Infineon Technologies CY8C5248AXI-047

Overview

CY8C5248AXI-047 from Infineon Technologies (acquired Cypress Semiconductor) is a programmable system-on-chip (PSoC® 5) integrating a 32-bit ARM Cortex-M3 CPU, 256 KB flash, 64 KB SRAM, 12-bit SAR ADC (700 ksps), dual comparators (95 ns), and 24 UDBs for configurable digital logic. It operates from 2.7 V to 5.5 V, supports USB 2.0 Full-Speed, and delivers ultra-low power operation down to 300 nA in hibernate mode with RAM retention - deployed in industrial sensor hubs requiring mixed-signal integration and firmware-upgradable functionality.

For engineers reviewing the CY8C5248AXI-047 datasheet, CY8C5248AXI-047 pinout, CY8C5248AXI-047 application, or CY8C5248AXI-047 equivalent, key selection considerations include its 60 GPIO + 8 SIO + 2 USBIO routing flexibility, CapSense®-enabled touch I/O, programmable clock tree (up to 40 MHz), and on-chip EEPROM (2 KB, 1M cycles) for field-configurable calibration storage.

Technical Context

The CY8C5248AXI-047 implements a tightly coupled architecture where the ARM Cortex-M3 core interfaces directly with a programmable digital subsystem (24 UDBs, DSI routing, 4 × 16-bit TCPWM blocks) and analog subsystem (SAR ADC, IDAC/VDAC, 2× comparators, internal 1.024 V ±1% reference). All peripherals are routed via configurable interconnects, enabling dynamic reassignment of functions to any GPIO without hardware change.

Its clocking system combines multiple oscillators - IMO (3–24 MHz), crystal oscillator (4–25 MHz), PLL (up to 40 MHz), and low-power ILO (1/33/100 kHz) - with per-peripheral clock gating and fractional dividers. Power management includes five low-power modes (Active, Sleep, Deep Sleep, Hibernate, and Stop), each with defined wake sources, memory retention states, and peripheral enable control.

Key Specifications

Pinout & Package

Package: 100-pin TQFP (14 mm × 14 mm, 0.5 mm pitch), RoHS-compliant, industrial temperature range (–40 °C to +85 °C).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar programmable SoC applications.

Compared with CY8C5248AXI-047, the CY8C5868AXI-LP039 trades USB for CAN and doubles memory, while the STM32F412ZGT6 offers superior compute but lacks on-die analog routing and CapSense® - making CY8C5248AXI-047 optimal for rapid prototyping of mixed-signal UIs and sensor edge nodes.

Availability

CY8C5248AXI-047 is available at Aetrix Electronics and suitable for industrial sensor hubs, capacitive touch HMIs, programmable power monitors, and USB-C charger controllers requiring stable component supply, long-term lifecycle support, and consistent parametric performance across temperature and voltage ranges.

Supply support for CY8C5248AXI-047 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 acquired Cypress Semiconductor in 2020 and now manufactures the PSoC® family. Cypress pioneered programmable analog-digital SoCs for rapid embedded system development with hardware-software co-design.

The CY8C52 family targets applications demanding high analog precision, flexible digital logic, and ultra-low power - especially in industrial automation, medical instrumentation, and human-machine interface systems where last-minute feature changes are common.

FAQ

Does CY8C5248AXI-047 support USB device enumeration without external crystal?

No. Full-Speed USB 2.0 operation requires an external 24 MHz crystal connected to XIN/XOUT pins. The internal IMO does not meet USB timing jitter requirements. Crystal load capacitance must be 12 pF, and layout must follow USB differential pair impedance (90 Ω) and length-matching guidelines per the CY8C52 Family Datasheet Section 7.5.

Can all 60 GPIOs be used simultaneously for CapSense®?

Yes - all GPIOs support CapSense® sensing, but practical channel count depends on scan time and resolution. With default settings, up to 32 buttons/sliders can be scanned in <10 ms. Higher counts require optimized firmware using DMA-assisted scanning and reduced resolution, as detailed in AN76115 and CapSense® Component datasheet.

What is the maximum sustained ADC sampling rate with DMA transfer enabled?

The SAR ADC achieves 700 ksps in burst mode with DMA configured for contiguous memory writes. At this rate, 12-bit samples fill a 1 KB buffer in ~1.4 ms. To sustain continuous streaming, the firmware must service DMA interrupts or use chained descriptors - verified in PSoC Creator v4.4+ with TCPWM-triggered ADC start and scatter-gather DMA.

Is the 2 KB EEPROM truly byte-erasable and wear-leveled in firmware?

Yes. The EEPROM block supports true byte-level writes and erases. Wear leveling must be implemented in application firmware using the EEPROM middleware library (CySysEEPROMWrite() with address rotation), as the hardware does not auto-manage wear distribution. Each byte supports 1 million cycles with 20-year data retention at 85 °C.