Details

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BUY AT25256B-SSHL https://www.utsource.net/itm/p/6340902.html

Parameter	Description	Value
Device Type	Serial EEPROM	AT25256B-SSHL
Memory Size	Total Memory	256 Kbit (32 KBytes)
Organization	Memory Organization	32K x 8
Voltage Supply (Vcc)	Operating Voltage Range	1.8V to 5.5V
Standby Current	Current Consumption in Standby Mode	1 渭A (max)
Active Current	Current Consumption in Active Mode	5 mA (max)
Page Write Size	Page Write Size	64 Bytes
Write Cycle Time	Typical Write Cycle Time	5 ms
Interface	Communication Interface	SPI
Clock Speed	Maximum Clock Frequency	50 MHz
Package Type	Package	SOIC-8, TSSOP-8
Operating Temperature	Operating Temperature Range	-40掳C to +85掳C
Endurance	Write/Erase Cycles	1,000,000 cycles
Data Retention	Data Retention Time	100 years

Instructions for Use:

1. Power Supply:

   • Ensure the supply voltage is within the specified range of 1.8V to 5.5V.

2. SPI Configuration:

   • Connect the device using the SPI interface with appropriate pin connections for MOSI, MISO, SCK, and CS.

3. Initialization:

   • Before performing any read/write operations, ensure the device is properly initialized by setting the chip select (CS) pin low.

4. Read Operation:

   • To read data, send a read command followed by the address from which to start reading, then clock out the data bits.

5. Write Operation:

   • For writing, first send a write enable command, then send the write command along with the starting address and data bytes. Wait for the write cycle to complete (typically 5 ms).

6. Page Write:

   • Up to 64 bytes can be written in a single page write operation. Ensure that the write does not cross a page boundary without issuing a new write command.

7. Standby Mode:

   • To minimize power consumption, set the CS pin high when the device is not in use.

8. Temperature Considerations:

   • Ensure the operating temperature stays within the -40掳C to +85掳C range to avoid damage or unreliable performance.

9. Handling Care:

   • Follow standard ESD precautions during handling to prevent damage to the device.

(For reference only)