24LC21A

The Microchip Technology Inc. 24LC21A is a 128 x 8-bit dual-mode 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 memory array from 00h to 7Fh, clocked by the VCLK pin. A valid high-to-low transition on the SCL pin will cause the device to enter the transition mode, and look for a valid control byte on the I2C™Compatible bus. If it detects a valid control byte from the master, it will switch into Bidirectional mode, with byte selectable read/write capability of the memory array using SCL. If no control byte is received, the device will revert to the Transmit-Only mode after it receives 128 consecutive VCLK pulses while the SCL pin is idle. The 24LC21A is available in a standard 8-pin PDIP and SOIC package in industrial temperature range.

产品特性
  • Single Supply with Operation Down to 2.5V
  • Completely Implements DDC1™/DDC2™Interface for Monitor Identification, IncludingRecovery to DDC1
  • Pin and Function Compatible with 24LC21
  • Low-Power CMOS Technology
  • 2-Wire Serial Interface Bus, I2C™ Compatible
  • 100 kHz (2.5V) and 400 kHz (5V) Compatibility
  • Self-Timed Write Cycle (including auto-erase)
  • Page Write Buffer for up to Eight Bytes
  • 1,000,000 Erase/Write Cycles Ensured
  • Data Retention > 200 years
技术参数
Parameter Name Value Value
Density 1K bits (x8) 1K bits (x8)
Op. Volt Range (V) 2.5 to 5.5 2.5 to 5.5
Max. Clock Freq. 400 kHz 400 kHz
Page Size (bytes) 8 8
Temp Range (°C) -40°C to +85°C -40°C to +85°C
Endurance 1,000,000 1,000,000
文档资料
24LC21A Data SheetData Sheets07/15/2008337KB
AN1019 - EEPROM Endurance TutorialAppNote12/23/2005175KB
AN1028 - Recommended Usage of Microchip I2C? Serial EEPROM DevicesAppNote03/16/2007237KB
AN1079 - Using the C30 Compiler and the I2C? Peripheral to Interface Serial EEPROMs with dsPIC33FAppNote03/16/2007515KB
AN1100 - Using the C30 Compiler to Interface Serial EEPROMs with dsPIC33FAppNote06/28/2007416KB
AN1113 - Using C and a Hardware Module to Interface 8051 MCUs with I2C Serial EEPROMsAppNote05/15/2008267KB
AN1147 - Interfacing 8051 MCUs with I2C Serial EEPROMsAppNote05/22/2008260KB
AN1190 - Using ASM and a Hardware Module to Interface 8051 MCUs with I2C(TM) Serial EEPROMsAppNote06/10/2008261KB
AN1195 - Using C to Interface 8051 MCUs with I2C(TM) Serial EEPROMsAppNote05/22/2008270KB
AN1418 - Adding Flexibility by Using Multiple Footprints for I2C Serial EEPROMsAppNote11/28/2011378KB
AN974 - Interfacing I2CTM Serial EEPROMs to PICmicro® MicrocontrollersAppNote12/09/2005347KB
AN976 - Using the MSSP Module to Interface I2C? Serial EEPROMs with PIC16 DevicesAppNote02/28/2005334KB
AN979 - Interfacing I2C? Serial EEPROMs to PIC18 DevicesAppNote02/25/2005345KB
AN982 - Interfacing I2C Serial EEPROMs to PIC10 and PIC12 DevicesAppNote04/04/2005444KB
AN989 - Using the MSSP Module to Interface I2C? Serial EEPROMs with PIC18 DevicesAppNote05/16/2005335KB
AN991 - Using the C18 Compiler and the MSSP to Interface I2C? EEPROMs with PIC18 DevicesAppNote05/24/2005336KB
AN997 - Using the C18 Compiler to Interface I2C? Serial EEPROMs with PIC18 DevicesAppNote06/29/2005358KB
Memory Products BrochureBrochures02/05/20154696KB
Electronic Solutions for Medical and FitnessBrochures09/10/201410216KB
Serial EEPROM - Automotive BrochureBrochures07/22/2010725KB
MPLAB® X IDE Product OverviewSell Sheets07/11/2011182KB
I2C Serial EEPROM Usage RecommendationsWebinars01/27/201045050KB
MPLAB® Starter Kit for Serial Memory ProductsWebinars01/27/201065664KB
Serial EEPROM EnduranceWebinars01/27/201031187KB
Serial EEPROM OverviewWebinars01/27/201038593KB
Tiny EEPROM PackagesWebinars01/27/201033683KB
Serial EEPROM Cross Reference GuideCross Reference12/20/2005471KB
Corporate Product Selector GuideProduct Line Card04/13/201610173KB
I2C? Serial EEPROM Usage RecommendationsVideo07/17/200968191KB
订购型号
Part NumberLeadsPackage TypeTemp RangePacking1+26+100+1000+5000+
24LC21A/P8PDIP0C to +70CTUBE0.440.430.410.390.36
24LC21A/SN8SOIC0C to +70CTUBE0.380.370.350.330.31
24LC21A-I/P8PDIP-40C to +85CTUBE0.440.430.410.390.36
24LC21A-I/SN8SOIC-40C to +85CTUBE0.380.370.350.330.31
24LC21AT/SN8SOIC0C to +70CT/R0.380.370.350.330.31
24LC21AT-I/SN8SOIC-40C to +85CT/R0.380.370.350.330.31
相关开发工具
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ProductMemory SizeMemory SpeedPackagePrice5K
24AA011K400 kHzDFN-8, MSOP-8, PDIP-8, SC-70-5, SOIC 150mil-8, SOT-23-5, TDFN-8, TSSOP-8$0.14
24AA0141K400 kHzDFN-8, MSOP-8, PDIP-8, SOIC 150mil-8, SOT-23-6, TDFN-8, TSSOP-8$0.19
24AA014H1K400 kHzMSOP-8, PDIP-8, SOIC 150mil-8, TDFN-8, TSSOP-8$0.20
24AA01H1K400 kHzMSOP-8, PDIP-8, SC-70-5, SOIC 150mil-8, SOT-23-5, TDFN-8, TSSOP-8$0.14
24C01C1K400 kHzDFN-8, MSOP-8, PDIP-8, SOIC 150mil-8, SOT-23-6, TDFN-8, TSSOP-8$0.19
24LC0141K400 kHzDFN-8, MSOP-8, PDIP-8, SOIC 150mil-8, SOT-23-6, TDFN-8, TSSOP-8$0.19
24LC014H1K1000 kHzMSOP-8, PDIP-8, SOIC 150mil-8, TDFN-8, TSSOP-8$0.20
24LC01B1K400 kHzDFN-8, MSOP-8, PDIP-8, SC-70-5, SOIC 150mil-8, SOT-23-5, TDFN-8, TSSOP-8$0.14
24LC01BH1K400 kHzMSOP-8, PDIP-8, SC-70-5, SOIC 150mil-8, SOT-23-5, TDFN-8, TSSOP-8$0.14
24LC21A1K400 kHzPDIP-8, SOIC 150mil-8$0.29
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24VL0141K400 kHzMSOP-8, PDIP-8, SOIC 150mil-8, SOT-23-6, TDFN-8, TSSOP-8$0.29
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器件无铅环保信息
PartNumberDeviceWeightShippingWeightLeadCountPackageTypePackageWidthSolderCompositionJEDECIndicatorRoHSChinaEFUP
24LC21A-I/P0.4867000.9000008PDIP.300inMatte Tine3
24LC21A/P0.4867000.9000008PDIP.300inMatte Tine3
24LC21A/SN0.0780000.1600008SOIC.150In(3.90mm)Matte Tine3
24LC21A-I/SN0.0780000.1600008SOIC.150In(3.90mm)Matte Tine3
24LC21AT/SN0.0780000.2303038SOIC.150In(3.90mm)Matte Tine3
24LC21AT-I/SN0.0780000.2303038SOIC.150In(3.90mm)Matte Tine3
24LC21A Data Sheet 24LC21A
AN1019 24VL024H
AN1028 24VL014
AN1079 24VL025
AN1079 Source Code 24VL025
AN1100 24VL024
Using the C30 Compiler to Interface Serial EEPROMs with dsPIC33F 24VL024
AN1113 24VL014H
AN1113 Source Code 24VL014H
AN1147 24VL024H
AN1147 Source Code 24VL024H
AN1190 24VL024H
AN1190 Source Code 24VL024H
AN1190 Source Code 24VL024H
AN1195 24VL014H
AN1195 Source Code 24VL014H
AN1418 24VL025
AN974 24VL025
Interfacing I2C? Serial EEPROMs to PICmicro® Microcontrollers 24VL025
AN976 24VL025
AN976 Source Code 24VL025
AN979 24VL025
Interfacing I2C? Serial EEPROMs to PIC18 Devices 24VL025
AN982 24VL024
AN982 Source Code 24VL024
AN989 24AA02E48
Using the MSSP Module to Interface I2C? Serial EEPROMs with PIC18 Devices 24AA02E48
AN991 24VL025
AN991 Source Code 24VL025
AN997 24AA025E48
AN997 Source Code 24AA025E48
Memory Products Brochure SST49LF080A
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Serial EEPROM - Automotive Brochure 24VL025
MPLAB® X IDE Product Overview 24VL025
Download Recorded Presentation File (slides + audio): 24VL025
Download Presentation File(slides + text) in .pdf format: 24VL025
Download Recorded Presentation File (slides + audio): 24VL025
Download Presentation File(slides + text) in .pdf format: 24VL025
Download Recorded Presentation File (slides + audio): 24VL025
Download Presentation File(slides + text) in .pdf format: 24VL025
Download Recorded Presentation File (slides + audio): 24VL025
Download Presentation File(slides + text) in .pdf format: 24VL025
Download Recorded Presentation File (slides + audio): 24VL025
Download Presentation File(slides + text) in .pdf format: 24VL025
Serial EEPROM Cross Reference Guide 24LCS22A
Corporate Product Selector Guide SST49LF080A
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