The ISP1181A is a Universal Serial Bus (USB) peripheral controller that complies with Universal Serial Bus Specification Rev. 2.0, supporting data transfer at full-speed (12 Mbit/s). It provides full-speed USB communication capacity to microcontroller or microprocessor-based systems. The ISP1181A communicates with the system’s microcontroller or microprocessor through a high-speed general-purpose parallel interface. The ISP1181A supports fully autonomous, multi-configurable Direct Memory Access (DMA) operation. The modular approach to implementing a USB peripheral controller allows the designer to select the optimum system microcontroller from the wide variety available. The ability to reuse existing architecture and firmware investments shortens development time, eliminates risks and reduces costs. The result is fast and efficient development of the most cost-effective USB peripheral solution. The ISP1181A is ideally suited for application in many personal computer peripherals such as printers, communication devices, scanners, external mass storage (Zip® drive) devices and digital still cameras. It offers an immediate cost reduction for applications that currently use SCSI implementations.
The ISP1181A is a full‑speed USB peripheral controller that provides 12 Mbit/s data transfer for microcontroller‑based systems. It features an integrated Serial Interface Engine, FIFO memory, on‑chip 3.3 V regulator, programmable clock output and autonomous DMA operation.
The device is suited for personal‑computer peripherals such as printers, scanners, digital cameras, mass‑storage (Zip) drives and communication equipment. It is offered in TSSOP48 and HVQFN48 packages and operates over a temperature range of –40 °C to +85 °C.
| Data transfer speed | 12 Mbit/s (full‑speed) |
|---|---|
| Programmable USB endpoints | Up to 14 |
| Internal FIFO memory | 2462 bytes |
| Operating temperature range | -40 °C to +85 °C |
| Supply voltage | 3.3 V to 5.0 V |
| Clock output frequency | up to 48 MHz |
| Crystal oscillator | 6 MHz |
| Package types | TSSOP48, HVQFN48 |
The ISP1181A supports full‑speed USB data transfer at 12 Mbit/s.
It provides up to 14 programmable USB endpoints.
The controller operates from a single supply of 3.3 V to 5.0 V.
The device is offered in TSSOP48 and HVQFN48 surface‑mount packages.