Overview
The CAT24C256WI-GT3 is a 256-Kb Serial EEPROM device from onsemi, designed for applications requiring non-volatile memory. It is internally organized as 32,768 words of 8 bits each, or 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 system designs. The CAT24C256WI-GT3 features a 64-byte page write buffer and includes hardware write protection to safeguard the entire memory against unintended write operations.
Key Specifications
| Parameter | Description |
|---|---|
| Memory Size | 256 Kb (32,768 words of 8 bits each) |
| Organization | 512 pages of 64 bytes each |
| I2C Protocol | Standard (100 kHz), Fast (400 kHz), Fast-Plus (1 MHz) |
| Supply Voltage Range | 1.8 V to 5.5 V |
| Page Write Buffer | 64 bytes |
| Write Protection | Hardware write protection via WP pin |
| Addressing | Up to eight devices on the same bus using external address pins |
| Error Correction | On-Chip ECC (Error Correction Code) |
| Temperature Range | Industrial: -40°C to +85°C |
| Package Type | SOIC-8, JEDEC |
| Lead Finish | NiPdAu |
Key Features
- Supports Standard, Fast, and Fast-Plus I2C protocol
- 64-byte page write buffer for efficient data transfer
- Hardware write protection for entire memory via WP pin
- On-Chip ECC (Error Correction Code) for high reliability applications
- External address pins allow up to eight devices on the same bus
- Power-On Reset (POR) to protect against brown-out failure
- Schmitt triggers on SCL and SDA pins for noise immunity
Applications
- Alarm Systems
- Audio Players
- Automotive Systems
- Cable Modems
- CDRW
- 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-GT3?
The CAT24C256WI-GT3 has a memory size of 256 Kb, organized as 32,768 words of 8 bits each or 512 pages of 64 bytes each.
- What I2C protocols does the CAT24C256WI-GT3 support?
The device supports Standard (100 kHz), Fast (400 kHz), and Fast-Plus (1 MHz) I2C protocols.
- What is the supply voltage range for the CAT24C256WI-GT3?
The supply voltage range is from 1.8 V to 5.5 V.
- How does the hardware write protection work on the CAT24C256WI-GT3?
The hardware write protection is activated by taking the WP pin High, which protects the entire memory against write operations.
- What is the purpose of the external address pins on the CAT24C256WI-GT3?
The external address pins allow up to eight CAT24C256 devices to be addressed on the same bus.
- Does the CAT24C256WI-GT3 have any error correction mechanism?
Yes, it features On-Chip ECC (Error Correction Code) for high reliability applications.
- What is the temperature range for the CAT24C256WI-GT3?
The device operates in the industrial temperature range of -40°C to +85°C.
- What package types are available for the CAT24C256WI-GT3?
The device is available in SOIC-8, JEDEC package type.
- What is the lead finish of the CAT24C256WI-GT3?
The lead finish is NiPdAu.
- How does the Power-On Reset (POR) work on the CAT24C256WI-GT3?
The device powers up into Standby mode when VCC exceeds the POR trigger level and powers down into Reset mode when VCC drops below the POR trigger level, protecting against brown-out failure.
