BM8563ESA

@@ -0,0 +1,43 @@+# BM8563ESA++**GATEMODE** · Real-time Clocks (RTC) · SOP-8++BM8563ESA from GATEMODE, 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 a 32.768 kHz quartz crystal (Rs <= 40 kOhm, CL = 8 pF typical). External trimmer capacitance 5-25 pF may be added on OSCI. |+| 2 | OSCO | output | Oscillator output. Connect to the other terminal of the 32.768 kHz quartz crystal. On-chip integrated capacitance is typically 25 pF (15-35 pF). |+| 3 | INT | output | Interrupt output, open-drain, active LOW. Asserts on alarm (AF) or timer (TF) events when the corresponding AIE/TIE enable is set; requires an external pull-up. Sink capability 1 mA at VOL = 0.4 V, VDD = 5 V. |+| 4 | VSS | power_in | Ground (0 V) reference for the device. |+| 5 | SDA | bidirectional | I2C-bus serial data input/output. Open-drain; requires external pull-up. Supports standard (100 kHz) and fast (400 kHz) modes. Output sink current 3 mA at VOL = 0.4 V, VDD = 5 V. Slave address: read A3h / write A2h. |+| 6 | SCL | input | I2C-bus serial clock input. Maximum 400 kHz. Input thresholds VIL <= 0.3 VDD, VIH >= 0.7 VDD. |+| 7 | CLKOUT | output | Programmable clock output, open-drain. Selectable 32.768 kHz (default), 1.024 kHz, 32 Hz, or 1 Hz via the CLKOUT_control register (0Dh); high-impedance when disabled. Requires external pull-up; sink capability 1 mA at VOL = 0.4 V, VDD = 5 V. |+| 8 | VDD | power_in | Positive supply voltage. 1.2 V to 5.5 V for clock data integrity; 1.8 V to 5.5 V for active I2C interface (up to 400 kHz). Typical low-power current 0.5 uA at VDD = 3.0 V, 25 degC. Absolute max +6.5 V. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | GATEMODE |+| Package | SOP-8 |+| Category | RTC |+| Pins | 8 |++## CAD (KiCad official)++- Symbol: `BM8563ESA`+- 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:** [GATEMODE datasheet](docs/bm8563esa-datasheet.pdf) (29 pp, sha256 `636c5bb2af64a7e3`, 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](docs/bm8563esa-datasheet.pdf)

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