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MFG:AT D/C:07+
Part Number: AT24C21
MFG: AT
D/C: 07+
Description: The AT24C21 provides 1024 bits of serial electrically erasable and programmable read only memory (EEPROM) organized as ...
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AT24C21
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DataSheet
General Description
AT24C21 General Description
The AT24C21 provides 1024 bits of serial electrically erasable and programmable read only memory (EEPROM) organized as 128 words of 8 bits each. The device is optimized for use in applications requiring data storage and serial transmission of configuration and control information. The AT24C21 features two modes of operation: Transmit-Only Mode and Bidire ctional Mode. Upon power-up, the AT24C21 will be in the Transmit-Only Mode, sending a serial-bit stream of the entire memory contents, clocked via the VCLK pin. The Bidirectional Mode is selected by a valid high-to-low transition on the SCL pin and offers byte selectable read/write capability of the entire memory array. The AT24C21 is available in space saving 8-pin PDIP and 8-pin SOIC packages.
AT24C21 Maximum Ratings
Operating Temperature.................................. -55 to +125
Storage Temperature .....................................-65 to +150
Voltage on Any Pin
with Respect to Ground .....................................1.0V to +7.0V
Maximum Operating Voltage........................................... 6.25V
DC Output Current........................................................ 5.0 mA
Storage Temperature .....................................-65 to +150
Voltage on Any Pin
with Respect to Ground .....................................1.0V to +7.0V
Maximum Operating Voltage........................................... 6.25V
DC Output Current........................................................ 5.0 mA
AT24C21 Features
• 2-Wire Serial Interface
• Schmitt Trigger, Filtered Inputs For Noise Suppression
• DDC1™/ DDC2™ Interface Compliant for Monitor Identification
• Low Voltage Operation
2.5 (VCC = 2.5V to 5.5V)
• Internally Organized 128 x 8
• 100 kHz (2.5V) Compatibility
• 8-Byte Page Write Mode
• Write Protection Available
• Self-timed Write Cycle (10 ms max)
• High Reliability
Endurance: 1 Million Write Cycles
Data Retention: 100 Years
ESD Protection: >3000V
• 8-Pin PDIP and JEDEC SOIC Packages
• Schmitt Trigger, Filtered Inputs For Noise Suppression
• DDC1™/ DDC2™ Interface Compliant for Monitor Identification
• Low Voltage Operation
2.5 (VCC = 2.5V to 5.5V)
• Internally Organized 128 x 8
• 100 kHz (2.5V) Compatibility
• 8-Byte Page Write Mode
• Write Protection Available
• Self-timed Write Cycle (10 ms max)
• High Reliability
Endurance: 1 Million Write Cycles
Data Retention: 100 Years
ESD Protection: >3000V
• 8-Pin PDIP and JEDEC SOIC Packages
AT24C21 Connection Diagram
AT24C21
PDF/DataSheet Download
- Datasheet: AT24C21
- File Size: 191805 KB
- Manufacturer: ATMEL [ATMEL Corporation]
- Click here to Download
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