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AT24C01D-SSHM-T

MCHPAT24C01D-SSHM-T

Microchip Technology
EEPROM Memory IC 1Kbit I2C 1 MHz 4.5 µs 8-SOIC
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Overview

The AT24C01D-SSHM-T is a 1Kbit serial EEPROM organized as 128 words of 8 bits each, designed for low-power and low-voltage applications. Operating across a 1.7V to 3.6V range, this non-volatile memory utilizes an I2C-compatible interface capable of speeds up to 1 MHz. It is housed in an 8-lead SOIC package and features a hardware write-protect pin for data security.

Why Choose This Part

This device is highly efficient, drawing only 0.4 microamps in standby and 0.5 mA during active reads at 3.6V. Its 1 MHz clock frequency support ensures fast access times of 4.5 microseconds, while the wide voltage range from 1.7V to 3.6V makes it compatible with modern low-voltage microcontrollers.

Applications

Configuration Storage
Maintaining calibration constants, serial numbers, and user preference settings in space-constrained embedded systems.
Peripheral ID
Storing identification and revision data on plug-in cards or expansion modules to facilitate host-side auto-configuration.
Power Cycle Recovery
Recording state variables and error logs that must survive power interruptions in battery-powered IoT devices.

Key Specifications

Technology EEPROM
Access Time 4.5 us
Memory Size 1Kbit
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 128 x 8
Operating Temperature -40degC ~ 85degC (TC)
Supplier Device Package 8-SOIC
Write Cycle Time - Word, Page 5ms

Getting Started

To integrate the AT24C01D, connect the SDA and SCL lines to your microcontroller's I2C pins with appropriate pull-up resistors (typically 4.7k ohms). The WP (Write Protect) pin should be tied to GND for normal operation or VCC to protect the entire memory array from write attempts. Drivers for standard I2C EEPROMs in the AVR or ARM toolchains can be used by targeting device address 0xA0.

Also Consider

AT24C02D-SSHM-T MCHPMicrochip Technology - A drop-in compatible 2Kbit version from the same family for applications requiring double the storage capacity.