Overview
The M95640-WDW6TP is an electrically erasable programmable memory (EEPROM) device produced by STMicroelectronics. It is organized as 8192 x 8 bits, providing a total memory size of 64 Kbits or 8 Kbytes. This EEPROM is accessed through the Serial Peripheral Interface (SPI) bus, making it compatible with a wide range of microcontrollers and other SPI-compatible devices.
The device operates within a broad supply voltage range, specifically from 2.5 V to 5.5 V for the M95640-W model, ensuring versatility in various application environments. It also supports a wide operating temperature range from -40 °C to +85 °C, enhancing its reliability in diverse conditions.
An additional feature of the M95640-WDW6TP is the inclusion of an identification page, which is a 32-byte page that can be used to store sensitive application parameters and later permanently locked in read-only mode.
Key Specifications
| Specification | Value |
|---|---|
| Memory Size | 64 Kbits (8 Kbytes) |
| Memory Configuration | 8192 x 8 bits |
| Memory Interface Type | Serial SPI |
| Clock Frequency Max | 20 MHz |
| Supply Voltage Range (M95640-W) | 2.5 V to 5.5 V |
| Operating Temperature Range | -40 °C to +85 °C |
| Page Size | 32 bytes |
| Write Cycle Time | Byte and page write within 5 ms |
| Data Retention | More than 200 years |
| Write Cycles | More than 4 million |
| Package Options | SO8, TSSOP8, UFDFPN8, WLCSP |
Key Features
- SPI Interface: Compatible with the serial peripheral interface (SPI) bus.
- Memory: 64 Kb (8 Kbytes) of EEPROM with a page size of 32 bytes.
- Additional Write Lockable Page: An identification page (32 bytes) that can be permanently locked in read-only mode.
- Supply Management: Wide single supply voltage range (2.5 V to 5.5 V for M95640-W).
- Temperature Range: Operating temperature range from -40 °C to +85 °C.
- Fast Write Cycle Time: Byte and page write within 5 ms.
- High-Speed Clock Frequency: Up to 20 MHz.
- Enhanced ESD Protection: Robust protection against electrostatic discharge.
- Long Data Retention: More than 200 years.
- High Write Cycles: More than 4 million write cycles.
- Write Protect: Quarter, half, or whole memory array can be write-protected.
Applications
The M95640-WDW6TP EEPROM is suitable for a variety of applications where non-volatile memory is required. These include:
- Industrial Automation: For storing configuration data and parameters in industrial control systems.
- Consumer Electronics: In devices such as set-top boxes, gaming consoles, and other consumer electronics where data needs to be retained even when power is off.
- Automotive Systems: For storing calibration data, configuration settings, and other critical information in automotive systems.
- Medical Devices: To store patient data, device settings, and other critical information in medical devices.
- IoT Devices: For storing device configurations, sensor data, and other information in Internet of Things (IoT) devices.
Q & A
- What is the memory size of the M95640-WDW6TP?
The memory size is 64 Kbits or 8 Kbytes, organized as 8192 x 8 bits.
- What is the interface type of the M95640-WDW6TP?
The interface type is Serial Peripheral Interface (SPI).
- What is the maximum clock frequency of the M95640-WDW6TP?
The maximum clock frequency is 20 MHz.
- What is the supply voltage range for the M95640-W model?
The supply voltage range is from 2.5 V to 5.5 V.
- What is the operating temperature range of the M95640-WDW6TP?
The operating temperature range is from -40 °C to +85 °C.
- How long does it take to write a byte or page in the M95640-WDW6TP?
Byte and page write operations take within 5 ms.
- What is the data retention period of the M95640-WDW6TP?
The data retention period is more than 200 years.
- How many write cycles can the M95640-WDW6TP endure?
The device can endure more than 4 million write cycles.
- Does the M95640-WDW6TP have any additional memory pages?
Yes, it has an additional 32-byte identification page that can be permanently locked in read-only mode.
- What are the package options available for the M95640-WDW6TP?
The package options include SO8, TSSOP8, UFDFPN8, and WLCSP.
