ds1302zn-hxy

@@ -0,0 +1,48 @@+# DS1302ZN-HXY++**HXY MOSFET** · Real-time Clocks (RTC) · SOP-8++DS1302ZN-HXY from HXY MOSFET, 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 | Primary supply input (main power) in a dual-supply system. Operating range 2.0 V to 5.5 V. When VCC2 > VCC1 + 0.2 V, the device is powered from VCC2; also serves as the source for the programmable trickle charger driving VCC1. |+| 2 | X1 | input | 32.768 kHz crystal oscillator input. Connect a 32.768 kHz crystal between X1 and X2 with a specified load capacitance (CL) of 6 pF. |+| 3 | X2 | output | 32.768 kHz crystal oscillator output. Connects to the second terminal of the 32.768 kHz timekeeping crystal (CL = 6 pF). |+| 4 | GND | power_in | Ground reference (0 V) for the device. |+| 5 | RST | input | Active-high reset / chip-enable input. Driving RST high initiates a data transfer by enabling the control logic and shift register; driving RST low terminates the transfer and puts the I/O pin into high-impedance. On power-up, RST must be held low until VCC >= 2.5 V, and SCLK must be low when RST is driven high. |+| 6 | I/O | bidirectional | Bidirectional serial data input/output for the 3-wire interface. Data is latched on the rising edge of SCLK and driven out on the falling edge; the pin becomes high-impedance (tri-state) when RST is low or on each rising SCLK edge during read. VOH >= 2.4 V and VOL <= 0.4 V at VCC = 5 V; I/O leakage <= 500 uA. |+| 7 | SCLK | input | Serial clock input for the 3-wire interface. Synchronizes data movement on I/O; max frequency 2.0 MHz at VCC = 5 V (0.5 MHz at VCC = 2.5 V), min high/low times 250 ns at 5 V. |+| 8 | VCC1 | power_in | Backup supply input (battery or supercap) in dual-supply systems, or the single supply in battery-only systems. Operating range 2.0 V to 5.5 V; powers the RTC when VCC2 < VCC1 so timekeeping and RAM data are retained without main power. Also the trickle-charge output node when the programmable charger is enabled. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | HXY MOSFET |+| Package | SOP-8 |+| Category | RTC |+| Pins | 8 |++## Ordering variants++- `DS1302ZN-HXY`++## CAD (KiCad official)++- Symbol: `DS1302ZN-HXY`+- 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:** [HXY MOSFET datasheet](docs/ds1302zn-hxy-datasheet.pdf) (None pp, sha256 `3ccf34e526d4a9ca`, 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/ds1302zn-hxy-datasheet.pdf)

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