Overview
The CAV25256VE-GT3 is a 256-Kb Serial SPI EEPROM device produced by onsemi, designed for high-reliability applications, particularly in the automotive sector. This device is internally organized as 32Kx8 bits and features a 64-byte page write buffer. It supports the Serial Peripheral Interface (SPI) protocol and is qualified to Automotive AEC-Q100 Grade 1 standards, operating within a temperature range of -40°C to +125°C.
The device includes several key features such as software and hardware write protection, on-chip Error Correction Code (ECC), and low power CMOS technology. It is available in an 8-lead SOIC package and is Pb-free, halogen-free, and RoHS compliant.
Key Specifications
| Parameter | Min | Max | Units |
|---|---|---|---|
| Operating Temperature | -40 | +125 | °C |
| Storage Temperature | -65 | +150 | °C |
| Supply Voltage Range | 2.5 | 5.5 | V |
| Clock Frequency | DC | 10 | MHz |
| Supply Current (Read Mode) | 2 | mA | |
| Supply Current (Write Mode) | 2 | mA | |
| Standby Current | 5 | μA | |
| Input Leakage Current | -2 | 2 | μA |
| Output Leakage Current | -2 | 2 | μA |
| Input Low Voltage | -0.5 | 0.3 VCC | V |
| Input High Voltage | 0.7 VCC | VCC + 0.5 | V |
| Output Low Voltage | 0.4 | V | |
| Output High Voltage | VCC - 0.8 | V | |
| Program/Erase Cycles | 1,000,000 | Cycles | |
| Data Retention | 100 | Years |
Key Features
- Automotive AEC-Q100 Grade 1 Qualified (-40°C to +125°C)
- 10 MHz (5 V) SPI Compatible
- 2.5 V to 5.5 V Supply Voltage Range
- SPI Modes (0,0) & (1,1)
- 64-byte Page Write Buffer
- Additional Identification Page with Permanent Write Protection
- Self-timed Write Cycle
- Hardware and Software Protection
- Block Write Protection - Protect 1/4, 1/2 or Entire EEPROM Array
- Low Power CMOS Technology
- 1,000,000 Program/Erase Cycles
- 100 Year Data Retention
- 8-lead SOIC, TSSOP, and 8-Ball WLCSP Packages
- Pb-free, Halogen Free/BFR Free, and RoHS Compliant
Applications
The CAV25256VE-GT3 is designed for use in various high-reliability applications, particularly in the automotive sector. It is suitable for:
- Automotive control units and sensors
- Industrial control systems
- Medical devices requiring high data integrity
- Aerospace and defense applications
- Any system requiring non-volatile memory with robust write protection and ECC
Q & A
- What is the operating temperature range of the CAV25256VE-GT3?
The operating temperature range is -40°C to +125°C.
- What is the supply voltage range for this device?
The supply voltage range is 2.5 V to 5.5 V.
- What are the supported SPI modes?
The device supports SPI modes (0,0) and (1,1).
- What is the maximum clock frequency?
The maximum clock frequency is 10 MHz.
- How many program/erase cycles does the device support?
The device supports up to 1,000,000 program/erase cycles.
- What is the data retention period?
The data retention period is 100 years.
- Does the device have write protection features?
Yes, it features hardware and software write protection, including block write protection.
- What types of packages are available for this device?
The device is available in 8-lead SOIC, TSSOP, and 8-Ball WLCSP packages.
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Yes, the device is Pb-free, halogen-free, and RoHS compliant.
- How does the HOLD input function?
The HOLD input can be used to pause communication between the host and the CAV25256 device by taking HOLD low while SCK is low.
- What is the purpose of the additional Identification Page?
The additional Identification Page (64 bytes) can be accessed for read and write operations and can be made permanent write protected.
