SL811HS-JCT

Application Specific Microcontrollers Overview

The SL811HS-JCT is an embedded USB host and slave controller manufactured by Cypress Semiconductor. It conforms to the USB Specification 1.1, supporting full-speed (12 Mbps) and low-speed (1.5 Mbps) data transfers. The device integrates a USB Serial Interface Engine (SIE), transceivers, and a single-root hub. It features 256 bytes of internal SRAM for data buffering and utilizes an 8-bit bidirectional microprocessor bus interface. The component operates on a 3.3V power supply using 0.35 micron CMOS technology and is housed in a 28-pin PLCC package.

Application Specific Microcontrollers Feature Summary

• Supports both USB host and slave modes under software control with automatic speed detection
• Integrates SIE, USB transceivers, and single-root hub functionality
• Includes 256-byte internal SRAM buffer with auto-address increment mode
• Features 5V-tolerant 8-bit bidirectional data and port I/O interface

Application Specific Microcontrollers Applications

• Embedded systems requiring USB connectivity
• Microprocessor and microcontroller interfaces
• DSP-based system designs

Application Specific Microcontrollers Procurement Notes

Verify the manufacturer origin as Cypress Semiconductor Corp or its successors following industry acquisitions. Confirm the package type is the 28-pin PLCC variant corresponding to the -JCT suffix. Ensure compatibility with 3.3V logic levels and check for specific revision markings that may indicate manufacturing lot variations.

Application Specific Microcontrollers Selection Notes

Select this component when a standard microprocessor bus interface is required for USB communication in embedded applications. It is suitable for designs needing both host and peripheral capabilities without external protocol controllers. Consider the 28-pin PLCC footprint during PCB layout and ensure the system provides a 12 MHz or 48 MHz clock source for the built-in DPLL.

Application Specific Microcontrollers Part Context

The SL811HS series represents one of the first USB host/slave controllers designed specifically for embedded systems. The -JCT designation identifies the specific package configuration within the Cypress product line. This component simplifies USB integration by combining the serial interface engine and physical layer transceiver into a single chip.

Application Specific Microcontrollers Replacement Considerations

Direct replacements are limited due to the specific integration of the SIE and transceiver. Verify pin-to-pin compatibility if substituting with other Cypress USB controllers. Alternative solutions may require additional discrete components for signal conditioning or protocol handling.