component
25LC040
Public Made by Adomby adom
Microchip Tech Pre-ordered MCUs, SOIC-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
markdown25LC040
Microchip Tech · Pre-ordered MCUs · SOIC-8
25LC040 from Microchip Tech, 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 | CS | input | Chip Select input: a low level selects the device, a high level deselects it and forces Standby mode, and SO goes high-impedance when deselected. |
| 2 | SO | tri_state | Serial Data Output: data is shifted out after the falling edge of SCK during a read cycle, and the pin is high-impedance when the device is deselected or HOLD is low. |
| 3 | WP | input | Write-Protect input: when low, all writes to the array or STATUS register are disabled; it must be high to allow writing. |
| 4 | VSS | power_in | Ground. |
| 5 | SI | input | Serial Data Input: receives instructions, addresses and data, latched on the rising edge of SCK. |
| 6 | SCK | input | Serial Clock Input: synchronizes communication; SI is latched on the rising edge and SO updates after the falling edge. |
| 7 | HOLD | input | Hold input: pulled low (while SCK is low) to pause serial communication without resetting the sequence, and must be held high when not in use. |
| 8 | VCC | power_in | Supply voltage, 2.5V to 5.5V for the 25LC040 (absolute maximum 7.0V). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Microchip Tech |
| Package | SOIC-8 |
| Category | Embedded Processors & Controllers |
| Pins | 8 |
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, 150 mil (SOIC) Foot Angle φ 048048 | 14 |
CAD (KiCad official)
- Symbol:
25LC040 - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files:
25lc040-etched.step/25lc040-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);25lc040.step/25lc040.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Microchip Tech datasheet (22 pp, sha256
34959a978a0d599f, retrieved 2026-10-23, tier: manufacturer) - 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).