Overview
The M95640-DRDW3TP/K is a 64-Kbit serial EEPROM device produced by STMicroelectronics, designed for automotive applications. It operates up to 145°C and is compliant with the high reliability standards defined by the Automotive standard AEC-Q100 grade 0. 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 byte-alterable memory, organized into 256 pages of 32 bytes each, and includes an embedded Error Correction Code logic to enhance data integrity. An additional Identification Page is available for storing device identification and application-specific parameters, which can be permanently locked in read-only mode.
Key Specifications
| Parameter | Value |
|---|---|
| Memory Size | 64 Kbit (8 Kbyte) |
| Page Size | 32 bytes |
| Interface | SPI compatible |
| Clock Frequency | Up to 20 MHz (VCC ≥ 4.5 V), 10 MHz (VCC ≥ 2.5 V), 5 MHz (VCC ≥ 1.7 V) |
| Supply Voltage | 1.7 V to 5.5 V |
| Operating Temperature | Up to 145°C |
| Write Protection | Block protection: 1/4, 1/2 or whole memory |
| Write Cycle Endurance | 4 million cycles at 25°C, 1.2 million cycles at 85°C, 600k cycles at 125°C, 400k cycles at 145°C |
| Data Retention | 50 years at 125°C, 100 years at 25°C |
| ESD Protection | 4000 V (Human Body Model) |
| Package | TSSOP-8L, DFN8, SO8 (all RoHS-compliant and halogen-free, ECOPACK2®) |
Key Features
- Compatible with the Serial Peripheral Interface (SPI) bus
- 64 Kbit (8 Kbyte) of EEPROM memory
- Page size: 32 bytes
- Write protection by block: 1/4, 1/2 or whole memory
- Additional Write lockable Identification Page (32 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 and long data retention
- ESD Protection (Human Body Model): 4000 V
- RoHS-compliant and halogen-free packages (ECOPACK2®)
Applications
The M95640-DRDW3TP/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:
- Automotive control units
- Infotainment systems
- Safety and security systems
- Telematics and navigation systems
- Other high-reliability automotive electronics
Q & A
- What is the memory size of the M95640-DRDW3TP/K?
The memory size is 64 Kbit (8 Kbyte).
- What interface does the M95640-DRDW3TP/K use?
The device uses a Serial Peripheral Interface (SPI) bus.
- What is the maximum operating temperature of the M95640-DRDW3TP/K?
The device can operate up to 145°C.
- What are the write protection options for the M95640-DRDW3TP/K?
The device offers block protection for 1/4, 1/2, or the whole memory.
- How many write cycles can the M95640-DRDW3TP/K endure?
The device can endure 4 million write cycles at 25°C, 1.2 million cycles at 85°C, 600k cycles at 125°C, and 400k cycles at 145°C.
- What is the data retention period of the M95640-DRDW3TP/K?
The data retention period is 50 years at 125°C and 100 years at 25°C.
- What type of ESD protection does the M95640-DRDW3TP/K have?
The device has 4000 V ESD protection (Human Body Model).
- What packages are available for the M95640-DRDW3TP/K?
The device is available in TSSOP-8L, DFN8, and SO8 packages, all of which are RoHS-compliant and halogen-free (ECOPACK2®).
- Can the Identification Page be used for application-specific data?
- What is the purpose of the Schmitt trigger inputs on the M95640-DRDW3TP/K?
