component
DS1307ZMM
Public Made by Adomby adom
HGSEMI Real Time Clocks, MSOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownDS1307ZMM
HGSEMI · Real Time Clocks · MSOP-8
DS1307ZMM from HGSEMI, in a MSOP-8. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | X1 | passive | 32.768 kHz crystal pin, specified for a 12.5 pF crystal load; when the device is driven by an external 32.768 kHz oscillator, this pin is the oscillator input. |
| 2 | X2 | passive | 32.768 kHz crystal pin, which is left unconnected when the device is driven by an external 32.768 kHz oscillator on X1. |
| 3 | VBAT | power_in | +3 V backup battery input that must be held between 2.0 V and 3.5 V to keep the RTC and RAM running when VCC is low. |
| 4 | GND | power_in | Ground reference for the device. |
| 5 | SDA | bidirectional | I2C serial data input/output, open-drain, which requires an external pull-up resistor. |
| 6 | SCL | input | I2C serial clock line used to synchronize data transfer, specified as open-drain in the pin description and used with an external pull-up; the device operates only in standard mode at 100 kHz. |
| 7 | SQW/OUT | output | Open-drain square-wave/output driver that outputs 1 Hz, 4.096 kHz, 8.192 kHz or 32.768 kHz when SQWE is 1 and requires an external pull-up resistor. |
| 8 | VCC | power_in | Main supply input, +5 V nominal, with a recommended operating range of 4.5 V to 5.5 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | HGSEMI |
| Package | MSOP-8 |
| Category | Clock/Timing |
| Pins | 8 |
CAD (KiCad official)
- Symbol:
DS1307ZMM - Footprint:
Package_SO:MSOP-8_3x3mm_P0.65mm - 3D model: MSOP-8 (KiCad packages3D, STEP)
- 3D model files:
ds1307zmm-etched.step/ds1307zmm-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ds1307zmm.step/ds1307zmm.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: HGSEMI datasheet (14 pp, sha256
99d95856b4d3f840, retrieved 2026-10-17, 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: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-sonnet-5-5(agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish. - CAD: KiCad official libraries (CC-BY-SA 4.0).