
STMicroelectronics
A potential downgrade with half the memory, lower clock speed, and a narrower voltage range.
The M95M01-RMN6TP is a 1Mbit SPI EEPROM from STMicroelectronics. Finding a substitute requires careful review, as available alternatives in the same family have smaller memory, different clock speeds, and a higher minimum operating voltage.
Candidates' minimum voltage of 2.5V is incompatible with target's 1.8V.
All candidates have less memory, requiring firmware changes and validation.
All SPI-based candidates share the same SO8 package, ensuring physical fit.
No, there is no direct drop-in replacement for the M95M01-RMN6TP in this list. All potential alternatives have significant parametric differences, most critically a higher minimum voltage requirement.
The best path is a parametric downgrade, such as to the M95512-WMN6TP, but this requires accepting half the memory, a slower clock, and a higher minimum operating voltage of 2.5V.
The primary risk is the voltage incompatibility; all candidates require a 2.5V minimum supply, whereas the target M95M01-RMN6TP can operate down to 1.8V.

STMicroelectronics
A potential downgrade with half the memory, lower clock speed, and a narrower voltage range.
| Feature / factor | M95M01-RMN6TP | M95512-WMN6TP | M95256-WMN6TP | Alt 3 | Compatibility / risk |
|---|---|---|---|---|---|
| Memory | 1 Mbit | 512 Kbit | 256 Kbit | 512 Kbit / 256 Kbit — Candidate has half the memory capacity.; M95256-WMN6TP: Candidate has 75% less memory capacity. | |
| Voltage | 1.8V to 5.5V | 2.5V to 5.5V | 2.5V to 5.5V | 2.5V to 5.5V — Candidate requires higher minimum voltage.; M95256-WMN6TP: Candidate requires higher minimum voltage. | |
| Interface | 16 MHz | 10 MHz | 20 MHz | 10 MHz / 20 MHz — Candidate clock speed is lower.; M95256-WMN6TP: Candidate clock speed is faster. | |
| Package | SO8 | SO8 | SO8 | SO8 — Package is form-factor compatible.; M95256-WMN6TP: Package is form-factor compatible. |
There is no ideal alternative in this list. The M95512-WMN6TP is the closest in memory size but is a downgrade in memory, clock speed, and requires a higher minimum voltage (2.5V vs 1.8V). All options require careful engineering review.