1.71–5.5 V; powers digital core, analog blocks, and GPIOs - enables single-rail operation across industrial voltage ranges. |
| VSS | Ground reference | Common return path for all analog/digital domains; requires low-impedance connection to minimize noise coupling into CapSense. |
| P0[0]–P0[7] | Programmable GPIO bank | Support CapSense, analog input/output, or digital logic; each pin configurable for high-drive or low-slew modes to reduce EMI in touch applications. |
| SCL / SDA | I²C interface pins | Shared with GPIOs P1[0]/P1[1]; enable host communication with sensors or displays using standard I²C protocol at up to 1 Mbps. |
| SWDIO / SWCLK | Serial Wire Debug interface | Standard Arm SWD pins for programming and full-chip debugging in production systems - no external emulator required. |
Key Features
| Feature | Design Value |
|---|---|
| SmartSense auto-tuning | Hardware-accelerated CapSense calibration eliminates manual parameter adjustment and maintains touch accuracy across temperature/humidity drift. |
| Reconfigurable SCBs | Five serial blocks independently assignable as I²C, SPI, or UART at runtime - reduces BOM count and enables flexible peripheral expansion without hardware change. |
| TCPWM kill signal | Comparator-triggered immediate PWM shutdown - ensures safe motor drive fault response within one clock cycle for IEC 61800 compliance. |
| Deep Sleep analog operation | Opamps and comparators remain active during 2.5-µA Deep Sleep - enables continuous capacitive proximity wake-up without full MCU wake. |
| Programmable analog routing | Flexible interconnect between opamps, ADCs, IDACs, and GPIOs - allows custom sensor front-end design without external signal conditioning ICs. |
Applications
| Industrial HMI Touch Panels | Smart Appliance Control Interfaces |
|---|---|
Use Scenario: Waterproof touch buttons on washing machine control panels exposed to steam and condensation. IC Role / Device Role / Timing Role: Primary MCU executing CapSense firmware, managing display updates via SPI, and controlling motor drivers via TCPWM. Use Value: >5:1 SNR and SmartSense maintain reliable touch detection without recalibration, even after prolonged humidity exposure. | Use Scenario: Oven control panel with rotary encoder emulation and temperature monitoring via thermistor ADC. IC Role / Device Role / Timing Role: System controller handling CapSense slider, 12-bit SAR ADC acquisition, and PWM fan speed regulation. Use Value: Dual SAR ADCs with signal averaging suppress thermal noise, while programmable opamp gain configures thermistor interface without external amplifiers. |
| Motor Drive Reference Designs | IoT Edge Sensor Nodes |
Use Scenario: BLDC motor control board implementing Field-Oriented Control with current sensing and position feedback. IC Role / Device Role / Timing Role: Real-time FOC executor using MCA hardware accelerators, TCPWM for three-phase PWM generation, and comparator-triggered fault shutdown. Use Value: Hardware sqrt/divide blocks cut FOC loop time by >40% versus software-only implementation, enabling 20-kHz switching frequencies. | Use Scenario: Battery-powered environmental monitor collecting temperature, humidity, and air quality data. IC Role / Device Role / Timing Role: Low-power system controller managing sensor I²C reads, CapSense wake-on-approach, and BLE-ready UART output. Use Value: 2.5-µA Deep Sleep with active analog blocks enables multi-year battery life while maintaining instant wake-up responsiveness. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable mixed-signal MCU applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY8C4547AZI-S473 | Same die, 64-pin TQFP package with 53 GPIOs vs. 48-pin's 44 GPIOs; identical peripherals and memory. | Requires larger PCB footprint; supports more external sensors or interfaces where pin count exceeds 44. | Select when additional GPIOs or routing flexibility outweighs size/cost constraints. |
| CY8C4548AZI-S473 | Same package, but with 128 KB flash / 16 KB SRAM - half the memory capacity of CY8C4546AZI-S473. | Suitable for simpler CapSense + basic control tasks without complex communication stacks or large firmware images. | Select for cost-sensitive designs where firmware size remains under 128 KB and RAM usage stays below 16 KB. |
Compared with CY8C4547AZI-S473 and CY8C4548AZI-S473, the CY8C4546AZI-S473 uniquely balances 48-pin compactness, full 256 KB/32 KB memory, and complete analog/digital feature set - making it optimal for space-constrained industrial HMIs needing full CapSense and motor control capability.
Availability
CY8C4546AZI-S473 is available at Aetrix Electronics and suitable for industrial HMI touch panels, smart appliance interfaces, motor drive reference designs, and IoT edge sensor nodes requiring stable component supply and long-term lifecycle support.
Supply support for CY8C4546AZI-S473 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.
This part belongs to the PSoC™ 4500S product line, designed specifically for cost-sensitive, highly integrated embedded systems requiring programmable analog/digital resources, robust capacitive sensing, and real-time motor control - targeting industrial and consumer HMI applications.
FAQ
What development tools are officially supported for CY8C4546AZI-S473?
Infineon officially supports both ModusToolbox™ (cross-platform, Eclipse-based) and PSoC™ Creator (Windows-only, schematic-driven IDE) for firmware development, hardware configuration, and CapSense tuning. MiniProg4 is the recommended programmer/debugger, and the CY8CKIT-045S Pioneer Kit provides validated hardware for rapid prototyping and debug.
Does CY8C4546AZI-S473 support hardware encryption or secure boot?
No - CY8C4546AZI-S473 does not include hardware cryptographic accelerators, secure boot ROM, or flash write protection beyond standard lock bits. It lacks dedicated security peripherals found in PSoC™ 4100S Plus or PSoC™ 6 families. Secure firmware update must be implemented in software using external trusted elements or external secure storage.
Can the internal opamps drive capacitive touch sensors directly without external components?
Yes - the four integrated opamps support high-drive external mode and can directly buffer CapSense analog signals. When configured with internal feedback and proper IDAC sourcing, they eliminate need for external opamp buffers in most touch button/slider implementations, reducing BOM and PCB area.
What is the maximum operating temperature range for CY8C4546AZI-S473?
The "ZI" suffix denotes Industrial grade: –40 °C to +85 °C ambient operating temperature. This rating is validated per Infineon's qualification standards and applies across full voltage (1.71–5.5 V) and frequency (up to 48 MHz) ranges, with guaranteed Deep Sleep current and CapSense performance within this envelope.
CY8C4546AZI-S473 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 48-LQFP
- Series:
- PSOC™ 4 CY8C4500
- 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, POR, PWM, WDT
- Number of I/O:
- 38
- Program Memory Size:
- 64KB (64K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 16K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.71V ~ 5.5V
- Data Converters:
- A/D 16x10b Slope, 16x12b SAR; D/A 2xIDAC
- Oscillator Type:
- External
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY8C4546AZI-S473 FAQ
1.How can I place an order for CY8C4546AZI-S473 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4546AZI-S473 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 CY8C4546AZI-S473 reliable?
The price and inventory of CY8C4546AZI-S473 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4546AZI-S473 is usually 5 days.
3.What payment methods are accepted for CY8C4546AZI-S473?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4546AZI-S473 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4546AZI-S473?
CY8C4546AZI-S473 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4546AZI-S473 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 CY8C4546AZI-S473?
For technical support, including CY8C4546AZI-S473 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4546AZI-S473 requirements.
6.How does Aetrix verify that CY8C4546AZI-S473 is sourced from the original manufacturer or authorized distributors?
All CY8C4546AZI-S473 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 CY8C4546AZI-S473 meets industry standards.
7.What is the process for return or replacement of CY8C4546AZI-S473?
All CY8C4546AZI-S473 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4546AZI-S473, 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 CY8C4546AZI-S473 part is unused and in its original packaging.
Return procedure for CY8C4546AZI-S473:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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