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Description
The AT24C21PC is a 1-kb Serial CMOS EEPROM that is suitable for use in electronic devices. This device is internally organized into 128 words of 8 bits each, and it complies with the Video Electronics Standard Associations (VESA™), Display Data Channel (DDC™) standards for "Plug-and-Play" monitors. The device features two modes - the "transmit-only" mode (DDC1™) and the "bi-directional" mode (DDC2™), which enables it to be used as a read-only or read and write mode following the I2C protocol. The device has a 16-byte page write buffer, and it is available in 8-in DIP, SOIC, TSSOP, MSOP and TDFN packages.
Specifications and features
The main features of the AT24C21PC are:
- DDC1TM/DDC2TM interface compliant for monitor identification
- 400 kHz I2C bus compatible*
- 2.5 to 5.5 volt operation
- 16-byte page write buffer
- Hardware write protect
- Low power CMOS technology
- 1,000,000 program/erase cycles
- 100 year data retention
- 8-pin DIP, SOIC, TSSOP, MSOP or TDFN packages
- Industrial temperature range
Application Scenarios
The AT24C21PC can be used in a variety of electronic devices that require non-volatile storage and have I2C communication capabilities. It is commonly used in "Plug-and-Play" monitors to comply with VESA™ and DDC™ standards, allowing the monitor to be automatically recognized by the system and allowing the system to adjust the display settings accordingly.
Comparison
Advantages- Compliant with Video Electronics Standard Associations (VESA™) and Display Data Channel (DDC™) standards
- Two modes of operation - "transmit-only" mode (DDC1™) and "bi-directional" mode (DDC2™)
- 16-byte page write buffer
- Hardware write protect
- Low power CMOS technology
- 1,000,000 program/erase cycles
- 100 year data retention
- Available in various packages
Disadvantages- Limited storage capacity (1-kb)
- Requires I2C communication capabilities
- Not suitable for applications that require high-speed data transfer
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Datasheet
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Popular parts of the same kind
- Datasheet: Download AT24C21PC
- Chipdatas Part: CD86-AT24C21PC
- Warehouse: China, Hong Kong
- Dispatch: Within 24 hours
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- Last Updated: 2024/10/01 14:47 +0800
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