Details

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BUY 256L18B https://www.utsource.net/itm/p/8035449.html

Parameter	Description	Value
Device Type	18-bit Serial EEPROM	256L18B
Memory Size	Total Memory	256 Kbits
Organization	Organization	131,072 x 18
Interface	Communication Interface	SPI
Supply Voltage	Operating Supply Voltage	1.7V to 3.6V
Operating Temp.	Operating Temperature Range	-40°C to +85°C
Data Retention	Data Retention Time	100 years
Write Cycle	Endurance Cycles	1,000,000 cycles
Access Time	Typical Access Time	0.1 μs
Package Type	Package	SOIC-8, TSSOP-8

Instructions for Use:

1. Power Supply Connection: Connect the VCC pin to a supply voltage within the specified range (1.7V to 3.6V). Ground the GND pin.

2. SPI Interface Setup: The device uses an SPI interface. Ensure that the pins are connected as follows:

   • MOSI (Master Out Slave In): Connect to the data output of the master.
   • MISO (Master In Slave Out): Connect to the data input of the master.
   • SCK (Serial Clock): Connect to the clock signal from the master.
   • CS (Chip Select): Active low, connect to the chip select signal from the master.

3. Initialization: Before any read/write operations, ensure the device is selected by pulling the CS pin low.

4. Read Operation:

   • Send the Read command followed by the address to be read.
   • Data can then be read on the MISO line with each clock cycle.

5. Write Operation:

   • Send the Write Enable command.
   • Send the Write command followed by the address and data to be written.
   • After writing, send the Write Disable command to protect the memory.

6. Addressing: Addresses are 18 bits long, allowing access to all memory locations in the device.

7. Error Handling: Implement error checking mechanisms such as verifying write operations by reading back the data.

8. Power Down: When not in use, it's recommended to power down the device or place it in a low-power mode if supported.

9. Handling Precautions: Follow standard ESD (Electrostatic Discharge) precautions when handling the device to avoid damage.

For detailed timing diagrams and specific command codes, refer to the datasheet provided by the manufacturer.

(For reference only)