# 24C02

**HGSEMI** · EEPROM · SOIC-8

24C02 from HGSEMI, in a SOIC-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 A0, hard-wired for the 2K (24C02) device so up to eight 2K devices can share one bus. |
| 2 | A1 | input | Device address input A1, hard-wired for the 2K (24C02) device so up to eight 2K devices can share one bus. |
| 3 | A2 | input | Device address input A2, hard-wired for the 2K (24C02) device so up to eight 2K devices can share one bus. |
| 4 | GND | power_in | Ground. |
| 5 | SDA | bidirectional | Serial data pin for bi-directional data transfer; open-drain output that may be wire-ORed with other open-drain or open-collector devices and needs an external pull-up. |
| 6 | SCL | input | Serial clock input that clocks data into the EEPROM on the positive edge and out of it on the negative edge. |
| 7 | WP | input | Write protect input: connected to GND allows normal read/write operations, connected to VCC write-protects the full array. |
| 8 | VCC | power_in | Power supply, 1.7V to 5.5V operating range (absolute maximum -0.3V to +6.5V). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | HGSEMI |
| Package | SOIC-8 |
| Category | Memory |
| Pins | 8 |

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| DC Supply Voltage |  | -0.3 |  | 6.5 | V |  | 9 |
| Storage Temperature |  | -65 |  | 150 | ℃ |  | 9 |
| Operating Ambient Temperature |  | -40 |  | 85 | ℃ |  | 9 |
| Supply Voltage | Vcc | 1.7 |  | 5.5 | V |  | 9 |
| Operating Ambient Temperature | TA | -40 |  | 85 | ℃ |  | 9 |
| Supply Current | ICC1 |  | 0.4 | 1 | mA | VCC = 5.0V READ at 400KHz | 9 |
| Supply Current | ICC2 |  | 2 | 3 | mA | VCC = 5.0V WRITE at 400KHz | 9 |
| Standby Current | ISB |  |  | 3 | μA | VIN=VCC or GND | 9 |
| Input Leakage Current | ILI |  |  | 3 | μA | VIN=VCC or GND | 9 |
| Output Leakage Current | ILO |  | 0.05 | 3 | μA | VOUT=VCC or GND | 9 |
| Input Low Level | VIL1 | -0.3 |  |  | V | Vcc=1.8V to 5.5V | 9 |
| Output Low Level | VOL3 |  |  | 0.4 | V | VCC = 5.0V, IOL=3.0mA | 9 |
| Output Low Level | VOL1 |  |  | 0.2 | V | VCC = 1.7V, IOL=0.15mA | 9 |
| Input/Output Capacitance (SDA) | CI/O |  |  | 8 | pF | VI/O = 0V | 10 |
| Input Capacitance (A0, A1, A2, SCL) | CIN |  |  | 6 | pF | VIN = 0V | 10 |
| Clock Frequency, SCL | fSCL |  |  | 400 | KHz | 1.7v < Vcc < 2.5v | 10 |
| Clock Frequency, SCL | fSCL |  |  | 1000 | KHz | 2.5v < Vcc < 5.5v | 10 |
| Clock Pulse Width Low | tLOW | 1.2 |  |  | s | 1.7v < Vcc < 2.5v | 10 |
| Clock Pulse Width Low | tLOW | 0.6 |  |  | s | 2.5v < Vcc < 5.5v | 10 |
| Clock Pulse Width High | tHIGH | 0.6 |  |  | s | 1.7v < Vcc < 2.5v | 10 |
| Clock Pulse Width High | tHIGH | 0.4 |  |  | s | 2.5v < Vcc < 5.5v | 10 |
| Noise Suppression Time | tI |  |  | 50 | ns | 1.7v < Vcc < 2.5v | 10 |
| Noise Suppression Time | tI |  |  | 40 | ns | 2.5v < Vcc < 5.5v | 10 |
| Clock Low to Data Out Valid | tAA | 0.05 |  | 0.9 | s | 1.7v < Vcc < 2.5v | 10 |
| Clock Low to Data Out Valid | tAA | 0.05 |  | 0.55 | s | 2.5v < Vcc < 5.5v | 10 |
| Time the bus must be free before a new transmission can start | tBUF | 1.2 |  |  | s | 1.7v < Vcc < 2.5v | 10 |
| Time the bus must be free before a new transmission can start | tBUF | 0.5 |  |  | s | 2.5v < Vcc < 5.5v | 10 |
| Start Hold Time | tHD.STA | 0.6 |  |  | s | 1.7v < Vcc < 2.5v | 10 |
| Start Hold Time | tHD.STA | 0.25 |  |  | s | 2.5v < Vcc < 5.5v | 10 |
| Start Setup Time | tSU.STA | 0.6 |  |  | s | 1.7v < Vcc < 2.5v | 10 |
| Start Setup Time | tSU.STA | 0.25 |  |  | s | 2.5v < Vcc < 5.5v | 10 |
| Data In Hold Time | tHD.DAT | 0 |  |  | s | 1.7v < Vcc < 2.5v | 10 |
| Data In Setup Time | tSU.DAT | 100 |  |  | ns | 1.7v < Vcc < 2.5v | 10 |
| Inputs Rise Time | tR |  |  | 0.3 | s | 1.7v < Vcc < 2.5v | 10 |
| Inputs Fall Time | tF |  |  | 300 | ns | 1.7v < Vcc < 2.5v | 10 |
| Inputs Fall Time | tF |  |  | 100 | ns | 2.5v < Vcc < 5.5v | 10 |
| Stop Setup Time | tSU.STO | 0.6 |  |  | s | 1.7v < Vcc < 2.5v | 10 |
| Stop Setup Time | tSU.STO | 0.25 |  |  | s | 2.5v < Vcc < 5.5v | 10 |
| Data Out Hold Time | tDH | 50 |  |  | ns | 1.7v < Vcc < 2.5v | 10 |
| Write Cycle Time | tWR |  | 1.5 | 5 | ms | 1.7v < Vcc < 2.5v | 10 |

## CAD (KiCad official)

- Symbol: `24C02`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files: `24c02-etched.step` / `24c02-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `24c02.step` / `24c02.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [HGSEMI datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588881761837461504) (13 pp, sha256 `85f91ba71d1f8b2a`, retrieved 2026-10-17, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+vision), consensus `claude-opus-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/24c02-datasheet.pdf)