Overview
The M95256-DRMF3TG/K is an Automotive grade 256 Kbit serial EEPROM device produced by STMicroelectronics. It operates up to 145°C and is compliant with the very high level of reliability defined by the Automotive standard AEC-Q100 grade 0. This device is accessed through a simple serial SPI compatible interface that can run up to 20 MHz. The memory array is based on advanced true EEPROM technology, offering byte-alterable memory organized into 512 pages of 64 bytes each. An additional Identification Page is available for storing sensitive application parameters, which can be permanently locked in read-only mode.
Key Specifications
| Specification | Details |
|---|---|
| Memory Capacity | 256 Kbit (32 Kbyte) |
| Interface | SPI bus compatible |
| Page Size | 64 bytes |
| Write Protection | Block write protection: 1/4, 1/2 or whole memory |
| Identification Page | 64 bytes, write lockable |
| Operating Temperature | Up to 125 °C (VCC from 1.7 V to 5.5 V), up to 145 °C (VCC from 2.5 V to 5.5 V) |
| Clock Frequency | 20 MHz for VCC ≥ 4.5 V, 10 MHz for VCC ≥ 2.5 V, 5 MHz for VCC ≥ 1.7 V |
| Write Cycle Time | Byte Write within 4 ms, Page Write within 4 ms |
| Write Cycle Endurance | 4 million Write cycles at 25 °C, 1.2 million Write cycles at 85 °C, 600 k Write cycles at 125 °C, 400 k Write cycles at 145 °C |
| Data Retention | 50 years at 125 °C, 100 years at 25 °C |
| ESD Protection | 4000 V (Human Body Model) |
| Packages | TSSOP-8L, DFN8, SO8; RoHS-compliant and halogen-free (ECOPACK2) |
Key Features
- Compatible with the Serial Peripheral Interface (SPI) bus
- High speed clock frequency up to 20 MHz
- Schmitt trigger inputs for noise filtering
- Short Write cycle time: Byte Write and Page Write within 4 ms
- Extended temperature and voltage ranges
- Embedded Error Correction Code logic for improved data integrity
- Write lockable Identification Page for storing sensitive application parameters
- RoHS-compliant and halogen-free (ECOPACK2)
Applications
The M95256-DRMF3TG/K is designed for use in automotive applications where high reliability and durability are critical. It is suitable for various automotive systems, including but not limited to, engine control units, transmission control units, and other automotive electronics that require robust and reliable data storage.
Q & A
- What is the memory capacity of the M95256-DRMF3TG/K?
The M95256-DRMF3TG/K has a memory capacity of 256 Kbit (32 Kbyte). - What interface does the M95256-DRMF3TG/K use?
The device uses a SPI bus compatible interface. - What are the operating temperature ranges for the M95256-DRMF3TG/K?
The device operates up to 125 °C (VCC from 1.7 V to 5.5 V) and up to 145 °C (VCC from 2.5 V to 5.5 V). - What is the clock frequency of the M95256-DRMF3TG/K?
The clock frequency can be up to 20 MHz for VCC ≥ 4.5 V, 10 MHz for VCC ≥ 2.5 V, and 5 MHz for VCC ≥ 1.7 V. - How many write cycles can the M95256-DRMF3TG/K endure?
The device can endure 4 million Write cycles at 25 °C, 1.2 million Write cycles at 85 °C, 600 k Write cycles at 125 °C, and 400 k Write cycles at 145 °C. - What is the data retention period of the M95256-DRMF3TG/K?
The data retention period is 50 years at 125 °C and 100 years at 25 °C. - Does the M95256-DRMF3TG/K have ESD protection?
Yes, it has ESD protection of 4000 V (Human Body Model). - What packages are available for the M95256-DRMF3TG/K?
The device is available in TSSOP-8L, DFN8, and SO8 packages; all are RoHS-compliant and halogen-free (ECOPACK2). - Is the M95256-DRMF3TG/K compliant with automotive standards?
Yes, it is compliant with the Automotive standard AEC-Q100 grade 0. - What is the purpose of the Identification Page in the M95256-DRMF3TG/K?
The Identification Page is a 64-byte page that can store ST device identification and sensitive application parameters, which can be permanently locked in read-only mode.
