Microchip Technology SAMA7G54-EK User manual

SAMA7G54-EK
SAMA7G54-EK User's Guide
Scope
This user's guide provides detailed information on the overall design of the SAMA7G54 Evaluation Kit (SAMA7G54-
EK) and describes how to use the kit.
The kit is the evaluation platform for the SAMA7G5 Series devices.
Figure 1. SAMA7G54-EK Overview
© 2022 Microchip Technology Inc.
and its subsidiaries
User Guide DS50003273A-page 1

1. Introduction
1.1 Document Layout
The document is organized as follows:
• Introduction
• Product Overview—Important information about the evaluation kit
• Function Blocks—Evaluation kit specification and high-level description of the major components and interfaces
• Installation and Operation—How to get started with the evaluation kit
• Appendix A: Schematics and Layout—Evaluation kit schematics and layout diagrams
• Appendix B: Unmounted Elements—List of unmounted components, description of their use in the system and
guidance for manually assembling the Wi-Fi®/Bluetooth® module
1.2 Reference Documents
The following Microchip document are available and recommended as supplemental reference resources.
Table 1-1. Reference Documents
Document Title Document Type Literature No.
SAMA7G5 Series Data sheet DS60001765
MCP16502 Data sheet DS20006275
24AA025E48 Data sheet DS20002124
KSZ8081RNA/RND Data sheet DS00002199
KSZ9131RNX Data sheet DS00002841
MCP2542FD Data sheet DS20005514
ATWILC3000-MR110xA Data sheet DS70005327
ATECC608B Data sheet DS40002239
PAC1934 Data sheet DS20005850
How to Manually Solder the ATWILC3000 Module on an MPU Board Application note AN3227
SAMA7G54-EK
Introduction
© 2022 Microchip Technology Inc.
and its subsidiaries
User Guide DS50003273A-page 2

2. Product Overview
The SAMA7G54 Evaluation Kit (SAMA7G54-EK) provides a versatile Total System Solution platform that highlights
Microchip MPU and connectivity ICs.
The board features on-board memories, two Ethernet interfaces, three USB ports, two CAN interfaces, one SD card
connector, two mikroBUS™ click interface headers to support over 450 MikroElektronika Click boards™, an RPi CSI
camera to support a camera module, an RPi extension connector to support several extension boards, and provision
to solder a Microchip ATWILC3000-MR110xA Wi-Fi/Bluetooth module.
Note: RPi stands for “Raspberry Pi”. Raspberry Pi is a trademark of Raspberry Pi Trading.
2.1 SAMA7G54-EK Features
Table 2-1. SAMA7G54-EK Features
Characteristic Specifications Components
Processor 14x14 mm, 0.65 mm pitch, 343-ball
TFBGA Microchip SAMA7G54-V/4HB
External clock
MPU: 24 MHz
MPU: 32.768 kHz Crystal
Ethernet: 25 MHz
Microchip DSC1001DI5-024.0000
NDK NX2012SA-32.768-STD-MUB-1
2 * Microchip DSC1001DI5-025.0000
Memory
One 16-bit, 4-Gbit DDR3L
One 32-Gbit e.MMC
One 1-Gbit Octal SPI Flash
Two EEPROMs with EUI-48™ MAC ID
Alliance Memory AS4C256M16D3LC-12BCNTR
SkyHigh Memory S40FC004C1B1C00000
Micron MX66LM1G45GXDI00
2 * Microchip 24AA02E48
SD/MMC One standard 4-bit SD Card interface
with power control Microchip MIC9085
USB
One Micro-AB host/device with power
switch
One Type-A host with power switch
One Type-C™ host with power switch
3 * Microchip MIC2025
CAN Two CAN interfaces Microchip MCP2542FD
Ethernet
One Ethernet 10/100 port
One Gigabit Ethernet port
Microchip KSZ8081
Microchip KSZ9131
Wi-Fi/BT One optional Wi-Fi/BT interface Slot for Microchip ATWILC3000
Audio
One SPDIF RX port
One SPDIF TX port
Four digital microphones
–
–
SPK0641HT4H-1
Camera One RPi CSI camera interface –
Debug port
One J-Link-OB + CDC
One JTAG interface
Embedded J-Link-OB through the CDC
(Communication Device Class) interface
(ATSAM3U4C TFBGA100)
SAMA7G54-EK
Product Overview
© 2022 Microchip Technology Inc.
and its subsidiaries
User Guide DS50003273A-page 3

...........continued
Characteristic Specifications Components
Board monitor
One RGB (red, green, blue) LED
Four push button switches
–
–
Expansion
One RPi Expansion connector
Two mikroBUS connectors
–
Hundreds of possible click extensions featuring
Microchip functions
Power
management
One power management IC
One power consumption measurement
device
Microchip MCP16502
Microchip PAC1934
Board supply From USBA or from wall adapter –
Backup battery SuperCap –
2.2 SAMA7G54-EK Content
The SAMA7G54 evaluation kit includes the following:
• The SAMA7G54-EK board
• Two USB-A to USB Micro-AB cables
2.3 Evaluation Kit Specifications
Table 2-2. Evaluation Kit Specifications
Characteristic Specifications
Board SAMA7G54-EK
Board supply voltage External or USB-powered
Temperature
Operating: 0°C to +70°C
Storage: -20°C to +70°C
Relative humidity 0 to 85% (non-condensing)
Board dimensions 160 x 100 mm
RoHS status Compliant
2.4 Power Sources
Two options are available to power up the SAMA7G54-EK board:
• Through an external AC to DC +5V wall adapter connector (J1)
• Through the USB Micro-AB connector on the USBA port (J7)
Table 2-3. Electrical Characteristics
Electrical Parameter Value
Input voltage 5 VDC
Maximum input voltage 6 VDC
SAMA7G54-EK
Product Overview
© 2022 Microchip Technology Inc.
and its subsidiaries
User Guide DS50003273A-page 4

...........continued
Electrical Parameter Value
Maximum 3.3 VDC current 300 mA
CAUTION
The SAMA7G54-EK board runs at a 3.3V voltage level logic. The maximum voltage that the I/O pins can
tolerate is 3.3V. Providing higher voltages (e.g. 5V) to an I/O pin could damage the board.
2.5 On-Board Connectors
The fully-featured SAMA7G54 Evaluation Kit integrates multiple peripherals and interface connectors, as shown in
the following figure.
Figure 2-1. SAMA7G54-EK Connectors
J-Link-OB
Micro-AB
JTAG 20-pin
IDC Connector 3 x User Buttons MIPI CSI Camera
Connector
Disable
Boot
Button
UART DEBUG
External
Power
Jack
2 x CAN
Connector
USB 2.0
Micro-AB
USB Host
Type-C
USB Host
Type-A
SD Card
Connector
Footprint to
solder the
WiFi/BT
Module
WiFi/BT
Debug
Connector
SPDIF
RX
Connector
SPDIF
TX
Connector
Ethernet
10/100
Gigabit
Ethernet
Disable
Boot
Jumper
mikroBUS
Connector
Raspberry Pi
Connector
mikroBUS
Connector
WiFi/BT
Table 2-4. SAMA7G54-EK Board Interface Connectors
Connector Interfaces To
J1 External power jack
J4 Standard SDMMC connector
J5 Gigabit Ethernet RJ45
J6 Ethernet 10/100 RJ45
SAMA7G54-EK
Product Overview
© 2022 Microchip Technology Inc.
and its subsidiaries
User Guide DS50003273A-page 5

...........continued
Connector Interfaces To
J7 USB 2.0 Micro-AB (USB-A)
J8 USB 2.0 Type-C (USB-B)
J9 USB 2.0 Type-A (USB-C)
J10 mikroBUS socket (mBUS1)
J11 MIPI CSI camera connector
J12 mikroBUS socket (mBUS2)
J13 40-pin Raspberry Pi connector
J14 Tamper pins connector
J15 ATWILC3000 debug connector
J16 ATWILC3000 UART debug connector
J17 Dual CAN connector
J18 SPDIF RX connector
J19 SPDIF TX connector
J20 UART debug connector (FTDI connector)
J22 Disable boot jumper
J23 PCB connector for factory-programming the SAM3U/J-Link-OB (not to be used by end user)
J24 J-Link-OB USB connection
J27 JTAG, 20-pin IDC
2.6 Default Jumper Settings
The following picture shows the default jumper settings. Jumpers in blue are in open position, jumpers in red are in
closed position.
SAMA7G54-EK
Product Overview
© 2022 Microchip Technology Inc.
and its subsidiaries
User Guide DS50003273A-page 6

Figure 2-2. SAMA7G54-EK Default Jumper Settings
Table 2-5. SAMA7G54-EK Jumper Settings
Jumper State Function
J2 Closed VDDBU current measurement
J3
Open (default) RMII Ethernet interface is selected.
Closed The 4-microphone PDMIC interface is selected.
J22
Open (default) Booting from on-board memory is permanently allowed and only disabled during SW4
pressure.
Closed Booting from on-board memory is permanently disabled.
J25
Open (default) Enables UART communication (CDC) between MPU and SAM3U.
Closed Disables UART communication (CDC) between MPU and SAM3U.
J26
Open (default) The on-board J-Link interface is enabled and used for MPU debugging.
Closed The on-board J-Link interface is disabled. MPU debugging is done through the JTAG
connector (J27).
SAMA7G54-EK
Product Overview
© 2022 Microchip Technology Inc.
and its subsidiaries
User Guide DS50003273A-page 7

3. Function Blocks
This section covers the SAMA7G45-EK specifications and provides a high-level description of the board's major
components and interfaces.
This document is not intended to provide detailed information about the processor or about any other components
used on the board. Refer to the components documentation for further details.
Figure 3-1. SAMA7G54-EK Block Diagram
SAMA7G54-V/4HB
BGA-343
14x14mm
0.65mm pitch
Power Supply
MCP16502AB
+SuperCap
System
Supplies
Power
Input
Connectivity
2xmikroBUS
Raspberry Pi
40-pin
Connector
USB 2.0 Host Type A
USB 2.0 Host Type C
USB 2.0 Host/Device Type µAB
SDCard
Connector
RPi CSI
Connector
Memories
4Gb 16-bit
DDR3L
AS4C256M16D3LC
12BCNTR
8-bit 32Gb e.MMC
S40FC004C1B1C00000
8-bit 128MB OctaSPI
MX66LM1G45GXDI00
2x EEPROM
24AA025E48
Peripherals
Gigabit Ethernet
KSZ9131RNX
10/100/1000Mbps
Ethernet
KSZ8081RNAIA
10/100Mbps
WiFi/BT
ATWILC3000-
MR110xA (Not
mounted)
SPDIF RX/TX
2x CAN
Interface
User Interface
User, nRST,
WKUP Button
RGB LEDS
JLINK
CDC/JTAG
FTDI DBGU
4x PDM
Microphone
Secure Element
ATECC608B
SAMA7G54-EK
Function Blocks
© 2022 Microchip Technology Inc.
and its subsidiaries
User Guide DS50003273A-page 8

3.1 Power Supply Topology and Power Distribution
This section describes the implementation and circuitry that ensure adequate voltage stability for all the devices on
the board and a correct power-up sequence for the MPU. The power-up and power-down sequences indicated in the
SAMA7G5 Series data sheet must be respected for a reliable operation of the device.
3.1.1 Input Power Options
The SAMA7G54-EK board can be powered through:
• An external AC to DC +5V wall adapter connected via a 2.1 mm center-positive plug into the power jack of the
board (J1); the recommended output capacity of the power adapter is 2A
• USB port A (J7)
3.1.1.1 Wall Adapter Input
The 5V_EXT from the wall adapter is protected through a pair of Schottky/Zener diodes (D1 and D2) that limit the
input voltage to 5.1V.
The following figure shows the wall adapter input power supply topology.
Figure 3-2. Wall Adapter Input Power Schematic
2.1mm
EJ508A
2
3
1
J1
GND
5V_EXT
External 5V Input Power and Input Power protection
10uF
25V
1206
C4
5V_DC
GNDGND
TP LOOP Black TH
TP2
GND
10uF
25V
1206
C3
GND
PMEG3030EP
D1
5.1V
MMSZ4689ET1G
D2
3.1.1.2 USB Supply Input
The USB-powered operation comes from the USB device port connected to a PC or a 5 VDC supply. The USB
supply is enough to power the board in most applications. It is important to note that when the USB supply is used,
the USB port has limited power. If a USB host port is required for the application, it is recommended to use the
external DC supply or a more capable micro USB external power supply.
The following figure shows the USB input power supply topology.
SAMA7G54-EK
Function Blocks
© 2022 Microchip Technology Inc.
and its subsidiaries
User Guide DS50003273A-page 9

Figure 3-3. USB Input Power Schematic
USBA_N
USBA_P
20pF
50V
0402
C194
20k
0402
1%
R188
GNDGND
USBA_VBUSDETECT_PD11
GND_USBA
USBA_VBUS_5V
EN
1
FLG 2 GND
3
NC
4NC 5
OUT 6 IN
7
OUT 8
USB Power Switch
MIC2025-1YM
U16
USBA_VBUS_5V
USBA_OVCUR_PC7
USBA_EN_5V_PB2
5V_MAIN VDD_3V3
GND
GND
GND
10uF
25V
1206
C195
10uF
25V
1206
C197
0475890001
12
34
5 0
ID D+ D- +5VGND
Mini-B Receptacle
J7
USB Micro-AB type connector to the USBA port (HOST/DEVICE)
0.1uF
10V
0402
C198
100uF
10V
1210
C200
22uF
10V
1206
C199
0.1uF
10V
0402
C196
10k
0402
1%
R189
10k
0402
1%
R187
10k
0402
1%
R186
120R
BLM18PG121SN1D
FB9
120R
BLM18PG121SN1D
FB10
DIFF90
DIFF90
0R
0603
R185
USB_VBUS_5V
GND
GND_USBA
90Ω±15% differential trace impedance
Routing top or bottom
Note: USB-powered operation eliminates the need for additional wires and batteries. It is the preferred mode of
operation for any project that requires only a 5V source at up to 500 mA.
3.1.1.3 Automatic Power Switch
The switch between the two powering options is made by four transistors that ensure the separation between the two
when both are plugged. The switch prioritizes powering from the wall adapter to maximize power transfer.
The following figure shows the automatic power switch topology.
Figure 3-4. Automatic Power Switch Schematic
0603
LTST-C191KRKT
D3
3k
0603
1%
R7
GND
5V_MAIN5V_DC
2
71
6
SIA923AEDJ-T1-GE3
Q1A
5
8 4
3
SIA923AEDJ-T1-GE3
Q1B
2
71
6
SIA923AEDJ-T1-GE3
Q2A
5
8 4
3
SIA923AEDJ-T1-GE3
Q2B
GND
GNDGND
GNDGND
External Power Switch
0.1uF
10V
0402
C7
0.1uF
10V
0402
C14
100k
0402
5%
R8
100k
0402
5%
R9
100uF
10V
1210
C8
22uF
10V
1206
C9
0.1uF
10V
0402
C10
10uF
25V
1206
C13
GND
120R
BLM18PG121SN1D
FB1
USB_VBUS_5V
TP4
SAMA7G54-EK
Function Blocks
© 2022 Microchip Technology Inc.
and its subsidiaries
User Guide DS50003273A-page 10