Infineon Technologies CY8C5247LTI-089

Overview

CY8C5247LTI-089 from Infineon Technologies (acquired Cypress Semiconductor) is a programmable system-on-chip (PSoC® 5) integrating a 32-bit ARM Cortex-M3 CPU core, 256 KB flash, 64 KB SRAM, 2 KB EEPROM, 24 UDBs, and mixed-signal peripherals including 12-bit SAR ADC (700 ksps), dual comparators (95 ns), and USB 2.0 FS PHY - deployed in industrial sensor hubs and embedded control systems requiring reconfigurable analog/digital signal processing.

For engineers reviewing the CY8C5247LTI-089 datasheet, CY8C5247LTI-089 pinout, CY8C5247LTI-089 application, or CY8C5247LTI-089 equivalent, key selection criteria include its 40 MHz CPU clock, 2.7–5.5 V operating range, 60 GPIO + 8 SIO + 2 USBIO I/O architecture, low-power hibernate mode (300 nA with RAM retention), and full-speed USB interface support with external 24 MHz crystal.

Technical Context

The device implements a hierarchical routing fabric linking configurable universal digital blocks (UDBs), analog subsystem resources (ADC, DAC, comparators), and CPU subsystem via AMBA AHB bus. Its digital interconnect supports per-pin routing of any peripheral signal to any GPIO or SIO, enabling dynamic reconfiguration without hardware change.

Analog signal acquisition uses a 1.024 V ±1% internal reference feeding a successive approximation register (SAR) ADC with 12-bit resolution at up to 700 ksps, while analog output includes an 8-bit IDAC (5.5 Msps) or VDAC (1 Msps), both routable to any GPIO. The USB 2.0 Full-Speed PHY requires an external 24 MHz crystal for timing compliance.

Key Specifications

Pinout & Package

Package: 68-pin QFN (9 mm × 9 mm, 0.5 mm pitch), thermally enhanced with exposed thermal pad - optimized for compact industrial PCB layouts requiring efficient heat dissipation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F411RE and MAX32660, CY8C5247LTI-089 uniquely combines USB 2.0 FS PHY, CapSense®, and UDB-based digital logic in one die - enabling single-chip sensor-to-PC solutions without companion ICs or FPGA glue logic.

Availability

CY8C5247LTI-089 is available at Aetrix Electronics and suitable for industrial sensor hubs, USB human interface devices, low-power remote monitors, and embedded motor control nodes requiring stable component supply and long-term lifecycle support.

Supply support for CY8C5247LTI-089 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 owns the PSoC® portfolio - a leader in programmable mixed-signal ICs with focus on automotive, industrial, and IoT applications.

The CY8C52 family belongs to the PSoC 5 platform, designed specifically for applications demanding integrated analog signal acquisition, reconfigurable digital logic, and USB connectivity in a single chip - targeting rapid prototyping and late-stage design iteration.

FAQ

Does CY8C5247LTI-089 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 cannot meet USB timing jitter specifications. Crystal load capacitance must be 12 pF, and startup time is specified at 10 ms maximum.

Can all 60 GPIO pins be used simultaneously for analog input acquisition?

Yes, all GPIO pins support analog mux input routing. However, simultaneous sampling is limited by the single SAR ADC's 700 ksps throughput - meaning up to ~11.7 kS/s per channel when scanning 60 inputs sequentially using DMA-driven burst mode.

What is the maximum drive strength of SIO pins in open-drain mode?

SIO pins support 25 mA sink current in strong output mode, but open-drain configuration limits sink current to 8 mA per pin under 3.3 V VDDIO. This is verified in the "I/O Electrical Characteristics" table (Section 11.4) of the datasheet Rev. *D.

Is the 2 KB EEPROM truly byte-erasable and wear-levelled?

Yes. The on-die EEPROM supports byte-level writes with guaranteed 1 million endurance cycles and 20-year data retention at 85 °C. Wear leveling is implemented in hardware via shadow-page mapping - no firmware overhead required for reliable nonvolatile parameter storage.