Assembly of the AVR200 is quite straightforward as the PC board
is a plated-through, double-sided design with solder resist on both sides. To
reduce component count and simplify construction, most resistors are contained
in single-in-line (SIL) arrays.
In its standard configuration, the board provides eight analog
inputs or digital inputs/outputs, 11 digital inputs and nine Mosfet outputs.
Also included are a real-time clock, buffered I2C port and RS232
serial port.
If the standard port I/O arrangements are not suitable for your
application, then most port lines can be swapped from inputs to outputs or vice
versa with only minor component changes. It is therefore important to examine
the various options carefully before starting assembly, to ensure that the
correct parts are installed from the outset.
We covered the various options in detail last month. In
summary, the kit contains all of the components needed to configure all
available port lines (28) as inputs, if desired. Eight of these can be either
analog or digital inputs, with the remainder being digital only.
Note that the remaining four port bits of the ATmega32 are
dedicated to the I2C and RS232 serial interfaces.
Conversely, if more than the standard nine port lines are
required as outputs, then up to 12 additional Mosfets can be installed for a
full complement of 21 outputs (still giving seven digital inputs). The extra
Mosfets are not included in the basic kit but can be ordered separately from
JED.
