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24LC21 数据表(PDF) 1 Page - Microchip Technology |
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24LC21 数据表(HTML) 1 Page - Microchip Technology |
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1 / 24 page  2004 Microchip Technology Inc. DS21095J-page 1 24LC21 Features: • Single supply with operation down to 2.5V • Completely implements DDC1™/DDC2™ interface for monitor identification • Low-power CMOS technology: - 1 mA active current typical -10 µA standby current typical at 5.5V • 2-wire serial interface bus, I2C™ compatible • Self-timed write cycle (including auto-erase) • Page-write buffer for up to 8 bytes • 100 kHz (2.5V) and 400 kHz (5V) compatibility • Factory programming (QTP) available • 1,000,000 erase/write cycles ensured • Data retention > 200 years • 8-pin PDIP and SOIC package • Available for extended temperature ranges Description: 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. Package Types Block Diagram Commercial (C): 0°C to +70°C Industrial (I): -40°C to +85°C NC NC NC VSS 1 2 3 4 8 7 6 5 VCC VCLK SCL SDA NC NC NC VSS 1 2 3 4 8 7 5 5 VCC VCLK SCL SDA PDIP SOIC HV Generator EEPROM Array Page Latches YDEC XDEC Sense Amp R/W Control Memory Control Logic I/O Control Logic VCLK SDA SCL VCC VSS 1K 2.5V Dual Mode I2C™ Serial EEPROM I2C is a trademark of Philips Corporation. DDC is a trademark of the Video Electronics Standards Association. Not recommended for new designs – Please use 24LCS21A. |
类似零件编号 - 24LC21 |
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类似说明 - 24LC21 |
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