Figure 3-58. Disable Boot Schematic
1
4
2
3
TL3301NF260QG
SW4
VDD_3V3
GND
DIS_BOOT
DIS_BOOT
GND
2
1
4
3
G
R
EE
N
R
ED
0805
D8
1k
0402
5%
R229
1k
0402
5%
R230
GND
GND
DIS_BOOT
DIS_BOOT
LED_RED
LED_GREEN
LOW
HIGH
OFF
ON
ON
OFF
A
2
GND
3
Y 4
VCC 5
OE
1
74AHC1G126
U24
74HC1G126SE-7
0.1uF
10V
0402
C241
GND
OSPI0_CS_PB13
SDMMC0_CD_PA14
OSPI0_CS
GND
DIS_BOOT
VDD_3V3
1
2
HDR-2.54 Male 1x2
J22
VDD_3V3
100k
0402
5%
R231
100k
0402
5%
R236
3
1
2
BSS138N
Q8
3
1
2
BSS138N
Q9
3
1
2
BSS138N
Q10
Disable boot
JP3
10k
0402
1%
R241
Note:
The “Disable Boot” mechanism does not disable booting from SD Card connector J4. The user must remove
the SD Card to disable booting from it.
3.5.7
RGB LED
The SAMA7G54-EK board features one RGB (red, green, blue) LED. The three LED cathodes are controlled via one
standard GPIO and two GPIOs in PWM mode.
At Reset state, the blue and green LEDs are off; only the red LED is on, representing the "power on" status.
Figure 3-59. User RGB LEDs Schematic
LED_RED_PB8
VDD_3V3
2.2k
0402
1%
R224
GND
GND
100R
0402
5%
R228
GND
100R
0402
5%
R225
GND
GND
CLV1A-FKB-CK1VW1DE1BB7C3C3
D7
1k
0402
5%
R222
1k
0402
5%
R223
100R
0402
5%
R220
3
1
2
BSS138N
Q5
3
1
2
BSS138N
Q6
3
1
2
BSS138N
Q7
10k
0402
1%
R221
10k
0402
1%
R226
RGB LED
LED_BLUE_PD20
LED_GREEN_PA13
SAMA7G54-EK
Function Blocks
©
2022 Microchip Technology Inc.
and its subsidiaries
User Guide
DS50003273A-page 65