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BUY AT24C01B-PU https://www.utsource.net/itm/p/4146075.html
Two-wire Serial EEPROM 1K (128 x 8) 1 AT24C01 B-PU Datasheets Search Partnumber : Start with "AT24C01 B-PU " - Total : 121 ( 1/5 Page) NO Part no Electronics Description View Electronic Manufacturer 121 AT24C01-10MC 2-Wire Serial EEPROM

Parameter	Description	Value	Unit
Storage Capacity	Total memory capacity	1 Kbit (128 bytes)	-
Organization	Memory organization	128 x 8 bits	-
Supply Voltage (Vcc)	Operating voltage range	1.8 to 5.5	V
Operating Temperature	Range for normal operation	-40 to +85	°C
Write Time	Maximum time to complete a write cycle	5	ms
Read Cycle Time	Maximum time to complete a read cycle	0	ms (Typical)
Data Retention	Guaranteed data retention period	100	years
Endurance	Number of write/erase cycles per cell	1,000,000	-
Package Type	Housing type	8-pin PDIP, SOIC, TSSOP	-
I2C Bus Speed	Maximum bus speed	400	kHz
Standby Current	Current consumption in standby mode	1	μA (Max)
Active Current	Current consumption during active operation	3	mA (Max)

Instructions for Using AT24C01B-PU

1. Power Supply:

   • Connect Vcc to the positive supply voltage (1.8V to 5.5V).
   • Connect GND to the ground.

2. I2C Bus Connection:

   • Connect SDA (Serial Data Line) to the data line of the I2C bus.
   • Connect SCL (Serial Clock Line) to the clock line of the I2C bus.
   • Ensure pull-up resistors are connected to both SDA and SCL lines to Vcc.

3. Address Configuration:

   • The device has three address pins (A0, A1, A2). These can be tied to Vcc or GND to set the I2C address.
   • The default I2C address is 0x50 (1010000 in binary).

4. Write Operation:

   • Start Condition: Initiate a start condition on the I2C bus.
   • Send Device Address: Send the device address followed by a write bit (0).
   • Send Memory Address: Send the memory address where the data will be written.
   • Send Data: Send the data byte to be written.
   • Stop Condition: Terminate the write operation with a stop condition.

5. Read Operation:

   • Start Condition: Initiate a start condition on the I2C bus.
   • Send Device Address: Send the device address followed by a write bit (0).
   • Send Memory Address: Send the memory address from which data will be read.
   • Repeated Start Condition: Initiate another start condition.
   • Send Device Address: Send the device address followed by a read bit (1).
   • Receive Data: Read the data byte from the device.
   • Acknowledge/Nacknowledge: Send an acknowledge (ACK) or not-acknowledge (NACK) signal.
   • Stop Condition: Terminate the read operation with a stop condition.

6. Data Retention and Endurance:

   • Ensure that the device is not subjected to excessive voltage or temperature beyond the specified limits to maintain data retention and endurance.

7. Handling Precautions:

   • Handle the device with care to avoid static discharge.
   • Use proper decoupling capacitors near the power supply pins to ensure stable operation.

8. Storage:

   • Store the device in a dry and cool environment to prevent damage from moisture and extreme temperatures.

(For reference only)