M68EVB912B32 반도체 회로 부품 판매점
Evaluation Board
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 Motorola Semiconductors |
Freescale Semiconductor, Inc.
Semiconductor Products Sector
M68EVB912B32/D
Rev. 1
M68EVB912B32 Evaluation Board
Overview
The M68EVB912B32 evaluation board (EVB) is an economical tool for
designing and debugging code for and evaluating the operation of the
MC68HC912B32 MCU. By providing the essential MCU timing and
input/output (I/O) circuitry, the EVB simplifies user evaluation of prototype
hardware and software.
The EVB features a prototype area, which allows custom interfacing with the
MCU’s I/O and bus lines. These connections are broken out via on-board
headers immediately adjacent to the MCU.
Figure 1 shows the EVB’s layout and locations of the major components as
viewed from the component side of the board.
RESET SWITCH
MC68HC912B32MCU
PROTOTYPE
AREA
RS-232C
DB-9
CONNECTOR
POWER
CONNECTOR
© Motorola, Inc., 1999
BACKGROUND
DEBUG MODE OUT
BACKGROUND
DEBUG MODE IN
VPP INPUT
Figure 1. Evaluation Board Layout
For More Information On This Product,
Go to: www.freescale.com
Freescale Semiconductor, Inc.
M68EVB912B32 Evaluation Board
Features
Components
• +4.5 to +5.5 Vdc operation
• RS-232C interface
• 32 Kbytes of MCU internal FLASH EEPROM with resident D-Bug12
monitor/debugger program
• Four operational modes:
– EVB
– Jump-to-EEPROM
– BDM pod (background debug mode)
– Bootload
• Header connectors for access to the MCU’s I/O and bus lines
• On-board prototype area for customized interfacing with the MCU
• Low-voltage inhibit protection
• Full support for either dumb terminal or host computer terminal interface
• IASM12 assembly language development toolkit
• File transfer capability from a host computer, allowing off-board code
generation
The EVB is composed of three components:
1. Hardware — The board is a 5.15-inch x 3.4-inch
(13.08-cm x 8.63-cm) multilayer printed circuit board (PCB) that
provides the platform for interface and power connections to the
MC68HC912B32 MCU. The MCU is surface mounted to the PCB.
2. Firmware — D-Bug12, the EVB’s firmware-resident monitor program,
provides a self-contained operating environment that allows writing,
evaluating, and debugging user programs.
The hardware is factory configured to execute D-Bug12 without further
configuration by the user. It is ready for writing and debugging user code
with an RS-232C terminal.
Commands are typed on the terminal’s D-Bug12 prompt line and
executed when the carriage return (ENTER) key is pressed. D-Bug12 then
displays either the appropriate response to the command or an error
indication.
3. Software — The ISAM12 assembly language toolset provides an
integrated development environment which includes a project manager,
relocatable macro-assembler, linker, librarian, Motorola S-record
generator, and a variety of other tools.
2
Features
MOTOROLA
For More Information On This Product,
Go to: www.freescale.com
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