component
m93c66-rmn3tp
Public Unreviewedby Ray
STMicroelectronics EEPROM, SOIC-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.
3D Model
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README
markdownM93C66-RMN3TP
STMicroelectronics · EEPROM · SOIC-8
M93C66-RMN3TP from STMicroelectronics, in a SOIC-8. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | S | input | Chip Select input. Active High; enables the device and frames each MICROWIRE instruction. Must be pulled to VSS at power-up (recommended external pull-down, typ. 100 kΩ) to prevent inadvertent selection. |
| 2 | C | input | Serial Clock input. Synchronous clock driven by the bus master; latches D on rising edges and shifts Q out. Maximum clock rate 2 MHz. External pull-down recommended so that C is low when S is deselected (meets tSLCH). |
| 3 | D | input | Serial Data input. Carries the start bit, op-code, address, and write data for MICROWIRE instructions; sampled on the rising edge of C while S is High. |
| 4 | Q | tri_state | Serial Data output. Push-pull output that shifts read data out on the rising edge of C; also drives the READY/BUSY status during a programming cycle when S is High. Goes high-impedance when the device is deselected. |
| 5 | VSS | power_in | Ground reference (0 V). Common return for supply and all logic signals. |
| 6 | ORG | input | Organization Select input. Tie to VCC (or leave open - internally pulled up) to configure the array as 256 x 16; tie to VSS to configure as 512 x 8. Must be driven to VCC or VSS (not left mid-rail) in Standby to minimize ICC. |
| 7 | DU | unconnected | Don't Use. Reserved for STMicroelectronics test purposes and must not be used in normal operation. May be left unconnected or tied to VCC or VSS. |
| 8 | VCC | power_in | Positive supply input, 1.8 V to 5.5 V. Decouple to VSS with a 10-100 nF capacitor close to the pin; must remain stable through the internal write cycle (tW). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | SOIC-8 |
| Category | Memory |
| Pins | 8 |
Ordering variants
M93C66-RMN3TPM93C66-RMN3TPDWM93C66-RMN3TPMF
CAD (KiCad official)
- Symbol:
M93C66-RMN3TP - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOIC-8 (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: STMicroelectronics datasheet (None pp, sha256
ea011e1cc0d30be7, retrieved 2026-08-17, tier: manufacturer) - Extractor:
ds2sf(Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate. - CAD: KiCad official libraries (CC-BY-SA 4.0).