On a single chip, the μPD720150 integrates communications functions that formerly required separate USB host and controller chips. As the newest product in the ECOUSBTM series, it delivers dramatically lower power consumption, both through the reduced device count and through advanced power management techniques.

The μPD720150 is an ideal solution for such USB-enabled systems. In addition to enabling high-speed data transfers at rates up to 480Mbps, it contributes to lower costs and space-efficient design by integrating host and peripheral control functions on a single chip, and supports rapid software development by hardware implementation of basic USB functions. The principal features of the μPD720150 are as follows.

1. Integrated host and peripheral control functions
   Register settings enable four different configuration patterns for the two USB ports, including one or two hosts, one peripheral, or one host and one peripheral. The chip supports simultaneous host and peripheral control, and the number of ports can be increased by connecting an external hub, which are also available from NEC Electronics.
2. Hardware implementation of basic USB operations
   The μPD720150 features on-chip hardware to handle basic USB operations, including many operations that formerly had to be handled in software. For example, audio and video data transfers can be scheduled automatically. By taking advantage of these on-chip functions, designers can provide USB features without increasing the software development burden.
3. General-purpose CPU bus interface
   The new chip integrates a 16-bit CPU interface with selectable timing modes. This allows direct connections to embedded system CPUs and eliminates the need for timing control device, for lower device counts and further savings in board space.
4. Low power consumption
   Technology developed for the ECOUSB™ series of low-power USB products enables lower power consumption at standby mode, for example by completely stopping the clock when USB functions are not in use, with the ability to activate the clock in response to an external signal event. The chip integrates a regulator to reduce internal voltage from 3.3 V to 1.5 V. This lowers operating power consumption without requiring additional devices.