# 93AA66BT-I

**Microchip Tech** · EEPROM · SOT-23-6

93AA66BT-I from Microchip Tech, in a SOT-23-6. 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 | DO | output | Data Out outputs read data synchronously with CLK (TPD after the positive CLK edge) and shows Ready/Busy status during erase and write cycles when CS is brought high. |
| 2 | VSS | power_in | Ground reference pin for the device. |
| 3 | DI | input | Data In clocks in the Start bit, opcode, address and data synchronously with the CLK input. |
| 4 | CLK | input | Serial Clock synchronizes host communication; opcodes, address and data are clocked in on the positive CLK edge and CLK is a don't care while CS is low. |
| 5 | CS | input | A high level selects the device and a low level deselects it into Standby mode; CS must be low for 250 ns minimum (TCSL) between consecutive instructions. |
| 6 | VCC | power_in | Power supply pin; the Device Selection Table lists the 93AA66B VCC range as 1.8V-5-5V (printed text), and WRAL operation requires VCC of at least 4.5V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Microchip Tech |
| Package | SOT-23-6 |
| Category | Memory |
| Pins | 6 |

## 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 | Part Number VCC Range ORG Pin Word Size Temperature Ranges Packages 93AA66A 1.8V-5.5V No 8-bit I MC, MS, P, SN, OT, MN,ST | 1 |

## CAD (KiCad official)

- Symbol: `93AA66BT-I`
- Footprint: `Package_TO_SOT_SMD:SOT-23-6`
- 3D model: SOT-23-6 (KiCad packages3D, STEP)
- 3D model files: `93aa66bt-i-etched.step` / `93aa66bt-i-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `93aa66bt-i.step` / `93aa66bt-i.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Microchip Tech datasheet](docs/93aa66bt-i-datasheet.pdf) (43 pp, sha256 `04494d6624e9f111`, 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/93aa66bt-i-datasheet.pdf)