The UPD72001C, manufactured by Renesas Electronics America, is a USB (Universal Serial Bus) host controller. This chip enables a system to act as a host, allowing it to manage and communicate with various USB devices such as keyboards, mice, storage devices, and other peripherals. It implements the USB 1.1 standard and provides connectivity for up to two USB ports. The UPD72001C is designed for embedded systems, PCs, and other applications requiring USB host functionality.

Applications

• Embedded systems requiring USB host connectivity
• Legacy PC systems adding USB support
• Industrial control systems
• Data acquisition systems
• Test and measurement equipment

Features

• Compliant with USB Specification Revision 1.1
• Supports both full-speed (12 Mbps) and low-speed (1.5 Mbps) data transfer rates
• Provides two downstream USB ports
• Integrated transaction translator (TT) for handling low-speed devices
• Supports both bus-powered and self-powered USB devices
• Host controller interface compatible with PCI bus
• Includes interrupt and DMA support for efficient data transfer
• Low power consumption
• Operates from a 3.3V power supply with 5V tolerant inputs

Benefits

• Enables USB connectivity in systems lacking native USB support
• Allows easy integration of USB peripherals into embedded designs
• Simplifies the connection and management of multiple USB devices
• Provides a cost-effective solution for adding USB host functionality
• Reduces system power consumption with its low-power design
• Ensures compatibility with a wide range of USB devices
• Streamlines data transfer with interrupt and DMA support

Additional Details

The UPD72001C connects to the host system via a PCI interface, allowing for high-speed data transfer and efficient resource management. It includes an integrated transaction translator, which is essential for correctly handling low-speed USB devices when the host controller is operating at full speed. The chip's power management features also contribute to its suitability for battery-powered applications. The device typically comes in a PQFP (Plastic Quad Flat Package) for easy surface mounting and integration into printed circuit boards. External pull-up resistors may be required on the USB data lines to comply with the USB specification. Further details, including timing diagrams and application schematics, are available in the Renesas datasheet for the UPD72001C.