Motorola M68EVB912B32, User Manual

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GENERAL INFORMATION
68EVB912B32UM/D 1-1
CHAPTER 1
GENERAL INFORMATION
1.1 INTRODUCTION
This manual provides the necessary information for using the M68EVB912B32 Evaluation
Board (the EVB), an evaluation, debugging, and code-generation tool for the MC68HC912B32
Microcontroller Unit (MCU) devices. The manual includes:
•
A general description of the EVB
•
Configuration and setup instructions
•
Startup and operating instructions
•
Detailed descriptions of the operating firmware’s command set
•
A detailed hardware-reference section
•
Appendices containing reference data
Additional reference items, such as schematic diagrams and parts lists, are shipped as part of the
EVB package.
1.2 GENERAL DESCRIPTION AND FEATURES
The EVB is an economical tool for designing and debugging code for, and evaluating the
operation of, the MC68HC192B32 MCU. By providing the essential MCU timing and I/O
circuitry, the EVB simplifies user evaluation of prototype hardware and software.
The board consists of a 5.15 by 3.4 inch (13.1 by 8.64 cm) double-sided printed circuit board
(PCB) that provides the platform for interface and power connections to the MC68HC912B32
MCU chip.
Figure 1-1 shows the EVB’s layout and locations of the major components, as viewed from the
component side of the board.
Hardware features of the low-cost EVB include:
•
Double-sided PCB
•
Single-3 to +5 Vdc power input (P5)
•
RS-232C interface
•
BDM IN and BDM OUT connectors for remote debugging of a user’s target system