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Microcontroller Selection

The MCBx51 board operates with various microcontroller types. The following tables give an overview of the DIP switch settings for the various devices.

Note

  • The settings in the following tables are only relevant if you work with the Monitor EPROM (Monitor DIP switch ON). When the Monitor DIP switch is OFF, then you may select the Memory Mapping and microcontroller type with the MAP0 and MAP1 DIP switches.

251 Devices
51/151 DIP Switch is OFF

MCU Type
and Operating Mode
DIP Switch Setting Config Bytes
Src/D2 Page Map0 Map1 A17 Cfg0 Cfg1
251SB/TB, 251G1D/G2D
Page Mode, Source Mode
ON ON OFF OFF ON 0F1h 097h
251SB/TB, 251G1D/G2D
Page Mode, Binary Mode
OFF ON OFF OFF ON 0F0h 097h
251SB/TB, 251G1D/G2D
Non-page Mode, Source Mode
ON OFF OFF OFF ON 0F3h 097h
251SB, 251G1 or 251A1
Non-page Mode, Binary Mode
OFF OFF OFF OFF ON 0F2h 097h
This table lists the 251 MCU configuration byte values used by the Monitor.
For more information, refer to the 251 data sheets.

8051/151 Devices
51/151 DIP Switch is ON

MCU Type
and Operating Mode
DIP Switch Setting
Src/D2 Page Map0 Map1 A17
Intel 151, Page Mode ON ON ON ON OFF
Intel 151, Non-page Mode OFF OFF ON ON OFF
Classic 8051 (80C32, 80C51FC, ect.) OFF OFF ON ON OFF
Dallas 320/420/520 ON OFF ON ON OFF
Atmel 8xC51Rx2, NXP 8xC51Rx+/RxD OFF ON ON ON OFF
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