AT24C32M

@@ -0,0 +1,52 @@+# AT24C32M++**HGSEMI** · EEPROM · SOP-8++AT24C32M from HGSEMI, in a SOP-8. 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 | E0 | input | Slave address input bit 0. Sets the least-significant bit of the I2C device address (A0), allowing hardware selection between up to 8 devices on the same bus. Internally pulled down to Vss when left floating. |+| 2 | E1 | input | Slave address input bit 1. Sets the middle bit of the I2C device address (A1). Internally pulled down to Vss when left floating. |+| 3 | E2 | input | Slave address input bit 2. Sets the most-significant bit of the hardware-selectable I2C device address (A2). Internally pulled down to Vss when left floating. |+| 4 | Vss | power_in | Ground reference for the Vcc supply. Connect to the system 0 V rail. |+| 5 | SDA | bidirectional | I2C serial data line. Bidirectional open-drain pin used for command, address, and data transfer. Requires an external pull-up resistor to Vcc (typical 1.3 kΩ at 2.5-5.5 V, 10 kΩ at 1.7 V). VOL = 0.4 V max at IOL = 2.1 mA. |+| 6 | SCL | input | I2C serial clock input. Positive edge clocks data in and negative edge clocks data out. Maximum clock frequency 100 kHz / 400 kHz / 1 MHz depending on Vcc; Schmitt-triggered with input filtering for noise suppression. |+| 7 | WCB | input | Write Control input, active low enable for writes. Tie to Vss to allow normal write operations; tie to Vcc to inhibit all writes to the memory array. Internally pulled down to Vss when left floating (writes enabled). |+| 8 | VCC | power_in | Positive supply voltage input. Operating range 1.7 V to 5.5 V. Recommended local decoupling of 100 nF to Vss close to the pin. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | HGSEMI |+| Package | SOP-8 |+| Category | Memory |+| Pins | 8 |++## Ordering variants++- `AT24C32MN`+- `AT24C32MM/TR`+- `AT24C32MMM/TR`+- `AT24C32MMT/TR`+- `AT24C32MDQ3/TR`+- `AT24C32MM5/TR`++## CAD (KiCad official)++- Symbol: `AT24C32M`+- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`+- 3D model: SOP-8 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [HGSEMI datasheet](docs/at24c32m-datasheet.pdf) (20 pp, sha256 `7e4214ab634175eb`, retrieved 2026-08-17, tier: lcsc)+- **Extractor:** `ds2sf` (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.+- **CAD:** KiCad official libraries (CC-BY-SA 4.0).++[Datasheet PDF](docs/at24c32m-datasheet.pdf)

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