# 24FC01-I

**Microchip Tech** · Pre-ordered Chips · PDIP-8

24FC01-I from Microchip Tech, in a PDIP-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 | unconnected | Not used by the 24XX01 (no internal connections); it may be left floating or tied to VSS or VCC. |
| 2 | A1 | unconnected | Not used by the 24XX01 (no internal connections); it may be left floating or tied to VSS or VCC. |
| 3 | A2 | unconnected | Not used by the 24XX01 (no internal connections); it may be left floating or tied to VSS or VCC. |
| 4 | VSS | power_in | Ground reference for the device; WP is tied to this pin to enable normal read/write of the full memory array. |
| 5 | SDA | bidirectional | Open-drain serial address/data I/O that requires a pull-up resistor to VCC (typically 10 kΩ for 100 kHz, 2 kΩ for 400 kHz and 1 MHz), and may change only while SCL is low except for Start and Stop conditions. |
| 6 | SCL | input | Serial clock input used to synchronize data transfer to and from the device. |
| 7 | WP | input | Write-protect input that must be tied to either VSS (normal memory operation enabled) or VCC (all write operations inhibited, read operations unaffected). |
| 8 | VCC | power_in | Power supply; the 24FC01 operates from 1.7V to 5.5V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Microchip Tech |
| Package | PDIP-8 |
| Category | Interface ICs |
| 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 |
|---|---|---|---|---|---|---|---|
| High-Level Input Voltage (min = 0.7 × VCC) | VIH | 0.7 |  |  | V |  | 3 |
| Low-Level Input Voltage (max = 0.3 × VCC) | VIL |  |  | 0.3 | V |  | 3 |
| Hysteresis of Schmitt Trigger Inputs (min = 0.05 × VCC) | VHYS | 0.05 |  |  | V | Note 1 | 3 |
| Low-Level Output Voltage | VOL |  |  | 0.4 | V | IOL = 3.0 mA, VCC = 2.5V | 3 |
| Input Leakage Current | ILI | -1 |  | 1 | µA | VIN = VSS or VCC | 3 |
| Output Leakage Current | ILO | -1 |  | 1 | µA | VOUT = VSS or VCC | 3 |
| Pin Capacitance (all inputs/outputs) | CIN, COUT |  |  | 10 | pF | VCC = 5.0V (Note 1), TA = +25°C, FCLK = 1 MHz | 3 |
| Operating Current (write) | ICCWRITE |  |  | 3 | mA | VCC = 5.5V, SCL = 400 kHz | 3 |
| Operating Current (read) | ICCREAD |  |  | 1 | mA | VCC = 5.5V, SCL = 400 kHz | 3 |
| Standby Current (I-Temp.) | ICCS |  |  | 1 | µA | SDA = SCL = VCC, WP = VSS, I-Temp. | 3 |
| Clock Frequency | FCLK |  |  | 1000 | kHz | 1.7V ≤ VCC ≤ 5.5V (24FC01) | 4 |
| Clock High Time | THIGH | 260 |  |  | ns | 1.7V ≤ VCC ≤ 5.5V (24FC01) | 4 |
| Clock Low Time | TLOW | 500 |  |  | ns | 1.7V ≤ VCC ≤ 5.5V (24FC01) | 4 |
| SDA and SCL Rise Time | TR |  |  | 1000 | ns | 1.7V ≤ VCC ≤ 5.5V (24FC01) (Note 1) | 4 |
| SDA and SCL Fall Time | TF |  |  | 300 | ns | Note 1 | 4 |
| Start Condition Hold Time | THD:STA | 250 |  |  | ns | 1.7V ≤ VCC ≤ 5.5V (24FC01) | 4 |
| Start Condition Setup Time | TSU:STA | 250 |  |  | ns | 1.7V ≤ VCC ≤ 5.5V (24FC01) | 4 |
| Data Input Hold Time | THD:DAT | 0 |  |  | ns | Note 2 | 4 |
| Data Input Setup Time | TSU:DAT | 50 |  |  | ns | 1.7V ≤ VCC ≤ 5.5V (24FC01) | 4 |
| Stop Condition Setup Time | TSU:STO | 250 |  |  | ns | 1.7V ≤ VCC ≤ 5.5V (24FC01) | 4 |
| WP Setup Time | TSU:WP | 0 |  |  | ns | 1.7V ≤ VCC ≤ 5.5V (24FC01) | 4 |
| WP Hold Time | THD:WP | 1000 |  |  | ns | 1.7V ≤ VCC ≤ 5.5V (24FC01) | 4 |
| Output Valid from Clock | TAA |  |  | 450 | ns | 1.7V ≤ VCC ≤ 5.5V (24FC01) (Note 2) | 4 |
| Bus Free Time | TBUF | 500 |  |  | ns | 1.7V ≤ VCC ≤ 5.5V (24FC01) | 5 |
| Input Filter Spike Suppression (SDA and SCL pins) | TSP |  |  | 50 | ns | Note 1 | 5 |
| Write Cycle Time (byte or page) | TWC |  |  | 5 | ms |  | 5 |
| Endurance |  | 1e+06 |  |  | cycles | +25°C, 5.5V, Page Mode (Note 4) | 5 |
| All inputs and outputs w.r.t. VSS (minimum) |  | -0.3 |  |  | V | Printed range -0.3V to VCC +1.0V; upper limit is not a fixed number | 3 |
| Storage temperature | TSTG | -65 |  | 150 | °C |  | 3 |
| Ambient temperature with power applied | TA | -40 |  | 125 | °C |  | 3 |
| Supply voltage VCC (recommended operating) | VCC | 1.7 |  | 5.5 | V | Industrial (I) grade, 24FC01 | 3 |
| Operating ambient temperature (Industrial) | TA | -40 |  | 85 | °C | Industrial (I) grade | 3 |

## Materials and finish

As the datasheet states them (page.json `metadata.appearance`; the 3D model's colours follow it).

| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts |  | tin | 8-Lead Plastic Small Outline (SN) - Narrow, 3.90 mm (.150 In.) Body [SOIC] A A2 | 28 |

## CAD (KiCad official)

- Symbol: `24FC01-I`
- Footprint: `Package_DIP:DIP-8_W7.62mm`
- 3D model: PDIP-8 (KiCad packages3D, STEP)
- 3D model files: `24fc01-i-etched.step` / `24fc01-i-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `24fc01-i.step` / `24fc01-i.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Microchip Tech datasheet](docs/24fc01-i-datasheet.pdf) (51 pp, sha256 `bd99e09bfa3a6a47`, retrieved 2026-10-30, tier: manufacturer)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-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/24fc01-i-datasheet.pdf)