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24lc08b-p-eeprom

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Important Note

This entire repo was AI created - including all of the data within. The intent was to A) help me with my personal electronics inventory; and B) see how I could use AI to make that process a bit easier. DO NOT TRUST!

24LC08B-P I2C Serial EEPROM

NOTE: AT24C1024B might be the correct Atmel Part Number

Details

Description

The 24LC08B-P is an 8K-bit (1024 x 8) serial EEPROM from Microchip Technology. This non-volatile memory device uses the I2C protocol for communication and is ideal for storing configuration data, calibration values, and small amounts of user data in embedded systems. The device features a wide operating voltage range and low power consumption, making it suitable for battery-powered applications.

Specifications

Electrical Characteristics

  • Operating Voltage: 2.5V - 5.5V
  • Current: 1mA (write), 1µA (standby)
  • Power: 5mW (typical)
  • Interface: I2C (400 kHz max)

Physical Characteristics

  • Package: 8-pin DIP (0.300” width)
  • Dimensions: 9.27mm x 6.35mm x 3.3mm
  • Weight: ~1g
  • Operating Temperature: 0°C to +70°C (Commercial)

Key Features

  • 8K-bit (1024 x 8) EEPROM memory
  • I2C serial interface (400 kHz)
  • Page write capability (16 bytes)
  • Hardware write protection
  • 1,000,000 erase/write cycles
  • 100-year data retention
  • Self-timed write cycle (5ms typical)

Applications

Common use cases and applications for this component:

  • Configuration data storage
  • Calibration value storage
  • User settings and preferences
  • Serial number storage
  • Small data logging applications
  • Firmware parameter storage

Circuit Examples

Basic I2C Connection

VCC (Pin 8) ---- +5V or +3.3V
GND (Pin 4) ---- Ground
SDA (Pin 5) ---- I2C Data Line (with 4.7kΩ pullup)
SCL (Pin 6) ---- I2C Clock Line (with 4.7kΩ pullup)
WP  (Pin 7) ---- Ground (write enable) or VCC (write protect)
A0  (Pin 1) ---- Ground or VCC (address bit 0)
A1  (Pin 2) ---- Ground or VCC (address bit 1)
A2  (Pin 3) ---- Ground or VCC (address bit 2)

Programming Examples

Arduino Example

#include <Wire.h>
 
#define EEPROM_ADDR 0x50  // Base address (A2,A1,A0 = 0,0,0)
 
void setup() {
  Wire.begin();
  Serial.begin(9600);
 
  // Write data
  writeEEPROM(0x00, 0x42);  // Write 0x42 to address 0x00
 
  // Read data
  byte data = readEEPROM(0x00);
  Serial.print("Read: 0x");
  Serial.println(data, HEX);
}
 
void writeEEPROM(int address, byte data) {
  Wire.beginTransmission(EEPROM_ADDR);
  Wire.write(address);
  Wire.write(data);
  Wire.endTransmission();
  delay(5);  // Write cycle time
}
 
byte readEEPROM(int address) {
  Wire.beginTransmission(EEPROM_ADDR);
  Wire.write(address);
  Wire.endTransmission();
  Wire.requestFrom(EEPROM_ADDR, 1);
  return Wire.read();
}
 
void loop() {
  // Main code here
}

Technical Notes

Important technical considerations, limitations, or special requirements:

  • Requires pullup resistors (4.7kΩ) on SDA and SCL lines
  • Address pins (A0, A1, A2) allow up to 8 devices on same I2C bus
  • Write protection pin (WP) prevents accidental writes when high
  • Page write mode allows writing up to 16 bytes at once
  • 5ms write cycle time must be observed between writes

Tags

eeprom, memory, i2c, serial, non-volatile, microchip cabinet-3 bin-42 status-available

Notes

This is a reliable, industry-standard EEPROM perfect for storing small amounts of non-volatile data. The DIP package makes it breadboard-friendly for prototyping. Compatible with both 3.3V and 5V systems. Consider the 24LC08B-I/P variant for industrial temperature range (-40°C to +85°C) if needed for harsh environments.

Graph View

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