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AT24C04D-SSHM-T

MCHPAT24C04D-SSHM-T

Microchip Technology
Same AT24C family with 4-Kbit capacity for lower-cost or smaller storage needs while keeping pinout and driver compatibility.
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Overview

The AT24C04D-SSHM-T is a 4-Kbit serial EEPROM organized as 512 bytes of 8 bits each, designed for low-power and low-voltage applications. Operating over a 1.7V to 3.6V range, it supports I2C clock frequencies up to 1 MHz and features a 16-byte page write mode. The device includes a dedicated hardware write protect pin and Schmitt triggers on inputs for enhanced noise suppression in industrial environments.

Why Choose This Part

This EEPROM offers high reliability with 100-year data retention and robust noise suppression via filtered inputs. Its low standby current of 0.8 uA makes it ideal for battery-powered designs requiring occasional non-volatile updates.

Applications

Configuration Storage
Storing calibration constants, hardware IDs, and boot configuration data in space-constrained embedded systems.
User Preference Logging
Retaining user-defined settings and state information that must persist across power cycles in consumer electronics.
System Event Counters
Tracking usage metrics and error logs thanks to its endurance of 1,000,000 write cycles.

Key Specifications

Technology EEPROM
Access Time 450 ns
Memory Size 4Kbit
Memory Type Non-Volatile
Memory Format EEPROM
Mounting Type Surface Mount
Package / Case 8-SOIC (0.154", 3.90mm Width)
Clock Frequency 1 MHz
Memory Interface I2C
Voltage - Supply 1.7V ~ 3.6V
Memory Organization 512 x 8
Operating Temperature -40degC ~ 85degC (TA)
Supplier Device Package 8-SOIC
Write Cycle Time - Word, Page 5ms

Getting Started

To interface with the AT24C04D, connect the SCL and SDA pins to your microcontroller's I2C bus with appropriate pull-up resistors. Ensure the WP pin is tied to GND for write operations or VCC for hardware protection, and use standard I2C libraries to perform 16-byte page writes or random reads.

Also Consider

24LC04B-I/SN MCHPMicrochip Technology - A common 4-Kbit alternative with a wider supply voltage range up to 5.5V for legacy 5V systems.
AT24C08D-SSHM-T MCHPMicrochip Technology - A pin-compatible 8-Kbit version for designs that require double the memory capacity in the same SOIC-8 footprint.
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