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ATM90E26-YU-R
Public Made by Adomby adom
Microchip Tech Energy Metering, SSOP-28-208mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+64@@ -0,0 +1,64 @@+# ATM90E26-YU-R++**Microchip Tech** · Energy Metering · SSOP-28-208mil++ATM90E26-YU-R from Microchip Tech, in a SSOP-28-208mil. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.++## Pinout++| Pin | Name | Type | Function |+|---|---|---|---|+| 1 | MMD1 | input | Metering mode configuration bit 1; used with MMD0 to select anti-tampering mode (00), L line mode (01), L+N mode (10), or flexible mode (11). |+| 2 | DGND | power_in | Digital ground reference for digital circuitry. |+| 3 | DVDD | power_in | Digital power supply 2.8V to 3.6V; metering accuracy guaranteed within 3.0V to 3.6V; decouple with 10μF electrolytic and 0.1μF capacitor. |+| 4 | Reset | input | Active-low hardware reset input; apply minimum 200μs pulse width and connect 0.1μF filter capacitor to ground. |+| 5 | AVDD | power_in | Analog power supply 2.8V to 3.6V; metering accuracy guaranteed within 3.0V to 3.6V; decouple with 0.1μF capacitor. |+| 6 | AGND | power_in | Analog ground reference for analog circuitry. |+| 7 | I2P | input | N line current positive input for differential measurement; input range 120μVrms to 600mVrms when N line gain is 1. |+| 8 | I2N | input | N line current negative input for differential measurement; input range 120μVrms to 600mVrms when N line gain is 1. |+| 9 | Resv_Low | input | Reserved input pin; connect to ground for normal operation. |+| 10 | I1P | input | L line current positive input for differential measurement; input range 5μVrms to 25mVrms when L line gain is 24. |+| 11 | I1N | input | L line current negative input for differential measurement; input range 5μVrms to 25mVrms when L line gain is 24. |+| 12 | USEL | input | UART/SPI interface selection; high selects UART interface, low selects SPI interface; must not change after reset. |+| 13 | Vref | power_in | Reference voltage output at 1.26V nominal; decouple with 1μF and 1nF capacitors in parallel to ground. |+| 14 | AGND | power_in | Analog ground reference for analog circuitry. |+| 15 | VN | input | Voltage measurement negative input for differential measurement; input range 120μVrms to 600mVrms. |+| 16 | VP | input | Voltage measurement positive input for differential measurement; input range 120μVrms to 600mVrms. |+| 17 | WarnOut | output | Fatal error warning output; asserted low when metering parameter calibration error or voltage sag is detected. |+| 18 | CF1 | output | Active energy pulse output; generates pulses proportional to active energy with width 80ms (if period ≥160ms) or 0.5T (if period <160ms). |+| 19 | CF2 | output | Reactive energy pulse output; generates pulses proportional to reactive energy with width 80ms (if period ≥160ms) or 0.5T (if period <160ms). |+| 20 | IRQ | output | Interrupt output; asserted low when one or more events in the SysStatus register (01H) occur. |+| 21 | ZX | output | Voltage zero-crossing detection output; asserts 5ms high pulse when voltage signal crosses zero. |+| 22 | OSCI | input | External crystal oscillator input for 8.192MHz crystal; connect 12pF capacitor from pin to ground. |+| 23 | OSCO | output | External crystal oscillator output for 8.192MHz crystal; connect 12pF capacitor from pin to ground. |+| 24 | CS | input | Chip select (active low) for SPI interface; must be driven low for entire read/write operation in 4-wire mode or low all the time in 3-wire mode. |+| 25 | SCLK | input | Serial clock for SPI interface; data on SDI shifted into chip on rising edge, data on SDO shifted out on falling edge. |+| 26 | SDO/UTX | tri_state | Serial data output for SPI (output data on falling edge of SCLK) or UART transmit data; open-drain output requiring 10kΩ pull-up resistor to VDD. |+| 27 | SDI/URX | input | Serial data input for SPI (input address and data on rising edge of SCLK) or UART receive data; 5V compatible input. |+| 28 | MMD0 | input | Metering mode configuration bit 0; used with MMD1 to select anti-tampering mode (00), L line mode (01), L+N mode (10), or flexible mode (11). |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Microchip Tech |+| Package | SSOP-28-208mil |+| Category | Data Acquisition |+| Pins | 28 |++## CAD (KiCad official)++- Symbol: `ATM90E26-YU-R`+- Footprint: `Package_SO:SSOP-28_5.3x10.2mm_P0.65mm`+- 3D model: SSOP-28-208mil (KiCad packages3D, STEP)+- 3D model files: `atm90e26-yu-r-etched.step` / `atm90e26-yu-r-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `atm90e26-yu-r.step` / `atm90e26-yu-r.glb` are the bare package body.++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Microchip Tech datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588940826353274880) (60 pp, sha256 `2f88e1a16337c82a`, retrieved 2026-09-22, tier: lcsc)+- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.2`, primary `claude-haiku-4-5-20251001` (text), consensus `claude-sonnet-4-6` (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.+- **CAD:** KiCad official libraries (CC-BY-SA 4.0).++[Datasheet PDF](docs/atm90e26-yu-r-datasheet.pdf)
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Datasheet-verified pinout, KiCad symbol/footprint/3D.",+ "tags": [+ "component",+ "data acquisition",+ "atm90e26-yu-r",+ "factory-2.0.0",+ "extractor-text"+ ],+ "dependencies": {},+ "hero": {+ "type": "image",+ "path": "docs/hero.png"+ },+ "files": [+ "page.json",+ "README.md",+ "atm90e26-yu-r.kicad_sym",+ "atm90e26-yu-r.kicad_mod",+ "atm90e26-yu-r.glb",+ "atm90e26-yu-r.step",+ "atm90e26-yu-r.lbr",+ "docs/hero.png",+ "docs/atm90e26-yu-r-datasheet.pdf",+ "viewers/symbol.html",+ "viewers/footprint.html"+ ],+ "component": {+ "mpn": "ATM90E26-YU-R",+ "manufacturer": "Microchip Tech",+ "package": "SSOP-28-208mil",+ "pin_count": 28,+ "category": "Data Acquisition",+ "subcategory": "Energy Metering",+ "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588940826353274880",+ "parts": {+ "symbol": "atm90e26-yu-r.kicad_sym",+ "footprint": "atm90e26-yu-r.kicad_mod",+ "model_3d": "atm90e26-yu-r-etched.glb",+ "model_3d_plain": "atm90e26-yu-r.glb",+ "model_3d_step": "atm90e26-yu-r-etched.step",+ "model_3d_step_plain": "atm90e26-yu-r.step",+ "lbr": "atm90e26-yu-r.lbr"+ },+ "distributor_links": {+ "lcsc": "C616398"+ },+ "pins": [+ {+ "number": "1",+ "name": "MMD1",+ "type": "input",+ "description": "Metering mode configuration bit 1; used with MMD0 to select anti-tampering mode (00), L line mode (01), L+N mode (10), or flexible mode (11)."+ },+ {+ "number": "2",+ "name": "DGND",+ "type": "power_in",+ "description": "Digital ground reference for digital circuitry."+ },+ {+ "number": "3",+ "name": "DVDD",+ "type": "power_in",+ "description": "Digital power supply 2.8V to 3.6V; metering accuracy guaranteed within 3.0V to 3.6V; decouple with 10μF electrolytic and 0.1μF capacitor."+ },+ {+ "number": "4",+ "name": "Reset",+ "type": "input",+ "description": "Active-low hardware reset input; apply minimum 200μs pulse width and connect 0.1μF filter capacitor to ground."+ },+ {+ "number": "5",+ "name": "AVDD",+ "type": "power_in",+ "description": "Analog power supply 2.8V to 3.6V; metering accuracy guaranteed within 3.0V to 3.6V; decouple with 0.1μF capacitor."+ },+ {+ "number": "6",+ "name": "AGND",+ "type": "power_in",+ "description": "Analog ground reference for analog circuitry."+ },+ {+ "number": "7",+ "name": "I2P",+ "type": "input",+ "description": "N line current positive input for differential measurement; input range 120μVrms to 600mVrms when N line gain is 1."+ },+ {+ "number": "8",+ "name": "I2N",+ "type": "input",+ "description": "N line current negative input for differential measurement; input range 120μVrms to 600mVrms when N line gain is 1."+ },+ {+ "number": "9",+ "name": "Resv_Low",+ "type": "input",+ "description": "Reserved input pin; connect to ground for normal operation."+ },+ {+ "number": "10",+ "name": "I1P",+ "type": "input",+ "description": "L line current positive input for differential measurement; input range 5μVrms to 25mVrms when L line gain is 24."+ },+ {+ "number": "11",+ "name": "I1N",+ "type": "input",+ "description": "L line current negative input for differential measurement; input range 5μVrms to 25mVrms when L line gain is 24."+ },+ {+ "number": "12",+ "name": "USEL",+ "type": "input",+ "description": "UART/SPI interface selection; high selects UART interface, low selects SPI interface; must not change after reset."+ },+ {+ "number": "13",+ "name": "Vref",+ "type": "power_in",+ "description": "Reference voltage output at 1.26V nominal; decouple with 1μF and 1nF capacitors in parallel to ground."+ },+ {+ "number": "14",+ "name": "AGND",+ "type": "power_in",+ "description": "Analog ground reference for analog circuitry."+ },+ {+ "number": "15",+ "name": "VN",+ "type": "input",+ "description": "Voltage measurement negative input for differential measurement; input range 120μVrms to 600mVrms."+ },+ {+ "number": "16",+ "name": "VP",+ "type": "input",+ "description": "Voltage measurement positive input for differential measurement; input range 120μVrms to 600mVrms."+ },+ {+ "number": "17",+ "name": "WarnOut",+ "type": "output",+ "description": "Fatal error warning output; asserted low when metering parameter calibration error or voltage sag is detected."+ },+ {+ "number": "18",+ "name": "CF1",+ "type": "output",+ "description": "Active energy pulse output; generates pulses proportional to active energy with width 80ms (if period ≥160ms) or 0.5T (if period <160ms)."+ },+ {+ "number": "19",+ "name": "CF2",+ "type": "output",+ "description": "Reactive energy pulse output; generates pulses proportional to reactive energy with width 80ms (if period ≥160ms) or 0.5T (if period <160ms)."+ },+ {+ "number": "20",+ "name": "IRQ",+ "type": "output",+ "description": "Interrupt output; asserted low when one or more events in the SysStatus register (01H) occur."+ },+ {+ "number": "21",+ "name": "ZX",+ "type": "output",+ "description": "Voltage zero-crossing detection output; asserts 5ms high pulse when voltage signal crosses zero."+ },+ {+ "number": "22",+ "name": "OSCI",+ "type": "input",+ "description": "External crystal oscillator input for 8.192MHz crystal; connect 12pF capacitor from pin to ground."+ },+ {+ "number": "23",+ "name": "OSCO",+ "type": "output",+ "description": "External crystal oscillator output for 8.192MHz crystal; connect 12pF capacitor from pin to ground."+ },+ {+ "number": "24",+ "name": "CS",+ "type": "input",+ "description": "Chip select (active low) for SPI interface; must be driven low for entire read/write operation in 4-wire mode or low all the time in 3-wire mode."+ },+ {+ "number": "25",+ "name": "SCLK",+ "type": "input",+ "description": "Serial clock for SPI interface; data on SDI shifted into chip on rising edge, data on SDO shifted out on falling edge."+ },+ {+ "number": "26",+ "name": "SDO/UTX",+ "type": "tri_state",+ "description": "Serial data output for SPI (output data on falling edge of SCLK) or UART transmit data; open-drain output requiring 10kΩ pull-up resistor to VDD."+ },+ {+ "number": "27",+ "name": "SDI/URX",+ "type": "input",+ "description": "Serial data input for SPI (input address and data on rising edge of SCLK) or UART receive data; 5V compatible input."+ },+ {+ "number": "28",+ "name": "MMD0",+ "type": "input",+ "description": "Metering mode configuration bit 0; used with MMD1 to select anti-tampering mode (00), L line mode (01), L+N mode (10), or flexible mode (11)."+ }+ ],+ "provenance": {+ "extractor": "extract_pins 0.2",+ "factory_chain": {+ "factory": "2.0.0",+ "extractor": "extract_pins 0.2",+ "primary_model": "claude-haiku-4-5-20251001",+ "primary_mode": "text",+ "consensus_model": "claude-sonnet-4-6",+ "consensus": "agreed",+ "guards": "pin_guards 0.1: passed",+ "guard_notes": [],+ "pages_sent": 60,+ "cost_usd": 0.4546,+ "at": "2026-09-22T05:13:40"+ },+ "datasheet": {+ "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588940826353274880",+ "pages": 60,+ "sha256": "2f88e1a16337c82a",+ "source_tier": "lcsc"+ },+ "cad": "KiCad official (CC-BY-SA 4.0)",+ "pins": {+ "total": 28,+ "described": 28,+ "cites_pages": true,+ "refuses_to_fabricate": true+ }+ },+ "viewers": {+ "symbol": "viewers/symbol.html",+ "footprint": "viewers/footprint.html"+ }+ },+ "visibility": "public",+ "org": "adom",+ "author": {+ "name": "Ray",+ "email": "[email protected]"+ }+}