LK8563T

@@ -0,0 +1,44 @@+# LK8563T++**LANKE** · Real-time Clocks (RTC) · SOP-8++LK8563T from LANKE, 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 | 32.768 kHz crystal oscillator input. Connect to one lead of an external 32.768 kHz quartz crystal (Rs=40 kΩ, CL=12.5 pF typical). Internal load capacitance is integrated (15/25/35 pF typical). |+| 2 | OSCO | output | 32.768 kHz crystal oscillator output. Connect to the second lead of the external 32.768 kHz quartz crystal. |+| 3 | /INT | output | Open-drain interrupt output. Asserted low when an alarm (AF) or timer (TF) event occurs, per the TIE/AIE enable bits in control/status register 2. Requires an external pull-up resistor to VDD. |+| 4 | VSS | power_in | Ground reference (0 V). |+| 5 | SDA | bidirectional | I2C serial data line (open-drain). Slave addresses: 0A3H (read) / 0A2H (write). Bus speed up to 400 kHz. Requires external pull-up resistor (typ. 4.7 kΩ) to VDD. |+| 6 | SCL | input | I2C serial clock input, up to 400 kHz. Requires external pull-up resistor (typ. 4.7 kΩ) to VDD. |+| 7 | CLKOUT | output | Programmable open-drain clock output. Software-selectable frequency of 32.768 kHz (default), 1024 Hz, 32 Hz, or 1 Hz via the CLKOUT frequency register (0DH). High-impedance when disabled; requires external pull-up when enabled. |+| 8 | VDD | power_in | Positive supply voltage. Operating range 1.2 V to 5.5 V (1.8 V min for I2C at 400 kHz). Absolute maximum 6.5 V. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | LANKE |+| Package | SOP-8 |+| Category | RTC |+| Pins | 8 |++## CAD (KiCad official)++- Symbol: `LK8563T`+- 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:** [LANKE datasheet](docs/lk8563t-datasheet.pdf) (17 pp, sha256 `19c5303412fc54b3`, retrieved 2026-08-17, tier: lcsc)+- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.+- **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/lk8563t-datasheet.pdf)

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