The UPD72001C-11, manufactured by Renesas Electronics America, is a USB (Universal Serial Bus) host controller. This chip allows a system to function as a USB host, enabling it to interface and manage various USB devices like keyboards, mice, storage drives, and other peripherals. It complies with the USB 1.1 standard, providing connectivity for up to two USB ports. This IC is typically deployed in embedded systems, PCs, and diverse applications that necessitate USB host capabilities.

Applications

• Embedded systems requiring USB host functionality
• Legacy PC systems for adding USB support
• Industrial automation equipment
• Data logging and analysis systems
• Diagnostic tools and equipment

Features

• Compliant with USB Specification Revision 1.1
• Supports full-speed (12 Mbps) and low-speed (1.5 Mbps) data transfer rates
• Provides dual downstream USB ports
• Incorporates an integrated transaction translator (TT) for managing low-speed devices
• Compatible with bus-powered and self-powered USB devices
• Host controller interface is PCI bus compatible
• Offers interrupt and DMA support for efficient data transfer
• Low power consumption design
• Operates from a 3.3V power supply with 5V tolerant inputs for robust operation

Benefits

• Facilitates USB connectivity in systems lacking native USB support
• Simplifies the integration of USB peripherals into embedded system designs
• Streamlines the connection and management of multiple USB devices
• Provides a cost-effective solution for USB host capability implementation
• Minimizes system power consumption due to its low-power design
• Ensures compatibility with a broad spectrum of USB devices
• Optimizes data transfer with interrupt and DMA support

Additional Details

The UPD72001C-11 connects to the host system via a PCI interface for high-speed data exchange and efficient resource allocation. The built-in transaction translator manages low-speed USB devices correctly when the host controller operates at full speed. Its power management features make it suitable for battery-operated applications. The device is usually available in a PQFP (Plastic Quad Flat Package) for simplified surface mounting and PCB integration. External pull-up resistors might be necessary on USB data lines to meet USB specifications. Further details, including timing diagrams and example schematics, can be found in the Renesas datasheet for the UPD72001C series.