Infineon Technologies CY8C5688AXI-LP099

Overview

CY8C5688AXI-LP099 from Infineon Technologies (formerly Cypress Semiconductor) is a 32-bit Arm® Cortex®-M3 based programmable system-on-chip (PSoC® 5LP) with up to 80 MHz operation, 256 KB flash, 64 KB RAM, and integrated analog/digital peripherals including full CAN 2.0b, USB 2.0 Full-Speed, and CapSense®. It supports 1.71–5.5 V supply, –40 to 85 °C ambient operation, and ultra-low-power modes (300 nA hibernate). Used in industrial HMI, medical sensor hubs, and smart metering systems requiring mixed-signal integration and field-upgradable firmware.

For engineers reviewing the CY8C5688AXI-LP099 datasheet, CY8C5688AXI-LP099 pinout, CY8C5688AXI-LP099 application, or CY8C5688AXI-LP099 equivalent, key selection criteria include its 99-pin CSP package, dual SAR ADCs, programmable UDB array for custom logic, and on-chip USBIO/USBFS peripheral - critical for embedded control with analog sensing, communication, and secure firmware updates.

Technical Context

The CY8C5688AXI-LP099 implements a tightly coupled architecture where the Arm Cortex-M3 CPU interfaces directly with a configurable digital subsystem (24 UDBs), analog subsystem (dual 12-bit SAR ADCs, four opamps, four comparators), and flexible routing fabric enabling any peripheral signal to be assigned to any GPIO. Its clocking includes internal PLL (up to 80 MHz), 32.768-kHz watch crystal support, and 12 programmable dividers.

Power management integrates six independent domains, boost regulator (0.5–5 V), and three low-power modes: active (3.1 mA @ 6 MHz), sleep (2 µA), and hibernate (300 nA with RAM retention). Debug uses SWD/JTAG with embedded trace and bootloader support over USB/I2C/SPI/UART.

Key Specifications

Pinout & Package

Package: 99-pin WLCSP (5.2 × 5.2 mm, 0.4 mm pitch), ball-grid array with perimeter and interior balls. Designed for high-density PCB layouts and automated assembly in compact consumer and medical devices.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY8C5688AXI-LP099, the CY8C5888LTI-LP097 offers identical functionality in a larger, thermally robust package, while the STM32F412ZGT6 demands external analog components and separate firmware layers - increasing design time and validation effort for mixed-signal applications.

Availability

CY8C5688AXI-LP099 is available at Aetrix Electronics and suitable for industrial HMI, portable medical devices, smart metering, and automated test equipment requiring stable component supply, long-term lifecycle support, and wafer-level packaging for miniaturized designs.

Supply support for CY8C5688AXI-LP099 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 global semiconductor leader headquartered in Munich, Germany, specializing in power management, automotive, industrial, and security solutions.

The PSoC® 5LP product line was originally developed by Cypress Semiconductor and continues under Infineon to deliver highly integrated, configurable mixed-signal SoCs targeting embedded control applications demanding analog sensing, digital processing, and communication in a single die.

FAQ

Does CY8C5688AXI-LP099 support USB device enumeration without an external crystal?

Yes. The part integrates an internal USB-capable oscillator trimmed to ±0.25% accuracy, enabling full USB 2.0 Full-Speed (12 Mbps) device enumeration and data transfer without requiring an external 48 MHz crystal - reducing BOM count and PCB area.

What is the maximum number of CapSense® electrodes supported on this device?

CY8C5688AXI-LP099 supports up to 62 self- or mutual-capacitance sensors using its dedicated CapSense® CSD block and IDACs. Electrode count is limited by available GPIOs and scan time constraints, not by fixed hardware channels.

Can the dual SAR ADCs operate simultaneously with independent triggers?

Yes. Both 12-bit SAR ADCs can be triggered independently via hardware events (e.g., timer overflow, DSI signal) or software, and configured for different sample rates, reference voltages (VREF or VDDA), and resolution settings - enabling true parallel acquisition of multiple analog signals.

Is the 99-pin CSP package compatible with standard reflow soldering processes?

Yes. The CY8C5688AXI-LP099's 99-pin WLCSP is qualified for IPC/JEDEC J-STD-020 moisture sensitivity level 3 and supports standard lead-free reflow profiles (peak 260 °C). Its 0.4 mm pitch requires Class III PCB fabrication but is compatible with automated SMT lines using appropriate stencil design and placement accuracy.