The M24M01 is a 1 Mbit I2C-compatible EEPROM (Electrically Erasable PROgrammable Memory) organized as 128 K x 8 bits.
The M24M01-R can operate with a supply voltage from 1.8 V to 5.5 V, and the M24M01-DF can operate with a supply voltage from 1.7 V to 5.5 V, over an ambient temperature range of –40 °C / +85 °C.

Compatible with all I2C bus modes:
1 MHz
400 kHz
100 kHz
Memory array:
1 Mbit (128 Kbyte) of EEPROM
Page size: 256 byte
Additional Write lockable page (M24M01-D order codes)
Single supply voltage and high speed:
1 MHz clock from 1.7 V to 5.5 V
Write:
Byte Write within 5 ms
Page Write within 5 ms
Operating temperature range:
from -40 °C up to +85 °C
Random and sequential Read modes
Write protect of the whole memory array
Enhanced ESD/Latch-Up protection
More than 4 million Write cycles
More than 200-years data retention