component
PCA9685
Public Unreviewedby adom
NXP 16-channel 12-bit PWM controller, TSSOP-28. I2C, per-channel duty + phase, the servo-driver chip. Datasheet-verified.
master
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<meta name=viewport content="width=device-width,initial-scale=1"><title>PCA9685 footprint</title>
<style>
:root{--bg:#0d1117;--panel:#161b22;--edge:#30363d;--ink:#e6edf3;--mut:#8b949e;--acc:#00b8b0;--accb:#00e6dc;--hi:#6ea8fe}
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.bar{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:8px 11px;border-bottom:1px solid var(--edge);flex:none}
.bar .h{font-size:11px;text-transform:uppercase;letter-spacing:.06em;color:var(--mut);font-weight:700}
.bar .sp{flex:1}
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.lyrtog.on{color:var(--ink);border-color:#485162}.lyrtog:not(.on){opacity:.5}
.lyrtog .d{width:8px;height:8px;border-radius:50%;background:#485162}
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.stage.drag{cursor:grabbing}
.stage svg{position:absolute;inset:0;width:100%;height:100%}
.pingroup,.pad{cursor:pointer}
.pingroup.hi .pinvis{stroke:var(--hi)!important;stroke-width:7}
rect.pad.hi{stroke:var(--hi);stroke-width:.15;paint-order:stroke}
.lyr-off{display:none}
#tip{position:fixed;z-index:99;pointer-events:none;display:none;max-width:250px;background:#0d1117;border:1px solid var(--acc);border-radius:8px;padding:7px 10px;box-shadow:0 8px 26px #000a}
#tip .tn{font:700 12px ui-monospace,monospace;color:var(--accb)}
#tip .tt{font-size:10px;text-transform:uppercase;letter-spacing:.04em;color:var(--mut);margin-top:1px}
#tip .td{font-size:11px;color:var(--ink);margin-top:5px;line-height:1.4}
</style></head><body>
<div class=bar><span class=h>PCB footprint</span><span class=sp></span><button class="lyrtog on" data-lyr="copper"><span class="d" style="background:#e35d5d"></span>Copper</button><button class="lyrtog on" data-lyr="silk"><span class="d" style="background:#e6edf3"></span>Silkscreen</button><button class="lyrtog" data-lyr="fab"><span class="d" style="background:#8b949e"></span>Fab</button><button class="lyrtog" data-lyr="courtyard"><span class="d" style="background:#bc8cff"></span>Courtyard</button></div>
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stroke-width='0.050'/><line class='ly-courtyard' x1='-2.450' y1='-5.100' x2='2.450' y2='-5.100' stroke='#4ade80' stroke-width='0.050'/><line class='ly-courtyard' x1='-2.450' y1='-4.680' x2='-2.450' y2='-5.100' stroke='#4ade80' stroke-width='0.050'/><line class='ly-courtyard' x1='-2.450' y1='4.680' x2='-3.850' y2='4.680' stroke='#4ade80' stroke-width='0.050'/><line class='ly-courtyard' x1='-2.450' y1='5.100' x2='-2.450' y2='4.680' stroke='#4ade80' stroke-width='0.050'/><line class='ly-courtyard' x1='2.450' y1='-5.100' x2='2.450' y2='-4.680' stroke='#4ade80' stroke-width='0.050'/><line class='ly-courtyard' x1='2.450' y1='-4.680' x2='3.850' y2='-4.680' stroke='#4ade80' stroke-width='0.050'/><line class='ly-courtyard' x1='2.450' y1='4.680' x2='2.450' y2='5.100' stroke='#4ade80' stroke-width='0.050'/><line class='ly-courtyard' x1='2.450' y1='5.100' x2='-2.450' y2='5.100' stroke='#4ade80' stroke-width='0.050'/><line class='ly-courtyard' x1='3.850' y1='-4.680' x2='3.850' y2='4.680' stroke='#4ade80' stroke-width='0.050'/><line class='ly-courtyard' x1='3.850' y1='4.680' x2='2.450' y2='4.680' stroke='#4ade80' stroke-width='0.050'/><rect class='ly-copper pad' data-num='1' data-name='A0' x='-3.600' y='-4.425' width='1.475' height='0.400' rx='0.100' fill='#f59e0b' stroke='#00000033' stroke-width='0.03' opacity='0.94'/><text class='padnum' x='-2.862' y='-4.225' font-size='0.350' fill='#1c1206' text-anchor='middle' dominant-baseline='central' pointer-events='none' font-family='ui-monospace,monospace' font-weight='700'>1</text><rect class='ly-copper pad' data-num='2' data-name='A1' x='-3.600' y='-3.775' width='1.475' height='0.400' rx='0.100' fill='#f59e0b' stroke='#00000033' stroke-width='0.03' opacity='0.94'/><text class='padnum' x='-2.862' y='-3.575' font-size='0.350' fill='#1c1206' text-anchor='middle' dominant-baseline='central' pointer-events='none' font-family='ui-monospace,monospace' font-weight='700'>2</text><rect class='ly-copper pad' data-num='3' data-name='A2' x='-3.600' y='-3.125' width='1.475' height='0.400' rx='0.100' fill='#f59e0b' stroke='#00000033' stroke-width='0.03' opacity='0.94'/><text class='padnum' x='-2.862' y='-2.925' font-size='0.350' fill='#1c1206' text-anchor='middle' dominant-baseline='central' pointer-events='none' font-family='ui-monospace,monospace' font-weight='700'>3</text><rect class='ly-copper pad' data-num='4' data-name='A3' x='-3.600' y='-2.475' width='1.475' height='0.400' rx='0.100' fill='#f59e0b' stroke='#00000033' stroke-width='0.03' opacity='0.94'/><text class='padnum' x='-2.862' y='-2.275' font-size='0.350' fill='#1c1206' text-anchor='middle' dominant-baseline='central' pointer-events='none' font-family='ui-monospace,monospace' font-weight='700'>4</text><rect class='ly-copper pad' data-num='5' data-name='A4' x='-3.600' y='-1.825' width='1.475' height='0.400' rx='0.100' fill='#f59e0b' stroke='#00000033' stroke-width='0.03' opacity='0.94'/><text class='padnum' x='-2.862' y='-1.625' font-size='0.350' fill='#1c1206' text-anchor='middle' dominant-baseline='central' pointer-events='none' font-family='ui-monospace,monospace' font-weight='700'>5</text><rect class='ly-copper pad' data-num='6' data-name='LED0' x='-3.600' y='-1.175' width='1.475' height='0.400' rx='0.100' fill='#f59e0b' stroke='#00000033' stroke-width='0.03' opacity='0.94'/><text class='padnum' x='-2.862' y='-0.975' font-size='0.350' fill='#1c1206' text-anchor='middle' dominant-baseline='central' pointer-events='none' font-family='ui-monospace,monospace' font-weight='700'>6</text><rect class='ly-copper pad' data-num='7' data-name='LED1' x='-3.600' y='-0.525' width='1.475' height='0.400' rx='0.100' fill='#f59e0b' stroke='#00000033' stroke-width='0.03' opacity='0.94'/><text class='padnum' x='-2.862' y='-0.325' font-size='0.350' fill='#1c1206' text-anchor='middle' dominant-baseline='central' pointer-events='none' font-family='ui-monospace,monospace' font-weight='700'>7</text><rect class='ly-copper pad' data-num='8' data-name='LED2' x='-3.600' y='0.125' width='1.475' height='0.400' rx='0.100' fill='#f59e0b' stroke='#00000033' stroke-width='0.03' opacity='0.94'/><text class='padnum' x='-2.862' y='0.325' font-size='0.350' fill='#1c1206' text-anchor='middle' dominant-baseline='central' pointer-events='none' font-family='ui-monospace,monospace' font-weight='700'>8</text><rect class='ly-copper pad' data-num='9' data-name='LED3' x='-3.600' y='0.775' width='1.475' height='0.400' rx='0.100' fill='#f59e0b' stroke='#00000033' stroke-width='0.03' opacity='0.94'/><text class='padnum' x='-2.862' y='0.975' font-size='0.350' fill='#1c1206' text-anchor='middle' dominant-baseline='central' pointer-events='none' font-family='ui-monospace,monospace' font-weight='700'>9</text><rect class='ly-copper pad' data-num='10' data-name='LED4' x='-3.600' y='1.425' width='1.475' height='0.400' rx='0.100' fill='#f59e0b' stroke='#00000033' stroke-width='0.03' opacity='0.94'/><text class='padnum' x='-2.862' y='1.625' font-size='0.350' fill='#1c1206' text-anchor='middle' dominant-baseline='central' pointer-events='none' font-family='ui-monospace,monospace' font-weight='700'>10</text><rect class='ly-copper pad' data-num='11' data-name='LED5' x='-3.600' y='2.075' width='1.475' height='0.400' rx='0.100' fill='#f59e0b' stroke='#00000033' stroke-width='0.03' opacity='0.94'/><text class='padnum' x='-2.862' y='2.275' font-size='0.350' fill='#1c1206' text-anchor='middle' dominant-baseline='central' pointer-events='none' font-family='ui-monospace,monospace' font-weight='700'>11</text><rect class='ly-copper pad' data-num='12' data-name='LED6' x='-3.600' y='2.725' width='1.475' height='0.400' rx='0.100' fill='#f59e0b' stroke='#00000033' stroke-width='0.03' opacity='0.94'/><text class='padnum' x='-2.862' y='2.925' font-size='0.350' fill='#1c1206' text-anchor='middle' dominant-baseline='central' pointer-events='none' font-family='ui-monospace,monospace' font-weight='700'>12</text><rect class='ly-copper pad' data-num='13' data-name='LED7' x='-3.600' y='3.375' width='1.475' height='0.400' rx='0.100' fill='#f59e0b' stroke='#00000033' stroke-width='0.03' opacity='0.94'/><text class='padnum' x='-2.862' y='3.575' font-size='0.350' fill='#1c1206' text-anchor='middle' dominant-baseline='central' pointer-events='none' font-family='ui-monospace,monospace' font-weight='700'>13</text><rect class='ly-copper pad' data-num='14' data-name='VSS' x='-3.600' y='4.025' width='1.475' height='0.400' rx='0.100' fill='#f59e0b' stroke='#00000033' stroke-width='0.03' opacity='0.94'/><text class='padnum' x='-2.862' y='4.225' font-size='0.350' fill='#1c1206' text-anchor='middle' dominant-baseline='central' pointer-events='none' font-family='ui-monospace,monospace' font-weight='700'>14</text><rect class='ly-copper pad' data-num='15' data-name='LED8' x='2.125' y='4.025' width='1.475' height='0.400' rx='0.100' fill='#f59e0b' stroke='#00000033' stroke-width='0.03' opacity='0.94'/><text class='padnum' x='2.862' y='4.225' font-size='0.350' fill='#1c1206' text-anchor='middle' dominant-baseline='central' pointer-events='none' font-family='ui-monospace,monospace' font-weight='700'>15</text><rect class='ly-copper pad' data-num='16' data-name='LED9' x='2.125' y='3.375' width='1.475' height='0.400' rx='0.100' fill='#f59e0b' stroke='#00000033' stroke-width='0.03' opacity='0.94'/><text class='padnum' x='2.862' y='3.575' font-size='0.350' fill='#1c1206' text-anchor='middle' dominant-baseline='central' pointer-events='none' font-family='ui-monospace,monospace' font-weight='700'>16</text><rect class='ly-copper pad' data-num='17' data-name='LED10' x='2.125' y='2.725' width='1.475' height='0.400' rx='0.100' fill='#f59e0b' stroke='#00000033' stroke-width='0.03' opacity='0.94'/><text class='padnum' x='2.862' y='2.925' font-size='0.350' fill='#1c1206' text-anchor='middle' dominant-baseline='central' pointer-events='none' font-family='ui-monospace,monospace' font-weight='700'>17</text><rect class='ly-copper pad' data-num='18' data-name='LED11' x='2.125' y='2.075' width='1.475' height='0.400' rx='0.100' fill='#f59e0b' stroke='#00000033' stroke-width='0.03' opacity='0.94'/><text class='padnum' x='2.862' y='2.275' font-size='0.350' fill='#1c1206' text-anchor='middle' dominant-baseline='central' pointer-events='none' font-family='ui-monospace,monospace' font-weight='700'>18</text><rect class='ly-copper pad' data-num='19' data-name='LED12' x='2.125' y='1.425' width='1.475' height='0.400' rx='0.100' fill='#f59e0b' stroke='#00000033' stroke-width='0.03' opacity='0.94'/><text class='padnum' x='2.862' y='1.625' font-size='0.350' fill='#1c1206' text-anchor='middle' dominant-baseline='central' pointer-events='none' font-family='ui-monospace,monospace' font-weight='700'>19</text><rect class='ly-copper pad' data-num='20' data-name='LED13' x='2.125' y='0.775' width='1.475' height='0.400' rx='0.100' fill='#f59e0b' stroke='#00000033' stroke-width='0.03' opacity='0.94'/><text class='padnum' x='2.862' y='0.975' font-size='0.350' fill='#1c1206' text-anchor='middle' dominant-baseline='central' pointer-events='none' font-family='ui-monospace,monospace' font-weight='700'>20</text><rect class='ly-copper pad' data-num='21' data-name='LED14' x='2.125' y='0.125' width='1.475' height='0.400' rx='0.100' fill='#f59e0b' stroke='#00000033' stroke-width='0.03' opacity='0.94'/><text class='padnum' x='2.862' y='0.325' font-size='0.350' fill='#1c1206' text-anchor='middle' dominant-baseline='central' pointer-events='none' font-family='ui-monospace,monospace' font-weight='700'>21</text><rect class='ly-copper pad' data-num='22' data-name='LED15' x='2.125' y='-0.525' width='1.475' height='0.400' rx='0.100' fill='#f59e0b' stroke='#00000033' stroke-width='0.03' opacity='0.94'/><text class='padnum' x='2.862' y='-0.325' font-size='0.350' fill='#1c1206' text-anchor='middle' dominant-baseline='central' pointer-events='none' font-family='ui-monospace,monospace' font-weight='700'>22</text><rect class='ly-copper pad' data-num='23' data-name='~{OE}' x='2.125' y='-1.175' width='1.475' height='0.400' rx='0.100' fill='#f59e0b' stroke='#00000033' stroke-width='0.03' opacity='0.94'/><text class='padnum' x='2.862' y='-0.975' font-size='0.350' fill='#1c1206' text-anchor='middle' dominant-baseline='central' pointer-events='none' font-family='ui-monospace,monospace' font-weight='700'>23</text><rect class='ly-copper pad' data-num='24' data-name='A5' x='2.125' y='-1.825' width='1.475' height='0.400' rx='0.100' fill='#f59e0b' stroke='#00000033' stroke-width='0.03' opacity='0.94'/><text class='padnum' x='2.862' y='-1.625' font-size='0.350' fill='#1c1206' text-anchor='middle' dominant-baseline='central' pointer-events='none' font-family='ui-monospace,monospace' font-weight='700'>24</text><rect class='ly-copper pad' data-num='25' data-name='EXTCLK' x='2.125' y='-2.475' width='1.475' height='0.400' rx='0.100' fill='#f59e0b' stroke='#00000033' stroke-width='0.03' opacity='0.94'/><text class='padnum' x='2.862' y='-2.275' font-size='0.350' fill='#1c1206' text-anchor='middle' dominant-baseline='central' pointer-events='none' font-family='ui-monospace,monospace' font-weight='700'>25</text><rect class='ly-copper pad' data-num='26' data-name='SCL' x='2.125' y='-3.125' width='1.475' height='0.400' rx='0.100' fill='#f59e0b' stroke='#00000033' stroke-width='0.03' opacity='0.94'/><text class='padnum' x='2.862' y='-2.925' font-size='0.350' fill='#1c1206' text-anchor='middle' dominant-baseline='central' pointer-events='none' font-family='ui-monospace,monospace' font-weight='700'>26</text><rect class='ly-copper pad' data-num='27' data-name='SDA' x='2.125' y='-3.775' width='1.475' height='0.400' rx='0.100' fill='#f59e0b' stroke='#00000033' stroke-width='0.03' opacity='0.94'/><text class='padnum' x='2.862' y='-3.575' font-size='0.350' fill='#1c1206' text-anchor='middle' dominant-baseline='central' pointer-events='none' font-family='ui-monospace,monospace' font-weight='700'>27</text><rect class='ly-copper pad' data-num='28' data-name='VDD' x='2.125' y='-4.425' width='1.475' height='0.400' rx='0.100' fill='#f59e0b' stroke='#00000033' stroke-width='0.03' opacity='0.94'/><text class='padnum' x='2.862' y='-4.225' font-size='0.350' fill='#1c1206' text-anchor='middle' dominant-baseline='central' pointer-events='none' font-family='ui-monospace,monospace' font-weight='700'>28</text></svg></div>
<div id=tip></div>
<script>
var KIND="footprint", MPN="PCA9685", PINS=[{"desc":"I2C-bus hardware address input bit 0.","name":"A0","number":"1","type":"Input"},{"desc":"I2C-bus hardware address input bit 1.","name":"A1","number":"2","type":"Input"},{"desc":"I2C-bus hardware address input bit 2.","name":"A2","number":"3","type":"Input"},{"desc":"I2C-bus hardware address input bit 3.","name":"A3","number":"4","type":"Input"},{"desc":"I2C-bus hardware address input bit 4.","name":"A4","number":"5","type":"Input"},{"desc":"LED driver channel 0.","name":"LED0","number":"6","type":"Output"},{"desc":"LED driver channel 1.","name":"LED1","number":"7","type":"Output"},{"desc":"LED driver channel 2.","name":"LED2","number":"8","type":"Output"},{"desc":"LED driver channel 3.","name":"LED3","number":"9","type":"Output"},{"desc":"LED driver channel 4.","name":"LED4","number":"10","type":"Output"},{"desc":"LED driver channel 5.","name":"LED5","number":"11","type":"Output"},{"desc":"LED driver channel 6.","name":"LED6","number":"12","type":"Output"},{"desc":"LED driver channel 7.","name":"LED7","number":"13","type":"Output"},{"desc":"Supply ground (0 V reference).","name":"VSS","number":"14","type":"Power"},{"desc":"LED driver channel 8.","name":"LED8","number":"15","type":"Output"},{"desc":"LED driver channel 9.","name":"LED9","number":"16","type":"Output"},{"desc":"LED driver channel 10.","name":"LED10","number":"17","type":"Output"},{"desc":"LED driver channel 11.","name":"LED11","number":"18","type":"Output"},{"desc":"LED driver channel 12.","name":"LED12","number":"19","type":"Output"},{"desc":"LED driver channel 13.","name":"LED13","number":"20","type":"Output"},{"desc":"LED driver channel 14.","name":"LED14","number":"21","type":"Output"},{"desc":"LED driver channel 15.","name":"LED15","number":"22","type":"Output"},{"desc":"Active-LOW output enable.","name":"~{OE}","number":"23","type":"Input"},{"desc":"I2C-bus hardware address input bit 5.","name":"A5","number":"24","type":"Input"},{"desc":"External clock input (50 MHz max).","name":"EXTCLK","number":"25","type":"Input"},{"desc":"I2C-bus serial clock line.","name":"SCL","number":"26","type":"Input"},{"desc":"I2C-bus serial data line.","name":"SDA","number":"27","type":"Bidir"},{"desc":"Supply voltage, 2.3 V to 5.5 V.","name":"VDD","number":"28","type":"Power"}];
var byNum={}; PINS.forEach(function(p){byNum[String(p.number)]=p;});
var stage=document.getElementById('stage'), svg=stage.querySelector('svg'), tip=document.getElementById('tip');
// ---- pan/zoom ----
var vb=(svg.getAttribute('viewBox')||'0 0 100 100').split(/\s+/).map(Number), base=vb.slice();
function setVB(){svg.setAttribute('viewBox',vb.join(' '));}
stage.addEventListener('wheel',function(e){e.preventDefault();var r=stage.getBoundingClientRect();var mx=(e.clientX-r.left)/r.width,my=(e.clientY-r.top)/r.height;var f=e.deltaY<0?0.88:1.14;var nw=vb[2]*f,nh=vb[3]*f;vb[0]+=(vb[2]-nw)*mx;vb[1]+=(vb[3]-nh)*my;vb[2]=nw;vb[3]=nh;setVB();},{passive:false});
var pan=null;
stage.addEventListener('pointerdown',function(e){pan={x:e.clientX,y:e.clientY};stage.classList.add('drag');stage.setPointerCapture(e.pointerId);});
stage.addEventListener('pointermove',function(e){if(!pan)return;var r=stage.getBoundingClientRect();vb[0]-=(e.clientX-pan.x)/r.width*vb[2];vb[1]-=(e.clientY-pan.y)/r.height*vb[3];pan={x:e.clientX,y:e.clientY};setVB();});
function endPan(){pan=null;stage.classList.remove('drag');}
stage.addEventListener('pointerup',endPan);stage.addEventListener('pointerleave',endPan);
stage.addEventListener('dblclick',function(){vb=base.slice();setVB();});
// ---- cross-highlight bus ----
function els(n){return [].slice.call(document.querySelectorAll('[data-num="'+n+'"]'));}
function clearHi(){[].slice.call(document.querySelectorAll('.hi')).forEach(function(e){e.classList.remove('hi');});}
function hi(n){els(n).forEach(function(e){e.classList.add('hi');});}
function post(n){try{parent.postMessage({type:'lbr-hover',pin:n===null?null:String(n),mpn:MPN},'*');}catch(_){}}
function showTip(n,x,y){var p=byNum[String(n)];if(!p)return;tip.innerHTML='<span class=tn></span><div class=tt></div><div class=td></div>';tip.querySelector('.tn').textContent=n+' '+(p.name||'');tip.querySelector('.tt').textContent=p.type||'';var d=p.desc||'';if(d)tip.querySelector('.td').textContent=d;else tip.querySelector('.td').style.display='none';tip.style.display='block';tip.style.left=(x+14)+'px';tip.style.top=(y+12)+'px';}
[].slice.call(document.querySelectorAll('.pingroup,.pad')).forEach(function(g){
var n=g.getAttribute('data-num');
g.addEventListener('mouseenter',function(e){clearHi();hi(n);post(n);showTip(n,e.clientX,e.clientY);});
g.addEventListener('mousemove',function(e){tip.style.left=(e.clientX+14)+'px';tip.style.top=(e.clientY+12)+'px';});
g.addEventListener('mouseleave',function(){clearHi();post(null);tip.style.display='none';});
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window.addEventListener('message',function(e){var d=e.data||{};if(d.type!=='lbr-hover')return;clearHi();if(d.pin!=null)hi(d.pin);});
// ---- footprint layer toggles ----
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function apply(on){[].slice.call(document.querySelectorAll('.ly-'+b.getAttribute('data-lyr'))).forEach(function(el){el.classList.toggle('lyr-off',!on);});}
apply(b.classList.contains('on'));
b.addEventListener('click',function(){apply(b.classList.toggle('on'));});
});
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function ph(){var h=Math.max(360,Math.min(16000,document.body.scrollHeight||420));parent.postMessage({type:'readme-height',height:h},'*');}
window.addEventListener('load',ph);setTimeout(ph,300);
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