M95256-W

M95256-W M95256-R M95256-DF Datasheet 256-Kbit serial SPI bus EEPROM with high-speed clock SO8N (150 mil width) TSSOP8 (169 mil width) UFDFPN8 (DFN8) (2 x 3 mm) WLSCP8 (1.289 x 1.376 mm) Product status link M95256-DF M95256-R M95256-W Features Compatible with the serial peripheral interface (SPI) bus Memory array – 256-Kbit (32 Kbytes) of EEPROM – Page size: 64 bytes – Additional write lockable page (Identification page) Write time – Byte Write within 5 ms – Page Write within 5 ms Write protect – quarter array – half array – whole memory array High-speed clock: 20 MHz Single supply voltage: – 2.5 V to 5.5 V for M95256-W – 1.8 V to 5.5 V for M95256-R – 1.7 V to 5.5 V for M95256-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 – SO8N (ECOPACK2) – TSSOP8 (ECOPACK2) – UFDFPN8 (ECOPACK2) – WLCSP8 (ECOPACK2) DS4712 - Rev 22 - September 2021 For further information contact your local STMicroelectronics sales office. www.st.com M95256-W M95256-R M95256-DF Description 1 Description The M95256 devices are electrically erasable programmable memories (EEPROMs) organized as 32768 x 8 bits, accessed through the SPI bus. The M95256-W can operate with a supply voltage from 2.5 V to 5.5 V, the M95256-R can operate with a supply voltage from 1.8 V to 5.5 V and the M95256-DF can operate with a supply voltage from 1.7 V to 5.5 V, over an ambient temperature ra...