User manual

Explorer 8 Development Board User’s Guide
DS40001812A-page 14  2015 Microchip Technology Inc.
4 J53, J55 Connects the microcontroller UART
RX pin to the MCP2221 TX pin.
E.g. RC7 is configured as the
microcontroller RX pin.
J54, J56 Connects the microcontroller UART
TX pin to the MCP2221 RX pin.
E.g. RC6 is configured as the
microcontroller TX pin.
MCU Interface to MCP23S17 I/O Expander
(1)
5 J60 Connects RB5 to the MCP23S17 I/O
Expander RESET pin.
J59 Connects RA2 to the MCP23S17 I/O
Expander Chip Select (CS) pin.
MCU Interface to the LEDs
(1)
6 J7 Connects LEDs D1 to D4 cathodes to
ground to provide a continuous LED
current path.
J21 Connects LEDs D5 to D8 cathodes to
ground to provide a continuous LED
current path.
MCU Interface to J32 mikroBUS™
(1)
7 J45 Connects the microcontroller SDO pin
to the J32 mikroBUS MOSI (SPI
Master Output Slave Input) pin.
E.g. RC5 is configured as the
microcontroller SDO pin.
J46 Connects the microcontroller SDI pin
to the J32 mikroBUS MISO (SPI
Master Input Slave Output) pin
E.g. RC4 is configured as the
microcontroller SDI pin.
J47 Connects the microcontroller SCK pin
to the J32 mikroBUS SCK (SPI Clock)
pin.
E.g. RC3 is configured as the
microcontroller SCK pin.
8 J27, J43 Connects the microcontroller RX pin to
the J32 mikroBUS UART RX pin.
E.g. RC7 is configured as the
microcontroller RX pin.
J34, J44 Connects the microcontroller TX pin to
the J32 mikroBUS UART TX pin.
E.g. RC6 is configured as the
microcontroller TX pin.
TABLE 1-1: ON-BOARD JUMPERS DESCRIPTION AND SAMPLE
CONFIGURATION (CONTINUED)
Label Jumper/s Description Configuration
RC7
RC5
RB5
J55
J53
RC6
RC4
RB7
J56
J54
LCD_RESET
J59
LED_D_EN
LED_B_EN
RC5
RD4
RD5
RC4
RD6
RC3
RC7
RG2
RB5
J27
J43
RC6
RG1
J34
J44
RB7