The SL811ST1.5 is a USB host controller manufactured by Cypress Semiconductor Corp. This controller allows embedded systems to act as USB hosts, enabling them to communicate with USB peripherals such as keyboards, mice, and storage devices. The SL811ST1.5 simplifies USB integration by handling the complexities of the USB protocol. It supports low-speed (1.5 Mbps) USB devices.

Applications

• Embedded systems requiring USB host functionality
• Industrial control systems
• Point-of-sale (POS) terminals
• Medical devices
• Data acquisition systems
• Legacy peripheral upgrades to USB

Features

• USB Specification 1.1 compliant host controller
• Supports low-speed (1.5 Mbps) USB devices
• Integrated Serial Interface Engine (SIE)
• Integrated transceiver
• Supports up to 16 endpoints
• Operates from a single 3.3V supply
• Available in a compact TQFP package
• Host mode only operation
• Integrated pull-up resistors for USB data lines

Benefits

• Simplified USB host implementation: The integrated SIE and transceiver minimize the need for external components, easing design and reducing space.
• Improved system performance: USB protocol handling offloaded from the host processor boosts overall performance.
• Reduced power consumption: Low-power design increases battery life for portable applications.
• Cost-effective solution: Integration of key USB host functions decreases the total system cost.
• Faster time to market: Ease of use allows developers to quickly integrate USB host features into products.
• Interface with low-speed devices: Supports low-speed USB devices like mice and keyboards.

Technical Specifications

The SL811ST1.5 requires a 3.3V power supply. It contains an integrated Serial Interface Engine (SIE) and a USB transceiver. It supports up to 16 endpoints and is packaged in a TQFP. It communicates with the host processor via a serial interface. The operating temperature is usually -40°C to +85°C. The primary difference between this part and the SL811HST14 is the supported USB speed; this one only supports low speed.