component
MPC89E54AF
Public Made by Adomby adom
Megawin Tech Microcontroller Units (MCUs/MPUs/SOCs), PQFP-44(10x10). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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"title": "MPC89E54AF",
"brief": "Megawin Tech Microcontroller Units (MCUs/MPUs/SOCs), PQFP-44(10x10). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
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"manufacturer": "Megawin Tech",
"package": "PQFP-44(10x10)",
"pin_count": 44,
"category": "Embedded Processors & Controllers",
"subcategory": "Microcontroller Units (MCUs/MPUs/SOCs)",
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"checked_at": "2026-10-24T03:09:39Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": null,
"status": "no match"
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"mouser": {
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"pins": [
{
"number": "1",
"name": "P1.5",
"type": "bidirectional",
"description": "Port 1 bidirectional I/O with internal pull-up; writing 1 pulls the pin high so it can be used as an input."
},
{
"number": "2",
"name": "P1.6",
"type": "bidirectional",
"description": "Port 1 bidirectional I/O with internal pull-up; writing 1 pulls the pin high so it can be used as an input."
},
{
"number": "3",
"name": "P1.7",
"type": "bidirectional",
"description": "Port 1 bidirectional I/O with internal pull-up; writing 1 pulls the pin high so it can be used as an input."
},
{
"number": "4",
"name": "RESET",
"type": "input",
"description": "A high level lasting more than 2 machine cycles resets the chip; has an internal pull-down resistor."
},
{
"number": "5",
"name": "P3.0(RXD)",
"type": "bidirectional",
"description": "Port 3 bidirectional I/O with internal pull-up; alternate function RXD serial input."
},
{
"number": "6",
"name": "P4.3(/INT2)",
"type": "bidirectional",
"description": "Port 4 bidirectional I/O with pull-up (PLCC-44/PQFP-44 only); alternate function external interrupt /INT2 input."
},
{
"number": "7",
"name": "P3.1(TXD)",
"type": "bidirectional",
"description": "Port 3 bidirectional I/O with internal pull-up; alternate function TXD serial output."
},
{
"number": "8",
"name": "P3.2(INT0)",
"type": "bidirectional",
"description": "Port 3 bidirectional I/O with internal pull-up; alternate function external interrupt 0 input."
},
{
"number": "9",
"name": "P3.3(INT1)",
"type": "bidirectional",
"description": "Port 3 bidirectional I/O with internal pull-up; alternate function external interrupt 1 input."
},
{
"number": "10",
"name": "P3.4(T0)",
"type": "bidirectional",
"description": "Port 3 bidirectional I/O with internal pull-up; alternate function Timer 0 external input."
},
{
"number": "11",
"name": "P3.5(T1)",
"type": "bidirectional",
"description": "Port 3 bidirectional I/O with internal pull-up; alternate function Timer 1 external input."
},
{
"number": "12",
"name": "P3.6(/WR)",
"type": "bidirectional",
"description": "Port 3 bidirectional I/O with internal pull-up; alternate function external data memory write strobe."
},
{
"number": "13",
"name": "P3.7(/RD)",
"type": "bidirectional",
"description": "Port 3 bidirectional I/O with internal pull-up; alternate function external data memory read strobe."
},
{
"number": "14",
"name": "XTAL2",
"type": "output",
"description": "Crystal oscillator output."
},
{
"number": "15",
"name": "XTAL1",
"type": "input",
"description": "Crystal oscillator input."
},
{
"number": "16",
"name": "VSS",
"type": "power_in",
"description": "Ground."
},
{
"number": "17",
"name": "P4.0",
"type": "bidirectional",
"description": "Port 4 bidirectional I/O with pull-up, available only on PLCC-44 and PQFP-44 packages."
},
{
"number": "18",
"name": "P2.0(A8)",
"type": "bidirectional",
"description": "Port 2 bidirectional I/O with internal pull-up; outputs high address byte bit 0 when accessing external program/data memory."
},
{
"number": "19",
"name": "P2.1(A9)",
"type": "bidirectional",
"description": "Port 2 bidirectional I/O with internal pull-up; outputs high address byte bit 1 when accessing external program/data memory."
},
{
"number": "20",
"name": "P2.2(A10)",
"type": "bidirectional",
"description": "Port 2 bidirectional I/O with internal pull-up; outputs high address byte bit 2 when accessing external program/data memory."
},
{
"number": "21",
"name": "P2.3(A11)",
"type": "bidirectional",
"description": "Port 2 bidirectional I/O with internal pull-up; outputs high address byte bit 3 when accessing external program/data memory."
},
{
"number": "22",
"name": "P2.4(A12)",
"type": "bidirectional",
"description": "Port 2 bidirectional I/O with internal pull-up; outputs high address byte bit 4 when accessing external program/data memory."
},
{
"number": "23",
"name": "P2.5(A13)",
"type": "bidirectional",
"description": "Port 2 bidirectional I/O with internal pull-up; outputs high address byte bit 5 when accessing external program/data memory."
},
{
"number": "24",
"name": "P2.6(A14)",
"type": "bidirectional",
"description": "Port 2 bidirectional I/O with internal pull-up; outputs high address byte bit 6 when accessing external program/data memory."
},
{
"number": "25",
"name": "P2.7(A15)",
"type": "bidirectional",
"description": "Port 2 bidirectional I/O with internal pull-up; outputs high address byte bit 7 when accessing external program/data memory."
},
{
"number": "26",
"name": "/PSEN",
"type": "output",
"description": "Program store enable, activated twice per machine cycle when executing external program code and inactive for external data access or internal program access."
},
{
"number": "27",
"name": "ALE",
"type": "output",
"description": "Outputs a pulse to latch the low address byte when accessing external memory."
},
{
"number": "28",
"name": "P4.1",
"type": "bidirectional",
"description": "Port 4 bidirectional I/O with pull-up, available only on PLCC-44 and PQFP-44 packages."
},
{
"number": "29",
"name": "/EA",
"type": "input",
"description": "External access enable; must be externally held low to access all external program memory, and when high internal program runs unless the PC exceeds the on-chip FLASH address."
},
{
"number": "30",
"name": "P0.7(AD7)",
"type": "bidirectional",
"description": "Port 0 open-drain bidirectional I/O that becomes high-impedance input when 1 is written; multiplexed address/data bit 7 for external memory."
},
{
"number": "31",
"name": "P0.6(AD6)",
"type": "bidirectional",
"description": "Port 0 open-drain bidirectional I/O that becomes high-impedance input when 1 is written; multiplexed address/data bit 6 for external memory."
},
{
"number": "32",
"name": "P0.5(AD5)",
"type": "bidirectional",
"description": "Port 0 open-drain bidirectional I/O that becomes high-impedance input when 1 is written; multiplexed address/data bit 5 for external memory."
},
{
"number": "33",
"name": "P0.4(AD4)",
"type": "bidirectional",
"description": "Port 0 open-drain bidirectional I/O that becomes high-impedance input when 1 is written; multiplexed address/data bit 4 for external memory."
},
{
"number": "34",
"name": "P0.3(AD3)",
"type": "bidirectional",
"description": "Port 0 open-drain bidirectional I/O that becomes high-impedance input when 1 is written; multiplexed address/data bit 3 for external memory."
},
{
"number": "35",
"name": "P0.2(AD2)",
"type": "bidirectional",
"description": "Port 0 open-drain bidirectional I/O that becomes high-impedance input when 1 is written; multiplexed address/data bit 2 for external memory."
},
{
"number": "36",
"name": "P0.1(AD1)",
"type": "bidirectional",
"description": "Port 0 open-drain bidirectional I/O that becomes high-impedance input when 1 is written; multiplexed address/data bit 1 for external memory."
},
{
"number": "37",
"name": "P0.0(AD0)",
"type": "bidirectional",
"description": "Port 0 open-drain bidirectional I/O that becomes high-impedance input when 1 is written; multiplexed address/data bit 0 for external memory."
},
{
"number": "38",
"name": "VDD",
"type": "power_in",
"description": "Power supply."
},
{
"number": "39",
"name": "P4.2(/INT3)",
"type": "bidirectional",
"description": "Port 4 bidirectional I/O with pull-up (PLCC-44/PQFP-44 only); alternate function external interrupt /INT3 input."
},
{
"number": "40",
"name": "P1.0(T2)",
"type": "bidirectional",
"description": "Port 1 bidirectional I/O with internal pull-up; alternate function Timer 2 external count input or clock output."
},
{
"number": "41",
"name": "P1.1(T2EX)",
"type": "bidirectional",
"description": "Port 1 bidirectional I/O with internal pull-up; alternate function Timer 2 capture/reload (interrupt control) trigger input."
},
{
"number": "42",
"name": "P1.2",
"type": "bidirectional",
"description": "Port 1 bidirectional I/O with internal pull-up; writing 1 pulls the pin high so it can be used as an input."
},
{
"number": "43",
"name": "P1.3",
"type": "bidirectional",
"description": "Port 1 bidirectional I/O with internal pull-up; writing 1 pulls the pin high so it can be used as an input."
},
{
"number": "44",
"name": "P1.4",
"type": "bidirectional",
"description": "Port 1 bidirectional I/O with internal pull-up; writing 1 pulls the pin high so it can be used as an input."
}
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"metadata": {
"specs": {
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"Package": "PQFP-44(10x10)",
"Category": "Embedded Processors & Controllers",
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{
"name": "Operating supply voltage",
"symbol": "VCC",
"kind": "recommended_operating",
"unit": "V",
"min": 4.5,
"typ": null,
"max": 5.5,
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"min": 3,
"typ": null,
"max": null,
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"source_page": 45,
"source": "datasheet"
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{
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{
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"kind": "electrical",
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"min": 150,
"typ": 220,
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{
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"min": 14,
"typ": 20,
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{
"name": "Logic 0 input current (P1,2,3,4)",
"symbol": "IIL",
"kind": "electrical",
"unit": "uA",
"min": null,
"typ": 18,
"max": 50,
"conditions": "Vpin=0V",
"source_page": 45,
"source": "datasheet"
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{
"name": "Logic 1 to 0 transition current (P1,2,3,4)",
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"unit": "uA",
"min": null,
"typ": 270,
"max": 600,
"conditions": "Vpin=2.0V",
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{
"name": "Operating current @20MHz",
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"min": null,
"typ": null,
"max": 30,
"conditions": "Vcc=5.0V",
"source_page": 45,
"source": "datasheet"
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{
"name": "IDLE mode current @20MHz",
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"unit": "mA",
"min": null,
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{
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"min": null,
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{
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"min": 45,
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"min": -55,
"typ": null,
"max": 125,
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"source_page": 44,
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{
"name": "Storage temperature",
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"kind": "absolute_maximum",
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"min": -65,
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{
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"min": -0.5,
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{
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{
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