CY7C64356-48LTXC

Application Specific Microcontrollers Overview

The CY7C64356-48LTXC is a USB interface integrated circuit manufactured by Infineon Technologies, formerly Cypress Semiconductor. It functions as a Full Speed (FS) USB controller compliant with the USB 1.1 standard. The device supports data rates up to 12 Mb/s and includes an internal 16Kb memory buffer. It operates within a supply voltage range of 3 V to 5.5 V, with a typical operating current of 4 mA. The component is housed in a 48-pin QFN package and is designed for surface mount installation. The specified operating temperature range extends from 0°C to +70°C.

Application Specific Microcontrollers Feature Summary

• USB 1.1 Full Speed Controller supporting 12 Mb/s data transfer
• Integrated 16Kb memory buffer for data handling
• Wide supply voltage operation from 3 V to 5.5 V
• Low power consumption with 4 mA operating current
• Compact 48-pin QFN surface-mount package

Application Specific Microcontrollers Applications

• Peripheral controller interfaces for USB-enabled devices
• Embedded systems requiring USB 1.1 connectivity
• Industrial control units with USB communication needs

Application Specific Microcontrollers Procurement Notes

This component is classified as End-of-Life (EOL) by the manufacturer. Production has ceased, and availability is limited to existing stock or third-party distributors. Verification of authenticity and lot traceability is critical when sourcing from non-original channels. Buyers should confirm the specific suffix variations and ensure compatibility with their design requirements before procurement due to the discontinued status.

Application Specific Microcontrollers Selection Notes

Designers should verify that the USB 1.1 Full Speed specification meets the bandwidth requirements of the target application, as this part does not support High Speed or Super Speed modes. The 3 V to 5.5 V input range allows flexibility in power supply design but requires appropriate decoupling. The 48-QFN package necessitates careful PCB layout for thermal management and signal integrity. Ensure the host system supports the necessary USB protocol stack for this legacy controller.

Application Specific Microcontrollers Part Context

The CY7C64356 belongs to the Cypress/Infineon CY7C64356 series of USB controllers. This family was widely used in embedded applications prior to the dominance of USB 2.0 and later standards. The transition from Cypress Semiconductor to Infineon Technologies occurred through acquisition, leading to the current branding. This specific part number represents a variant within that established product line focused on cost-effective, low-speed USB connectivity.

Application Specific Microcontrollers Replacement Considerations

As the part is End-of-Life, direct pin-to-pin replacements may be scarce. Engineers should evaluate newer USB controllers from Infineon or other manufacturers that offer USB 2.0/3.0 compatibility. Software re-engineering may be required if migrating to higher-speed protocols. Verify that alternative components support the same 16Kb buffer size and QFN-48 footprint to minimize board redesign efforts.