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AiP1302SA8.TR
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Wuxi I core Elec Real-time Clocks (RTC), SOP-8. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+55@@ -0,0 +1,55 @@+# AiP1302SA8.TR++**Wuxi I core Elec** · Real-time Clocks (RTC) · SOP-8++AiP1302SA8.TR from Wuxi I core Elec, 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 | VCC2 | power_in | Main power supply input, 2.0 V to 5.5 V. Powers the device when VCC2 > VCC1 + 0.2 V; also sources trickle-charge current to VCC1 when enabled. |+| 2 | X1 | passive | 32.768 kHz crystal connection. Connect to one terminal of an external 32.768 kHz tuning-fork crystal (typical CL = 12.5 pF, ESR ≤ 45 kΩ). |+| 3 | X2 | passive | 32.768 kHz crystal connection. Connect to the other terminal of the external 32.768 kHz tuning-fork crystal (typical CL = 12.5 pF, ESR ≤ 45 kΩ). |+| 4 | GND | power_in | Ground / device 0 V reference. |+| 5 | CE | input | Chip enable (chip-select) input for the 3-wire serial interface. Drive high to load address/command into the shift register and start a transfer; drive low to end the transfer and place I/O in high impedance. On power-up CE must be held low until VCC > 2.5 V, and CE may only be driven high while SCLK is low. |+| 6 | I/O | bidirectional | Bidirectional serial data pin for the 3-wire interface. Command/address and write data are shifted in on SCLK rising edges (LSB first); read data is shifted out on SCLK falling edges. High impedance while CE is low. |+| 7 | SCLK | input | Serial clock input for the 3-wire interface. Maximum clock frequency 0.5 MHz at VCC=2.0 V and 2.0 MHz at VCC=5.0 V. |+| 8 | VCC1 | power_in | Backup power supply input (battery or ≥0.1 F supercapacitor). Supplies the RTC when VCC2 < VCC1 + 0.2 V. Can be trickle-charged from VCC2 through internal resistor/diode network (R1=2 kΩ, R2=4 kΩ, R3=8 kΩ, VTD≈0.7 V). |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Wuxi I core Elec |+| Package | SOP-8 |+| Category | RTC |+| Pins | 8 |++## Ordering variants++Same part, different packaging or reel option.++- `AiP1302SA8.TR`+- `AiP1302SA8.TB`+- `AiP1302SA8.TRDA8.TB`+- `AiP1302SA8.TRTB8.TR`+- `AiP1302SA8.TRTB8.TB`+- `AiP1302SA8.TRXF8.TR`++## CAD (KiCad official)++- Symbol: `AiP1302SA8.TR`+- 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:** [Wuxi I core Elec datasheet](docs/aip1302sa8-tr-datasheet.pdf) (17 pp, sha256 `5d7048ca9dc07e97`, 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/aip1302sa8-tr-datasheet.pdf)
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