# BQ32000DR

**Texas Instruments** · Real-time Clocks (RTC) · SOP-8

BQ32000DR from Texas Instruments, 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 | OSCI | input | Oscillator input. Connect to one terminal of the 32.768-kHz crystal (nominal CL = 12 pF; Rs max 70 kΩ). |
| 2 | OSCO | output | Oscillator output. Connect to the other terminal of the 32.768-kHz crystal. |
| 3 | VBACK | power_in | Backup device power. Connects to a supercapacitor or non-rechargeable battery (operating range 1.4 V to VCC; switchover at 2.0 V typical). Integrated trickle charger sources current to this pin. |
| 4 | GND | power_in | Ground reference for the device. |
| 5 | SDA | bidirectional | I2C serial data line. Open-drain; requires external pull-up to VCC (typical 4.7 kΩ). Supports Standard (100 kHz) and Fast (400 kHz) modes. |
| 6 | SCL | input | I2C serial interface clock input, up to 400 kHz. Requires external pull-up to VCC (typical 4.7 kΩ). |
| 7 | IRQ | output | Configurable interrupt output; open-drain, active-low. Programmable via FT/FTF/OUT bits as static output, 1 Hz, or 512 Hz. Requires external pull-up to VCC (typical 4.7 kΩ). Unused during backup-supply operation. |
| 8 | VCC | power_in | Main device supply, 3.0 V to 3.6 V (absolute max 4 V). Place 1 µF decoupling capacitor close to this pin. Typical ICC = 100 µA. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOP-8 |
| Category | RTC |
| Pins | 8 |

## Ordering variants

- `BQ32000DR`

## CAD (KiCad official)

- Symbol: `BQ32000DR`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files: `bq32000dr-etched.step` / `bq32000dr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bq32000dr.step` / `bq32000dr.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/lit/ds/symlink/bq32000.pdf) (34 pp, sha256 `245c32e30aa919eb`, 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/bq32000dr-datasheet.pdf)