limited to a maximum of 500 mA, therefore the MIC2025 limits the current and indicates an overcurrent with the
USBC_OVCUR_PC17 signal.
Figure 3-38. USBC Port Power Switch Schematic
EN
1
FLG 2
GND
3
NC
4
NC 5
OUT 6
IN
7
OUT 8
USB Power Switch
MIC2025-1YM
U18
USBC_VBUS_5V
USBC_EN_5V_PC6
5V_MAIN
VDD_3V3
GND
GND
10uF
25V
1206
C209
10uF
25V
1206
C213
10k
0402
1%
R195
10k
0402
1%
R196
0.1uF
10V
0402
C214
GND
100uF
10V
1210
C212
22uF
10V
1206
C211
0.1uF
10V
0402
C210
120R
BLM18PG121SN1D
FB13
USBC_OVCUR_PC17
Table 3-29. USBC Power Switch PIO Signal Descriptions
PIO
Signal Name
Shared
Signal Description
PC6
USBC_EN_5V_PC6
–
Power switch enable (active high)
PC17
USBC_OVCUR_PC17
–
Indicates overcurrent (open drain)
3.4.3
Dual mikroBUS Click Interfaces
The SAMA7G54-EK hosts two pairs of 8-pin female headers (J10 and J12) implementing the official mikroBUS
socket. For details, refer to the mikroBUS documentation on
.
3.4.3.1
mikroBUS 1 Connector
The first mikroBUS 8-pin female header (J10) implements all mikroBUS features as described in the schematic
below.
The reset feature is ensured (by default) by the processor reset line and can be controlled by the general reset line by
swapping R198 and R199.
Figure 3-39. mikroBUS 1 Interface
mikroBUS connectors
AD14
FLEXCOM11_IO3
GND
GND
mikroBUS1
5V_MAIN
VDD_3V3
0R
0603
R197
MIKROE-4247
AN
1
RST
2
CS
3
SCK
4
MISO
5
MOSI
6
3.3V
7
GND
8
PWM 16
INT 15
RX 14
TX 13
SCL 12
SDA 11
5V 10
GND 9
J10
MIKROBUS1_AN_PD0
MIKROBUS1_CS_PB6
MIKROBUS1_SCK_PB5
MIKROBUS1_MISO_PB4
MIKROBUS1_MOSI_PB3
MIKROBUS1_TX_PD18
MIKROBUS1_RX_PD19
MIKROBUS1_INT_PC21
FLEXCOM11_IO2
FLEXCOM11_IO1
FLEXCOM11_IO0
FLEXCOM4_IO1
FLEXCOM4_IO0
FLEXCOM9_IO1
FLEXCOM9_IO0
(5V0)
MIKROBUS1_PWM_PA13
MIKROBUS1_TWD_PC18
MIKROBUS1_TWCK_PC19
nRST_MBUS
0R
0603
R198
0R
0603
R199
nRST_MBUS
nRST
nRST_OUT
The first mikroBUS interface features an SPI bus shared with the second mikroBUS interface. Each interface has its
own Chip Select line to its SPI interface (PB6 for the mikroBUS1 interface). I/Os in common are PB3, PB4 and PB5.
That means that the SPI interface cannot be used at the same time on the two mikroBUS interfaces.
SAMA7G54-EK
Function Blocks
©
2022 Microchip Technology Inc.
and its subsidiaries
User Guide
DS50003273A-page 47