Austin, TX--April 22, 1997--Motorola's Customer Specified Integrated Circuits (CSIC) Consumer & Smartcard Division (Austin, TX) announced the immediate availability of the first of a family of Universal Serial Bus (USB) 8-bit microcontrollers. The 68HC705JB2 and 68HC05JB2 are solutions for low-speed USB computer mouse applications. These devices join the 68HC05 family of microcontrollers.
The 68HC(7)05JB2 has an on-chip memory of 2048 bytes of user ROM (or EPROM) and 128 bytes of user RAM. The device also offers 16-bit input capture/output compare timers, and is designed to be fully compliant with low-speed USB with three endpoints. Other features include ten bi-directional I/O pins, low voltage reset (LVR) circuit, a 3.3V+/-10 percent DC voltage for USB pull-up resistor, and hardware mask and flag for external interrupts. It also provides fully static operation with no minimum clock speed, multifunction timer, power-saving STOP and WAIT modes, illegal address reset, 8 by 8 unsigned multiply instruction, a 20-pin plastic dual in-line package (PDIP), and 20-pin surface mount small outline package (SOIC).
Mask options for the 68HC05JB2 include external interrupt pins--edge-triggered or edge- and level-triggered; Port A and Port B pull-down and pull-up resistors--connected or disconnected; port A PA0-PA3 external interrupt capability--enabled or disabled; OSC--crystal/ceramic resonator startup delay; crystal/resonator feedback resistor--connected or disconnected; and LVR--enabled or disabled.
The 68HC705JB2 (EPROM) with voltage regulator is available now and has a Motorola suggested list price of $3.50 for pilot production volumes. The ROM-based 68HC05JB2 has a Motorola suggested list price targeted at $1.40 in high volume.
A comprehensive line of development tools is available for the 68HC(7)05JB2, including the Motorola Modular Development System (MMDS), the Motorola Modular Evaluation System (MMEVS), as well as a programmer. A USB device firmware library supporting the 68HC(7)05JB2 for all low-speed USB HID applications is being planned. Prototype code is currently available for preliminary application code development with a production date targeted for the third quarter of 1997. Motorola intends to port this library to each successive device in their USB family, with functionality expanded to cover future device classes. Additionally, a line of tool support is available from third-party developers.
Motorola MCU Information Line
P.O. Box 52073, M/D 56-102
Phoenix, AZ 85072
(800) 765-7795 ext. 887
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