PCF8563DTR from XBLW, 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 quartz crystal (Rs ≤ 40 kΩ, CL ≈ 10 pF). Integrated internal oscillator load capacitance (CINT ≈ 25 pF typ).
2	OSCO	output	Oscillator output. Connect to the other terminal of the 32.768 kHz quartz crystal, forming the timekeeping oscillator with OSCI.
3	INT	output	Open-drain, active-low interrupt output. Asserted by alarm and timer events; requires an external pull-up. IOL ≥ 1 mA at VOL = 0.4 V (VDD = 5 V).
4	VSS	power_in	Ground / negative supply reference (0 V).
5	SDA	bidirectional	I2C serial data line (open-drain). Requires external pull-up to VDD. Slave address: read 0xA3, write 0xA2. Max bus speed 400 kHz.
6	SCL	input	I2C serial clock input, up to 400 kHz. Driven by the I2C bus master; requires external pull-up to VDD.
7	CLKOUT	output	Programmable clock output (open-drain). Selectable frequency of 32.768 kHz, 1024 Hz, 32 Hz, or 1 Hz; 50% duty. Requires external pull-up.
8	VDD	power_in	Positive supply, 2.5 V to 5.5 V operating. Sleep current ~0.25 µA typ at VDD = 3.0 V, TA = 25 °C. Absolute max 6.5 V.

Key specifications

Parameter	Value
Manufacturer	XBLW
Package	SOP-8
Category	RTC
Pins	8

Ordering variants

Same part, different packaging or reel option.

PCF8563DTR
PCF8563DTRMDTR

CAD (KiCad official)

Symbol: PCF8563DTR
Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
3D model: SOP-8 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`pcf8563dtr.step`	122 KB	You want the bare part, or you mark your own boards.
`pcf8563dtr-etched.step`	2.3 MB	You want the part with `PCF8563DTR` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 561 faces against 147 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.

Provenance

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

Datasheet: XBLW datasheet (20 pp, sha256 6c61c5a0ab6e34d8, 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