BQ32002DR

@@ -0,0 +1,49 @@+# BQ32002DR++**Texas Instruments** · Real-time Clocks (RTC) · SOIC-8++BQ32002DR from Texas Instruments, in a SOIC-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 | OSCI | input | Oscillator input. Connect one terminal of the 32.768-kHz crystal here (CL = 12 pF, Rs up to 70 kOhm). |+| 2 | OSCO | output | Oscillator output. Connect the other terminal of the 32.768-kHz crystal here. |+| 3 | VBACK | power_in | Backup device power input. Connect to a capacitor or non-rechargeable battery. Switchover threshold is 1.8 V (operating->backup) and 2.4 V (backup->operating). |+| 4 | GND | power_in | Ground reference for the device. |+| 5 | SDA | bidirectional | I2C serial data line. Open-drain; requires an external pull-up to VCC (typ. 4.7 kOhm). Supports standard mode (100 kHz) and fast mode (400 kHz). |+| 6 | SCL | input | I2C serial interface clock input. Requires an external pull-up to VCC (typ. 4.7 kOhm). Supports up to 400 kHz. |+| 7 | IRQ | output | Configurable interrupt/frequency test output. Open-drain, requires external pull-up to VCC (typ. 4.7 kOhm). Configurable via FT/FTF/OUT bits as 1 Hz, 512 Hz, or static level. Must be tied to VCC when unused to prevent IRQ operation on backup supply. |+| 8 | VCC | power_in | Main device power supply, 3.0 to 3.6 V nominal (absolute max 4 V). Place a 1 uF decoupling capacitor near the pin. ICC typ. 65 uA, max 200 uA. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | SOIC-8 |+| Category | RTC |+| Pins | 8 |++## Ordering variants++Same part, different packaging or reel option.++- `BQ32002DR`++## CAD (KiCad official)++- Symbol: `BQ32002DR`+- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`+- 3D model: SOIC-8 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/lit/ds/symlink/bq32002.pdf) (30 pp, sha256 `8f78331d8f0834e7`, retrieved 2026-08-17, tier: manufacturer)+- **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/bq32002dr-datasheet.pdf)

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