ATSAM3X8E pinout

84 MHz Arm Cortex-M3 microcontroller with 512 KiB flash, USB OTG, Ethernet MAC, CAN and analog peripherals.

LQFP-144 144 contacts

LFBGA-144

144 contacts Current package

Microchip Technology · LFBGA-144 · Grid array · Refer to the mechanical drawing for footprint dimensions.

LFBGA-144 pinout

123456789101112 A B C D E F G H J K L M

Transparent top view · A1 at the upper left Scroll the map to reach all contacts.

Selected pin details

K9 · PA18

Bidirectional · GPIO

Programmable input/output line. Peripheral A · TWCK0 Peripheral B · A20 Extra function · WKUP9

After reset · PIO input with pull-up at reset. System functions and analog mode can override the digital I/O behavior.

11057C · Package pinout and signal descriptions

Electrical limits · Link to this pin

All 144 pins

Pin	Signal	Direction	Function
A1	PA9 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · UTXD Peripheral B · PWMH3
A2	PB23 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · CTS2 Peripheral B · SPI0_NPCS3 Extra function · WKUP14
A3	PB14 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · CANTX1 Peripheral B · PWMH2
A4	PC26 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · A5 Peripheral B · TIOB6
A5	PC24 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · A3 Peripheral B · PWML7
A6	PC20 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · NANDWE Peripheral B · PWMH4
A7	PB10 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · UOTGVBOF Peripheral B · A18
A8	PB6 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · ERX1
A9	PB4 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · ECRSDV/ERXDV
A10	PC4 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · D2 Peripheral B · PWML1
A11	PA28 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · SPI0_NPCS0 Peripheral B · PCK2 Extra function · WKUP11
A12	PA27 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · SPI0_SPCK Peripheral B · A20 Extra function · WKUP10
B1	PA10 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · RXD0 Peripheral B · DATRG Extra function · WKUP5
B2	PB26 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · CTS0 Peripheral B · TCLK0 Extra function · WKUP15
B3	PB24 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · SCK2 Peripheral B · NCS2
B4	PC28 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · A7 Peripheral B · TIOA7
B5	PC23 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · A2 Peripheral B · PWML6
B6	PC0 Bidirectional	Bidirectional	Programmable input/output line. Extra function · ERASE
B7	PB9 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · EMDIO
B8	PB8 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · EMDC
B9	PB3 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · ETX1
B10	PB2 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · ETX0
B11	PA26 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · SPI0_MOSI Peripheral B · A19
B12	PA25 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · SPI0_MISO Peripheral B · A18
C1	PA13 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · TXD1 Peripheral B · PWMH2
C2	PA12 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · RXD1 Peripheral B · PWML1 Extra function · WKUP7
C3	PB25 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · RTS0 Peripheral B · TIOA0
C4	PB22 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · RTS2 Peripheral B · PCK0
C5	PC22 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · A1 Peripheral B · PWML5
C6	PC21 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · A0/NBS0 Peripheral B · PWML4
C7	PB11 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · UOTGID Peripheral B · A19
C8	PB7 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · ERXER
C9	PC10 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · D8 Peripheral B · ECRS
C10	PA29 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · SPI0_NPCS1 Peripheral B · NRD
C11	PA21 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · MCDA0 Peripheral B · PWML0
C12	PC29 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · A8 Peripheral B · TIOB7
D1	PA17 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · TWD0 Peripheral B · SPCK0
D2	PD0 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · A10 Peripheral B · MCDA4
D3	PA11 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · TXD0 Peripheral B · ADTRG Extra function · WKUP6
D4	PA15 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · CTS1 Peripheral B · TF Extra function · WKUP8
D5	PA14 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · RTS1 Peripheral B · TK
D6	PC27 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · A6 Peripheral B · TCLK6
D7	PC25 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · A4 Peripheral B · TIOA6
D8	VDDIO Supply	Supply	Digital I/O supply. Connect each VDDIO contact and place a local ceramic bypass capacitor nearby.
D9	PB5 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · ERX0
D10	PB0 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · ETXCK/EREFCK
D11	PC30 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · A9 Peripheral B · TCLK7
D12	PC19 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · NANDOE Peripheral B · PWMH5
E1	PD1 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · A11 Peripheral B · MCDA5
E2	PD2 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · A12 Peripheral B · MCDA6
E3	PD3 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · A13 Peripheral B · MCDA7
E4	PD4 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · A14 Peripheral B · TXD3
E5	PD5 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · A15 Peripheral B · RXD3
E6	VDDCORE Supply	Supply	1.8 V supply for the core and embedded logic. Connect all core supply contacts.
E7	VDDCORE Supply	Supply	1.8 V supply for the core and embedded logic. Connect all core supply contacts.
E8	VDDCORE Supply	Supply	1.8 V supply for the core and embedded logic. Connect all core supply contacts.
E9	PB1 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · ETXEN
E10	PC18 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · NWR0/NWE Peripheral B · PWMH6
E11	PB19 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · RK Peripheral B · PWML3 Extra function · AD12
E12	PB21 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · RXD2 Peripheral B · SPI0_NPCS2 Extra function · AD14/WKUP13
F1	PD8 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · A21/NANDALE Peripheral B · TIOB8
F2	PD6 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · A16/BA0 Peripheral B · PWMFI2
F3	PD9 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · A22/NANDCLE Peripheral B · TCLK8
F4	PA0 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · CANTX0 Peripheral B · PWML3
F5	PD7 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · A17/BA1 Peripheral B · TIOA8
F6	GND Return	Return	Connect to the ground plane with local return paths for the associated supply capacitors.
F7	GND Return	Return	Connect to the ground plane with local return paths for the associated supply capacitors.
F8	VDDIO Supply	Supply	Digital I/O supply. Connect each VDDIO contact and place a local ceramic bypass capacitor nearby.
F9	PC17 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · D15 Peripheral B · ETXER
F10	PC14 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · D12 Peripheral B · ERXCK
F11	PB20 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · TXD2 Peripheral B · SPI0_NPCS1 Extra function · AD13
F12	PB17 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · RF Peripheral B · PWML1 Extra function · AD10
G1	PA5 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · TIOA2 Peripheral B · PWMFI0 Extra function · WKUP2
G2	PA7 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · TCLK2 Peripheral B · NCS1 Extra function · WKUP3
G3	PA8 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · URXD Peripheral B · PWMH0 Extra function · WKUP4
G4	PA1 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · CANRX0 Peripheral B · PCK0 Extra function · WKUP0
G5	GND Return	Return	Connect to the ground plane with local return paths for the associated supply capacitors.
G6	GND Return	Return	Connect to the ground plane with local return paths for the associated supply capacitors.
G7	GND Return	Return	Connect to the ground plane with local return paths for the associated supply capacitors.
G8	PC16 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · D14 Peripheral B · ETX3
G9	PC15 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · D13 Peripheral B · ETX2
G10	PC13 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · D11 Peripheral B · ECOL
G11	PB13 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · TWCK1 Peripheral B · PWMH1 Extra function · AD9
G12	PB18 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · RD Peripheral B · PWML2 Extra function · AD11
H1	XOUT Output	Output	Main oscillator amplifier output. Use the load network for the chosen crystal.
H2	PB30 Bidirectional	Bidirectional	System debug pin at reset. Check the system-I/O setting before using it as GPIO. Peripheral A · TDO/TRACESWO
H3	PB28 Bidirectional	Bidirectional	System debug pin at reset. Check the system-I/O setting before using it as GPIO. Peripheral A · TCK/SWCLK
H4	PB29 Bidirectional	Bidirectional	System debug pin at reset. Check the system-I/O setting before using it as GPIO. Peripheral A · TDI
H5	VDDBU Supply	Supply	Backup and slow-clock supply. Respect its relationship with VDDIO and the backup-domain controls.
H6	VDDCORE Supply	Supply	1.8 V supply for the core and embedded logic. Connect all core supply contacts.
H7	VDDIO Supply	Supply	Digital I/O supply. Connect each VDDIO contact and place a local ceramic bypass capacitor nearby.
H8	PC12 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · D10 Peripheral B · ERX3
H9	PC11 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · D9 Peripheral B · ERX2
H10	PA3 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · TIOB1 Peripheral B · PWMFI1 Extra function · AD1/WKUP1
H11	PB12 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · TWD1 Peripheral B · PWMH0 Extra function · AD8
H12	PA2 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · TIOA1 Peripheral B · NANDRDY Extra function · AD0
J1	XIN Input	Input	Main oscillator amplifier input. Use the recommended crystal or external clock circuit.
J2	GNDPLL Return	Return	Connect to the ground plane with local return paths for the associated supply capacitors.
J3	PD10 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · NWR1/NBS1
J4	PB31 Bidirectional	Bidirectional	System debug pin at reset. Check the system-I/O setting before using it as GPIO. Peripheral A · TMS/SWDIO
J5	TST Input	Input	Factory test and fast programming selection. Use the documented low strap for normal operation.
J6	FWUP Input	Input	Backup-domain force wake-up input. Check the bias and polarity for the selected wake-up mode.
J7	PB27 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · NCS3 Peripheral B · TIOB0
J8	NRST Bidirectional	Bidirectional	Active-low system reset controlled by the reset controller. Use open-drain drive for external reset.
J9	PA19 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · MCCK Peripheral B · PWMH1
J10	PA22 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · MCDA1 Peripheral B · TCLK3 Extra function · AD4
J11	PA4 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · TCLK1 Peripheral B · NWAIT Extra function · AD2
J12	PA6 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · TIOB2 Peripheral B · NCS0 Extra function · AD3
K1	VDDCORE Supply	Supply	1.8 V supply for the core and embedded logic. Connect all core supply contacts.
K2	GNDUTMI Return	Return	Connect to the ground plane with local return paths for the associated supply capacitors.
K3	VDDPLL Supply	Supply	1.8 V supply for the main oscillator and PLL. Follow the device-specific decoupling and filtering circuit.
K4	NRSTB Input	Input	Active-low asynchronous reset, including the backup region. This pin has an internal pull-up to VDDBU.
K5	SHDN Output	Output	Shutdown control output. Use it to control external power when implementing backup mode.
K6	PC3 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · D1 Peripheral B · PWMH0
K7	PC6 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · D4 Peripheral B · PWML2
K8	PC7 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · D5 Peripheral B · PWMH2
K9	PA18 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · TWCK0 Peripheral B · A20 Extra function · WKUP9
K10	PA23 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · MCDA2 Peripheral B · TCLK4 Extra function · AD5
K11	PA16 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · SPCK1 Peripheral B · TD Extra function · AD7
K12	PA24 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · MCDA3 Peripheral B · PCK1 Extra function · AD6
L1	DHSDP Bidirectional	Bidirectional	USB high-speed positive data signal. Follow the combined high-speed and full-speed data-line schematic.
L2	DHSDM Bidirectional	Bidirectional	USB high-speed negative data signal. Follow the combined high-speed and full-speed data-line schematic.
L3	VDDUTMI Supply	Supply	USB PHY supply. Use 3.3 V nominal for USB and follow the separate filter shown in the hardware checklist.
L4	JTAGSEL Input	Input	Selects boundary scan when high. Use the documented low strap for normal debugger access.
L5	GNDBU Return	Return	Connect to the ground plane with local return paths for the associated supply capacitors.
L6	PC1 Bidirectional	Bidirectional	Programmable input/output line.
L7	PC2 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · D0 Peripheral B · PWML0
L8	PC5 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · D3 Peripheral B · PWMH1
L9	PC9 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · D7 Peripheral B · PWMH3
L10	PA20 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · MCCDA Peripheral B · PWML2
L11	VDDANA Supply	Supply	Analog supply for the ADC and DAC. Follow the supply and reference limits for the intended resolution.
L12	PB16 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · TCLK5 Peripheral B · PWML0 Extra function · DAC1
M1	DFSDP Bidirectional	Bidirectional	USB full-speed positive data signal. Follow the series termination schematic.
M2	DFSDM Bidirectional	Bidirectional	USB full-speed negative data signal. Follow the series termination schematic.
M3	VBG Reference	Reference	USB PHY bias reference. Use the specified 6.8 kΩ and 10 pF network.
M4	VBUS Input	Input	USB bus sense. Follow the bus-powered or self-powered USB circuit in the checklist.
M5	XIN32 Input	Input	32.768 kHz oscillator input. See the slow-clock design guidance before using an external crystal.
M6	XOUT32 Output	Output	32.768 kHz oscillator output. See the slow-clock design guidance.
M7	VDDOUT Regulator output	Regulator output	Output of the on-chip 1.8 V regulator. Use the specified output capacitor for regulator stability.
M8	VDDIN Supply	Supply	Input to the on-chip regulator. On SAM7X it also supplies the ADC.
M9	PC8 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · D6 Peripheral B · PWML3
M10	GNDANA Return	Return	Connect to the ground plane with local return paths for the associated supply capacitors.
M11	ADVREF Analog reference	Analog reference	Reference voltage input for the analog converter. Follow the reference limits and connection for the selected use.
M12	PB15 Bidirectional	Bidirectional	Programmable input/output line. Peripheral A · CANRX1 Peripheral B · PWMH3 Extra function · DAC0/WKUP12

Signal assignments

Serial Wire Debug

Use SWCLK and SWDIO for debug. SWO is optional trace output. SWCLK → PB28 · SWDIO → PB31 · SWO → PB30

JTAG

The system-I/O debug pads are selected at reset. JTAGSEL low enables normal debugger access. TCK → PB28 · TDI → PB29 · TDO → PB30 · TMS → PB31

Debug UART

PIOA peripheral A. Cross TX and RX at the adapter. URXD → PA8 · UTXD → PA9

USART 0–3

Check the PIO A/B or extra-function selection for each pad. RXD0 → PA10 · TXD0 → PA11 · RXD1 → PA12 · TXD1 → PA13 · RTS1 → PA14 · CTS1 → PA15 · TXD2 → PB20 · RXD2 → PB21 · RTS2 → PB22 · CTS2 → PB23 · SCK2 → PB24 · RTS0 → PB25 · CTS0 → PB26 · TXD3 → PD4 · RXD3 → PD5

TWI / I²C

Check the PIO A/B or extra-function selection for each pad. TWD0 → PA17 · TWCK0 → PA18 · TWD1 → PB12 · TWCK1 → PB13

SPI

Check the PIO A/B or extra-function selection for each pad. SPCK1 → PA16 · SPCK0 → PA17 · SPI0_MISO → PA25 · SPI0_MOSI → PA26 · SPI0_SPCK → PA27 · SPI0_NPCS0 → PA28 · SPI0_NPCS1 → PA29 · SPI0_NPCS1 → PB20 · SPI0_NPCS2 → PB21 · SPI0_NPCS3 → PB23

CAN 0–1

Check the PIO A/B or extra-function selection for each pad. CANTX0 → PA0 · CANRX0 → PA1 · CANTX1 → PB14 · CANRX1 → PB15

Ethernet MAC

Check the PIO A/B or extra-function selection for each pad. ETXCK/EREFCK → PB0 · ETXEN → PB1 · ETX0 → PB2 · ETX1 → PB3 · ECRSDV/ERXDV → PB4 · ERX0 → PB5 · ERX1 → PB6 · ERXER → PB7 · EMDC → PB8 · EMDIO → PB9 · ECRS → PC10 · ERX2 → PC11 · ERX3 → PC12 · ECOL → PC13 · ERXCK → PC14 · ETX2 → PC15 · ETX3 → PC16 · ETXER → PC17

ADC and DAC

Check the PIO A/B or extra-function selection for each pad. AD0 → PA2 · AD1 → PA3 · AD2 → PA4 · AD3 → PA6 · AD7 → PA16 · AD4 → PA22 · AD5 → PA23 · AD6 → PA24 · AD8 → PB12 · AD9 → PB13 · DAC0 → PB15 · DAC1 → PB16 · AD10 → PB17 · AD11 → PB18 · AD12 → PB19 · AD13 → PB20 · AD14 → PB21

High-speed multimedia card interface

Check the PIO A/B or extra-function selection for each pad. MCCK → PA19 · MCCDA → PA20 · MCDA0 → PA21 · MCDA1 → PA22 · MCDA2 → PA23 · MCDA3 → PA24 · MCDA4 → PD0 · MCDA5 → PD1 · MCDA6 → PD2 · MCDA7 → PD3

PWM

Check the PIO A/B or extra-function selection for each pad. PWML3 → PA0 · PWMFI1 → PA3 · PWMFI0 → PA5 · PWMH0 → PA8 · PWMH3 → PA9 · PWML1 → PA12 · PWMH2 → PA13 · PWMH1 → PA19 · PWML2 → PA20 · PWML0 → PA21 · PWMH0 → PB12 · PWMH1 → PB13 · PWMH2 → PB14 · PWMH3 → PB15 · PWML0 → PB16 · PWML1 → PB17 · PWML2 → PB18 · PWML3 → PB19 · PWML0 → PC2 · PWMH0 → PC3 · PWML1 → PC4 · PWMH1 → PC5 · PWML2 → PC6 · PWMH2 → PC7 · PWML3 → PC8 · PWMH3 → PC9 · PWMH6 → PC18 · PWMH5 → PC19 · PWMH4 → PC20 · PWML4 → PC21 · PWML5 → PC22 · PWML6 → PC23 · PWML7 → PC24 · PWMFI2 → PD6

USB OTG

Follow the manufacturer’s routing, series termination and VBUS topology for the selected USB mode. HS D+ → DHSDP · HS D− → DHSDM · FS D+ → DFSDP · FS D− → DFSDM · VBUS control → PB10 · USB ID → PB11 · VBUS sense → VBUS · Bias reference → VBG

Electrical limits

Parameter	Limit	Conditions and source
VDDIO1.62–3.6 V	1.62–3.6 V	Use the specified startup timing and rail relationship with VDDIN. 11057C §§5.1–5.2
VDDCORE and VDDPLL1.62–1.95 V	1.62–1.95 V	Nominal 1.8 V. Use the specified output capacitance if fed from VDDOUT. 11057C §5.1, AT03462 §2.1
USB PHY supply3.0–3.6 V	3.0–3.6 V	Nominal 3.3 V. Follow the filtered-rail layout and ripple specification. 11057C §5.1, AT03462 §2.1
Flash and SRAM512 KiB · 96 KiB + 4 KiB NFC	512 KiB · 96 KiB + 4 KiB NFC	Flash is organized in two 256 KiB banks. The 4 KiB NFC bank is additional to the 64 KiB and 32 KiB system banks. 11057C configuration summary
Maximum CPU clock84 MHz	84 MHz	Follow the clock source, flash wait states and applicable silicon errata. 11057C Electrical Characteristics

Models and documents

Includes the 144-lead LQFP and 144-ball LFBGA order codes in 11057C §48. The package power pins differ. GPIO peripheral choices use the SAM3X rows in the PIO tables.

ATSAM3X8E: 512 KiB flash in two 256 KiB banks. SRAM: 64 KiB + 32 KiB system banks and 4 KiB NAND controller SRAM.
ATSAM3X8EA-CU: MRL A · 84 MHz Cortex-M3 · industrial temperature −40 to +85 °C.

SAM3X / SAM3A data sheet· 11057C · Tables 4-3/4-4, PIO multiplexing §9.3, ordering §48 and errata §49.
SAM3X and SAM3A schematic checklist· AT03462 Rev. A · Supply filtering, reset, debug and peripheral wiring.
SAM source register· Manufacturer source identifiers, retrieval dates, applicability and SHA-256 digests.