Infineon Technologies CY8C4548AXQ-S485

Overview

CY8C4548AXQ-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 (2×12-bit SAR ADCs, 4 opamps), digital logic (TCPWM, SCBs), CAPSENSE™ capacitive sensing, and motor control acceleration (MCA). Delivered in a 48-pin TQFP package with 1.71–5.5 V operation, it targets embedded human-interface and motor-control applications requiring mixed-signal reconfigurability.

For engineers reviewing the CY8C4548AXQ-S485 datasheet, CY8C4548AXQ-S485 pinout, CY8C4548AXQ-S485 application, or CY8C4548AXQ-S485 equivalent, key selection criteria include its dual 12-bit SAR ADCs with simultaneous sampling, Deep Sleep current of 2.5 µA, 53 GPIOs with CapSense support, and hardware-accelerated Field Oriented Control via MCA.

Technical Context

The CY8C4548AXQ-S485 implements a tightly coupled subsystem where the Arm® Cortex®-M0+ core interfaces directly with programmable analog blocks (CTBm, SAR ADC, IDAC) and digital peripherals (TCPWM, SCB) through a configurable interconnect fabric. Its CAPSENSE™ sigma-delta engine achieves >5:1 SNR and supports automatic SmartSense tuning without host CPU intervention.

It features five reconfigurable Serial Communication Blocks supporting I²C/SPI/UART concurrently, eight 16-bit TCPWM blocks with quadrature decode and comparator-triggered kill signals, and two hardware divide/square-root accelerators dedicated to motor control algorithms like FOC and PFC.

Key Specifications

Pinout & Package

Package: 48-pin TQFP (7 mm × 7 mm, 0.5 mm pitch), RoHS-compliant, lead-free.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar programmable mixed-signal MCU applications.

Compared with CY8C4547AZI-S485, this part offers smaller footprint and lower BOM cost but fewer I/Os; compared with CY8C4546LQI-S485, it provides full motor control capability and double memory - essential for real-time FOC and concurrent wireless stacks.

Availability

CY8C4548AXQ-S485 is available at Aetrix Electronics and suitable for smart home touch panels, industrial motor drives, medical patient monitors, and automotive body control modules requiring stable component supply and long-term design-in support.

Supply support for CY8C4548AXQ-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 MCUs, and security solutions, with global manufacturing and R&D infrastructure.

The PSoC™ 4500S product line targets reconfigurable embedded systems requiring integrated analog, digital, and capacitive sensing - designed specifically for human-interface, motor control, and industrial IoT edge nodes.

FAQ

What development tools are officially supported for CY8C4548AXQ-S485?

Infineon officially supports ModusToolbox™ software (cross-platform, Eclipse-based) and PSoC™ Creator (Windows-only IDE). Both provide full peripheral configuration, code generation, and debug via MiniProg4 or onboard SWD. The CY8CKIT-045S Pioneer Kit is the reference hardware platform with pre-installed firmware examples and schematics.

Does CY8C4548AXQ-S485 support true hardware-based capacitive sensing without CPU involvement?

Yes. Its CAPSENSE™ sigma-delta sensing engine operates autonomously using dedicated hardware, including automatic SmartSense tuning and baseline tracking. The CPU remains idle during sensing cycles, waking only upon threshold crossing or completion - enabling ultra-low-power touch wake-up at <2.5 µA system current.

Can the TCPWM blocks generate center-aligned PWM with dead-time insertion for 3-phase inverter control?

Yes. Each TCPWM block supports center-aligned, edge-aligned, and pseudo-random PWM modes. Dead-time insertion is implemented in hardware via complementary output pairs and configurable delay registers, with kill signal inputs tied to analog comparators for sub-100 ns fault response - meeting IEC 60730 Class B safety requirements.

Is the 48-MHz system clock derived solely from the PLL, or can it run directly from an external crystal?

The 48-MHz clock is generated exclusively by the internal PLL locked to either the 4–33 MHz external crystal oscillator (ECO) or the ±2% internal main oscillator (IMO). An external crystal cannot directly drive the core at 48 MHz; it must pass through the PLL for frequency multiplication and jitter reduction required by the Arm® Cortex®-M0+.