Keil MCB251, User Manual

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MCB251 Evaluation Board User’s Guide 5
Configuring the MCB251
You configure the MCB251 evaluation board with the DIP switches and the
configuration jumpers. The MCB251 evaluation board is shipped with the
following configuration:
n
Intel 87C251SB or Temic 251G1 microcontroller,
n
Source Mode with 0 Wait States,
n
Non-Page Mode.
The default DIP switch settings are shown in the following table.
Switch Uart
Int
ext
Uart
SRC/
D2
Page Moni
tor
51/
151
MAP
1
MAP
2
LED A17
ON X X X X X X
OFF X X X X
The default settings of the configuration jumpers are shown in the following
figure. The NONP jumper selects the Non-Page Mode of the 251 CPU. The
INT1 and NMI jumpers are set to connect the Interrupt Button to the INT1
source.