M95256-W 256 Kbit SPI bus EEPROM with high-speed clock

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 and M95256-DR 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 range of -40 °C / +85 °C.

The M95256-Dx offers an additional page, named the Identification Page (64 bytes). The Identification Page can be used to store sensitive application parameters which can be (later) permanently locked in Read-only mode

技术特性

Compatible with the Serial Peripheral Interface (SPI) bus
Memory array
- 256 Kb (32 Kbytes) of EEPROM
- Page size: 64 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: 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 and M95256-DR
- 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
- RoHS compliant and halogen-free (ECOPACK®)

M95256-W 订购信息

订购型号	产品状态	美金价格	数量	封装	包装形式	温度范围	材料声明
M95256-WDW6TP	Active	0.588	1000	TSSOP8	Tape And Reel	-40 °C-85 °C	M95256-WDW6TP
M95256-WMN6TP	Active	0.588	1000	SO8	Tape And Reel	-40 °C-85 °C	M95256-WMN6TP

DATASHEET

描述	版本	大小
M95256-W : DS4712: 256-Kbit serial SPI bus EEPROM with high-speed clock	19	690KB

APPLICATION NOTES

描述	版本	大小
AN2014: How a designer can make the most of STMicroelectronics Serial EEPROMs	8	645KB