SCHEMATIC. 0.1uF C17. nreset. 20pF C15. 16MHz GND. nreset GND XTAL2 XTAL1 ADC7 ADC6 PD3 PD4 PD1 PD7 PD2 PD5 PD6 PD0 PC5 PC3 PC1 PC0 PC4 PC2

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1 A A-DB SCHEMATIC D D C C B B A A Title Number Revision Size A Date: //0 Sheet of File: C:\altium\..\AEVRev.SchDoc Drawn By: AEV Demo Board APEK Bob Pickett Sr SCH W W uf C VREF PHASE PHASE I0 VBB VREF VREF J J OUTB OUTA OUTA OUTB OUTA OUTB 0. R 0. R 0. R 0. R 0.uF C 0.uF C uf C JMP 0.uF C 0uF C CN nf C nf C nf C I PHASE I0 I SLEEPn 0.uF C JP JP JP EXTVREF EXTVREF EXTVREF 0 R 0 R 0 R SCLK DIN V 0.uF C 0.uF C /SYNC PD PD XTAL XTAL PD PD 0 PD PB0 PB PB PB PB PB A ADC AREF 0 ADC PC0 PC PC PC PC PC PD0 0 PD PD U 0pF C 0.uF C 0.uF C MHz Y 0pF C V 0k R V /SYNC V SCLK DIN CBUS DTR# IO DSR# CBUS 0 CBUS0 USBDP USBDM VOUT RESET# RI# DCD# CBUS CTS# RTS# RXD TXD 0 U VUSB D- D+ ID CN.uF C 0.0uF C L R R0 0.uF C0 0.uF C UA UB 0k RNETA 0k RNETB 0k RNETC 0k RNETD V V 0.uF C SCL SDA SCL SDA SW 0k R VV 0 0 CN TXD RXD RXD TXD V V JMP VV N/C SCK MISO 0 MOSI CN VOUTC VOUTD /SYNC SCLK DIN VDD VOUTA VOUTB VREFIN/OUT 0 PAD U 0.uF C Allegro Logo Vin TAB Vout LMMP V U VUSB k R 0uF C OUTA SENSE OUTB VBB OUTB SENSE OUTA PHASE 0 SLEEPn VREF VREF VREF PHASE PHASE OUTA 0 SENSE OUTB VBB OUTB SENSE OUTA MODE I I 0 VCP CP CP I0 I0 ENABLE SLUG N/C U AEV MODE ENABLE J

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5 A BILL OF MATERIALS APEK,BOARD,DEMO,AEV BOM Rev. All Devices MUST be ROHS Compliant Page of Bill of Materials //0 Item Quantity Designator value Description PartType Footprint C, C uf 0V Capacitor Chemi-Con EMZA00ADA0MF0G; Digikey - -- UCC F Cap C, C, C 0.uF 0V Capacitor TDK C0XRH0K0AA; Digikey --- C 0uF 0V Capacitor Taiyo Yuden LMKBJ0KL-T; 0 Digikey --- C, C, C nf 0V Capacitor Panasonic ECJ-VBH0K; Digikey 00 PCC0BNCT- C, C 0.uF 0V Capacitor Murata GCMBRHKAL; 00 Digikey C 0uF 0V Capacitor Abracon ATCC-P-00-0M-T; Polarized00Cap Digikey ATCC-P-00-0M-TCT- C, C, C, C0, 0.uF V Capacitor Murata GRMRC0KA0D; 00 C, C Digikey 0--- C, C 0pF 0V Capacitor TDK C0C0GH00J; Digikey C 0.uF 0V Capacitor TDK C0XRH0K00AA; CAPC0L Digikey C 0.0uF 0V Capacitor Murata GRMRH0KA0D; 00 Digikey 0--- C.uF V Capacitor Taiyo Yuden EMKBKN-T; 0 Digikey --- CN Use two -Pin Connectors On Shore ED/DS; Digikey ED- -Pin.mm Screwdown Connector CN USB Mini B Recepticle JAE Electronics DXR00HNE00; DXR00HNE00 Digikey CN Cut from 0-Pin Strip Tyco --0; Digikey A-0- -Pin Dual Row 0." Connector ENABLE, EXTVREF, EXTVREF, EXTVREF, I0, I0, I, I, MODE, OUTA, OUTB, OUTA, OUTB, OUTA, OUTB, PHASE, PHASE, PHASE, SLEEPn, V, VBB, VREF, VREF, VREF, VUSB Large Test Point Keystone Electronics 00; Digikey 00K- PAD TP HB Bumpon Foot M SJ-0 (CLEAR); Digikey SJ0- Bumpon Foot - J, J -Pin Screw Down Connector On Shore Technology ED0/DS; Digikey ED0- -pin screw down connector, -pin screw down connector J -Pin Screw Down Terminal Block On Shore ED0/DS; Digikey -pin screw down connector ED- Pins JMP, JMP, JP, JP, Cut pins from 0-pin strip. Samtec TSW-0-0-T-S; Digikey -pos. shunt, -pos. shunt JP SAM L Ferrite Bead Laird MI00K00R-0; Digikey pcb Rev. Pins QR, QR, QR Sockets for R, R and R Mill-Max ; Digikey ED- R, R, R, R 0. W Resistor Yageo RLFK-00RL; Digikey ( Metric) -0.TCT- R, R, R 0 Resistor Lead (0.mm-0.mm) N/A AXIAL-0. R, R0 /W Resistor Vishay/Dale CRCW00R0FKEA; 00 Digikey -.0CCT- R, R 0k /W Resistor Panasonic ERJ-GEYJ0V; Digikey 00 P0KACT- R k /W Resistor Panasonic ERJ-ENF0V; Digikey 00 P.0KCCT- RNET 0k Isolated Resistors CTS C00JP; Digikey C00JPCT- CTS Series SW Dual SPDT Switch Grayhill STC0T; Digikey STC0T-STC0T 0 U Bipolar Stepper and DC Motor Driver AEV EV U V Linear Voltage Regulator National LMMP-.0/NOPB; SOT Digikey LMMP-.0CT- U -Bit Microcontroller Atmel ATMEGAP-AUR; Digikey ATMEGAP-AURCT- -TQFP (x) U USB to UART IC FTDI FTXS-R; Digikey --- SSOP-0 U Quad -Bit DAC Analog Devices ADRBCPZ- 0-Pin EE w/slug REEL; Digikey ADRBCPZ- REELCT- U Dual N-CH Fet's Rohm UMKNTN; Digikey SOT- UMKNTNCT- W, W Gauge Buss Wire (00mils above pcb) Scope Ground Y MHz MHz Crystal Oscillator(0pF Caps) ECS ECS-0-0-X-TR; Digikey XCCT- ECS CSM-X 00 Northeast Cutoff Worcester, Massachusetts 0-00 U.S.A ;

6 A Revision History Number Date Description August, 0 Initial release Copyright 0, reserves the right to make, from time to time, such departures from the detail specifications as may be required to permit improvements in the performance, reliability, or manufacturability of its products. Before placing an order, the user is cautioned to verify that the information being relied upon is current. Allegro s products are not to be used in any devices or systems, including but not limited to life support devices or systems, in which a failure of Allegro s product can reasonably be expected to cause bodily harm. The information included herein is believed to be accurate and reliable. However, assumes no responsibility for its use; nor for any infringement of patents or other rights of third parties which may result from its use. For the latest version of this document, visit our website: Northeast Cutoff Worcester, Massachusetts 0-00 U.S.A ;