.PS # UNO.m4 log_init include(ics.m4) finalscale = 0.72 textht = 0.1/finalscale textoffset = 1.5bp__ * 2 ifpostscript(,latexcommand({\tiny\sf)) divert(-1) `Header([A][1|2], rows, wid, ht, boxspec, pinlen;pinsize) arg1: A= type A; number of columns arg2: pins per column arg3,4: custom wid, ht arg5: eg fill_(0.9)' define(`Header', `[ define(`m4tp',ifinstr(`$1',A,A))define(`m4Hq',patsubst(`$1',A))dnl define(`m4Hn',`ifelse(m4Hq,,1,m4Hq)')dnl define(`m4Hm',`ifelse(`$2',,2,`$2')')dnl define(`m4Hw',`ifelse(`$3',,`m4Hn*L_unit*3',`($3)')')dnl define(`m4Hh',`ifelse(`$4',,`m4Hm*L_unit*3',`($4)')')dnl ifinstr(`$6',;, `stacksplit_(`m4Jdr',`$6',;)dnl define(`m4Jps',ifelse(m4Jdr,,`L_unit',m4Jdr))popdef(`m4Jdr')dnl define(`m4Jpl',ifelse(m4Jdr,,`lg_plen*L_unit',m4Jdr))popdef(`m4Jdr') ', `define(`m4Jps',L_unit)dnl define(`m4Jpl',`ifelse(`$6',,lg_plen*L_unit,`$6')')')dnl Block: rotbox(m4Hw,m4Hh,`$5') ifelse(`m4tp',A,`pushdef(`L_unit',(linewid/6))') define(`m4Hct',1)dnl for_(1,m4Hm,1, `HeaderPin(Block.NW+vec_(m4Jps*3/2,-(m4x-1/2)*m4Hh/m4Hm), ifinstr(m4tp,A,1,eval(m4Hct-1)), P`'m4Hct, w, (m4Jpl+m4Jps);m4Jps) define(`m4Hct',incr(m4Hct)) ifelse(m4Hn, 2, `HeaderPin(Block.NE+vec_(-m4Jps*3/2,-(m4x-1/2)*m4Hh/m4Hm), 1, P`'m4Hct, e, (m4Jpl+m4Jps);m4Hps) define(`m4Hct',incr(m4Hct))') ') ifelse(`m4Hq',A,`popdef(`L_unit')') `$7' ]') `HeaderPin(location, type, Picname, n|e|s|w, [length][;pinsize]) arg2: 0= square' define(`HeaderPin',` ifinstr(`$5',;, `stacksplit_(`m4Hdr',`$5',;)dnl define(`m4Hps',ifelse(m4Hdr,,`L_unit',m4Hdr))popdef(`m4Hdr')dnl define(`m4Hpl',ifelse(m4Hdr,,`lg_plen*L_unit',m4Hdr))popdef(`m4Hdr') ', `define(`m4Hps',L_unit)dnl define(`m4Hpl',`ifelse(`$5',,lg_plen*L_unit,`$5')')')dnl ifelse(`$1',,,`move to `$1';') ifelse(`$3',,,`$3':) line to ifelse( `$4',n,`rvec_(0,m4Hpl)', `$4',e,`rvec_(m4Hpl,0)', `$4',s,`rvec_(0,-m4Hpl)', `rvec_(-m4Hpl,0)') ifelse(`$3',,,Pin`$3':) ifelse(ifelse(`$2',,0,`$2'),0, `rotbox(m4Hps,m4Hps,fill_(1))', `circle diam m4Hps fill_(1)') at last line.start ') define(`ATMEGA16U2',`[ Chip: box wid 10*lg_pinsep ht 25*lg_pinsep foreach_(`x', `Arightpin(patsubst(x,;,`,'))', 6;PD0, 7;PD1, 8;PD2, 9;PD3, 10;PD4, 11;PD5, 12;PD6, 13;PD7, 131;nul, 5;PC2, 26;PC4, 25;PC5, 23;PC6, 22;PC7, 132;nul, 133;nul, 14;PB0, 15;PB1, 16;PB2, 17;PB3, 18;PB4, 19;PB5, 20;PB6, 21;PB7) foreach_(`x', `Aleftpin(patsubst(x,;,`,'))', 33;PAD, 100;nul, 28;UGND, 29;D$+$, 30;D$-$, 31;UVCC, 27;UCAP, 101;nul, 102;nul, 3;GND, 4;VCC, 103;nul, 104;nul, 32;AVCC, 105;nul, 106;nul, 1;XTAL1, 107;nul, 2;XTAL2(PC0), 108;nul, 109;nul) lg_pin(Pin109+(0,lg_pinsep),ifpostscript(,\tiny\sf) RESET,Pin24,wN,24,pinlen) ]') define(`Aleftpin',`move to Chip.sw+(0,m4Lx*lg_pinsep) Pin`$1': ifelse(`$2',nul,Here,dnl `line left pinlen "`$1'" above "`$2'" ljust at last line.start')') define(`Arightpin',`move to Chip.se+(0,m4Lx*lg_pinsep) Pin`$1': ifelse(`$2',nul,Here,dnl `line right pinlen "`$1'" above "`$2'" rjust at last line.start')') define(`ATMEGA328P',`[ Chip: box wid 10*lg_pinsep ht 23*lg_pinsep foreach_(`x', `Arightpin(patsubst(x,;,`,'))', 2;PD0, 3;PD1, 4;PD2, 5;PD3, 6;PD4, 11;PD5, 12;PD6, 13;PD7, 100;nul, 23;PC0, 24;PC1, 25;PC2, 26;PC3, 27;PC4, 28;PC5, 101;nul, 14;PB0, 15;PB1, 16;PB2, 17;PB3, 18;PB4, 19;PB5) foreach_(`x', `Aleftpin(patsubst(x,;,`,'))', 201;nul, 202;nul, 203;nul, 204;nul, 205;nul, 206;nul, 207;nul, 208;nul, 209;nul, 8;GND, 7;VCC, 301;nul, 22;AGND, 20;AVCC, 21;AREF, 302;nul, 9;XTAL1, 303;nul, 10;XTAL2, 304;nul, 305;nul) lg_pin(Pin305+(0,lg_pinsep),ifpostscript(,\tiny\sf) RESET,Pin1,wN,1,pinlen) ]') define(`rswitch',`dswitch(`$1',,WBoDCP) DS: last line.start; DC: last line.c; DE: last line.end DL: DC-vec_(dimen_/6,0); DR: DC+vec_(dimen_/6,0) {{"1" at DL above rjust}; {"3" at DR above ljust} { line from DL to DL-vec_(0,dimen_/6) chop dotrad_ chop 0 {"2" below rjust} continue to DS-vec_(0,dimen_/6) then to DS; dot } { line from DR to DR+vec_(0,-dimen_/6) chop dotrad_ chop 0 {"4" below ljust} continue to DE+vec_(0,-dimen_/6) then to DE; dot } line from DC+vec_(dimen_/10,-dimen_/6) to DC+vec_(-dimen_/10,-dimen_/6) move to last line.c; line to rvec_(0,-dimen_/3) \ then to rvec_(-dimen_/3,-dimen_/3) {"5" below}} ') divert(0)dnl [ define(`pinlen',`30bp__') define(`lg_pinsep',(1.2*lg_pinsep)) del = lg_pinsep define(`pindiam',0.1) define(`egnd',`ground(,,E); "GND" at last line.c below') U3: ATMEGA16U2 `"ATMEGA16U2-MU(R)"' at U3.Chip.s below `"U3"' at U3.Chip.nw ljust above ZU4: ATMEGA328P with .Chip.nw at U3.Chip.sw+(-2.5,-10*del) `"ATMEGA328P-PU"' at ZU4.Chip.s below `"ZU4"' at ZU4.Chip.nw ljust above dot(at U3.Pin2.end) R1: resistor(down_ 2*lg_pinsep,,E) rlabel(,"R1" rjust "1M" rjust) dot dot(at R1.start-(2*del,0)) xtal(down_ 2*lg_pinsep) rlabel(,16,"MHz"); dot XT2: dot(at last line.start-(2*del,0)); { "XT2" at last [].n above } Br1: jumper(left_ from U3.Pin33.end to (XT2,U3.Pin33)) rlabel(1,,2); llabel(,"GROUND") BRE: dot line to (Here,U3.Pin28) then to U3.Pin28.end {"UGND" at (Br1,Here) above} XT1: dot(at XT2-(del,R1.len)); { "XT1" at last [].n above } line from XT1 to U3.Pin1.end line from U3.Pin2.end to (XT1,XT2) C11: capacitor(left_ 3*del); rlabel(,"C11"); llabel(,"22`'pF") C9: capacitor(from XT1 to (Here,XT1)); {"C9" "22`'pF" at last [].s+(0,-11bp__)} { line to C11.end } dot G1: egnd line from XT1 down_ 3*del; continue to (G1,Here); dot(,,1) {"XT3" at last [].n above} dot(at Here+(0,-3/2*del),,1); {"XT4" at last [].n above} { line to (XT2,Here) then to XT2 chop dotrad_ chop 0 } USBVCC: dot(at Here+(0,-7/2*del),,1) {"USBVCC" at last [].n-(3/2*del,0) above ljust} { line to (Here,U3.Pin31) chop dotrad_ chop 0; continue to U3.Pin31.end } dot(at Here+(2*del,0),,1); {"VUCAP" at last [].e+(0,-5bp__) ljust} line to (Here,U3.Pin27) chop dotrad_ chop 0; dot line from U3.Pin27.end to (G1.x-4.5*del,U3.Pin27.y) C8: capacitor(down_ to (Here,Br1)); llabel("C8",,1`\,'\mu) Bus1: dot dot(at U3.Pin33.end) move to U3.Pin3.end; line to (Here,U3.Chip.s) G2: ground(,T,E); {"GND" at last line.c below } dot(at U3.Pin32.end) {line to U3.Pin4.end; dot} line left del; ground(,,E,U); {"$+5`\,'$V" at last line.c above} line from U3.Pin4.end left_ 2*del capacitor(down_ 3*del); { llabel("C7",,100n) } G3: ground(,T,E); {"GND" at last line.c below } line from U3.Pin30.end to (G1.x-2*del,U3.Pin30.y); TD: Here continue to (Here,U3.Pin32) { "RD$-$" above rjust }; continue left_ 1.5*del RN3A: resistor(left_ 3/2*dimen_,,E); rlabel(,"22R RN3A") Dm: line left_ 7*del USB: [ K: box invis wid dimen_/2 ht 5*lg_pinsep "USB" rjust at K.e line thick 1.5 from K.nw to K.ne then to K.se then to K.sw foreach_(`x', `Pin`'m4Lx: K.ne-(0,m4Lx/5*K.ht) "x" at Pin`'m4Lx ljust above', 1 XUSB, 2 D$-$, 3 D$+$, 4 UGND) P_1: K.sw; {"P1" at P_1 below rjust} P_2: K.s; {"P2" at P_2 below ljust} ] with .Pin2 at Here; "X2" at USB.ne above rjust move to U3.Pin29.end line to (TD.x-del,Here.y); continue to (Here,Dm-(0,lg_pinsep)) { "RD$+$" above rjust} continue to (RN3A.start,Here) RN3D: resistor(left_ 3/2*dimen_,,E); llabel(,"22R RN3D") line to USB.Pin3 dot(at RN3A.end); line to (Here,RN3D) Z2: variable(`resistor(down_ to (Here,U3.Pin27),,E); rlabel("Z2")',NN) dot(at RN3D.end-(2*del,0)) Z1: variable(`resistor(to (Here,U3.Pin27),,E); rlabel("Z1")',NN) dot; line to (Z2,Here) move up Z1.len/4 from last line.c; "CG0603MLC-05E" "X 2" line down_ del from USB.P_1; continue to (USB.P_2,Here); dot line from USB.P_2 to (USB.P_2,Z1.end) then to Z1.end dot(at (USB.P_2,Here)+(3/2*del,0)); line to (Here,USBVCC) dot(,,1); {"USHIELD" at last [].n+(4bp__,0) above} L1: reversed(`inductor',down_ from Z1.end to (Z1,C8.end),W,,) rlabel(,"L1"); llabel("BLM21" ljust); dot { dot(at (Z2,Here)); line to (Here,U3.Pin28); dot(,,1) "UGND" at last [].n above } line from USB.Pin1 to (Z2,USB.Pin1) then up 2*del XUSB: dot(,,1); {"XUSB" at last [].n above} line from (Z1,USB.Pin3) to (Z1,XUSB); DP: dot(,,1); {"D$+$" at last [].n above} dot(at (DP,USB.Pin2)-(2*del,0)); line to (Here,XUSB) DM: dot(,,1); "D$-$" at last [].n above line from USB.Pin4 to (DM,USB.Pin4) then to (DM,BRE) then to BRE line from U3.Pin18.end right_ 3.5*del JP2: Header(A2,2,4*del,2*lg_pinsep,,0.2;pindiam) with .P3.end at Here "JP2" at JP2.Block.nw above ljust "2X2M - NM" at JP2.s below "1" at JP2.P3.end above ljust; "3" at JP2.P1.end above ljust "2" at JP2.P4.end above rjust; "4" at JP2.P2.end above rjust line from JP2.P1.end to (JP2.P1.end,U3.Pin19) then to U3.Pin19.end dot(at JP2.P1.end); line up 3.5*del TPPB5: dot(,,1); {"PB5" at last [].e ljust} TPPB4: dot(at TPPB5-(del*3/2,0),,1); {"PB4" at last [].w rjust} line to (Here,JP2.P3); dot line from JP2.P2.end to (JP2.P2.end,TPPB4) TPPB7: dot(,,1); {"PB7" at last [].w rjust} line from JP2.P4.end right del*3/2; continue to (Here,TPPB4) TPPB6: dot(,,1); {"PB6" at last [].n above} line from U3.Pin20.end right del then up del; continue to (TPPB6,Here); dot line from U3.Pin21.end up del; continue to (TPPB7,Here); dot ICSP1: Header(A2,3,4*del,2.5*lg_pinsep,,0.2;pindiam) \ with .P1.end at (JP2.P1.end,U3.Pin14) "ICSP1" at last [].Block.nw above ljust "3X2 M" at last [].Block.sw below ljust for_(1,5,2,`"m4x" at ICSP1.P`'m4x.end above ljust') for_(2,6,2,`"m4x" at ICSP1.P`'m4x.end above rjust') line from ICSP1.P1.end to (ICSP1.P1.end,U3.Pin17) then to U3.Pin17.end line from ICSP1.P3.end left del; continue to (Here,U3.Pin15) \ then to U3.Pin15.end dot(at U3.Pin24.end); RN1C: resistor(up_ 5*lg_pinsep,,E); rlabel(,"10K","RN1C"); llabel(5,,3) dot line up_ 2*del; ground(,T,E,U); {"+5 V" at last line.w rjust} dot(at U3.Pin24.end-(del,0)); D3: diode(up_ RN1C.len); llabel(,,"D3") line to (TPPB6.x+del,Here.y) continue to (Here,ICSP1.P2.end) then to ICSP1.P2.end line from ICSP1.P5.end down 2*del; continue to (TPPB6.x+2*del,Here.y) TRESET2: Here continue to (Here.x,D3.end.y+del) then to (RN1C.end.x-2*del,D3.end.y+del) continue to (Here,U3.Pin24) then to U3.Pin24.end G4: ground(at ICSP1.P6.end,,E); {"GND" at last line.c below } line from ICSP1.P4.end right del then up U3.Pin16.y-ICSP1.P4.y \ then to U3.Pin16.end dot(at ICSP1.P1.end); line left_ 2.5*del then down_ 5*del MISO2: dot(,,1); {"MISO2" at last [].s below } dot(at ICSP1.P3.end-(del,0)); line to (Here,MISO2) SCK2: dot(,,1); {"SCK2" at last [].s below ljust } dot(at TRESET2); line to (Here,SCK2) RESET2: dot(,,1); {"RESET2" wid 36bp__ at last [].s below } dot(at ICSP1.P4.end+(del,0)); line to (Here,RESET2) MOSI2: dot(,,1); {"MOSI2" at last [].s-(del,0) below } line right_ del from U3.Pin11.end then up_ del*3/2 TXLED: reversed(`diode',right_ elen_,LER) rlabel(,"YELLOW"); llabel("TX"); dot {line up_ del; TPTXL: dot(,,1); "TXL" at last [].n above} RN2C: resistor(right_ elen_,,E); llabel(,"1 K RN2C"); rlabel(6,,3); dot line from U3.Pin10.end to (TXLED.start,U3.Pin10) RXLED: reversed(`diode',to (TXLED.end,Here),LER) rlabel(,"YELLOW"); llabel("RX"); dot {line up_ del; dot(,,1); "RXL" at last [].n above} RN2B: resistor(right_ elen_,,E); llabel(,"1 K RN2B"); rlabel(7,,2) line to (Here,TPTXL); ground(,T,E,U); "+5 V" at last line.c above # ZU4 connections line left_ del*3/2 from ZU4.Pin7.end; dot {line up_ del; G4: ground(,T,E,U); "+5 V" at last line.c above } C6: capacitor(down dimen_); llabel("100n",,"C6"); dot { dot(at ZU4.Pin8.end) }; dot(at (ZU4.Pin8.end,Here)) { G4: ground(at Here+(0,-del),,E); {"GND" at last line.c below } line to ZU4.Pin22.end } line left_ Here.x-C6.x + dimen_*5/4 C10: capacitor(up_ C6.len); llabel("100n",,"C10"); dot { line to (Here,ZU4.Pin20) then to ZU4.Pin20.end } L2: inductor(right_ to C6.start,W); rlabel(,"L2"); llabel(,"100$`\,'\mu$H") line left 2*del from ZU4.Pin9.end; PE: dot R2: resistor(up_ to (Here,ZU4.Pin10),,E); llabel(,"R2"); rlabel(,"1 M"); dot dot(at Here-(del*4.0,0)); { "XTAL2" above ljust } XTAL: xtal(down_ R2.len); llabel("16 MHz"); dot; { "XTAL1" below ljust } pushdef(`dimen_',dimen_/2) capacitor(left_ del from 0.2 between XTAL.start and XTAL.end) capacitor(left_ del from 0.8 between XTAL.start and XTAL.end) popdef(`dimen_') line up XTAL.len*0.6 line left del from last line.c then down del G5: ground(,T,E); "GND" at last line.c below line down_ del from XTAL.end; dot(,,1); "XT1" at last [].s below line up del from XTAL.start; dot(,,1); "XT2" at last [].n above line from XTAL.start to ZU4.Pin10.end line from XTAL.end to ZU4.Pin9.end line left 2*del from ZU4.Pin1.end; dot D2: diode(up_ dimen_); rlabel(,"D2") dot(at D2.start-(2.5*del,0)) RN1D: resistor(up_ D2.len,,E); rlabel("10 K",,"RN1D"); dot { line to D2.end } line up_ del; ground(,T,E,U); "+5 V" at last line.c above line from ZU4.Pin1.end to (RN1D-(1.5*del,0),ZU4.Pin1) then up 7*del continue to (ZU4.Chip.w,Here)+(del,0); BRB: dot { line down_ 2*del; Br2: jumper(right_ dimen_) llabel(1,,2); rlabel(,"RESET\_EN"); line up_ 2*del; dot } line right_ dimen_+del C5: capacitor(right_ dimen_); llabel(,"C5"); rlabel("100n"); dot { RN2D: resistor(down_ dimen_,,E); rlabel(,"1 K"); llabel(,"RN2D") G6: ground(,T,E); "GND" at last line below } { line up_ del; DTR: dot(,,1); "DTR" at last [].e ljust } line from U3.Pin13.end right del/2; continue to (Here,U3.Chip.s) \ then left+2*del; continue to (Here,BRB) then to C5.end TP2: Here; continue to C5.end line up 3*del from BRB TP1: dot #; line left BRB.x-RN1D.x RESET: rswitch( right_ dimen_ from (USB.e,Here)+(del/2,0)) { "RESET" at RESET+(-del*1.7,1.0*del) above } line left del from RESET.start then down del G7: ground(,T,E); "GND" at last line.c below ICSP: Header(A2,3,4*del,2.5*lg_pinsep,,0.2;pindiam) \ with .Block.sw at ZU4.Pin19.end+(2*del,del*3) "ICSP" at ICSP.Block.nw above ljust "3X2 M" at ICSP.Block.sw below ljust for_(1,5,2,`"m4x" at ICSP.P`'m4x.end above ljust') for_(2,6,2,`"m4x" at ICSP.P`'m4x.end above rjust') dot(at ZU4.Pin19.end); line to (Here,ICSP.P3) then to ICSP.P3.end line from ZU4.Pin18.end right del; dot line to (Here,ICSP.P1) then to ICSP.P1.end move to ICSP.P5.end; line to (ZU4.Pin19.end,Here)-(del,0); continue to (Here,TP1); dot line from ICSP.P2.end up_ del; ground(,T,E,U); "+5 V" at last line.c above line from ICSP.P6.end down_ del; G9: ground(,T,E); "GND" at last line.c below move to ICSP.P4.end; line right_ del then down Here.y - ZU4.Pin17.y; dot line right_ from RESET.end to (U3.Chip.e+(12*del,0),TP1) POWER: Header(A1,8,1.5*del,7*lg_pinsep,,0.2;pindiam) with .P3.end at Here "POWER" wid 36bp__ at POWER.Block.nw above ljust "8X1F-H8.5" at POWER.Block.sw below ljust for_(1,8,1,`"m4x" at POWER.P`'m4x.end above ljust') line from POWER.P2.end left del/2 then down POWER.P2.y-POWER.P5.y ; dot line from POWER.P4.end left 2.5*del; "+3V3" above ljust dot(at POWER.P3.end-(del*1.5,0)); line up 2*del dot(,,1); "RESET" at last [].n above line from POWER.P5.end left 3.5*del then up 4*del; ground(,T,E,U) "+5 V" at last line.c above line left del*2 from POWER.P8.end; "VIN" above ljust line left del/2 from POWER.P7.end; dot line from POWER.P6.end to (Here,POWER.P6.end) then to Here+(0,-2.5*del) G10: ground(,T,E); "GND" at last line.c below right_ IOH: Header(A1,10,1.5*del,10*lg_pinsep,,0.2;pindiam) \ with .P10.end at ZU4.Pin14.end + (del*15,0) "IOH" at IOH.Block.nw above ljust "10X1F-H8.5" at IOH.Block.se below ljust for_(0,9,1,` { "incr(m4x)" above ljust at IOH.P`'eval(10-m4x).end } move to IOH.P`'eval(10-m4x).start-(pindiam/2+dotrad_/2,0) ifelse(m4x,6,,`dot') move to IOH.P`'eval(10-m4x).end ifelse(eval(m4x<6),1,`line from ZU4.Pin`'eval(14+m4x).end to Here ') ifelse(m4x,6,,` line right del*4; dot(,pindiam/2,1) ') ifelse(eval(m4x<6),1,`"eval(8+m4x)" at last [].e ljust ')') "SCL" at last [].e ljust "SDA" at 3rd last [].e ljust "AREF" at 5th last [].e ljust AD: Header(A1,6,1.5*del,6*lg_pinsep,,0.2;pindiam) \ with .P6.end at (IOH.P10.end,ZU4.Pin23) #.end + (del*6,0) "AD" at AD.Block.nw above ljust "6X1F-H8.5" at AD.Block.se below ljust for_(0,5,1,` dot(at AD.P`'eval(6-m4x).start-(pindiam/2+dotrad_/2,0)) line from ZU4.Pin`'eval(23+m4x).end \ to AD.P`'eval(6-m4x).end; {"incr(m4x)" above ljust} line right del*4; dot(,pindiam/2,1) "A`'m4x" at last [].e ljust ') IOL: Header(A1,8,1.5*del,8*lg_pinsep,,0.2;pindiam) \ with .P8.end at (AD.P1.end,ZU4.Pin2) "IOL" at IOL.Block.nw above ljust "8X1F-H8.5" at IOL.Block.sw ljust below for_(0,7,1,` dot(at IOL.P`'eval(8-m4x).start-(pindiam/2+dotrad_/2,0)) line from ZU4.Pin`'eval(ifelse(eval(m4x<5),1,2,6)+m4x).end \ to IOL.P`'eval(8-m4x).end; {"incr(m4x)" above ljust} line right del*4; dot(,pindiam/2,1) "m4x" at last [].e ljust ') line from ZU4.Pin21.end up RESET.y-ZU4.Pin21.y-del \ then right ICSP.P4.end.x-ZU4.Pin21.end.x + 2*del continue to (Here,IOH.P3)+(0,del*3/2); dot { C4: capacitor(down_ 3.0*del); llabel("C4",,"100n") { ground(,T,E); "GND" at last line.e ljust} line from IOH.P4.end to (Here,IOH.P4); dot } line right del*3/2; continue to (Here,IOH.P3) then to IOH.P3.end line left del/2 from IOH.P2.end; continue to (Here,AD.P2); dot line left del*3/2 from IOH.P1.end; continue to (Here,AD.P1); dot line right_ del*2 from U3.Pin9.end then down_ 3.5*lg_pinsep; dot { line right_ 2*del; dot(,,1); "RX" at last [].e ljust } line to (Here,RESET)-(0,del) RN4B: resistor(down_ dimen_,,E); llabel(7,"RN4B" ljust "1 K" ljust,2) line down_ del then left_ Here.x - IOH.P9.end.x + del*2.5 continue to (Here,ZU4.Pin2); dot line right_ del from U3.Pin8.end; dot { line right_ 3*del; dot(,,1); "TX" at last [].e ljust } line to (Here,RN4B.start) RN4A: resistor(down_ dimen_,,E); rlabel(8,"RN4A" rjust "1 K" rjust,1) line to (IOH.P9.end,Here)-(del*3.5,0); continue to (Here,ZU4.Pin3); dot Pwr: [ Vin: line right 2*del "VIN" above RN1A: resistor(down_ dimen_*5/4,,E); rlabel(8, "RN1A" rjust "10 K" rjust ,1) CMP: dot RN1B: resistor(down_ dimen_*5/4,,E); rlabel(2, "RN1B" rjust "10 K" rjust ,7) B12: ground(,T,E); "GND" at last line below line right_ 2*del from CMP; dot { line up_ 2*del; dot(,,1); "CMP" at last [].n above } line right_ del POA: opamp(,"+" ljust,"-" ljust) with .In1 at Here "U5A" at last [].n; "1" at POA.Out above rjust "3" at POA.In1 rjust above; "2" at POA.In2 rjust above line left_ del from POA.In2 then down_ del; "+3V3" below dot(at POA.Out); {line up_ 2*del; dot(,,1); "GATE" at last [].n above } T1: mosfet(down_ dimen_*1.5,R,dMdPyEDSQdB,) with .G at Here "T1" at T1 + (-dimen_/4,del*5/4) "FDN340P" at T1 + (0,-del*5/4) rjust dot(at T1.S); { line up_ 2*del; ground(,T,E,U); "+5 V" at last line above } ] with .RN1B at (USB.e.x+del,RN1C.y-2*del) dot(at XUSB+(0,-del/2)) F1: fuse(right_ to (Pwr.T1.D,Here)); { "500 mA" ljust } { "MF-MSMF050-2" at last [].sw below ljust } line to Pwr.T1.D line from Pwr.T1.S right_ 2.5*lg_pinsep { U2:box ht 3*lg_pinsep wid 5*lg_pinsep with .nw at Here+(0,lg_pinsep/2) } {"1" above rjust}; {"IN" ljust} "LP2985-33DBVR" at U2.s below "U2" above ljust at U2.nw "3" above rjust at U2.w; line left del from U2.w then up_ lg_pinsep; dot "ON/$\overline{\hbox{OFF}}$" at U2.w ljust U2P2: U2.w+(0,-lg_pinsep); "2" at U2P2 above rjust; "GND" at U2P2 ljust line from U2P2 left del then down_ del G15: ground(,T,E); "GND" at last line.c below U2P5: (U2.e.x,U2.e.y+lg_pinsep) "OUT" at U2P5 rjust; "5" at U2P5 above ljust line from U2P5 right 2*del "+3V3" below; dot { line up_ del; dot(,,1); "3V3" at last [].n above } C3: capacitor(down_ to(Here,G15)); rlabel(,"C3" rjust "1$`\,'\mu$" rjust) ground(,T,E); "GND" at last line.c below "NC/FB" at (U2.e.x,U2P2.y) rjust "SCK" above ljust at Pwr.Vin + (0,4*del) line right_ 3*del U5B: opamp(,"+" ljust, "-" ljust) with .In1 at Here "5" at U5B.In1 above rjust; "6" at U5B.In2 above rjust "U5B" at last [].n; "7" at U5B.Out above rjust line from U5B.In2 left del then down del then right U5B.Out.x-U5B.In1.x+del TD2: dot dot(at U5B.Out); dot(at Here+(0,2*del),,1); "LCMD" at last [].e ljust line down_ from last [].s to TD2 RN2A: resistor(right_ dimen_*5/4,,E); llabel(8,"1K",1); rlabel(,"RN2A") dot; {line up_ 2*del; dot(,,1); "LL" at last [].n above } diode(right_ dimen_*5/4,LE); rlabel(,"YELLOW") line down_ dimen_/4; egnd X1:box ht 3*lg_pinsep wid 5*lg_pinsep with .w at (U2.x,U5B.y+del) "X1 DC21MMX" at X1.nw below ljust "PWR SUPPLY" at X1.nw ljust X1P1: 1/3 between X1.sw and X1.se; "1" at X1P1 rjust below X1P2: 2/3 between X1.sw and X1.se; "2" at X1P2 rjust below line down_ del from X1P1; dot; { egnd } line right X1.e.x+del - Here.x then up_ X1.e.y-Here.y then to X1.e "3" above ljust at X1.e line from X1P2 down del/2 then right X1.e.x+del*2 - X1P2.x \ then up X1.n.y - X1P2.y + del/2; dot { line up_ 2*del; PWRIN: dot(,,1); "PWRIN" at last [].w rjust } D1: diode(right_ dimen_); llabel(,"D1"); rlabel(,"M7"); dot { PC1: capacitor(down_ dimen_,C); llabel(,"PC1" ljust "47$`\,'\mu$" ljust) G16: egnd } { line to (Here,PWRIN); dot(,,1); "VIN" at last [].e ljust } line right 3*del; { "3" above rjust } U1P1: Here U1: box ht 3*lg_pinsep wid 4*lg_pinsep with .nw at Here+(0,lg_pinsep/2) "IN" at U1P1 ljust; "OUT" at (U1.e,U1P1) rjust "1" below rjust at U1.s "U1" at U1.nw + (0,textht*1.5) above ljust "NCP1117ST50T3G" ljust line from U1.s to (U1.s,G16); egnd U1P4: (U1.e,U1P1); U1P2: U1P4+(0,-del) { "4" at U1P4 above ljust }; { "2" at U1P2 above ljust }; line right_ 2*del from U1P4; dot; line from U1P2 to (Here,U1P2); dot; { line to (Here,U1P4) } { PC2: capacitor(down_ to (Here,G16),C) llabel(,"PC2" ljust "47$`\,'\mu$" ljust); egnd } line right_ del*3/2 from (Here,U1P4); dot { line to (Here,PWRIN); ground(,T,E,U); "+5V" at last line.c above } line right_ del*3/2; dot; { line to (Here,PC2.start) C2: capacitor(down_ to (Here,G16),C) llabel(,"C2" ljust "100$`\,'\mu$" ljust); egnd } { line to (Here,PWRIN); dot(,,1); "5V" at last [].n above } line right_ del*3/2 then to (Here.x+del*3/2,PWRIN.y); dot(,,1) "5V1" at last [].n above ] scaled finalscale #howbox_ ifpostscript(,latexcommand(}%)) .PE