component
hg24lc128m
Public Unreviewedby Ray
HGSEMI EEPROM, SOP-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.
3D Model
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README
markdownHG24LC128M
HGSEMI · EEPROM · SOP-8
HG24LC128M from HGSEMI, 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 | A0 | input | Device/page address input bit 0. Hardwired to VCC or GND to set the low bit of the I2C slave address, allowing up to 4 devices on one bus (with A1). Internally pulled down to GND if left floating with <3 pF coupling to VCC; recommend tying to GND if coupling >3 pF. |
| 2 | A1 | input | Device/page address input bit 1. Hardwired to VCC or GND to set the middle bit of the I2C slave address. Internally biased low if allowed to float with low capacitive coupling to VCC; otherwise tie to GND. |
| 3 | NC | unconnected | No connect. Leave floating or tie to any potential; not internally bonded to any function on this 128K/256K variant. |
| 4 | GND | power_in | Ground reference for the device. |
| 5 | SDA | bidirectional | I2C serial data line. Bi-directional, open-drain output; requires an external pull-up resistor to VCC. Can be wire-ORed with other open-drain/open-collector devices on the bus. Schmitt-trigger input with noise suppression (tI = 50 ns max). |
| 6 | SCL | input | I2C serial clock input. Positive edge clocks data into the EEPROM; negative edge clocks data out. Schmitt-trigger with noise filtering. Max fSCL = 400 kHz (up to 1 MHz at 5V per features). |
| 7 | WP | input | Write Protect input. Tie to GND for normal read/write operations; tie to VCC to inhibit all write operations to the full memory array (hardware write protect). Internally pulled to GND when floating with <3 pF coupling to VCC; recommend GND tie otherwise. |
| 8 | VCC | power_in | Power supply input, 1.8V to 5.5V. Absolute maximum +6.5V. Typical read current 0.4mA and write current 2.0mA at 5V/400kHz; standby current typ. 1uA at 5V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | HGSEMI |
| Package | SOP-8 |
| Category | Memory |
| Pins | 8 |
Ordering variants
HG24LC128MM/TRHG24LC128MNHG24LC128MMM/TR
CAD (KiCad official)
- Symbol:
HG24LC128M - 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: HGSEMI datasheet (None pp, sha256
4bc6e47b3597893a, 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).