component
BU97981KV-E2
Public Made by Adomby adom
ROHM Semicon LCD Drivers, LQFP-64(10x10). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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{
"schema_version": 1,
"type": "component",
"slug": "bu97981kv-e2",
"title": "BU97981KV-E2",
"brief": "ROHM Semicon LCD Drivers, LQFP-64(10x10). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
"version": "0.1.0",
"license": "CC-BY-SA-4.0",
"tags": [
"component",
"display modules - led drivers - display drivers",
"bu97981kv-e2",
"factory-2.0.0",
"extractor-text"
],
"component": {
"mpn": "BU97981KV-E2",
"manufacturer": "ROHM Semicon",
"package": "LQFP-64(10x10)",
"pin_count": 64,
"category": "Display Modules / LED Drivers / Display Drivers",
"subcategory": "LCD Drivers",
"datasheet": "https://datasheet.lcsc.com/datasheet/pdf/0fa46282c921b084595958690ad10939.pdf",
"parts": {
"symbol": "bu97981kv-e2.kicad_sym",
"footprint": "bu97981kv-e2.kicad_mod",
"model_3d": "bu97981kv-e2-hero.glb",
"model_3d_plain": "bu97981kv-e2-etched.glb",
"model_3d_step": "bu97981kv-e2-etched.step",
"model_3d_step_plain": "bu97981kv-e2.step",
"lbr": "bu97981kv-e2.lbr"
},
"distributor_links": {
"lcsc": "C2677665",
"digikey": "BU97981KV-E2TR-ND",
"mouser": "755-BU97981KV-E2"
},
"distributor_check": {
"checked_at": "2026-10-31T00:24:16Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": "BU97981KV-E2TR-ND",
"status": "found",
"lifecycle": "Active"
},
"mouser": {
"pn": "755-BU97981KV-E2",
"status": "found"
}
},
"pins": [
{
"number": "1",
"name": "CSB",
"type": "input",
"description": "Chip select input, active low: the serial interface is selected when this pin is held L."
},
{
"number": "2",
"name": "SCL",
"type": "input",
"description": "Serial data transfer clock input for the serial interface."
},
{
"number": "3",
"name": "SD",
"type": "input",
"description": "Serial input data terminal for the serial interface."
},
{
"number": "4",
"name": "VDD",
"type": "power_in",
"description": "Logic power supply; recommended operating range 1.8 V to 3.6 V (VSS = 0 V)."
},
{
"number": "5",
"name": "TEST1",
"type": "input",
"description": "Test terminal; the datasheet requires it to be connected to VSS."
},
{
"number": "6",
"name": "VSS1",
"type": "power_in",
"description": "Ground (GND) for the logic and control circuits."
},
{
"number": "7",
"name": "INHb",
"type": "input",
"description": "Display on/off select: H turns the display on, L turns it off (SEG/COM and GPO outputs go to VSS, LED drivers go Hi-Z); if unused, connect to VDD."
},
{
"number": "8",
"name": "VLCD",
"type": "power_in",
"description": "LCD drive power supply; recommended operating range 3.3 V to 5.5 V."
},
{
"number": "9",
"name": "COM0",
"type": "output",
"description": "COMMON driver output 0 for the LCD."
},
{
"number": "10",
"name": "COM1",
"type": "output",
"description": "COMMON driver output 1 for the LCD."
},
{
"number": "11",
"name": "COM2",
"type": "output",
"description": "COMMON driver output 2 for the LCD."
},
{
"number": "12",
"name": "COM3",
"type": "output",
"description": "COMMON driver output 3 for the LCD."
},
{
"number": "13",
"name": "SEG0",
"type": "output",
"description": "SEGMENT output 0 for the LCD."
},
{
"number": "14",
"name": "SEG1",
"type": "output",
"description": "SEGMENT output 1 for the LCD."
},
{
"number": "15",
"name": "SEG2",
"type": "output",
"description": "SEGMENT output 2 for the LCD."
},
{
"number": "16",
"name": "SEG3",
"type": "output",
"description": "SEGMENT output 3 for the LCD."
},
{
"number": "17",
"name": "SEG4",
"type": "output",
"description": "SEGMENT output 4 for the LCD."
},
{
"number": "18",
"name": "SEG5",
"type": "output",
"description": "SEGMENT output 5 for the LCD."
},
{
"number": "19",
"name": "SEG6",
"type": "output",
"description": "SEGMENT output 6 for the LCD."
},
{
"number": "20",
"name": "SEG7",
"type": "output",
"description": "SEGMENT output 7 for the LCD."
},
{
"number": "21",
"name": "SEG8",
"type": "output",
"description": "SEGMENT output 8 for the LCD."
},
{
"number": "22",
"name": "SEG9",
"type": "output",
"description": "SEGMENT output 9 for the LCD."
},
{
"number": "23",
"name": "SEG10",
"type": "output",
"description": "SEGMENT output 10 for the LCD."
},
{
"number": "24",
"name": "SEG11",
"type": "output",
"description": "SEGMENT output 11 for the LCD."
},
{
"number": "25",
"name": "SEG12",
"type": "output",
"description": "SEGMENT output 12 for the LCD."
},
{
"number": "26",
"name": "SEG13",
"type": "output",
"description": "SEGMENT output 13 for the LCD."
},
{
"number": "27",
"name": "SEG14",
"type": "output",
"description": "SEGMENT output 14 for the LCD."
},
{
"number": "28",
"name": "SEG15",
"type": "output",
"description": "SEGMENT output 15 for the LCD/GPO."
},
{
"number": "29",
"name": "SEG16",
"type": "output",
"description": "SEGMENT output 16 for the LCD/GPO."
},
{
"number": "30",
"name": "SEG17",
"type": "output",
"description": "SEGMENT output 17 for the LCD/GPO."
},
{
"number": "31",
"name": "SEG18",
"type": "output",
"description": "SEGMENT output 18 for the LCD/GPO."
},
{
"number": "32",
"name": "SEG19",
"type": "output",
"description": "SEGMENT output 19 for the LCD/GPO."
},
{
"number": "33",
"name": "SEG20",
"type": "output",
"description": "SEGMENT output 20 for the LCD/GPO."
},
{
"number": "34",
"name": "SEG21",
"type": "output",
"description": "SEGMENT output 21 for the LCD/GPO."
},
{
"number": "35",
"name": "SEG22",
"type": "output",
"description": "SEGMENT output 22 for the LCD/GPO."
},
{
"number": "36",
"name": "SEG23",
"type": "output",
"description": "SEGMENT output 23 for the LCD/GPO."
},
{
"number": "37",
"name": "SEG24",
"type": "output",
"description": "SEGMENT output 24 for the LCD/GPO."
},
{
"number": "38",
"name": "SEG25",
"type": "output",
"description": "SEGMENT output 25 for the LCD/GPO."
},
{
"number": "39",
"name": "SEG26",
"type": "output",
"description": "SEGMENT output 26 for the LCD/GPO."
},
{
"number": "40",
"name": "SEG27",
"type": "output",
"description": "SEGMENT output 27 for the LCD/GPO."
},
{
"number": "41",
"name": "SEG28",
"type": "output",
"description": "SEGMENT output 28 for the LCD/GPO."
},
{
"number": "42",
"name": "SEG29",
"type": "output",
"description": "SEGMENT output 29 for the LCD/GPO."
},
{
"number": "43",
"name": "SEG30",
"type": "output",
"description": "SEGMENT output 30 for the LCD/GPO."
},
{
"number": "44",
"name": "SEG31",
"type": "output",
"description": "SEGMENT output 31 for the LCD/GPO."
},
{
"number": "45",
"name": "SEG32",
"type": "output",
"description": "SEGMENT output 32 for the LCD/GPO."
},
{
"number": "46",
"name": "SEG33",
"type": "output",
"description": "SEGMENT output 33 for the LCD/GPO."
},
{
"number": "47",
"name": "SEG34",
"type": "output",
"description": "SEGMENT output 34 for the LCD/GPO."
},
{
"number": "48",
"name": "SEG35",
"type": "output",
"description": "SEGMENT output 35 for the LCD/GPO."
},
{
"number": "49",
"name": "SEG36",
"type": "output",
"description": "SEGMENT output 36 for the LCD/GPO."
},
{
"number": "50",
"name": "SEG37",
"type": "output",
"description": "SEGMENT output 37 for the LCD/GPO."
},
{
"number": "51",
"name": "SEG38",
"type": "output",
"description": "SEGMENT output 38 for the LCD/GPO."
},
{
"number": "52",
"name": "SEG39",
"type": "output",
"description": "SEGMENT output 39 for the LCD/GPO."
},
{
"number": "53",
"name": "SEG40",
"type": "output",
"description": "SEGMENT output 40 for the LCD/GPO."
},
{
"number": "54",
"name": "SEG41",
"type": "output",
"description": "SEGMENT output 41 for the LCD/GPO."
},
{
"number": "55",
"name": "SEG42",
"type": "output",
"description": "SEGMENT output 42 for the LCD/GPO."
},
{
"number": "56",
"name": "SEG43",
"type": "output",
"description": "SEGMENT output 43 for the LCD/GPO."
},
{
"number": "57",
"name": "SEG44",
"type": "output",
"description": "SEGMENT output 44 for the LCD/GPO."
},
{
"number": "58",
"name": "SEG45",
"type": "output",
"description": "SEGMENT output 45 for the LCD/GPO."
},
{
"number": "59",
"name": "SEG46",
"type": "output",
"description": "SEGMENT output 46 for the LCD/LED driver."
},
{
"number": "60",
"name": "SEG47",
"type": "output",
"description": "SEGMENT output 47 for the LCD/LED driver."
},
{
"number": "61",
"name": "SEG48",
"type": "output",
"description": "SEGMENT output 48 for the LCD/LED driver."
},
{
"number": "62",
"name": "VSS2",
"type": "power_in",
"description": "GND for SEG46-48 and the LED driver."
},
{
"number": "63",
"name": "PWMOUT",
"type": "output",
"description": "PWM output for the LED2 group."
},
{
"number": "64",
"name": "CLKIN",
"type": "input",
"description": "External clock input for display/PWM (selectable); if unused, connect to VSS or leave open, and Hi-Z input is supported in internal clock mode."
}
],
"provenance": {
"extractor": "extract_pins 0.3",
"factory_chain": {
"factory": "2.0.0",
"extractor": "extract_pins 0.3",
"primary_model": "claude-haiku-5-5",
"primary_mode": "text",
"consensus_model": "claude-sonnet-5-5",
"consensus": "agreed",
"guards": "pin_guards 0.1: passed",
"guard_notes": [
"extractor flagged: The user's package hint says LQFP-64(10x10), but the datasheet names this package VQFP64 (ordering t; Table 1 (p.2) gives pin numbers as ranges (e.g. SEG0 to 14 = pins 13-27, SEG15 to 45 = pins 28-58, S; Figure 3 pin configuration text for BU97981KV is garbled in extraction, so the pin positions could n",
"2/64 pins cited to the wrong page (name found elsewhere): ['57:SEG44@p2', '60:SEG47@p2']"
],
"pages_sent": 9,
"cost_usd": 0.0752,
"at": "2026-10-31T00:24:02"
},
"datasheet": {
"url": "https://datasheet.lcsc.com/datasheet/pdf/0fa46282c921b084595958690ad10939.pdf",
"pages": 49,
"sha256": "25d5fc4e47d0a275",
"source_tier": "mfr"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 64,
"described": 64,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
"viewers": {
"symbol": "viewers/symbol.html",
"footprint": "viewers/footprint.html"
},
"models_3d": [
{
"file": "bu97981kv-e2.step",
"role": "plain",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
12,
12,
1.5
],
"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "b0c827bc5c05552175d28affe44a5bd2ab45c9c36efff6ff07a74cc449b13db4",
"checked": "2026-10-31",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "bu97981kv-e2-etched.step",
"role": "eda",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
12,
12,
1.5
],
"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "7c8722a904a1551d658af3044e65907726c6855d69be1dc9b545dcaded05cbf8",
"checked": "2026-10-31",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
}
]
},
"metadata": {
"specs": {
"Manufacturer": "ROHM Semicon",
"Package": "LQFP-64(10x10)",
"Category": "Display Modules / LED Drivers / Display Drivers",
"Pins": "64"
},
"characteristics": {
"version": 1,
"source": "datasheet",
"datasheet_sha256": "25d5fc4e47d0a2753b68d56997266293f321ff8e8d6955252ff75d745c720462",
"rows": [
{
"name": "Hysteresis Width",
"symbol": "VH",
"kind": "electrical",
"unit": "V",
"min": null,
"typ": 0.2,
"max": null,
"conditions": "SCL, INHb, VDD=3.3V, Ta=25°C",
"source_page": 6,
"source": "datasheet"
},
{
"name": "\"H\" Level Input Current",
"symbol": "IIH1",
"kind": "electrical",
"unit": "µA",
"min": null,
"typ": null,
"max": 5,
"conditions": "SD, SCL, CSB, CLKIN, INHb, VI=3.6V",
"source_page": 6,
"source": "datasheet"
},
{
"name": "\"L\" Level Input Current",
"symbol": "IIL1",
"kind": "electrical",
"unit": "µA",
"min": -5,
"typ": null,
"max": null,
"conditions": "SD, SCL, CSB, CLKIN, INHb, TEST1(Note4), VI=0V",
"source_page": 6,
"source": "datasheet"
},
{
"name": "\"L\" Level Output Voltage",
"symbol": "VOL1",
"kind": "electrical",
"unit": "V",
"min": null,
"typ": null,
"max": 0.4,
"conditions": "Iload= 50µA, VLCD=5.0V, SEG0 to SEG48",
"source_page": 6,
"source": "datasheet"
},
{
"name": "\"L\" Level Output Voltage",
"symbol": "VOL3",
"kind": "electrical",
"unit": "V",
"min": null,
"typ": null,
"max": 0.5,
"conditions": "Iload=1mA, VLCD=5.0V, SEG15 to SEG45 (GPOmode), PWMOUT",
"source_page": 6,
"source": "datasheet"
},
{
"name": "\"L\" Level Output Voltage",
"symbol": "VOL4",
"kind": "electrical",
"unit": "V",
"min": null,
"typ": 0.11,
"max": 0.5,
"conditions": "Iload=20mA, VLCD=5.0V, SEG46 to 48 (LED drive mode)",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Current Consumption",
"symbol": "IstVDD",
"kind": "electrical",
"unit": "µA",
"min": null,
"typ": 3,
"max": 10,
"conditions": "Input terminal ALL'L', Display off, Oscillation off",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Current Consumption",
"symbol": "IstVLCD",
"kind": "electrical",
"unit": "µA",
"min": null,
"typ": 0.5,
"max": 5,
"conditions": "Input terminal ALL'L', Display off, Oscillation off",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Current Consumption",
"symbol": "IVDD1",
"kind": "electrical",
"unit": "µA",
"min": null,
"typ": 8,
"max": 15,
"conditions": "VDD=3.3V, Ta=25°C, 1/3bias, fFR=64Hz, PWM generate off, All output pin open",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Current Consumption",
"symbol": "IVDD2",
"kind": "electrical",
"unit": "µA",
"min": null,
"typ": 90,
"max": 130,
"conditions": "VDD=3.3V, Ta=25°C, 1/3bias, fFR=64Hz, PWM Frequency=500Hz setting, All output pin open",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Current Consumption",
"symbol": "IVLCD1",
"kind": "electrical",
"unit": "µA",
"min": null,
"typ": 10,
"max": 15,
"conditions": "VLCD=5.0V, Ta=25°C, 1/3bias, fFR=64Hz, Unused Integrated regulator, LED generate off, All output pin open",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Current Consumption",
"symbol": "IVLCD2",
"kind": "electrical",
"unit": "µA",
"min": null,
"typ": 25,
"max": 40,
"conditions": "VLCD=5.0V, Ta=25°C, 1/3bias, fFR=64Hz, Used Integrated regulator, LED generate off, All output pin open",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Current Consumption",
"symbol": "IVLCD3",
"kind": "electrical",
"unit": "µA",
"min": null,
"typ": 30,
"max": 48,
"conditions": "VLCD=5.0V, Ta=25°C, 1/3bias, fFR=64Hz, Used Integrated regulator, PWM Frequency=500Hz setting, All output pin open",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Output Voltage 1",
"symbol": "Vreg1",
"kind": "electrical",
"unit": "V",
"min": 4.35,
"typ": 4.5,
"max": 4.65,
"conditions": "4.5V setting (VLCD=5.5V, Ta=-30°C to 75°C) (Note1)",
"source_page": 8,
"source": "datasheet"
},
{
"name": "Output Voltage 2",
"symbol": "Vreg2",
"kind": "electrical",
"unit": "V",
"min": 4.42,
"typ": 4.5,
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