Designer Reference Manual USB08 Evaluation Board
28 Hardware Description MOTOROLA
Hardware Description
Beyond that, the USB08 enables the implementation and testing of its
own M68HC08 software for evaluation purposes. For that purpose, the
board contains a monitor mode interface for reprogramming and
debugging. The monitor mode interface of the USB08 is compatible w ith
Motorola development tools such as the M68ICS08JB8 and other
third-party tools.
2.3 Technical Data
This subsection provides technical data for both the MC68HC908JB8
and the USB08 evaluation board.
2.3.1 MC68HC908JB8 Microcontroller
The main component of the USB08 evaluation board is the
MC68HC908JB8, a Motorola 8-bit MCU. Features of the
MC68HC908JB8 include:
Efficient M68HC08 MCU core
8 Kbytes of on-chip FLASH memory with security feature
256 bytes of random-access memory (RAM)
3-MHz bus clock (6-MHz quartz crystal)
2 × 16-bit timer with:
Input capture
Output compare
Pulse-width modulator (PWM)
Low-speed USB 1.1 interface module
Integrated 3-V voltage regulator
Computer operating properly (COP) watchdog timer
Low-voltage interrupt (LVI) reset controller
Inputs for RESET and IRQ pins
Up to 21 input/output (I/O) lines