dsPICDEM? MC1 Motor Control Development Board
1.2
ABOUT THE SYSTEM
1.2.1
Introduction
This chapter describes the features of the system.
1.2.2
Processor
The system has the dsPIC30F6010 80-pin TQFP part fitted as standard (U4).
An array of pins around the device allows the appropriate MPLAB ICE device adapter
to plug directly into the board without the need for the transition socket.
1.2.3
Power Supply
The main supply input to the system is via J2. Any power supply with a 2.1 mm plug
capable of delivering 9V, up to 1A with an unregulated AC or DC output, may be used.
After rectification and filtering, the digital +5V is created by U1, a 1A 2% tolerance linear
regulator. The tighter than standard tolerance is used to ensure correct optoisolator
drive and FAULT trip levels when using one of the power modules. The digital +5V is
available in the prototyping area (V DD ) as well as on several of the interface
connectors.
A low current analog supply (AV DD ) is created from the digital supply via a passive RC
filter. This is used for the ADC in the dsPIC ? device and for the analog feedback signals
via J1. It is also available in the prototyping area.
1.2.4
In-Circuit Debugging and In-Circuit Serial Programming?
(ICSP?)
In-circuit debugging and serial programming of the FLASH memory contained within
the dsPIC device is supported via J4. This allows direct connection to the MPLAB ?
ICD 2 or the PRO MATE ? II via the appropriate ICSP module.
The default pins used for dsPIC emulator communication and device programming are
AN1 and AN0. In order to maximize the number of ADC channels for use in motor
control, provision has been made to switch the emulator and programming pins to the
alternative pins of 59 and 60. These pins are shared with the low power secondary
oscillator module that is not used in the design. Switching between the two sets of pro-
gramming pins should be done using S2 and the appropriate configuration bit settings
within the MPLAB environment. See the MPLAB IDE User's Guide (DS51025) for
details.
When S2 is switched to the ‘ICD’ position, the analog feedback signals are discon-
nected from the AN0 and AN1 pins. The programming lines on J4 are connected. When
S2 is switched to the ‘Analog’ position, the programming lines are disconnected and
the analog signals are connected to AN0 and AN1.
DS70098A-page 6
? 2003 Microchip Technology Inc.
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