Overview
The M95256-DRMN3TP/K is a 256-Kbit serial EEPROM device manufactured by STMicroelectronics, designed to meet the stringent requirements of the automotive industry. It operates up to 145°C and is compliant with the AEC-Q100 grade 0 standard, ensuring a very high level of reliability. The device is accessed through a simple serial SPI compatible interface that can run up to 20 MHz. It features advanced true EEPROM technology with a memory array organized as 512 pages of 64 bytes each, and includes an embedded Error Correction Code logic to enhance data integrity.
Key Specifications
| Parameter | Value |
|---|---|
| Memory Capacity | 256 Kbit (32 Kbyte) |
| Interface | SPI (Serial Peripheral Interface) |
| Page Size | 64 bytes |
| Write Protection | Block protection: 1/4, 1/2 or whole memory |
| Write Lockable Page | Identification page (64 bytes) |
| 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 | SO8, TSSOP-8L, DFN8 (all RoHS-compliant and halogen-free) |
Key Features
- Compatible with the Serial Peripheral Interface (SPI) bus
- Advanced true EEPROM technology with embedded Error Correction Code logic
- Write protection by block: 1/4, 1/2 or whole memory
- Additional Write lockable Identification page (64 bytes)
- Extended temperature and voltage ranges
- 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
- High Write cycle endurance
- Long data retention: up to 100 years at 25°C
- ESD Protection: 4000 V (Human Body Model)
- RoHS-compliant and halogen-free packages (ECOPACK2)
Applications
The M95256-DRMN3TP/K is designed for use in the automotive industry, where high reliability and robust performance are critical. It is suitable for various automotive applications such as engine control units, transmission control units, and other systems that require non-volatile memory with high endurance and data integrity.
Q & A
- What is the memory capacity of the M95256-DRMN3TP/K?
The M95256-DRMN3TP/K has a memory capacity of 256 Kbit (32 Kbyte). - What interface does the M95256-DRMN3TP/K use?
The device uses the Serial Peripheral Interface (SPI) bus. - What are the operating temperature ranges for the M95256-DRMN3TP/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-DRMN3TP/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-DRMN3TP/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-DRMN3TP/K?
The data retention period is 50 years at 125°C and 100 years at 25°C. - Does the M95256-DRMN3TP/K have ESD protection?
Yes, the device has ESD protection of 4000 V (Human Body Model). - What packages are available for the M95256-DRMN3TP/K?
The device is available in SO8, TSSOP-8L, and DFN8 packages, all of which are RoHS-compliant and halogen-free. - Is the M95256-DRMN3TP/K compliant with automotive standards?
Yes, it is compliant with the AEC-Q100 grade 0 standard. - What is the purpose of the Identification page in the M95256-DRMN3TP/K?
The Identification page (64 bytes) can be used to store ST device identification and sensitive application parameters, which can later be permanently locked in read-only mode.
