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.
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page.json+332−8@@ -1,13 +1,342 @@ {+ "schema_version": 1,+ "type": "component", "slug": "stc89c52rc-40i-lqfp44",+ "title": "STC89C52RC-40I-LQFP44",+ "brief": "STC Micro Microcontrollers (MCU/MPU/SOC), LQFP-44(10x10). Datasheet-verified pinout, KiCad symbol/footprint/3D.", "version": "0.1.0",- "type": "component",- "description": "STC Micro Microcontrollers (MCU/MPU/SOC), LQFP-44(10x10). Datasheet-verified pinout, KiCad symbol/footprint/3D.",+ "license": "CC-BY-SA-4.0", "tags": [ "component", "mcu", "stc89c52rc-40i-lqfp44" ],+ "component": {+ "mpn": "STC89C52RC-40I-LQFP44",+ "manufacturer": "STC Micro",+ "package": "LQFP-44(10x10)",+ "pin_count": 44,+ "category": "MCU",+ "subcategory": "Microcontrollers (MCU/MPU/SOC)",+ "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/5a17a78212f2e06d8b3a80c8c6ebc011.pdf",+ "parts": {+ "symbol": "stc89c52rc-40i-lqfp44.kicad_sym",+ "footprint": "stc89c52rc-40i-lqfp44.kicad_mod",+ "model_3d": "stc89c52rc-40i-lqfp44.glb",+ "model_3d_step": "stc89c52rc-40i-lqfp44.step",+ "lbr": "stc89c52rc-40i-lqfp44.lbr"+ },+ "distributor_links": {},+ "pins": [+ {+ "number": "1",+ "name": "P1.5",+ "type": "bidirectional",+ "description": "Standard quasi-bidirectional I/O port PORT1[5]. Internal weak pull-up; drives/reads CMOS level."+ },+ {+ "number": "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."+ },+ {+ "number": "3",+ "name": "P1.7",+ "type": "bidirectional",+ "description": "Standard quasi-bidirectional I/O port PORT1[7]."+ },+ {+ "number": "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."+ },+ {+ "number": "5",+ "name": "P3.0/RxD",+ "type": "bidirectional",+ "description": "P3.0 general-purpose I/O; alternate function RxD = UART1 serial data receive input."+ },+ {+ "number": "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)."+ },+ {+ "number": "7",+ "name": "P3.1/TxD",+ "type": "bidirectional",+ "description": "P3.1 general-purpose I/O; alternate function TxD = UART1 serial data transmit output."+ },+ {+ "number": "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)."+ },+ {+ "number": "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)."+ },+ {+ "number": "10",+ "name": "P3.4/T0",+ "type": "bidirectional",+ "description": "P3.4 general-purpose I/O; alternate function T0 = Timer/Counter 0 external clock/count input."+ },+ {+ "number": "11",+ "name": "P3.5/T1",+ "type": "bidirectional",+ "description": "P3.5 general-purpose I/O; alternate function T1 = Timer/Counter 1 external clock/count input."+ },+ {+ "number": "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)."+ },+ {+ "number": "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)."+ },+ {+ "number": "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."+ },+ {+ "number": "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."+ },+ {+ "number": "16",+ "name": "GND",+ "type": "power_in",+ "description": "Digital ground (0 V reference)."+ },+ {+ "number": "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)."+ },+ {+ "number": "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."+ },+ {+ "number": "19",+ "name": "P2.1",+ "type": "bidirectional",+ "description": "P2 quasi-bidirectional I/O; doubles as external address bit A9."+ },+ {+ "number": "20",+ "name": "P2.2",+ "type": "bidirectional",+ "description": "P2 quasi-bidirectional I/O; doubles as external address bit A10."+ },+ {+ "number": "21",+ "name": "P2.3",+ "type": "bidirectional",+ "description": "P2 quasi-bidirectional I/O; doubles as external address bit A11."+ },+ {+ "number": "22",+ "name": "P2.4",+ "type": "bidirectional",+ "description": "P2 quasi-bidirectional I/O; doubles as external address bit A12."+ },+ {+ "number": "23",+ "name": "P2.5",+ "type": "bidirectional",+ "description": "P2 quasi-bidirectional I/O; doubles as external address bit A13."+ },+ {+ "number": "24",+ "name": "P2.6",+ "type": "bidirectional",+ "description": "P2 quasi-bidirectional I/O; doubles as external address bit A14."+ },+ {+ "number": "25",+ "name": "P2.7",+ "type": "bidirectional",+ "description": "P2 quasi-bidirectional I/O; doubles as external address bit A15."+ },+ {+ "number": "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."+ },+ {+ "number": "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."+ },+ {+ "number": "28",+ "name": "P4.1",+ "type": "bidirectional",+ "description": "Standard quasi-bidirectional I/O port PORT4[1]. Present only on LQFP-44/PLCC-44 packages."+ },+ {+ "number": "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."+ },+ {+ "number": "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)."+ },+ {+ "number": "31",+ "name": "P0.6/AD6",+ "type": "bidirectional",+ "description": "P0.6 open-drain quasi-bidirectional I/O; doubles as multiplexed address/data line AD6."+ },+ {+ "number": "32",+ "name": "P0.5/AD5",+ "type": "bidirectional",+ "description": "P0.5 open-drain quasi-bidirectional I/O; doubles as multiplexed address/data line AD5."+ },+ {+ "number": "33",+ "name": "P0.4/AD4",+ "type": "bidirectional",+ "description": "P0.4 open-drain quasi-bidirectional I/O; doubles as multiplexed address/data line AD4."+ },+ {+ "number": "34",+ "name": "P0.3/AD3",+ "type": "bidirectional",+ "description": "P0.3 open-drain quasi-bidirectional I/O; doubles as multiplexed address/data line AD3."+ },+ {+ "number": "35",+ "name": "P0.2/AD2",+ "type": "bidirectional",+ "description": "P0.2 open-drain quasi-bidirectional I/O; doubles as multiplexed address/data line AD2."+ },+ {+ "number": "36",+ "name": "P0.1/AD1",+ "type": "bidirectional",+ "description": "P0.1 open-drain quasi-bidirectional I/O; doubles as multiplexed address/data line AD1."+ },+ {+ "number": "37",+ "name": "P0.0/AD0",+ "type": "bidirectional",+ "description": "P0.0 open-drain quasi-bidirectional I/O; doubles as multiplexed address/data line AD0."+ },+ {+ "number": "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."+ },+ {+ "number": "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)."+ },+ {+ "number": "40",+ "name": "P1.0/T2",+ "type": "bidirectional",+ "description": "P1.0 general-purpose I/O; alternate function T2 = Timer/Counter 2 external clock/count input."+ },+ {+ "number": "41",+ "name": "P1.1/T2EX",+ "type": "bidirectional",+ "description": "P1.1 general-purpose I/O; alternate function T2EX = Timer 2 capture/reload trigger control input."+ },+ {+ "number": "42",+ "name": "P1.2",+ "type": "bidirectional",+ "description": "Standard quasi-bidirectional I/O port PORT1[2]."+ },+ {+ "number": "43",+ "name": "P1.3",+ "type": "bidirectional",+ "description": "Standard quasi-bidirectional I/O port PORT1[3]."+ },+ {+ "number": "44",+ "name": "P1.4",+ "type": "bidirectional",+ "description": "Standard quasi-bidirectional I/O port PORT1[4]."+ }+ ],+ "provenance": {+ "extractor": "ds2sf",+ "datasheet": {+ "url": "https://datasheet.lcsc.com/datasheet/pdf/5a17a78212f2e06d8b3a80c8c6ebc011.pdf",+ "pages": 1691,+ "sha256": "fac7be430b93e2dd",+ "source_tier": "lcsc"+ },+ "cad": "KiCad official (CC-BY-SA 4.0)",+ "pins": {+ "total": 44,+ "described": 44,+ "cites_pages": true,+ "refuses_to_fabricate": true+ }+ },+ "viewers": {+ "symbol": "viewers/symbol.html",+ "footprint": "viewers/footprint.html"+ }+ },+ "metadata": {+ "specs": {+ "Manufacturer": "STC Micro",+ "Package": "LQFP-44(10x10)",+ "Category": "MCU",+ "Pins": "44"+ }+ },+ "sections": [+ "hero",+ "viewers",+ "readme",+ "breadcrumbs",+ "info"+ ],+ "discovery_triggers": [+ "stc89c52rc-40i-lqfp44"+ ],+ "discovery_pitch": "STC89C52RC-40I-LQFP44 (STC Micro) component page with datasheet-verified CAD.",+ "author": {+ "name": "Ray",+ "email": "[email protected]"+ }, "dependencies": {}, "hero": { "type": "image",@@ -25,10 +354,5 @@ "docs/stc89c52rc-40i-lqfp44-datasheet.pdf", "viewers/symbol.html", "viewers/footprint.html"- ],- "visibility": "public",- "author": {- "name": "Ray",- "email": "[email protected]"- }+ ] }