GENEVA -- STMicroelectronics today announced that it has enlarged both its ST9 and ST7 lines of 8-bit microcontrollers with new families that carry an integrated Universal Serial Bus (USB) interface.
The ST92163 and ST7263 families expand the choices that embedded system designers have for cutting the cost and time-to-market of products that carry the increasingly popular USBinterface. In addition to complying with the USB 1.1 specification, the interface includes a 3.3-volt software-controlled voltage regulator, USB transceivers, and a serial interface engine with a direct memory access (DMA) controller.
The ST92163 contains a full-speed (12 megabits per second) USB interface with up to 8 functions and 16 end points, including fully programmable buffer size and transfer direction. The USB interface can handle isochronous, bulk, interrupt, and control data types. Moreover, the on-chip DMA controller can transfer data between the USB end point buffer and a serial or parallel communication interfaces.
Also embedded are 20-Kbyte program memory, 2-Kbyte RAM, 256-byte register file, a 3-Mbit/sec. synchronous and asynchronous interface and an 8-bit analog to digital convertor. A novel feature of the ST92163 family is its dual-voltage operation, which allows an MCU to run from 5-V when connected to a PC, but drops to 3-V for portable operation.
With these features, the ST92163 is suitable for portable MP3 and other digital audio players and, more generally, on peripherals, such as Flash card readers and programers using the mass storage USB device class; and also fingerprint and smart card readers, protocol translators (such as a USB to fast synchronous serial interface) and other devices.
For applications requiring low-speed USB, the ST7263 family of MCUs offer an enhanced USB interface having three end points and fully programmable buffer size and transfer direction. Available with 4 to 16 kbytes of ROM or one-time programmable (OTP) memory, the ST7263 family also includes an 8-bit A/D converter. Typical uses include gamepad, joystick, mouse and touch screen applications, or as an RS232-to-USB or I2C-to-USB translator in a wide variety of applications.
The ST7263 family is available now, in SO34 and SDIP 32 packages as well as in die form. The Flash version is planned for late 2000. Members of ST92163 family are available now in OTP version, with ROM being planned for mid-2000. Pricing information was not available.