Overview
The CAT24C256WI-G is a 256-Kbit Serial EEPROM memory device produced by onsemi. It is internally organized as 32,768 words of 8 bits each, arranged in 512 pages of 64 bytes each. This device supports the Standard (100 kHz), Fast (400 kHz), and Fast-Plus (1 MHz) I2C protocol, making it versatile for various applications. The CAT24C256WI-G features a 64-byte page write buffer and includes hardware write protection, on-chip ECC (Error Correction Code), and low power CMOS technology, ensuring high reliability and efficiency.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Memory Size | 256kbit | |
| Interface Type | Serial-I2C | |
| Package Type | SOIC | |
| Mounting Type | Surface Mount | |
| Pin Count | 8 | |
| Organisation | 32K x 8 bit | |
| Minimum Operating Supply Voltage | 1.8 V | V |
| Maximum Operating Supply Voltage | 5.5 V | V |
| Programming Voltage | 1.8 → 5.5V | V |
| Number of Bits per Word | 8bit | |
| Dimensions | 5 x 4 x 1.5mm | mm |
| Maximum Operating Temperature | +85 °C | °C |
| Minimum Operating Temperature | -40 °C | °C |
| Automotive Standard | AEC-Q100 | |
| Data Retention | 100 years | years |
| Maximum Random Access Time | 3500ns | ns |
| Number of Words | 32K |
Key Features
- Supports Standard, Fast, and Fast-Plus I2C protocol (100 kHz, 400 kHz, and 1 MHz respectively)
- 64-byte page write buffer
- Hardware write protection for entire memory via WP pin
- Schmitt Triggers and Noise Suppression Filters on I2C bus inputs (SCL and SDA)
- Low Power CMOS Technology
- 1,000,000 program/erase cycles
- 100-year data retention
- Industrial and extended temperature range (-40°C to +85°C)
- Pb-Free, Halogen Free/BFR Free, and RoHS Compliant
- On-Chip ECC (Error Correction Code) for high reliability applications
Applications
- Automotive Systems
- Alarm Systems
- Audio Players
- Cable Modems
- Cellular Phones
- Cordless Phones
- CRT/LCD Monitors
- Digital Still Cameras
- DRAM Modules
- DVD Players
- Graphic Cards
- Hard Disk Drives
- Health Meters
- Industrial Controls
- Internet Phone Handsets
- Memory Modules
- Notebook PC
- Personal Computers
- Printers
- Set Top Box
- Smart Phones
- TV
- Telecommunications
- Two Way Radios
- Video Games
- Video Tape Recorder
- Vending Machines
- Wireless LANs
Q & A
- What is the memory size of the CAT24C256WI-G?
The memory size is 256kbit, organized as 32,768 words of 8 bits each. - What types of I2C protocols does the CAT24C256WI-G support?
The device supports Standard (100 kHz), Fast (400 kHz), and Fast-Plus (1 MHz) I2C protocols. - How is the memory protected against write operations?
The memory can be protected by taking the WP pin High. - What is the operating temperature range of the CAT24C256WI-G?
The operating temperature range is -40°C to +85°C. - What is the data retention period of the CAT24C256WI-G?
The data retention period is 100 years. - How many program/erase cycles does the CAT24C256WI-G support?
The device supports 1,000,000 program/erase cycles. - Is the CAT24C256WI-G RoHS compliant?
Yes, the device is Pb-Free, Halogen Free/BFR Free, and RoHS Compliant. - What types of packages are available for the CAT24C256WI-G?
The device is available in SOIC, TSSOP, and UDFN packages. - Can multiple CAT24C256WI-G devices be connected to the same bus?
Yes, up to eight devices can be connected to the same bus using external address pins. - What is the maximum random access time of the CAT24C256WI-G?
The maximum random access time is 3500ns.
