LK8563S

@@ -0,0 +1,44 @@+# LK8563S++**LANKE** · Real-time Clocks (RTC) · MSOP-8++LK8563S from LANKE, in a MSOP-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. Connects to one terminal of the external 32.768 kHz crystal. Internal load capacitance (C_INT) typ. 25 pF; recommended crystal Rs <= 40 kOhm, C_L = 12.5 pF. |+| 2 | OSCO | output | Oscillator output. Connects to the other terminal of the external 32.768 kHz crystal to form the RTC time base. |+| 3 | /INT | output | Active-low interrupt output, open-drain. Asserted by alarm, timer, or brown-out events; 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). Requires an external pull-up resistor (typ. 4.7 kOhm) to VDD. Slave address 0xA2 (write) / 0xA3 (read); up to 400 kbit/s. |+| 6 | SCL | input | I2C serial clock input. Requires an external pull-up resistor (typ. 4.7 kOhm) to VDD. Max clock 400 kHz. |+| 7 | CLKOUT | output | Programmable clock output, open-drain. Software-selectable frequencies: 32.768 kHz, 1024 Hz, 32 Hz, or 1 Hz. Requires an external pull-up resistor to VDD. |+| 8 | VDD | power_in | Positive supply. Operating range 1.2 V to 5.5 V for timekeeping; 1.8 V to 5.5 V for I2C at 400 kHz. Absolute maximum 6.5 V. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | LANKE |+| Package | MSOP-8 |+| Category | RTC |+| Pins | 8 |++## CAD (KiCad official)++- Symbol: `LK8563S`+- Footprint: `Package_SO:MSOP-8_3x3mm_P0.65mm`+- 3D model: MSOP-8 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [LANKE datasheet](docs/lk8563s-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/lk8563s-datasheet.pdf)

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