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)

Provenance

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

Datasheet: Texas Instruments datasheet (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