36
UNI-DS3 Development System
MikroElektronika
page
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The MCU card is provided with the LPC2148 microcontroller in LQFP64 package. In addition to this microcontroller, the MCU card is
also supplied with a battery used to power the microcontroller when the power supply is off. The LPC2148 microcontroller requires 3.3V
generated by the REG1 voltage regulator. In addition to the built-in programmer
ARMprog
, the microcontroller can be programmed by
means of the external JTAG programmer as well. To enable the
ARMprog
programmer to operate properly, it is necessary to install
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relevant manual and install driver for the
ARMprog
programmer from the product CD. To enable a .hex code to be loaded into an ARM
microcontroller, it is necessary to install the
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program providing an interface between the microcontroller and a PC.
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: MCU card with an ARM microcontroller
When the external programmer is used, jumpers
J1-J7 should be placed in the JTAG position
Built-in
ARMprog
programmer
Microcontroller in
LQFP64
package
The male CN2 connector is used to connect the external JTAG programmer. In case the external programmer is used, it is necessary
to place jumpers J1-J7 in the JTAG position.
In case the USB communication is used via the CN21 connector provided on the development system, jumper J10 should be placed
in the VBUS position, thus connecting the MCU-0.23 microcontroller pin to the MCU-VBUS pin on the DIMM-168p socket. In case the
USB communication is not used, jumper J10 should be placed in the BOARD position. In this case the MCU-0.23 microcontroller pin
gets connected to the P0.23 pin on the DIMM-168p socket.
The function of the LED diode marked as UP_LED is to detect and signal external USB device connected to the microcontroller via the
CN21 connector for USB communication. To enable the UP_LED diode to perform its signal function, it is necessary to place jumpers
J8 and J9 in the UP_LED position. When jumpers J8 and J9 are placed in the CONNECT position, the powering of the external USB
device is controlled from within the software.
