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INTRODUCTION TO THE M5206eLITE BOARD
1.1
INTRODUCTION
The M5206eLITE is a versatile single board computer based on MCF5206e ColdFire® Processor. It may be used
as a powerful microprocessor based controller in a variety of applications. With the addition of a terminal, it
serves as a complete microcomputer system for development/evaluation, training and educational use. To have a
fully functional system, all that is required is an RS-232 terminal (or a PC with terminal emulation software) and
a regulated 5V power supply.
It is possible to expand the memory and I/O capabilities of this board by connecting additional hardware via the
Microprocessor Expansion Bus connectors, although it may be necessary to add bus buffers to accomodate additional
bus loading.
Furthermore, provisions have been made on the printed circuit board (PCB) to permit configuration of the board
in a way which best suits an application. Options available are: up to 32M bytes of ADRAM (FPM or EDO – not
fitted), 1M byte (256Kx32) FSRAM, Timers, general purpose I/O, an MBus(I
2
C) slave device (real-time clock)
and 1M byte (512Kx16) of Flash EEPROM. All of the processor’s signals are also available via connectors J1 and
J2 for expansion purposes.
1.2
GENERAL HARDWARE DESCRIPTION
The M5206eLITE board provides FSRAM, Flash ROM, RS232 and all the built-in I/O functions of the MCF5206e
for learning and evaluating the attributes of the MCF5206e. The MCF5206e is a member of the ColdFire® family
of processors. It is a 32-bit processor with up to 32 bits of addressing and 32 lines of data. The processor has eight
32-bit data registers, eight 32-bit address registers, a 32-bit program counter and a 16-bit status register.
The MCF5206e has a System Integration Module referred to as SIM. The module incorporates many of the
functions needed for system design. These include programmable chip-select logic, system protection logic,
general purpose I/O and interrupt controller logic. The chip-select logic can select up to eight memory banks or
peripherals in addition to two banks of ADRAMs. The chip-select logic also allows a programmable number of
wait-states to allow the use of slower access memory (refer to MCF5206e User’s Manual by Motorola for detailed
information about configuration of the SIM - system integration module.) The M5206eLITE board only uses
three of the available chip selects to access the Flash EEPROM, FSRAM and the extra GPIO. The on-chip
ADRAM controller can be used to control one ADRAM SIMM module of up to 32M bytes of ADRAM (the
ADRAM SIMM is not fitted to the board, but can easily be added by the user), both -RAS lines and all four –CAS
lines are used. All other functions of the SIM are available to the user.
A hardware watchdog timer (Bus Monitor) circuit is included in the SIM that monitors the bus activities. If a
bus cycle is not terminated within a programmable time, the watchdog timer will assert an internal transfer
error signal to terminate the bus cycle. A block diagram of the board is shown in Figure 1.
Figure 1 Block Diagram of the board
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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