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- STMicroelectronics
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- 2012-08-09
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STMicroelectronics M95256-W M95256-R M95256-DR M95256-DF 256-Kbit Serial SPI Bus EEPROM Datasheet
The M95256 devices are electrically erasable programmable memories organized as 32768 x 8 bits and accessed through the SPI bus. The datasheet covers the M95256-W with a 2.5 V to 5.5 V supply, the M95256-R and M95256-DR with 1.8 V to 5.5 V, and the M95256-DF with 1.7 V to 5.5 V, over a -40°C to +85°C ambient temperature range.
It documents memory organization, signal descriptions, connection to the SPI bus and SPI modes, operating features, instructions, power-up and delivery state, maximum ratings, DC and AC parameters, package mechanical data and part numbering. The M95256-Dx also offers a 64-byte Identification Page that can be locked in Read-only mode.
STMicroelectronics 256KBIT specifications
| Memory array | 256 Kb (32 Kbytes) of EEPROM |
|---|---|
| Page size | 64 bytes |
| Interface | Serial Peripheral Interface (SPI) bus |
| High-speed clock | 20 MHz |
| Supply voltage (M95256-W) | 2.5 V to 5.5 V |
| Supply voltage (M95256-R, M95256-DR) | 1.8 V to 5.5 V |
| Supply voltage (M95256-DF) | 1.7 V to 5.5 V |
| Operating temperature range | -40°C to +85°C |
| Write cycles | More than 4 million |
| Data retention | More than 200 years |
Source: STMicroelectronics M95256-W M95256-R M95256-DR M95256-DF 256-Kbit Serial SPI Bus EEPROM Datasheet
All STMicroelectronics 256KBIT documents by type
Ratings, dimensions and ordering codes, for selection and design work.
- STMicroelectronics M95256-W M95256-R M95256-DR M95256-DF 256-Kbit Serial SPI Bus EEPROM Datasheet 53 p
- ST M24256-BW M24256-BR M24256-BF M24256-DR M24256-DF 256-Kbit serial I C bus EEPROM handbook 41 p
- STMicroelectronics M95256-125 256-Kbit Serial SPI Bus EEPROM Datasheet 38 p
- ST M24256-B M24128-B 256Kbit 128Kbit Serial I C Bus EEPROM With Three Chip Enable Lines handbook 25 p
- ST M24256-B M24128-B 256Kbit 128Kbit Serial I C Bus EEPROM With Three Chip Enable Lines handbook(1) 19 p
- ST M95256 M95128 256Kbit 128Kbit Serial SPI Bus EEPROM With High Speed Clock handbook 40 p
- ST M24128-BW M24128-BR M24256-BW M24256-BR 256Kbit 128Kbit Serial I C Bus EEPROM With Three Chip Enable Lines handbook 25 p
Questions answered in these manuals
What is the memory capacity of the M95256?
The M95256 devices are EEPROMs organized as 32768 x 8 bits and provide 256 Kb (32 Kbytes).
From: STMicroelectronics M95256-W M95256-R M95256-DR M95256-DF 256-Kbit Serial SPI Bus EEPROM Datasheet
What is the supply voltage range of the M95256-W?
The M95256-W can operate with a supply voltage from 2.5 V to 5.5 V.
From: STMicroelectronics M95256-W M95256-R M95256-DR M95256-DF 256-Kbit Serial SPI Bus EEPROM Datasheet
What is the memory organization of the M24256?
The M24256 is organized as 32 K x 8 bits.
From: ST M24256-BW M24256-BR M24256-BF M24256-DR M24256-DF 256-Kbit serial I C bus EEPROM handbook
Can the Identification Page be locked?
Yes, the Identification Page can be permanently locked in Read-only mode.
From: ST M24256-BW M24256-BR M24256-BF M24256-DR M24256-DF 256-Kbit serial I C bus EEPROM handbook
What is the page size of the M95256-125 EEPROM?
The page size is 64 bytes.
From: STMicroelectronics M95256-125 256-Kbit Serial SPI Bus EEPROM Datasheet
Is the M95256-125 compliant with automotive standards?
Yes, it complies with the Automotive standard AEC-Q100 Grade 1.
From: STMicroelectronics M95256-125 256-Kbit Serial SPI Bus EEPROM Datasheet