# SST25VF020B-80-4I-SAE

**Microchip Tech** · NOR FLASH · SOIC-8

SST25VF020B-80-4I-SAE 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 | CE# | input | Chip Enable: the device is enabled by a high-to-low transition on CE#, and CE# must remain low for the duration of any command sequence. |
| 2 | SO | output | Serial Data Output: data is shifted out on the falling edge of the serial clock, and SO outputs Flash busy status during AAI programming when reconfigured as RY/BY#. |
| 3 | WP# | input | Write-Protect: used to enable/disable the BPL bit in the STATUS register. |
| 4 | VSS | power_in | Ground. |
| 5 | SI | input | Serial Data Input: commands, addresses or data are latched on the rising edge of the serial clock. |
| 6 | SCK | input | Serial Clock: provides the timing of the serial interface. |
| 7 | HOLD# | input | Hold: temporarily stops serial communication with the SPI Flash memory without resetting the device. |
| 8 | VDD | power_in | Power Supply: provides power supply voltage of 2.7V-3.6V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Microchip Tech |
| Package | SOIC-8 |
| Category | Memory |
| Pins | 8 |

## CAD (KiCad official)

- Symbol: `SST25VF020B-80-4I-SAE`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files: `sst25vf020b-80-4i-sae-etched.step` / `sst25vf020b-80-4i-sae-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sst25vf020b-80-4i-sae.step` / `sst25vf020b-80-4i-sae.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Microchip Tech datasheet](https://ww1.microchip.com/downloads/aemDocuments/documents/OTH/ProductDocuments/DataSheets/20005054D.pdf) (33 pp, sha256 `1e2e99da0c49d31c`, retrieved 2026-10-27, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `off` (skipped (clean text read)), 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/sst25vf020b-80-4i-sae-datasheet.pdf)