AT24C04C-SSHM-T: High-Performance 4Kbit EEPROM IC by Microchip Technology

The AT24C04C-SSHM-T from Microchip Technology is a cutting-edge 4Kbit EEPROM memory IC designed for applications demanding reliable non-volatile data storage. This comprehensive guide explores its features, specifications, and applications to help engineers and designers make informed decisions for their projects.

Product Overview

The AT24C04C-SSHM-T represents Microchip's commitment to high-quality memory solutions. As part of the AT24C series, this EEPROM offers:

• 4Kbit (512 x 8) memory organization
• Industry-standard I2C serial interface
• Wide voltage operation from 1.7V to 5.5V
• Extended temperature range (-40 C to +85 C)

Technical Specifications

Memory Architecture

The device features:

• Memory Size: 4Kbit organized as 512 bytes x 8 bits
• Page Size: 16-byte page write buffer
• Endurance: 1,000,000 write cycles
• Data Retention: 100 years

Interface Characteristics

• I2C Interface: Supports standard (100kHz) and fast (400kHz) modes plus 1MHz high-speed mode
• Device Addressing: Three hardware address pins support up to eight devices on the same bus
• Write Protection: Hardware write-protect pin for data security

Performance Metrics

• Access Time: 550ns maximum
• Write Cycle Time: 5ms maximum (byte or page write)
• Standby Current: 6 A maximum at 5.5V

Package and Physical Characteristics

The AT24C04C-SSHM-T comes in an industry-standard 8-lead SOIC package:

• Package Dimensions: 4.9mm x 3.9mm x 1.75mm
• Pin Count: 8
• Mounting: Surface mount (SMD)
• RoHS Compliance: Fully compliant with RoHS directives

Key Advantages

1. Enhanced Reliability

The AT24C04C-SSHM-T features:

• Advanced EEPROM technology for stable data retention
• Built-in error detection mechanisms
• Robust ESD protection (>4kV HBM)

2. Power Efficiency

Designed for low-power applications:

• Active current: 1mA (typical) at 1MHz
• Automatic power-down when idle
• Wide voltage range supports battery-powered devices

3. Design Flexibility

• Pin-compatible with other AT24C series devices
• Software compatible with industry-standard EEPROMs
• Multiple package options available

Application Scenarios

Industrial Automation

Ideal for:

• PLC parameter storage
• Sensor calibration data
• Equipment configuration settings

Consumer Electronics

Common uses include:

• Smart home device configurations
• Wearable device data storage
• Appliance settings memory

Automotive Systems

Reliable operation for:

• Infotainment system preferences
• ECU parameter storage
• Telematics data logging

Design Considerations

PCB Layout Recommendations

• Keep I2C traces short and properly terminated
• Provide adequate power supply decoupling
• Follow ESD protection guidelines

Software Implementation

• Implement proper I2C bus arbitration
• Include write cycle completion verification
• Consider wear-leveling algorithms for frequent writes

Comparison with Competing Devices

The AT24C04C-SSHM-T offers distinct advantages over similar EEPROMs:

• Higher speed (1MHz) than many 400kHz competitors
• Smaller package options available
• Proven reliability from Microchip's quality processes

Ordering Information

The device is available:

• Base Part Number: AT24C04C
• Package Code: SSHM-T (8-lead SOIC, tape and reel)
• Lead Time: Typically in stock at major distributors

Conclusion

The AT24C04C-SSHM-T from Microchip Technology represents an optimal solution for applications requiring reliable, non-volatile memory in a compact form factor. Its combination of performance, reliability, and design flexibility makes it a preferred choice for engineers across multiple industries.

For technical documentation, design resources, or purchasing information, visit Microchip's official website or contact authorized distributors.