Key facts
- Brand
- STMicroelectronics
- Model
- M95256
- Industry
- Industrial
- Documents
- 3
- Languages
- EN
- Last added
- 2012-06-12
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STMicroelectronics M95256/M95128 Serial EEPROM Datasheet
This document describes the M95256 and M95128, which are electrically erasable programmable memory (EEPROM) devices accessed by a high-speed SPI-compatible bus. The memory arrays are organized as 32768 x 8 bit for the M95256 and 16384 x 8 bit for the M95128. The devices support single supply voltages ranging from 1.8V to 5.5V depending on the specific variant (M95xxx, M95xxx-W, or M95xxx-R) and feature a high-speed clock rate of 10MHz with a 5ms write time.
Read onlineSTMicroelectronics M95256 specifications
| Memory Capacity (M95256) | 32768 x 8 bit |
|---|---|
| Memory Capacity (M95128) | 16384 x 8 bit |
| Clock Rate | 10MHz |
| Write Time | 5ms |
| Supply Voltage (Standard) | 4.5 to 5.5V |
| Supply Voltage (-W variant) | 2.5 to 5.5V |
| Supply Voltage (-R variant) | 1.8 to 5.5V |
| Erase/Write Cycles | More than 100000 |
| Data Retention | More than 40-Year |
Source: STMicroelectronics M95256/M95128 Serial EEPROM Datasheet
All STMicroelectronics M95256 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What SPI modes are supported?
The devices support CPOL=0, CPHA=0 and CPOL=1, CPHA=1 modes.
From: STMicroelectronics M95256/M95128 Serial EEPROM Datasheet
Can the read-only area size be adjusted?
Yes, the device features an adjustable size read-only EEPROM area.
From: STMicroelectronics M95256/M95128 Serial EEPROM Datasheet
What SPI modes are supported by these EEPROMs?
These devices support SPI modes with CPOL=0, CPHA=0 and CPOL=1, CPHA=1.
From: ST M95256 M95128 256Kbit 128Kbit Serial SPI Bus EEPROM With High Speed Clock handbook
How is the device selected on the SPI bus?
The device is selected when the Chip Select (S) signal is taken Low.
From: ST M95256 M95128 256Kbit 128Kbit Serial SPI Bus EEPROM With High Speed Clock handbook
What SPI modes are supported?
The devices support CPOL=0, CPHA=0 and CPOL=1, CPHA=1 modes.
From: STMicroelectronics M95256/M95128 Serial EEPROM Datasheet
What is the supply voltage range for M95xxx?
The standard M95xxx devices operate with a single supply voltage of 4.5 to 5.5V.
From: STMicroelectronics M95256/M95128 Serial EEPROM Datasheet