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Infineon Technologies CY8C4548AXI-S485
- Part No.:
- CY8C4548AXI-S485
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
CY8C4548AXI-S485.pdf
- Description:
- IC MCU 32BIT 256KB FLASH 64TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,382
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Product details
Overview
CY8C4548AXI-S485 from Infineon is a 32-bit PSoC™ 4500S microcontroller based on the Arm® Cortex®-M0+ CPU, operating at up to 48 MHz. It integrates programmable analog (two 12-bit 1-Msps SAR ADCs, four opamps), digital logic (eight TCPWM blocks, five SCBs), and capacitive sensing (CapSense™ with SmartSense auto-tuning) for embedded control in industrial HMI and motor-drive interfaces.
For engineers reviewing the CY8C4548AXI-S485 datasheet, CY8C4548AXI-S485 pinout, CY8C4548AXI-S485 application, or CY8C4548AXI-S485 equivalent, key selection criteria include Deep Sleep current (2.5 µA), CapSense SNR (>5:1), 48-MHz PLL clock accuracy, and reconfigurable SCB serial peripheral mapping across I²C/SPI/UART.
Technical Context
The device implements a tightly coupled mixed-signal architecture where analog blocks (opamps, ADCs, IDACs) and digital peripherals (TCPWM, SCBs) are routed via a programmable interconnect matrix. Its CapSense sigma-delta engine operates independently of CPU load and supports simultaneous sampling with hardware-accelerated signal averaging.
System-level timing relies on multiple synchronized clock domains: a 48-MHz PLL-driven main domain, a 32-kHz WCO for RTC, and a 40-kHz ILO for Deep Sleep wake-up. The two Divide and Square Root accelerators directly support Field-Oriented Control (FOC) math in motor applications without CPU intervention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M0+, 48 MHz max - enables real-time deterministic control with single-cycle multiply for PID loops. |
| Flash / SRAM | 256 KB flash / 32 KB SRAM - supports complex firmware with bootloader, CapSense tuning, and communication stacks. |
| ADC Performance | Two 12-bit SAR ADCs @ 1 Msps, differential mode - allows simultaneous voltage/current sensing in motor control with <1 µs conversion latency. |
| CapSense SNR | >5:1 signal-to-noise ratio - ensures reliable touch detection under wet conditions and EMI-rich industrial environments. |
| Deep Sleep Current | 2.5 µA system current - enables battery-powered HMI nodes with multi-year operation on coin-cell power. |
| GPIO Count | 53 programmable pins in 48-pin TQFP - all support CapSense, analog input, or digital logic with configurable drive strength and slew rate. |
| Serial Peripherals | Five reconfigurable SCBs - each can be independently assigned as I²C master/slave, SPI master/slave, or UART, enabling flexible sensor/actuator interfacing. |
Pinout & Package
Package: 48-pin TQFP (7 mm × 7 mm, 0.5-mm pitch), RoHS-compliant, lead-free, moisture-sensitive level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Core & I/O supply | 1.71–5.5 V input; powers all digital logic, analog blocks, and GPIO drivers. |
| VSS | Digital ground | Reference return for digital circuitry and SCB/USB PHY signals. |
| P0[0]–P0[7] | General-purpose I/O | Support CapSense, analog input, or digital logic; configurable pull-up/down and drive strength. |
| P1[0]–P1[7] | General-purpose I/O | Same capabilities as Port 0; includes dedicated SWD debug pins (SWDCK, SWDIO). |
| XRES | Active-low reset | Asynchronous external reset input; debounced internally for noise immunity. |
| XTAL_IN / XTAL_OUT | External crystal oscillator | Supports 4–33 MHz crystals for precise timing; required for USB or high-accuracy PWM generation. |
Key Features
| Feature | Design Value |
|---|---|
| SmartSense auto-tuning | Hardware-accelerated CapSense calibration eliminates manual parameter adjustment and maintains stable touch performance across temperature/humidity drift. |
| Programmable analog routing | Direct connection between opamp outputs and ADC inputs without GPIO routing - reduces signal path noise and latency for precision sensor front-ends. |
| Motor Control Accelerator (MCA) | Dedicated hardware square root and divide units offload FOC inner-loop calculations, freeing >30% CPU bandwidth for communication and UI tasks. |
| Reconfigurable SCBs | Runtime reassignment of serial interface type (I²C/SPI/UART) per block - enables field-upgradable communication protocols without PCB redesign. |
| Deep Sleep with analog active | Analog comparators and CapSense sigma-delta engine remain operational while CPU and digital logic are powered down - enables ultra-low-power wake-on-touch or threshold-triggered events. |
Applications
| Industrial HMI Panels | Brushless DC Motor Controllers |
|---|---|
Use Scenario: Touch-enabled operator interface on factory automation panels with IP65-rated enclosures and ambient temperature swings from −25°C to +70°C. IC Role / Device Role / Timing Role: Primary MCU executing CapSense firmware, driving segmented LCD, and managing Modbus RTU over UART SCB. Use Value: SmartSense maintains consistent touch response across humidity variations; 2.5 µA Deep Sleep extends battery life in wireless panel variants. | Use Scenario: Closed-loop speed/torque control of 3-phase BLDC motors in HVAC blowers and pump drives. IC Role / Device Role / Timing Role: Real-time FOC executor using MCA hardware accelerators, ADC-sampled current feedback, and center-aligned PWM generation via TCPWM blocks. Use Value: Hardware square root reduces FOC loop latency to <2 µs, enabling 20-kHz PWM switching with stable current regulation. |
| Smart Home Sensor Hubs | Medical Patient Monitoring Devices |
Use Scenario: Multi-sensor aggregation node collecting temperature, motion, and ambient light data, transmitting via BLE or Wi-Fi co-processor. IC Role / Device Role / Timing Role: System controller managing sensor I²C interfaces, local data preprocessing, and low-power wake scheduling via WCO timer. Use Value: Five SCBs allow concurrent I²C sensor reads and UART debug output without software arbitration overhead. | Use Scenario: Portable ECG/SpO₂ monitor requiring clinical-grade signal integrity and battery longevity exceeding 72 hours. IC Role / Device Role / Timing Role: Analog front-end controller with simultaneous differential ADC sampling, opamp-based instrumentation amplification, and isolated UART telemetry. Use Value: 12-bit SAR ADC with hardware averaging achieves >80 dB SNR for sub-mV biopotential signals; Deep Sleep minimizes quiescent drain. |
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 |
|---|---|---|---|
| CY8C4546AZI-S485 | Same core, but 256 KB flash / 32 KB SRAM reduced to 128 KB flash / 16 KB SRAM; identical pinout and peripheral set. | Suitable for simpler CapSense-only HMI or sensor nodes without complex communication stacks. | Select when firmware size is <100 KB and no dual ADC simultaneous sampling is required. |
| CY8C4547AZI-S485 | Same package and memory, but lacks CapSense sigma-delta block; retains analog opamps and SAR ADCs. | Targeted at analog-sensing applications (e.g., precision thermistor readout) without touch interface. | Choose when CapSense is unnecessary but high-precision analog acquisition remains critical. |
Compared with CY8C4546AZI-S485 and CY8C4547AZI-S485, the CY8C4548AXI-S485 uniquely delivers full CapSense sigma-delta capability alongside maximum memory and dual high-speed ADCs - making it the only variant qualified for production-grade industrial touch+motor-control convergence.
Availability
CY8C4548AXI-S485 is available at Aetrix Electronics and suitable for industrial HMI panels, brushless DC motor controllers, smart home sensor hubs, and medical patient monitoring devices requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for CY8C4548AXI-S485 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 ICs, and embedded controllers, with global manufacturing and R&D centers across Europe, Asia, and the Americas.
The PSoC™ 4500S product line targets cost-sensitive, high-integration embedded systems requiring programmable analog/digital resources in a single chip - specifically designed for industrial HMI, motor control, and sensor-edge applications demanding both CapSense robustness and real-time deterministic execution.
FAQ
What debug interface does CY8C4548AXI-S485 support?
CY8C4548AXI-S485 uses Arm Serial-Wire Debug (SWD) with standard two-pin interface (SWDCK and SWDIO). Debug circuits are enabled by default and can be disabled in firmware; re-enabling requires full flash erase and reprogramming. It is fully compatible with MiniProg4, J-Link, and CMSIS-DAP tools.
Does CY8C4548AXI-S485 support USB connectivity?
No, CY8C4548AXI-S485 does not include a USB physical layer or USB controller. It supports USB host/device functionality only through external USB-to-UART bridge ICs connected to its SCB UART interface. USB-native variants exist in the PSoC™ 4200L and PSoC™ 6 families.
Can CapSense operate during Deep Sleep mode?
Yes, CapSense sigma-delta sensing remains fully active in Deep Sleep mode with only 2.5 µA total system current. The hardware engine performs baseline tracking, noise filtering, and finger detection autonomously without CPU involvement, generating interrupts on touch events.
What is the maximum operating temperature for CY8C4548AXI-S485?
CY8C4548AXI-S485 is rated for industrial temperature range: −40°C to +85°C ambient. The "X" in the part number denotes extended temperature grade, validated per JEDEC JESD22-A108. Operation beyond +85°C may cause timing violations or increased leakage current.
CY8C4548AXI-S485 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 64-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:
- 53
- Program Memory Size:
- 256KB (256K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 32K 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:
CY8C4548AXI-S485 FAQ
1.How can I place an order for CY8C4548AXI-S485 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4548AXI-S485 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 CY8C4548AXI-S485 reliable?
The price and inventory of CY8C4548AXI-S485 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4548AXI-S485 is usually 5 days.
3.What payment methods are accepted for CY8C4548AXI-S485?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4548AXI-S485 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4548AXI-S485?
CY8C4548AXI-S485 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4548AXI-S485 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 CY8C4548AXI-S485?
For technical support, including CY8C4548AXI-S485 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4548AXI-S485 requirements.
6.How does Aetrix verify that CY8C4548AXI-S485 is sourced from the original manufacturer or authorized distributors?
All CY8C4548AXI-S485 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 CY8C4548AXI-S485 meets industry standards.
7.What is the process for return or replacement of CY8C4548AXI-S485?
All CY8C4548AXI-S485 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4548AXI-S485, 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 CY8C4548AXI-S485 part is unused and in its original packaging.
Return procedure for CY8C4548AXI-S485:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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