component
STC89C52RC-40I-LQFP44
Public Made by Adomby adom
STC Micro Microcontrollers (MCU/MPU/SOC), LQFP-44(10x10). Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
main
Ray
pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (silk-marker, drawn, top-left)
f89694f
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{
"schema": "adom.pads/1",
"slug": "stc89c52rc-40i-lqfp44",
"footprint": "LQFP-44_10x10mm_P0.8mm",
"generated_from": {
"footprint": "LQFP-44_10x10mm_P0.8mm@sha256:a24003d5101dbf25",
"pins": "page.json:component.pins",
"overrides": null
},
"pin1": {
"pad": "1",
"at": [
-5.6625,
-4.0
],
"corner": "top-left",
"source": "silk-marker",
"derived_from": "LQFP-44_10x10mm_P0.8mm@sha256:a24003d5101dbf25"
},
"pad_count": 44,
"symbol_pins": [
"1",
"10",
"11",
"12",
"13",
"14",
"15",
"16",
"17",
"18",
"19",
"2",
"20",
"21",
"22",
"23",
"24",
"25",
"26",
"27",
"28",
"29",
"3",
"30",
"31",
"32",
"33",
"34",
"35",
"36",
"37",
"38",
"39",
"4",
"40",
"41",
"42",
"43",
"44",
"5",
"6",
"7",
"8",
"9"
],
"paste_apertures": 0,
"issues": [],
"pads": [
{
"pad": "1",
"kind": "smd",
"shape": "roundrect",
"at": [
-5.6625,
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],
"rot": 0.0,
"size": [
1.475,
0.55
],
"layers": [
"F.Cu",
"F.Mask",
"F.Paste"
],
"thermal": false,
"pin": "1",
"name": "P1.5",
"type": "bidirectional",
"description": "Standard quasi-bidirectional I/O port PORT1[5]. Internal weak pull-up; drives/reads CMOS level.",
"is_pin1": true,
"source": {
"geometry": "LQFP-44_10x10mm_P0.8mm.kicad_mod",
"meaning": "page.json:component.pins",
"correspondence": "kicad: symbol pin number == pad name"
}
},
{
"pad": "2",
"kind": "smd",
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"at": [
-5.6625,
-3.2
],
"rot": 0.0,
"size": [
1.475,
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],
"layers": [
"F.Cu",
"F.Mask",
"F.Paste"
],
"thermal": false,
"pin": "2",
"name": "P1.6",
"type": "bidirectional",
"description": "Standard quasi-bidirectional I/O port PORT1[6]. Optionally connects to external crystal for the on-chip USB-serial helper circuit in some board layouts.",
"is_pin1": false,
"source": {
"geometry": "LQFP-44_10x10mm_P0.8mm.kicad_mod",
"meaning": "page.json:component.pins",
"correspondence": "kicad: symbol pin number == pad name"
}
},
{
"pad": "3",
"kind": "smd",
"shape": "roundrect",
"at": [
-5.6625,
-2.4
],
"rot": 0.0,
"size": [
1.475,
0.55
],
"layers": [
"F.Cu",
"F.Mask",
"F.Paste"
],
"thermal": false,
"pin": "3",
"name": "P1.7",
"type": "bidirectional",
"description": "Standard quasi-bidirectional I/O port PORT1[7].",
"is_pin1": false,
"source": {
"geometry": "LQFP-44_10x10mm_P0.8mm.kicad_mod",
"meaning": "page.json:component.pins",
"correspondence": "kicad: symbol pin number == pad name"
}
},
{
"pad": "4",
"kind": "smd",
"shape": "roundrect",
"at": [
-5.6625,
-1.6
],
"rot": 0.0,
"size": [
1.475,
0.55
],
"layers": [
"F.Cu",
"F.Mask",
"F.Paste"
],
"thermal": false,
"pin": "4",
"name": "RST",
"type": "input",
"description": "Active-high reset input. HD-version parts have an internal 45k-100k pull-down to GND; hold high for at least two machine cycles to reset the MCU.",
"is_pin1": false,
"source": {
"geometry": "LQFP-44_10x10mm_P0.8mm.kicad_mod",
"meaning": "page.json:component.pins",
"correspondence": "kicad: symbol pin number == pad name"
}
},
{
"pad": "5",
"kind": "smd",
"shape": "roundrect",
"at": [
-5.6625,
-0.8
],
"rot": 0.0,
"size": [
1.475,
0.55
],
"layers": [
"F.Cu",
"F.Mask",
"F.Paste"
],
"thermal": false,
"pin": "5",
"name": "P3.0/RxD",
"type": "bidirectional",
"description": "P3.0 general-purpose I/O; alternate function RxD = UART1 serial data receive input.",
"is_pin1": false,
"source": {
"geometry": "LQFP-44_10x10mm_P0.8mm.kicad_mod",
"meaning": "page.json:component.pins",
"correspondence": "kicad: symbol pin number == pad name"
}
},
{
"pad": "6",
"kind": "smd",
"shape": "roundrect",
"at": [
-5.6625,
0.0
],
"rot": 0.0,
"size": [
1.475,
0.55
],
"layers": [
"F.Cu",
"F.Mask",
"F.Paste"
],
"thermal": false,
"pin": "6",
"name": "P4.3/INT2",
"type": "bidirectional",
"description": "P4.3 general-purpose I/O; alternate function INT2 = external interrupt 2 (falling-edge or low-level trigger).",
"is_pin1": false,
"source": {
"geometry": "LQFP-44_10x10mm_P0.8mm.kicad_mod",
"meaning": "page.json:component.pins",
"correspondence": "kicad: symbol pin number == pad name"
}
},
{
"pad": "7",
"kind": "smd",
"shape": "roundrect",
"at": [
-5.6625,
0.8
],
"rot": 0.0,
"size": [
1.475,
0.55
],
"layers": [
"F.Cu",
"F.Mask",
"F.Paste"
],
"thermal": false,
"pin": "7",
"name": "P3.1/TxD",
"type": "bidirectional",
"description": "P3.1 general-purpose I/O; alternate function TxD = UART1 serial data transmit output.",
"is_pin1": false,
"source": {
"geometry": "LQFP-44_10x10mm_P0.8mm.kicad_mod",
"meaning": "page.json:component.pins",
"correspondence": "kicad: symbol pin number == pad name"
}
},
{
"pad": "8",
"kind": "smd",
"shape": "roundrect",
"at": [
-5.6625,
1.6
],
"rot": 0.0,
"size": [
1.475,
0.55
],
"layers": [
"F.Cu",
"F.Mask",
"F.Paste"
],
"thermal": false,
"pin": "8",
"name": "P3.2/INT0",
"type": "bidirectional",
"description": "P3.2 general-purpose I/O; alternate function INT0 = external interrupt 0 (falling-edge or low-level trigger).",
"is_pin1": false,
"source": {
"geometry": "LQFP-44_10x10mm_P0.8mm.kicad_mod",
"meaning": "page.json:component.pins",
"correspondence": "kicad: symbol pin number == pad name"
}
},
{
"pad": "9",
"kind": "smd",
"shape": "roundrect",
"at": [
-5.6625,
2.4
],
"rot": 0.0,
"size": [
1.475,
0.55
],
"layers": [
"F.Cu",
"F.Mask",
"F.Paste"
],
"thermal": false,
"pin": "9",
"name": "P3.3/INT1",
"type": "bidirectional",
"description": "P3.3 general-purpose I/O; alternate function INT1 = external interrupt 1 (falling-edge or low-level trigger).",
"is_pin1": false,
"source": {
"geometry": "LQFP-44_10x10mm_P0.8mm.kicad_mod",
"meaning": "page.json:component.pins",
"correspondence": "kicad: symbol pin number == pad name"
}
},
{
"pad": "10",
"kind": "smd",
"shape": "roundrect",
"at": [
-5.6625,
3.2
],
"rot": 0.0,
"size": [
1.475,
0.55
],
"layers": [
"F.Cu",
"F.Mask",
"F.Paste"
],
"thermal": false,
"pin": "10",
"name": "P3.4/T0",
"type": "bidirectional",
"description": "P3.4 general-purpose I/O; alternate function T0 = Timer/Counter 0 external clock/count input.",
"is_pin1": false,
"source": {
"geometry": "LQFP-44_10x10mm_P0.8mm.kicad_mod",
"meaning": "page.json:component.pins",
"correspondence": "kicad: symbol pin number == pad name"
}
},
{
"pad": "11",
"kind": "smd",
"shape": "roundrect",
"at": [
-5.6625,
4.0
],
"rot": 0.0,
"size": [
1.475,
0.55
],
"layers": [
"F.Cu",
"F.Mask",
"F.Paste"
],
"thermal": false,
"pin": "11",
"name": "P3.5/T1",
"type": "bidirectional",
"description": "P3.5 general-purpose I/O; alternate function T1 = Timer/Counter 1 external clock/count input.",
"is_pin1": false,
"source": {
"geometry": "LQFP-44_10x10mm_P0.8mm.kicad_mod",
"meaning": "page.json:component.pins",
"correspondence": "kicad: symbol pin number == pad name"
}
},
{
"pad": "12",
"kind": "smd",
"shape": "roundrect",
"at": [
-4.0,
5.6625
],
"rot": 0.0,
"size": [
0.55,
1.475
],
"layers": [
"F.Cu",
"F.Mask",
"F.Paste"
],
"thermal": false,
"pin": "12",
"name": "P3.6/WR",
"type": "bidirectional",
"description": "P3.6 general-purpose I/O; alternate function WR = active-low external data memory write strobe (for MOVX instructions).",
"is_pin1": false,
"source": {
"geometry": "LQFP-44_10x10mm_P0.8mm.kicad_mod",
"meaning": "page.json:component.pins",
"correspondence": "kicad: symbol pin number == pad name"
}
},
{
"pad": "13",
"kind": "smd",
"shape": "roundrect",
"at": [
-3.2,
5.6625
],
"rot": 0.0,
"size": [
0.55,
1.475
],
"layers": [
"F.Cu",
"F.Mask",
"F.Paste"
],
"thermal": false,
"pin": "13",
"name": "P3.7/RD",
"type": "bidirectional",
"description": "P3.7 general-purpose I/O; alternate function RD = active-low external data memory read strobe (for MOVX instructions).",
"is_pin1": false,
"source": {
"geometry": "LQFP-44_10x10mm_P0.8mm.kicad_mod",
"meaning": "page.json:component.pins",
"correspondence": "kicad: symbol pin number == pad name"
}
},
{
"pad": "14",
"kind": "smd",
"shape": "roundrect",
"at": [
-2.4,
5.6625
],
"rot": 0.0,
"size": [
0.55,
1.475
],
"layers": [
"F.Cu",
"F.Mask",
"F.Paste"
],
"thermal": false,
"pin": "14",
"name": "XTAL2",
"type": "output",
"description": "Output of the internal inverting oscillator amplifier; connect to the second lead of the external crystal. If an external clock source is used on XTAL1, XTAL2 outputs the buffered clock and may be left floating.",
"is_pin1": false,
"source": {
"geometry": "LQFP-44_10x10mm_P0.8mm.kicad_mod",
"meaning": "page.json:component.pins",
"correspondence": "kicad: symbol pin number == pad name"
}
},
{
"pad": "15",
"kind": "smd",
"shape": "roundrect",
"at": [
-1.6,
5.6625
],
"rot": 0.0,
"size": [
0.55,
1.475
],
"layers": [
"F.Cu",
"F.Mask",
"F.Paste"
],
"thermal": false,
"pin": "15",
"name": "XTAL1",
"type": "input",
"description": "Input to the internal inverting oscillator amplifier; connect to one lead of the external crystal or directly to an external clock source.",
"is_pin1": false,
"source": {
"geometry": "LQFP-44_10x10mm_P0.8mm.kicad_mod",
"meaning": "page.json:component.pins",
"correspondence": "kicad: symbol pin number == pad name"
}
},
{
"pad": "16",
"kind": "smd",
"shape": "roundrect",
"at": [
-0.8,
5.6625
],
"rot": 0.0,
"size": [
0.55,
1.475
],
"layers": [
"F.Cu",
"F.Mask",
"F.Paste"
],
"thermal": false,
"pin": "16",
"name": "GND",
"type": "power_in",
"description": "Digital ground (0 V reference).",
"is_pin1": false,
"source": {
"geometry": "LQFP-44_10x10mm_P0.8mm.kicad_mod",
"meaning": "page.json:component.pins",
"correspondence": "kicad: symbol pin number == pad name"
}
},
{
"pad": "17",
"kind": "smd",
"shape": "roundrect",
"at": [
0.0,
5.6625
],
"rot": 0.0,
"size": [
0.55,
1.475
],
"layers": [
"F.Cu",
"F.Mask",
"F.Paste"
],
"thermal": false,
"pin": "17",
"name": "P4.0",
"type": "bidirectional",
"description": "Standard quasi-bidirectional I/O port PORT4[0]. Present only on LQFP-44/PLCC-44 packages (not on PDIP-40).",
"is_pin1": false,
"source": {
"geometry": "LQFP-44_10x10mm_P0.8mm.kicad_mod",
"meaning": "page.json:component.pins",
"correspondence": "kicad: symbol pin number == pad name"
}
},
{
"pad": "18",
"kind": "smd",
"shape": "roundrect",
"at": [
0.8,
5.6625
],
"rot": 0.0,
"size": [
0.55,
1.475
],
"layers": [
"F.Cu",
"F.Mask",
"F.Paste"
],
"thermal": false,
"pin": "18",
"name": "P2.0",
"type": "bidirectional",
"description": "P2 quasi-bidirectional I/O with internal pull-ups. Doubles as high address byte A8 when accessing external memory via MOVX @DPTR / MOVC.",
"is_pin1": false,
"source": {
"geometry": "LQFP-44_10x10mm_P0.8mm.kicad_mod",
"meaning": "page.json:component.pins",
"correspondence": "kicad: symbol pin number == pad name"
}
},
{
"pad": "19",
"kind": "smd",
"shape": "roundrect",
"at": [
1.6,
5.6625
],
"rot": 0.0,
"size": [
0.55,
1.475
],
"layers": [
"F.Cu",
"F.Mask",
"F.Paste"
],
"thermal": false,
"pin": "19",
"name": "P2.1",
"type": "bidirectional",
"description": "P2 quasi-bidirectional I/O; doubles as external address bit A9.",
"is_pin1": false,
"source": {
"geometry": "LQFP-44_10x10mm_P0.8mm.kicad_mod",
"meaning": "page.json:component.pins",
"correspondence": "kicad: symbol pin number == pad name"
}
},
{
"pad": "20",
"kind": "smd",
"shape": "roundrect",
"at": [
2.4,
5.6625
],
"rot": 0.0,
"size": [
0.55,
1.475
],
"layers": [
"F.Cu",
"F.Mask",
"F.Paste"
],
"thermal": false,
"pin": "20",
"name": "P2.2",
"type": "bidirectional",
"description": "P2 quasi-bidirectional I/O; doubles as external address bit A10.",
"is_pin1": false,
"source": {
"geometry": "LQFP-44_10x10mm_P0.8mm.kicad_mod",
"meaning": "page.json:component.pins",
"correspondence": "kicad: symbol pin number == pad name"
}
},
{
"pad": "21",
"kind": "smd",
"shape": "roundrect",
"at": [
3.2,
5.6625
],
"rot": 0.0,
"size": [
0.55,
1.475
],
"layers": [
"F.Cu",
"F.Mask",
"F.Paste"
],
"thermal": false,
"pin": "21",
"name": "P2.3",
"type": "bidirectional",
"description": "P2 quasi-bidirectional I/O; doubles as external address bit A11.",
"is_pin1": false,
"source": {
"geometry": "LQFP-44_10x10mm_P0.8mm.kicad_mod",
"meaning": "page.json:component.pins",
"correspondence": "kicad: symbol pin number == pad name"
}
},
{
"pad": "22",
"kind": "smd",
"shape": "roundrect",
"at": [
4.0,
5.6625
],
"rot": 0.0,
"size": [
0.55,
1.475
],
"layers": [
"F.Cu",
"F.Mask",
"F.Paste"
],
"thermal": false,
"pin": "22",
"name": "P2.4",
"type": "bidirectional",
"description": "P2 quasi-bidirectional I/O; doubles as external address bit A12.",
"is_pin1": false,
"source": {
"geometry": "LQFP-44_10x10mm_P0.8mm.kicad_mod",
"meaning": "page.json:component.pins",
"correspondence": "kicad: symbol pin number == pad name"
}
},
{
"pad": "23",
"kind": "smd",
"shape": "roundrect",
"at": [
5.6625,
4.0
],
"rot": 0.0,
"size": [
1.475,
0.55
],
"layers": [
"F.Cu",
"F.Mask",
"F.Paste"
],
"thermal": false,
"pin": "23",
"name": "P2.5",
"type": "bidirectional",
"description": "P2 quasi-bidirectional I/O; doubles as external address bit A13.",
"is_pin1": false,
"source": {
"geometry": "LQFP-44_10x10mm_P0.8mm.kicad_mod",
"meaning": "page.json:component.pins",
"correspondence": "kicad: symbol pin number == pad name"
}
},
{
"pad": "24",
"kind": "smd",
"shape": "roundrect",
"at": [
5.6625,
3.2
],
"rot": 0.0,
"size": [
1.475,
0.55
],
"layers": [
"F.Cu",
"F.Mask",
"F.Paste"
],
"thermal": false,
"pin": "24",
"name": "P2.6",
"type": "bidirectional",
"description": "P2 quasi-bidirectional I/O; doubles as external address bit A14.",
"is_pin1": false,
"source": {
"geometry": "LQFP-44_10x10mm_P0.8mm.kicad_mod",
"meaning": "page.json:component.pins",
"correspondence": "kicad: symbol pin number == pad name"
}
},
{
"pad": "25",
"kind": "smd",
"shape": "roundrect",
"at": [
5.6625,
2.4
],
"rot": 0.0,
"size": [
1.475,
0.55
],
"layers": [
"F.Cu",
"F.Mask",
"F.Paste"
],
"thermal": false,
"pin": "25",
"name": "P2.7",
"type": "bidirectional",
"description": "P2 quasi-bidirectional I/O; doubles as external address bit A15.",
"is_pin1": false,
"source": {
"geometry": "LQFP-44_10x10mm_P0.8mm.kicad_mod",
"meaning": "page.json:component.pins",
"correspondence": "kicad: symbol pin number == pad name"
}
},
{
"pad": "26",
"kind": "smd",
"shape": "roundrect",
"at": [
5.6625,
1.6
],
"rot": 0.0,
"size": [
1.475,
0.55
],
"layers": [
"F.Cu",
"F.Mask",
"F.Paste"
],
"thermal": false,
"pin": "26",
"name": "P4.4/PSEN",
"type": "bidirectional",
"description": "P4.4 general-purpose I/O; alternate function PSEN = Program Store Enable, active-low strobe for external program memory reads.",
"is_pin1": false,
"source": {
"geometry": "LQFP-44_10x10mm_P0.8mm.kicad_mod",
"meaning": "page.json:component.pins",
"correspondence": "kicad: symbol pin number == pad name"
}
},
{
"pad": "27",
"kind": "smd",
"shape": "roundrect",
"at": [
5.6625,
0.8
],
"rot": 0.0,
"size": [
1.475,
0.55
],
"layers": [
"F.Cu",
"F.Mask",
"F.Paste"
],
"thermal": false,
"pin": "27",
"name": "P4.5/ALE",
"type": "bidirectional",
"description": "P4.5 general-purpose I/O; alternate function ALE = Address Latch Enable output for demultiplexing the low address byte on P0 during external memory access. Also acts as PROG programming pulse input during Flash ISP.",
"is_pin1": false,
"source": {
"geometry": "LQFP-44_10x10mm_P0.8mm.kicad_mod",
"meaning": "page.json:component.pins",
"correspondence": "kicad: symbol pin number == pad name"
}
},
{
"pad": "28",
"kind": "smd",
"shape": "roundrect",
"at": [
5.6625,
0.0
],
"rot": 0.0,
"size": [
1.475,
0.55
],
"layers": [
"F.Cu",
"F.Mask",
"F.Paste"
],
"thermal": false,
"pin": "28",
"name": "P4.1",
"type": "bidirectional",
"description": "Standard quasi-bidirectional I/O port PORT4[1]. Present only on LQFP-44/PLCC-44 packages.",
"is_pin1": false,
"source": {
"geometry": "LQFP-44_10x10mm_P0.8mm.kicad_mod",
"meaning": "page.json:component.pins",
"correspondence": "kicad: symbol pin number == pad name"
}
},
{
"pad": "29",
"kind": "smd",
"shape": "roundrect",
"at": [
5.6625,
-0.8
],
"rot": 0.0,
"size": [
1.475,
0.55
],
"layers": [
"F.Cu",
"F.Mask",
"F.Paste"
],
"thermal": false,
"pin": "29",
"name": "P4.6/EA",
"type": "bidirectional",
"description": "P4.6 general-purpose I/O; alternate function EA = External Access Enable. Internally pulled up to VCC: floating or tied high starts execution from internal Flash; tied to GND starts execution from external program memory.",
"is_pin1": false,
"source": {
"geometry": "LQFP-44_10x10mm_P0.8mm.kicad_mod",
"meaning": "page.json:component.pins",
"correspondence": "kicad: symbol pin number == pad name"
}
},
{
"pad": "30",
"kind": "smd",
"shape": "roundrect",
"at": [
5.6625,
-1.6
],
"rot": 0.0,
"size": [
1.475,
0.55
],
"layers": [
"F.Cu",
"F.Mask",
"F.Paste"
],
"thermal": false,
"pin": "30",
"name": "P0.7/AD7",
"type": "bidirectional",
"description": "P0.7 8-bit quasi-bidirectional I/O (open-drain after reset; requires 4.7k-10k external pull-up when used as GPIO). Doubles as multiplexed low address/data line AD7 during external memory access (no external pull-up needed in bus mode).",
"is_pin1": false,
"source": {
"geometry": "LQFP-44_10x10mm_P0.8mm.kicad_mod",
"meaning": "page.json:component.pins",
"correspondence": "kicad: symbol pin number == pad name"
}
},
{
"pad": "31",
"kind": "smd",
"shape": "roundrect",
"at": [
5.6625,
-2.4
],
"rot": 0.0,
"size": [
1.475,
0.55
],
"layers": [
"F.Cu",
"F.Mask",
"F.Paste"
],
"thermal": false,
"pin": "31",
"name": "P0.6/AD6",
"type": "bidirectional",
"description": "P0.6 open-drain quasi-bidirectional I/O; doubles as multiplexed address/data line AD6.",
"is_pin1": false,
"source": {
"geometry": "LQFP-44_10x10mm_P0.8mm.kicad_mod",
"meaning": "page.json:component.pins",
"correspondence": "kicad: symbol pin number == pad name"
}
},
{
"pad": "32",
"kind": "smd",
"shape": "roundrect",
"at": [
5.6625,
-3.2
],
"rot": 0.0,
"size": [
1.475,
0.55
],
"layers": [
"F.Cu",
"F.Mask",
"F.Paste"
],
"thermal": false,
"pin": "32",
"name": "P0.5/AD5",
"type": "bidirectional",
"description": "P0.5 open-drain quasi-bidirectional I/O; doubles as multiplexed address/data line AD5.",
"is_pin1": false,
"source": {
"geometry": "LQFP-44_10x10mm_P0.8mm.kicad_mod",
"meaning": "page.json:component.pins",
"correspondence": "kicad: symbol pin number == pad name"
}
},
{
"pad": "33",
"kind": "smd",
"shape": "roundrect",
"at": [
5.6625,
-4.0
],
"rot": 0.0,
"size": [
1.475,
0.55
],
"layers": [
"F.Cu",
"F.Mask",
"F.Paste"
],
"thermal": false,
"pin": "33",
"name": "P0.4/AD4",
"type": "bidirectional",
"description": "P0.4 open-drain quasi-bidirectional I/O; doubles as multiplexed address/data line AD4.",
"is_pin1": false,
"source": {
"geometry": "LQFP-44_10x10mm_P0.8mm.kicad_mod",
"meaning": "page.json:component.pins",
"correspondence": "kicad: symbol pin number == pad name"
}
},
{
"pad": "34",
"kind": "smd",
"shape": "roundrect",
"at": [
4.0,
-5.6625
],
"rot": 0.0,
"size": [
0.55,
1.475
],
"layers": [
"F.Cu",
"F.Mask",
"F.Paste"
],
"thermal": false,
"pin": "34",
"name": "P0.3/AD3",
"type": "bidirectional",
"description": "P0.3 open-drain quasi-bidirectional I/O; doubles as multiplexed address/data line AD3.",
"is_pin1": false,
"source": {
"geometry": "LQFP-44_10x10mm_P0.8mm.kicad_mod",
"meaning": "page.json:component.pins",
"correspondence": "kicad: symbol pin number == pad name"
}
},
{
"pad": "35",
"kind": "smd",
"shape": "roundrect",
"at": [
3.2,
-5.6625
],
"rot": 0.0,
"size": [
0.55,
1.475
],
"layers": [
"F.Cu",
"F.Mask",
"F.Paste"
],
"thermal": false,
"pin": "35",
"name": "P0.2/AD2",
"type": "bidirectional",
"description": "P0.2 open-drain quasi-bidirectional I/O; doubles as multiplexed address/data line AD2.",
"is_pin1": false,
"source": {
"geometry": "LQFP-44_10x10mm_P0.8mm.kicad_mod",
"meaning": "page.json:component.pins",
"correspondence": "kicad: symbol pin number == pad name"
}
},
{
"pad": "36",
"kind": "smd",
"shape": "roundrect",
"at": [
2.4,
-5.6625
],
"rot": 0.0,
"size": [
0.55,
1.475
],
"layers": [
"F.Cu",
"F.Mask",
"F.Paste"
],
"thermal": false,
"pin": "36",
"name": "P0.1/AD1",
"type": "bidirectional",
"description": "P0.1 open-drain quasi-bidirectional I/O; doubles as multiplexed address/data line AD1.",
"is_pin1": false,
"source": {
"geometry": "LQFP-44_10x10mm_P0.8mm.kicad_mod",
"meaning": "page.json:component.pins",
"correspondence": "kicad: symbol pin number == pad name"
}
},
{
"pad": "37",
"kind": "smd",
"shape": "roundrect",
"at": [
1.6,
-5.6625
],
"rot": 0.0,
"size": [
0.55,
1.475
],
"layers": [
"F.Cu",
"F.Mask",
"F.Paste"
],
"thermal": false,
"pin": "37",
"name": "P0.0/AD0",
"type": "bidirectional",
"description": "P0.0 open-drain quasi-bidirectional I/O; doubles as multiplexed address/data line AD0.",
"is_pin1": false,
"source": {
"geometry": "LQFP-44_10x10mm_P0.8mm.kicad_mod",
"meaning": "page.json:component.pins",
"correspondence": "kicad: symbol pin number == pad name"
}
},
{
"pad": "38",
"kind": "smd",
"shape": "roundrect",
"at": [
0.8,
-5.6625
],
"rot": 0.0,
"size": [
0.55,
1.475
],
"layers": [
"F.Cu",
"F.Mask",
"F.Paste"
],
"thermal": false,
"pin": "38",
"name": "VCC",
"type": "power_in",
"description": "Positive supply. 5V for STC89C52RC (operating range typically 3.8-5.5 V); 3.3V for STC89LE52RC (2.0-3.6 V). Decouple with 100 nF + 10 uF close to the pin.",
"is_pin1": false,
"source": {
"geometry": "LQFP-44_10x10mm_P0.8mm.kicad_mod",
"meaning": "page.json:component.pins",
"correspondence": "kicad: symbol pin number == pad name"
}
},
{
"pad": "39",
"kind": "smd",
"shape": "roundrect",
"at": [
0.0,
-5.6625
],
"rot": 0.0,
"size": [
0.55,
1.475
],
"layers": [
"F.Cu",
"F.Mask",
"F.Paste"
],
"thermal": false,
"pin": "39",
"name": "P4.2/INT3",
"type": "bidirectional",
"description": "P4.2 general-purpose I/O; alternate function INT3 = external interrupt 3 (falling-edge or low-level trigger).",
"is_pin1": false,
"source": {
"geometry": "LQFP-44_10x10mm_P0.8mm.kicad_mod",
"meaning": "page.json:component.pins",
"correspondence": "kicad: symbol pin number == pad name"
}
},
{
"pad": "40",
"kind": "smd",
"shape": "roundrect",
"at": [
-0.8,
-5.6625
],
"rot": 0.0,
"size": [
0.55,
1.475
],
"layers": [
"F.Cu",
"F.Mask",
"F.Paste"
],
"thermal": false,
"pin": "40",
"name": "P1.0/T2",
"type": "bidirectional",
"description": "P1.0 general-purpose I/O; alternate function T2 = Timer/Counter 2 external clock/count input.",
"is_pin1": false,
"source": {
"geometry": "LQFP-44_10x10mm_P0.8mm.kicad_mod",
"meaning": "page.json:component.pins",
"correspondence": "kicad: symbol pin number == pad name"
}
},
{
"pad": "41",
"kind": "smd",
"shape": "roundrect",
"at": [
-1.6,
-5.6625
],
"rot": 0.0,
"size": [
0.55,
1.475
],
"layers": [
"F.Cu",
"F.Mask",
"F.Paste"
],
"thermal": false,
"pin": "41",
"name": "P1.1/T2EX",
"type": "bidirectional",
"description": "P1.1 general-purpose I/O; alternate function T2EX = Timer 2 capture/reload trigger control input.",
"is_pin1": false,
"source": {
"geometry": "LQFP-44_10x10mm_P0.8mm.kicad_mod",
"meaning": "page.json:component.pins",
"correspondence": "kicad: symbol pin number == pad name"
}
},
{
"pad": "42",
"kind": "smd",
"shape": "roundrect",
"at": [
-2.4,
-5.6625
],
"rot": 0.0,
"size": [
0.55,
1.475
],
"layers": [
"F.Cu",
"F.Mask",
"F.Paste"
],
"thermal": false,
"pin": "42",
"name": "P1.2",
"type": "bidirectional",
"description": "Standard quasi-bidirectional I/O port PORT1[2].",
"is_pin1": false,
"source": {
"geometry": "LQFP-44_10x10mm_P0.8mm.kicad_mod",
"meaning": "page.json:component.pins",
"correspondence": "kicad: symbol pin number == pad name"
}
},
{
"pad": "43",
"kind": "smd",
"shape": "roundrect",
"at": [
-3.2,
-5.6625
],
"rot": 0.0,
"size": [
0.55,
1.475
],
"layers": [
"F.Cu",
"F.Mask",
"F.Paste"
],
"thermal": false,
"pin": "43",
"name": "P1.3",
"type": "bidirectional",
"description": "Standard quasi-bidirectional I/O port PORT1[3].",
"is_pin1": false,
"source": {
"geometry": "LQFP-44_10x10mm_P0.8mm.kicad_mod",
"meaning": "page.json:component.pins",
"correspondence": "kicad: symbol pin number == pad name"
}
},
{
"pad": "44",
"kind": "smd",
"shape": "roundrect",
"at": [
-4.0,
-5.6625
],
"rot": 0.0,
"size": [
0.55,
1.475
],
"layers": [
"F.Cu",
"F.Mask",
"F.Paste"
],
"thermal": false,
"pin": "44",
"name": "P1.4",
"type": "bidirectional",
"description": "Standard quasi-bidirectional I/O port PORT1[4].",
"is_pin1": false,
"source": {
"geometry": "LQFP-44_10x10mm_P0.8mm.kicad_mod",
"meaning": "page.json:component.pins",
"correspondence": "kicad: symbol pin number == pad name"
}
}
]
}