Mary

5

4

3

2

1

Power Connector +7.5V to +12V DC Input (9V Preferred)
If +VIN exists, all rails driven by +VIN If +VIN not present, all rails driven by USB Power J1 PJ-102A 1 2 3 Barrel Power Jack 2.1mm ID, 5.2mm OD +VIN D1 A C SS15-TP +5.0V GND C1 0.1uF +5.0V R4 10K VIN_COMP R10 10K +3.3V + V+ VIN_COMP_LOGIC VGND U1 LMV7271MF/NOPB +VIN_PROTECTED

Push Button
+3.3V

SelectionCircuitry for Switch 1 Control of /RESET
+3.3V

R1 1K SW1 B3F-1020 1 3 2 4 GND /SW1_CTRL_OF_RESET R8 1K R5 10K Truth Table: /SCR /SWITCH 0 0 0 1 1 0 1 1 GND GND AREF_SWITCHED +3.3V /RESET 0 (pulled down by npn) Z (no effect) Z (no effect) Z (no effect) +3.3V R11 1K +1.8V AREF_FILTERED GND 100 AREF U2 AT91SAM7X512-AU +3.3V 3 NC PB0 PB1 PB2 PB3 PB4 PB5 PB6 PB7 PB8 PB9 PB10 PB11 PB12 PB13 PB14 PB15PB16 PB17 PB18 PB19 PB20 PB21 PB22 PB23 PB24 PB25 PB26 PB27/AD0 PB28/AD1 PB29/AD2 PB30/AD3 AD4 AD5 AD6 AD7 PLLRC 40 41 42 43 54 34 31 38 28 27 44 45 39 30 29 35 53 36 63 64 65 66 67 69 70 71 72 9 10 11 12 3 4 5 6 99 R16 1.5K GND GND GND GND GND GND GND C17 1nF C22 10nF REFCK ETXEN ETX0 ETX1 ECRS ERX0 ERX1 ERXER EMDC EMDIO ETX2 ETX3 ETXER ERX2 ERX3 ERXDV ECOL ERXCK PWRDWN PWM0 PWM1 PWM2 PWM3 LED IRQGND 2 1 1 NO 17 33 48 61 84 95 8 7 15 37 62 87 C37 0.1uF +5.0V U8 SN74LVC1G3157DCKR +5.0V IN 6 COM 4 R12 1K J2 DRXD DTXD RXD0 TXD0 SPI0_NPCS0 PWM0 Q6 PWM1 MMBT3904TT1G RTS0 10K GND AREF_SOURCE_CONTROL IF == 0, AREF_FILTERED = External AREF IF == 1, AREF_FILTERED = Onboard +3.3V CTS0 PWM2 PWM3 SPI0_MOSI SPI0_MISO SPI0_SPCK AREF GND J5 AD0 AD1 AD2 AD3 AD4_TWD AD5_TWCK +3.3V U4 FSA2257MUX Vcc GND MUX2AD4_TWD TWD AD5 2B1 2S 2xSPDT 1A 1B0 GND GND C24 10uF R17 1R AVDDT +3.3V AVDDT AVDDR L2 +3.3V BEAD U7 DM9161AEP C25 0.1uF C26 10uF C27 0.1uF C28 10uF 23 30 41 9 1 2 2 3 +3.3V_uSD C29 0.1uF R20 10K +3.3V AVDDR Q5 BSS84W-7-F SPI0_MISO SPI0_SPCK /RESET +3.3V +3.3V 1 3 5 J7 67996-206HLF MISO +5.0V SCK MOSI RESET GND ICSP 2 4 6 GND +5.0V GND GND GND GND DO NOT PLACE 1S 1B1 AD4 MUX1 +VIN 2B0 2A TWCKAD5_TWCK /RESET +3.3V +5.0V 1 2 3 4 5 6 1 2 3 4 5 6 7 8 LED 5 +5.0V GND GND GND GND /SWITCH1 /RESET BEAD R3 10K Q1 MMBT3904TT1G Q2 MMBT3904TT1G C2 0.1uF C3 0.1uF C4 0.1uF C5 0.1uF C6 10uF C7 0.1uF C8 0.1uF C9 0.1uF C10 10uF C11 0.1uF C12 0.1uF R2 10K +3.3V +1.8V L1 AREF_FILTERED

PWR
+5.0V D2 WHITE

LED
+5.0V D3 BLUE

+VIN_PROTECTED
D

D

R6 1.5K

R7 1K

GND Q3 MMBT3904TT1G R9 10KGND

C13 0.1uF GND

GND

V+

VDDCORE VDDCORE VDDCORE VDDCORE

VDDOUT

/RESET 1 +5.0V 3 C14 10pF GND C15 10pF Y1 18.432MHz GND ERASE

57 58 92 97 98 93 94 79 51 76 78 77 GND RXD0 TXD0 RTS0 CTS0 81 82 86 85 88 89 90 91 13 14 18 19 20 21 22 23 24 25 26 46 47 49 50 55 56 59 60 73 74 75 80

GND

F1 1206L050YR USB5V_F USB5V 2 4

NRST TST ERASE XIN/PGMCK XOUT DDM DDP TCK TDI TDO TMSJTAGSEL

VDDFLASH

ADVREF

VDDIO VDDIO VDDIO VDDIO VDDIO

VDDPLL

VDDIN

USB Connector
J3 ZX62D-B-5P8 VBUS 1 D- 2 D+ 3 ID 4 GND 5 USB Micro-B GND
C

+3.3V

Q4 BSP613P L6327

GND

PCB Labels: Digital I/O 0 Digital I/O 1 Digital I/O 2 Digital I/O 3 Digital I/O 4 Digital I/O 5 Digital I/O 6 Digital I/O 7

Digital Connector 1

6 5 4

U3 USBUF02W6 D4 D1 1 3.3V Grd 2 D3 D2 3GND

GND

R13

HDR100IMP08F-G-V-TH-BLUE J4 1 2 3 4 5 6 7 8 PCB Labels: Digital I/O 8 Digital I/O 9 Digital I/O 10 Digital I/O 11 Digital I/O 12 Digital I/O 13 Gnd Aref

2 wire bus
TWD TWCK SPI0_NPCS0 RSV MUX1 MUX2 R14 10K R15 10K SPI0_MISO SPI0_MOSI SPI0_SPCK SPI1_NPCS0 SPI1_SPCK SPI1_MOSI SPI1_MISO /PWR_CTRL_uSD

GND +3.3V

GND

5V LDO Converter
+VIN_PROTECTED 3 C23 0.47uF Vin GNDU5 +5.0V MC33269DT-5.0G Vout 4

DRXD DTXD /SWITCH1 /SW1_CTRL_OF_RESET C21 10uF

PA0/PGMEN0 PA1/PGMEN1 PA2 PA3 PA4/PGMNCMD PA5/PGMRDY PA6/PGMNOE PA7/PGMNVALID PA8/PGMM0 PA9/PGMM1 PA10/PGMM2 PA11/PGMM3 PA12/PGMD0 PA13/PGMD1 PA14/PGMD2 PA15/PGMD3 PA16/PGMD4 PA17/PGMD5 PA18/PGMD6 PA19/PGMD7 PA20/PGMD8 PA21/PGMD9 PA22/PGMD10 PA23/PGMD11 PA24/PGMD12 PA25/PGMD13 PA26/PGMD14 PA27/PGMD15 PA28 PA29...