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Information as of 2000-01-10
 Latest information online
PDIUSBD12; USB interface device with parallel bus
| Description |  |
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The PDIUSBD12 is a cost and feature-optimized USB device. It is normally used in microcontroller-based systems and communicates with the system microcontroller over the high speed general-purpose parallel interface. It also supports local DMA transfer. This modular approach to implementing a USB interface allows the designer to choose the optimum system microcontroller from the available wide variety. This flexibility cuts down the development time, risks, and costs by allowing the use of the existing architecture and minimize firmware investments. This results in the fastest way to develop the most cost-effective USB peripheral solution. The PDIUSBD12 fully conforms to the USB specification Rev. 1.1. It is also designed to be compliant with most device class specifications: Imaging Class, Mass Storage Devices, Communication Devices, Printing Devices, and Human Interface Devices. As such, the PDIUSBD12 is ideally suited for many peripherals like Printer, Scanner, External Mass Storage (Zip Drive), Digital Still Camera, etc. It offers an immediate cost reduction for applications that currently use SCSI implementations. The PDIUSBD12 low suspend power consumption along with the LazyClock output allows for easy implementation of equipment that is compliant to the ACPI, OnNOW, and USB power management requirements. The low operating power allows the implementation of bus-powered peripherals. In addition, it also incorporates features like SoftConnectTM, GoodLinkTM, programmable clock output, low frequency crystal oscillator, and integration of termination resistors. All of these features contribute to significant cost savings in the system implementation and at the same time ease the implementation of advanced USB functionality into the peripherals.
| Features | |
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- Complies with the Universal Serial Bus specification Rev. 1.1
- High performance USB interface device with integrated SIE, FIFO memory, transceiver and voltage regulator
- Compliant with most Device Class specifications
- High-speed (2 Mbytes/s) parallel interface to any external microcontroller/microprocessor
- Fully autonomous DMA operation
- Integrated 320 bytes of multi-configuration FIFO memory
- Double buffering scheme for main endpoint increases throughput and eases real time data transfer
- 1MByte/s data transfer rate achievable in Bulk mode, 1Mbit/s data transfer rate achievable in Isochronous mode
- Bus-powered capability with very good EMI performance
- Controllable LazyClock output during suspend
- Software controllable connection to the USB bus (SoftConnectTM)
- Good USB connection indicator that blinks with traffic (GoodLinkTM)
- Programmable clock frequency output
- Complies with the ACPI, OnNOW, and USB power management requirements
- Internal power-on reset and low voltage reset circuit
- Available in SO28 and TSSOP28 pin packages
- Full industrial grade operation from -40 to +85°C
- Higher than 8kV in-circuit ESD protection lowers cost of extra components
- Full-scan design with high fault coverage (>99%) ensures high quality
- Operation with dual voltages: 3.3 ± 0.3V or extended 5V supply range of 3.6 - 5.5V
- Multiple interrupt modes to facilitate both bulk and isochronous transfers
| Datasheet | |
| Products, packages, availability and ordering | |
Please note, devices listed in the "Products, packages, availability and ordering" table marked with "WIT" are discontinued. Devices marked with "DOD" will be in the near future.
Contact your nearest sales or distributor office for the latest information on product status and availability.
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PDIUSBD12 links to the similar products page containing an overview of products that are similar in function or related to the part number(s) as listed on this page. The similar products page includes products from the same catalog tree(s) , relevant selection guides and products from the same functional category.
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