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AT24C04C-MAHM-T

4Kb I2C EEPROM, 512x8, 1MHz, 1M cycles, 8-UDFN 2x3mm

26126

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جزء الشركة المصنعة ： جزء الشركة المصنعة

AT24C04C-MAHM-T

الحزمة ： الحزمة

8-UDFN (2 x 3 mm) Exposed Pad

الوصف

نظرة عامة على المنتج

The AT24C04C-MAHM-T is a 4Kb I2C serial EEPROM from Microchip Technology organized as 512 x 8 bits, supporting 400 kHz (1.7V) and 1 MHz (>2.5V) clock rates with 1 million write cycle endurance and 100-year data retention in an 8-pin UDFN (2x3mm) package.

المواصفات الرئيسية

Memory Size	4Kbit (512 x 8)
الواجهة	I2C (2-wire)
الحد الأقصى لتردد الساعة	1 MHz (>2.5V), 400 kHz (1.7V)
Page Size	16 bytes
Write Cycle Time	5 ms max (self-timed)
Access Time	550 ns
Endurance	1,000,000 write cycles
الاحتفاظ بالبيانات	> 100 years
جهد الإمداد	1.7 V to 5.5 V
التيار الاحتياطي	6 µA max
درجة حرارة التشغيل	-40 درجة مئوية إلى +85 درجة مئوية
الحزمة	8-UDFN (2 x 3 mm) Exposed Pad

الميزات

Dual-speed I2C: 400 kHz at 1.7V, 1 MHz above 2.5V
Hardware write-protect pin for data protection
Supports up to 4 devices on a single bus
Schmitt trigger filtered inputs for noise suppression
Self-timed write cycle (5 ms max)
1 million erase/write cycle endurance
100-year data retention
Automotive qualified version available

التطبيقات

Configuration and calibration storage
Industrial and consumer electronics
Automotive systems
Embedded parameter storage
Smart sensors and metering

مقدمة المنتج:AT24C04C-MAHM-T مقدمة المنتج

The AT24C04C-MAHM-T is a 4Kb I2C-compatible serial EEPROM from Microchip Technology organized as 512 x 8 bits. It supports dual-speed operation at 400 kHz from 1.7V supply and 1 MHz above 2.5V, providing flexibility across voltage ranges. The device features a hardware write-protect pin, Schmitt trigger filtered inputs for noise suppression, self-timed write cycles (5 ms max), 1 million write cycle endurance, and greater than 100-year data retention. The compact 8-pin UDFN (2x3mm) package with exposed pad is ideal for space-constrained applications. The device supports up to 4 devices on a single I2C bus via configurable address pins.

مبدأ العمل:AT24C04C-MAHM-T مبدأ العمل

The AT24C04C uses a standard I2C protocol with START, STOP, and ACK conditions for communication. The bus protocol begins with a START condition followed by the device address byte (1010+A2+A1+A0+R/W), where the lower address bits select one of up to 4 devices on the bus. For write operations, the master sends the word address followed by data bytes (up to 16 bytes per page write). The device acknowledges each byte and performs the write internally within 5 ms (self-timed). For read operations, the master writes the address byte then issues a repeated START with the R/W bit set to 1. The device then outputs data bytes sequentially. The Schmitt trigger inputs filter noise on SDA and SCL lines. The hardware write-protect pin (WP) blocks write operations to the entire array when held high, protecting critical data from accidental modification.

وصف الدبوس:AT24C04C-MAHM-T تعريف الدبوس ووظائفه

دبوس	الاسم	النوع	الوصف
1	A0	المدخلات	Address bit 0 (connect to VCC or GND)
2	A1	المدخلات	Address bit 1 (connect to VCC or GND)
3	A2	المدخلات	Address bit 2 (connect to VCC or GND)
4	GND	الطاقة	أرضي
5	SDA	الإدخال/الإخراج	Serial data (open-drain, bidirectional)
6	SCL	المدخلات	Serial clock input
7	WP	المدخلات	Write protect (HIGH = write protected)
8	VCC	الطاقة	Supply voltage (1.7V to 5.5V)

Application Scenarios:In which products and applications isAT24C04C-MAHM-T مستعمل

Configuration Storage: Non-volatile 4Kb storage for device settings and calibration coefficients with 1M write cycle endurance
Industrial Electronics: Wide 1.7V-5.5V operation and Schmitt trigger inputs for noisy industrial environments
Automotive Systems: Automotive-grade version available for ECU parameter storage in -40°C to +125°C environments
Smart Sensors: Compact UDFN package fits alongside sensor ICs for on-board calibration data storage
Multi-Device Bus: 4 addressable devices per bus allows distributed EEPROM across system modules

Alternative Models:What chips are recommended as replacements for AT24C04C-MAHM-T

الطراز	الشركة المصنعة	الفرق الرئيسي
AT24C08C-MAHM-T	الرقاقة الدقيقة	8Kbit (1024×8), same package
AT24C04C-SSHM-T	الرقاقة الدقيقة	Same, 8-SOIC package
24AA04-I/MC	الرقاقة الدقيقة	4Kb, TSSOP-8, older series
BR24G04FVT-WE2	روهم	4Kb I2C EEPROM, TSSOP-8
CAT24C04WI-GT3	أونسمي	4Kb I2C EEPROM, TSSOP-8