24LC21 Series
1Kb I2C Serial EEPROM for DDC1™/DDC2™ Monitor Identification
Manufacturer: Microchip Technology
Catalog
1Kb I2C Serial EEPROM for DDC1™/DDC2™ Monitor Identification
| Part | Write Cycle Time - Word, Page | Memory Organization | Memory Size | Package / Case | Package / Case | Package / Case | Operating Temperature [Max] | Operating Temperature [Min] | Memory Interface | Voltage - Supply [Min] | Voltage - Supply [Max] | Memory Format | Memory Type | Technology | Clock Frequency | Mounting Type | Supplier Device Package | Access Time |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Microchip Technology 24LC21A/P | 10 ms | 128 | 1 Kbit | 8-DIP | 0.3 in | 7.62 mm | 70 °C | 0 °C | I2C | 2.5 V | 5.5 V | EEPROM | Non-Volatile | EEPROM | 400 kHz | Through Hole | 8-PDIP | 900 ns |
Microchip Technology 24LC21A/SN | 10 ms | 128 | 1 Kbit | 8-SOIC | 3.9 mm | 70 °C | 0 °C | I2C | 2.5 V | 5.5 V | EEPROM | Non-Volatile | EEPROM | 400 kHz | Surface Mount | 8-SOIC | 900 ns | |
Microchip Technology 24LC21T/SN | 10 ms | 128 | 1 Kbit | 8-SOIC | 3.9 mm | 70 °C | 0 °C | I2C | 2.5 V | 5.5 V | EEPROM | Non-Volatile | EEPROM | 400 kHz | Surface Mount | 8-SOIC | 900 ns | |
Microchip Technology 24LC21-I/SN | 10 ms | 128 | 1 Kbit | 8-SOIC | 3.9 mm | 85 °C | -40 °C | I2C | 2.5 V | 5.5 V | EEPROM | Non-Volatile | EEPROM | 400 kHz | Surface Mount | 8-SOIC | 900 ns | |
Microchip Technology 24LC21AT-I/SN | 10 ms | 128 | 1 Kbit | 8-SOIC | 3.9 mm | 85 °C | -40 °C | I2C | 2.5 V | 5.5 V | EEPROM | Non-Volatile | EEPROM | 400 kHz | Surface Mount | 8-SOIC | 900 ns | |
Microchip Technology 24LC21T-I/SN | 10 ms | 128 | 1 Kbit | 8-SOIC | 3.9 mm | 85 °C | -40 °C | I2C | 2.5 V | 5.5 V | EEPROM | Non-Volatile | EEPROM | 400 kHz | Surface Mount | 8-SOIC | 900 ns | |
Microchip Technology 24LC21/SN | 10 ms | 128 | 1 Kbit | 8-SOIC | 3.9 mm | 70 °C | 0 °C | I2C | 2.5 V | 5.5 V | EEPROM | Non-Volatile | EEPROM | 400 kHz | Surface Mount | 8-SOIC | 900 ns | |
Microchip Technology 24LC21-I/P | 10 ms | 128 | 1 Kbit | 8-DIP | 0.3 in | 7.62 mm | 85 °C | -40 °C | I2C | 2.5 V | 5.5 V | EEPROM | Non-Volatile | EEPROM | 400 kHz | Through Hole | 8-PDIP | 900 ns |
Microchip Technology 24LC21AT/SN | 10 ms | 128 | 1 Kbit | 8-SOIC | 3.9 mm | 70 °C | 0 °C | I2C | 2.5 V | 5.5 V | EEPROM | Non-Volatile | EEPROM | 400 kHz | Surface Mount | 8-SOIC | 900 ns |
Key Features
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Description
AI
The Microchip Technology Inc. 24LC21 is a 128 x 8 bit Electrically Erasable PROM. This device is designed for use in applications requiring storage and serial transmission of configuration and control information. Two modes of operation have been implemented: Transmit-only mode and Bidirectional mode. Upon power-up, the device will be in the Transmit-only mode, sending a serial bit stream of the entire memory array contents, clocked by the VCLK pin. A valid high-to-low transition on the SCL pin will cause the device to enter the Bidirectional mode, with byte selectable read/write capability of the memory array. The 24LC21 is available in a standard 8-pin PDIP and SOIC package, in both commercial and industrial temperature ranges.