Basic description:

The Microchip Technology Inc. 24AA024/24LC024/ 24AA025/24LC025 is a 2 Kb Serial Electrically Erasable PROM(EEPROM) with a voltage range of 1.7V to 5.5V. It comes with I2C communication capabilities. The device is organized as a single block of 256 x 8-bit memory with a 2-wire serial interface. Low current design permits operation with typical standby and active currents of only 1 A and 1 mA, respectively. The device has a page write capability for up to 16 bytes of data. Functional address lines allow the connection of up to eight 24AA024/24LC024/ 24AA025/24LC025 devices on the same bus for up to 16K bits of contiguous EEPROM memory. The device is available in the standard 8-pin PDIP, 8-pin SOIC (3.90 mm), TSSOP, 2x3 DFN and TDFN and MSOP packages.

Functional description

The 24AA024/24LC024/24AA025/24LC025 supports a bidirectional, 2-wire bus and data transmission protocol. A device that sends data onto the bus is defined as transmitter, while a device receiving data is defined as receiver. The bus has to be controlled by a master device that generates the Serial Clock (SCL), controls the bus access and generates the Start and Stop conditions, while the 24AA024/ 24LC024/24AA025/24LC025 works as slave. Both master and slave can operate as transmitter or receiver, but the master device determines which mode is activated.

Noise Protection info

The 24AA024/24LC024/24AA025/24LC025 employs a VCC threshold detector circuit which disables the internal erase/write logic if the VCC is below 1.5V at
nominal conditions. The SCL and SDA inputs have Schmitt Trigger and filter circuits which suppress noise spikes to assure proper device operation, even on a noisy bus.

Features of the Chip:

• Single Supply with Operation from 1.7V to 5.5V for 24AA024/24AA025 Devices, 2.5V for 24LC024/24LC025 Devices
• Low-Power CMOS Technology:
- Read current 1 mA, typical
- Standby current 1 μA, typical
• 2-Wire Serial Interface, I2C™ Compatible
• Cascadable up to Eight Devices
• Schmitt Trigger Inputs for Noise Suppression
• Output Slope Control to Eliminate Ground Bounce
• 100 kHz and 400 kHz Clock Compatibility
• Page Write Time 5 ms Maximum
• Self-timed Erase/Write Cycle
• 16-Byte Page Write Buffer
• Hardware Write-Protect on 24XX024 Devices
• ESD Protection >4,000V
• More than 1 Million Erase/Write Cycles
• Data Retention >200 years
• Factory Programming Available
• Packages include 8-lead PDIP, SOIC, TSSOP, DFN, TDFN and MSOP
• Pb-Free and RoHS Compliant
• Temperature Ranges:
- Industrial (I): -40°C to +85°C
- Automotive (E): -40°C to +125°C

Applications:

This EEPROM chip can be used for any embedded system memory requirement.

24AA024/24LC024/24AA025/24LC025