Overview
The M95128-DWDW4TP/K is a 128-Kbit serial SPI bus EEPROM designed and manufactured by STMicroelectronics. This device is part of the Automotive grade series, complying with the AEC-Q100 grade 0 standard, which ensures a high level of reliability. The EEPROM operates using advanced true EEPROM technology, providing electrically erasable and programmable memory. It is accessed through a simple serial SPI compatible interface, supporting high-speed clock frequencies up to 20 MHz.
Key Specifications
| Parameter | Value |
|---|---|
| Memory Size | 128 Kbit (16 Kbyte) |
| Page Size | 64 bytes |
| Interface | SPI Serial |
| Supply Voltage | 2.5 V to 5.5 V |
| Operating Temperature | -40°C to 145°C |
| High-Speed Clock Frequency | Up to 20 MHz |
| Write Cycle Time | Byte Write: 4 ms, Page Write: 4 ms |
| 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) |
| Packages | SO8, TSSOP8, UFDFPN8 (ECOPACK2®) |
Key Features
- Compatible with the Serial Peripheral Interface (SPI) bus.
- Memory array organized as 256 pages of 64 bytes each, with an additional 64-byte Identification page.
- Write protection by block: quarter, half, or whole memory, and an additional write lockable Identification page.
- Extended temperature and voltage ranges: up to 145°C and 2.5 V to 5.5 V supply voltage.
- High-speed clock frequency: up to 20 MHz for VCC ≥ 4.5 V.
- Schmitt trigger inputs for noise filtering.
- Short Write cycle time: byte and page writes within 4 ms.
- Enhanced ESD protection: 4000 V (Human Body Model).
- RoHS-compliant and halogen-free packages (ECOPACK2®).
Applications
The M95128-DWDW4TP/K is designed for use in automotive and industrial applications where high reliability and durability are critical. It is suitable for various uses such as:
- Automotive systems requiring data storage and configuration.
- Industrial control systems needing non-volatile memory.
- Applications requiring high-temperature operation and robust data retention.
- Devices that need to store configuration data, calibration parameters, or other critical information.
Q & A
- What is the memory size of the M95128-DWDW4TP/K?
The memory size is 128 Kbit (16 Kbyte), organized as 256 pages of 64 bytes each.
- What is the operating temperature range of the M95128-DWDW4TP/K?
The operating temperature range is from -40°C to 145°C.
- What is the maximum clock frequency supported by the M95128-DWDW4TP/K?
The maximum clock frequency is up to 20 MHz for VCC ≥ 4.5 V.
- How many write cycles can the M95128-DWDW4TP/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 M95128-DWDW4TP/K?
The data retention period is 50 years at 125°C and 100 years at 25°C.
- Does the M95128-DWDW4TP/K have any additional memory pages?
Yes, it includes an additional 64-byte Identification page for storing device identification and application-specific data.
- What types of packages are available for the M95128-DWDW4TP/K?
The device is available in SO8, TSSOP8, and UFDFPN8 packages, all of which are RoHS-compliant and halogen-free (ECOPACK2®).
- How does the write protection feature work on the M95128-DWDW4TP/K?
The device offers write protection by block: quarter, half, or whole memory, and an additional write lockable Identification page.
- What is the purpose of the Hold (HOLD) signal in the M95128-DWDW4TP/K?
The Hold (HOLD) signal is used to pause any serial communications with the device without deselecting it.
- Does the M95128-DWDW4TP/K have ESD protection?
Yes, the device features enhanced ESD protection with a rating of 4000 V (Human Body Model).
