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HK24C64HA-USR-B
Public Made by Adomby adom
HK EEPROM, SOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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HK24C64HA-USR-B
HK · EEPROM · SOP-8
HK24C64HA-USR-B from HK, in a SOP-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 | A0 | input | Device address input (chip select) that is hardwired to VIH or VIL and is internally recognized as VIL if left unconnected. |
| 2 | A1 | input | Device address input (chip select) that is hardwired to VIH or VIL and is internally recognized as VIL if left unconnected. |
| 3 | A2 | input | Device address input (chip select) that is hardwired to VIH or VIL and is internally recognized as VIL if left unconnected. |
| 4 | GND | power_in | Ground reference for the device; input voltage on any pin is rated relative to it at -0.3V to VCC+0.3V. |
| 5 | SDA | bidirectional | Serial data line, a bi-directional open-drain signal that can be wire-ORed with other open-drain devices and is typically pulled high by an external resistor. |
| 6 | SCL | input | Serial clock input whose rising edge latches data into the EEPROM and whose falling edge clocks data out. |
| 7 | WP | input | Write protect input that allows programming when left unconnected or at VIL and disables all programming when connected to VIH or VCC, with reads unaffected. |
| 8 | VCC | power_in | Power supply pin with an operating range of 1.8V to 5.5V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | HK |
| Package | SOP-8 |
| Category | Memory |
| Pins | 8 |
CAD (KiCad official)
- Symbol:
HK24C64HA-USR-B - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files:
hk24c64ha-usr-b-etched.step/hk24c64ha-usr-b-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);hk24c64ha-usr-b.step/hk24c64ha-usr-b.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: HK datasheet (18 pp, sha256
dc1791144780f3bf, retrieved 2026-10-22, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-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).
# HK24C64HA-USR-B
**HK** · EEPROM · SOP-8
HK24C64HA-USR-B from HK, in a SOP-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 | A0 | input | Device address input (chip select) that is hardwired to VIH or VIL and is internally recognized as VIL if left unconnected. |
| 2 | A1 | input | Device address input (chip select) that is hardwired to VIH or VIL and is internally recognized as VIL if left unconnected. |
| 3 | A2 | input | Device address input (chip select) that is hardwired to VIH or VIL and is internally recognized as VIL if left unconnected. |
| 4 | GND | power_in | Ground reference for the device; input voltage on any pin is rated relative to it at -0.3V to VCC+0.3V. |
| 5 | SDA | bidirectional | Serial data line, a bi-directional open-drain signal that can be wire-ORed with other open-drain devices and is typically pulled high by an external resistor. |
| 6 | SCL | input | Serial clock input whose rising edge latches data into the EEPROM and whose falling edge clocks data out. |
| 7 | WP | input | Write protect input that allows programming when left unconnected or at VIL and disables all programming when connected to VIH or VCC, with reads unaffected. |
| 8 | VCC | power_in | Power supply pin with an operating range of 1.8V to 5.5V. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | HK |
| Package | SOP-8 |
| Category | Memory |
| Pins | 8 |
## CAD (KiCad official)
- Symbol: `HK24C64HA-USR-B`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files: `hk24c64ha-usr-b-etched.step` / `hk24c64ha-usr-b-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `hk24c64ha-usr-b.step` / `hk24c64ha-usr-b.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [HK datasheet](docs/hk24c64ha-usr-b-datasheet.pdf) (18 pp, sha256 `dc1791144780f3bf`, retrieved 2026-10-22, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text), consensus `claude-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).
[Datasheet PDF](docs/hk24c64ha-usr-b-datasheet.pdf)