AT24C32 IC Two-Wire Serial EEPROM
AT24C32 IC Two-Wire Serial EEPROM is Serial Electrically Erasable PROM of 4K x 8 (32Kbit). It is specially designed for low power advanced, applications such as personal communications or data acquisition. It is the standard 8-pin plastic DIP, and 8-pin surface mount SOIC packages. 24C32 detail is given below.
AT24C32 IC Two-Wire Serial EEPROM Pin-out Configuration
AT24C32 Specifications and Features
Equivalent Of AT24C32 IC
24LC512, 24C04 are the same as AT24C32
Replacement For AT24C32 IC
You can replace it with EEPROM’S: 24LC1026, AT24C256, 25LC050
How to Use AT24C32 IC
Its interface is very easy you can easily connect it with a microcontroller by using only 5 pins. The interfacing diagram for AT24C32 IC is given below.
Pin 6 of AT24C32 IC is connected to the Serial clock pin of the microcontroller and the Serial Data pin 5 is connected to the Serial Data pin (SDA) of the microcontroller. The SCK and SDA pins are pulled high using two pull-up resistors (4.7k). This will keep the bus at high state during the off condition.
Select pins A0, A1, and A2 are only useful if more than one EEPROM is connected to the same microcontroller otherwise these pins can be grounded directly. In the above circuit diagram, we have connected the three pins to the PIO pins so that we can use more than one EEPROM IC if required.
Pin 7 is provided for improving data security in the AT24C32 IC. Data can be written/erased only if the WP pin is held low (logic 0). On the other condition the data written on the EEPROM will remain unchanged.