The M95512 devices are Electrically Erasable PROgrammable Memories (EEPROMs) organized as 65536 x 8 bits, accessed through the SPI bus.
The M95512-W can operate with a supply voltage from 2.5 V to 5.5 V, the M95512-R can operate with a supply voltage from 1.8 V to 5.5 V and the M95512-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 the serial peripheral interface (SPI) bus
Memory array
512 Kbit (64 Kbytes) of EEPROM
Page size: 128 bytes
Write
Byte Write within 5 ms
Page Write within 5 ms
Additional write lockable page (Identification page)
Write protect: quarter, half or whole memory array
High-speed clock: 16 MHz
Single supply voltage:
2.5 V to 5.5 V for M95512-W
1.8 V to 5.5 V for M95512-R
1.7 V to 5.5 V for M95512-DF
Operating temperature range: from -40 °C up to +85 °C
Enhanced ESD protection
More than 4 million Write cycles
More than 200-year data retention
Packages:
SO8
TSSOP8
UFDFPN8
WLCSP