AT24C04D-MAHM-E

Memory IC Overview

The AT24C04D-MAHM-E is a 4-Kbit (512 x 8) serial electrically erasable and programmable read-only memory (EEPROM) manufactured by Microchip Technology. It operates within a supply voltage range of 1.7V to 3.6V and supports I2C-compatible 2-wire serial interfaces, including Standard Mode at 100kHz, Fast Mode at 400kHz, and Fast Mode Plus at 1MHz. The device features an 8-pad UDFN package, industrial temperature operation from -40°C to +85°C, and hardware write protection via the WP pin.

Memory IC Feature Summary

• Supports bidirectional data transfer over a 2-wire serial interface with integrated noise suppression filters and Schmitt triggers.
• Provides full array hardware data protection through a dedicated write protect pin that inhibits all write operations when asserted.
• Enables efficient data management through a 16-byte page write mode allowing partial page writes without affecting other data in the page.

Memory IC Applications

• Industrial and commercial systems requiring low power and low voltage operation
• Embedded controllers needing non-volatile storage for configuration data
• Multi-device bus architectures utilizing cascadable addressing

Memory IC Procurement Notes

Verify the specific ordering suffix matches the required package type and environmental compliance standards. Confirm the manufacturer designation aligns with current Microchip or Atmel branding as legacy naming conventions may apply. Ensure the component meets the intended operating temperature range and voltage specifications for the target application environment before finalizing procurement.

Memory IC Selection Notes

Select this component for designs requiring small form factor memory solutions with robust noise immunity. The UDFN package offers space-saving benefits for dense PCB layouts. Consider the internal pull-down mechanisms on address pins when designing circuit connections to ensure stable logic states during idle periods.

Memory IC Part Context

This part belongs to the AT24C04D family of serial EEPROMs designed for applications where data retention and low power consumption are critical. The family supports multiple package options including SOIC, TSSOP, and UDFN, providing flexibility for various board design constraints while maintaining consistent electrical characteristics across the series.

Memory IC Replacement Considerations

AT24C04D-SSHM-T

Memory IC FAQ

How does the device handle unconnected address pins?

The A1 and A2 pins utilize an internal proprietary circuit that automatically biases them to a Logic 0 state if left floating, ensuring a defined default address configuration.

What is the behavior of the write protect pin?

Connecting the WP pin to VCC inhibits all write operations to the memory array, while connecting it to GND enables normal write operations.