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STMicroelectronics M95640-125 Automotive 64-Kbit Serial SPI EEPROM Datasheet
The M95640-125 is a 64-Kbit (8 Kbytes) Electrically Erasable Programmable Memory (EEPROM) organized as 8192 x 8 bits, accessed via the Serial Peripheral Interface (SPI) bus. It is designed for automotive applications and complies with the AEC-Q100 Grade 1 standard, operating over a temperature range of -40°C to +125°C.
The device features a high-speed clock capability of up to 10 MHz and supports single supply voltages ranging from 2.5 V to 5.5 V (depending on the specific variant). It includes enhanced ESD protection, supports more than 1 million write cycles, and ensures data retention for over 40 years. The memory array is divided into pages of 32 bytes, allowing for efficient byte and page write operations within 5 ms.
STMicroelectronics 64KBIT specifications
| Memory Size | 64 Kb (8 Kbytes) |
|---|---|
| Page Size | 32 bytes |
| Write Time (Byte) | 5 ms |
| Write Time (Page) | 5 ms |
| Max Clock Frequency | 10 MHz |
| Operating Temperature | -40°C to +125°C |
| Write Cycles | 1 million |
| Data Retention | 40 years |
| Supply Voltage (M95640) | 4.5 V to 5.5 V |
| Supply Voltage (M95640-W) | 2.5 V to 5.5 V |
| Package Width (S08) | 150 mil |
| Package Width (TSSOP8) | 169 mil |
Source: STMicroelectronics M95640-125 Automotive 64-Kbit Serial SPI EEPROM Datasheet
All STMicroelectronics 64KBIT documents by type
Ratings, dimensions and ordering codes, for selection and design work.
- STMicroelectronics M95640-125 Automotive 64-Kbit Serial SPI EEPROM Datasheet 38 p
- STMicroelectronics M24C64-125 Automotive 64-Kbit Serial I2C EEPROM Datasheet 29 p
- STMicroelectronics M95640/M95320 64Kbit/32Kbit Serial SPI EEPROM Datasheet 40 p
- ST M48T58 M48T58Y5.0V 64Kbit(8Kbx8) TIMEKEEPER SRAM handbook 27 p
Questions answered in these manuals
What is the operating temperature range for the M95640-125?
The device is guaranteed over a temperature range from -40°C up to +125°C.
From: STMicroelectronics M95640-125 Automotive 64-Kbit Serial SPI EEPROM Datasheet
What is the maximum clock frequency supported?
The device supports a high-speed clock of up to 10 MHz.
From: STMicroelectronics M95640-125 Automotive 64-Kbit Serial SPI EEPROM Datasheet
What is the memory organization of the M24C64-125?
The device is organized as 8 K x 8 bits.
From: STMicroelectronics M24C64-125 Automotive 64-Kbit Serial I2C EEPROM Datasheet
Is the M24C64-125 compliant with automotive standards?
Yes, it is compliant with the Automotive standard AEC-Q100 grade 1.
From: STMicroelectronics M24C64-125 Automotive 64-Kbit Serial I2C EEPROM Datasheet
What SPI modes are supported by these devices?
The devices support CPOL=0, CPHA=0 and CPOL=1, CPHA=1 modes.
From: STMicroelectronics M95640/M95320 64Kbit/32Kbit Serial SPI EEPROM Datasheet
How is data shifted out of the device?
Output data bytes are shifted out most significant bit first on the falling edge of the Serial Clock.
From: STMicroelectronics M95640/M95320 64Kbit/32Kbit Serial SPI EEPROM Datasheet