Table 3-31. mikroBUS 2 Connector J12 Pin Assignment
Function
PIO
Mbus Signal Pin No. Pin No. Mbus Signal PIO
Function
Analog input
PD1
AN
1
16
PWM
PD20 PWM
Reset
nRST_MBUS RST
2
15
INT
PC20 Interrupt
SPI Chip Select PB7
SPI_NPCS
3
14
UART_RX
PC24 UART receive (Mbus
output to SAM)
SPI clock
PB5
SPI_SPCK
4
13
UART_TX
PC23 UART transmit (Mbus
input from SAM)
SPI MOSI
PB4
SPI_PISO
5
12
TWI_SCL
PC19 TWI clock
SPI MISO
PB3
SPI_MOSI
6
11
TWI_SDA
PC18 TWI data
VCC
--
3.3V supply
7
10
5V supply
–
VDD
GROUND
--
GND
8
9
GND
–
Ground
3.4.4
Dual CAN Interfaces
The SAMA7G54-EK features two MCP2542FD transceivers.
The MCP2542FD is a high-speed CAN transceiver that provides the interface between the Controller Area Network
(CAN) protocol controller and the physical two-wire bus. For more information about the MCP2542FD, refer to the
product
.
Figure 3-41. Dual CAN Interfaces
15pF
50V
0402
C227
5V_MAIN
VDD_3V3
0402
R213
GND
GND
GND
GND
15pF
50V
0402
C231
5V_MAIN
VDD_3V3
0402
R216
GND
GND
GND
GND
62R
1210
5%
R212
62R
1210
5%
R214
1
2
3
4
5
TERMINAL 1x5
J17
4700pF
50V
0402
C224
GND
62R
1210
5%
R215
62R
1210
5%
R217
4700pF
50V
0402
C228
GND
GND
CAN0_H
CAN0_L
CAN1_L
CAN1_H
CAN0_STBY_PC15
RXD
4 TXD
1
VSS 2
VDD
3
VIO
5
CANL 6
CANH 7
STBY
8
EP 9
MCP2542
U21
RXD
4 TXD
1
VSS 2
VDD
3
VIO
5
CANL 6
CANH 7
STBY
8
EP 9
MCP2542
U22
0.1uF
10V
0402
C225
0.1uF
10V
0402
C226
0.1uF
10V
0402
C229
0.1uF
10V
0402
C230
CANTX0_PD12
CANRX0_PD13
CANTX1_PD14
CANRX1_PD15
Dual CAN
CAN1_STBY_PC16
Table 3-32. CAN Signal Descriptions
PIO
Signal Name
Shared
Signal Description
PD12
CANTX0_PD12
–
CAN transmit port 0
PD13
CANRX_PD13
–
CAN receive port 0
PC15
CAN0_STBY_PC15
–
CAN standby port 0
PD14
CANTX1_PD14
–
CAN transmit port 1
PD15
CANRX1_PD15
–
CAN receive port 1
SAMA7G54-EK
Function Blocks
©
2022 Microchip Technology Inc.
and its subsidiaries
User Guide
DS50003273A-page 49