Microchip Technology dsPIC33CK User Manual page 16

dsPIC33CK Low-Voltage Motor Control Board User's Guide
2.2.2
A 5-pin header, J3, is a UART interface provided to connect an external UART-USB
converter or for accessing UART signals by disabling the MCP2200 device (see U13
in Figure
TABLE 2-4:
2.2.3
The Motor Control Board uses an on-board MCP2200 device (see U13 in
as a bridge between the UART and USB (see
interface.
TABLE 2-5:
2.2.4
Hall sensors are used to detect the rotor position and speed of the motor. Connector
J7 can be used to interface the Hall sensor outputs with the Motor Control Board,
enabling sensor-based BLDC motor control applications.
descriptions of connector J7. The connector provides two supply outputs, +5V and
+3.3V, which can be used as input supplies of the Hall sensors based on the sensor
specification.
TABLE 2-6:
DS50002927A-page 16
UART Interface Header (J3)
A-5). Table 2-4 summarizes the pin functions of connector J3.
PIN DESCRIPTION – CONNECTOR J3
Pin # Signal Name
1 +3.3V
2 DEBUG_TX
3 DEBUG_RX
4 DGND
5 MCP2200_RST
USB Serial Interface (J6)
PIN DESCRIPTION – CONNECTOR J6
Pin # Signal Name
0 No Connection
1 5V_USB
2 UART_USB_N
3 UART_USB_P
4 No Connection
5 GND
Hall Sensor Interface Connector (J7)
PIN DESCRIPTION – CONNECTOR J7
Pin # Signal Name
1 +5V
2 +3.3V
3 DGND
4 HA
5 HB
6 HC
Pin Description
+3.3V Supply
UART Transmit Pin of dsPIC
UART Receive Pin of dsPIC DSC
Digital Ground
Setting this Pin Low (connecting to Ground) will
Disable the MCP2200 (U13)
Table 2-5) for providing the host PC
Pin Description
Body is Connected to Digital Ground
USB +5 V
DC
USB Data-
USB Data+
—
Digital Ground
Table 2-6
Pin Description
+5V Supply to Hall Sensors
+3.3V Supply to Hall Sensors
Digital Ground
Hall Sensor A Feedback from the Motor
Hall Sensor B Feedback from the Motor
Hall Sensor C Feedback from the Motor
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®
DSC
Figure A-5)
shows the pin