Details

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BUY 25LC256T-E/SN https://www.utsource.net/itm/p/1906242.html
IC EEPROM 256K SPI 10MHZ 8SOIC

Parameter	Symbol	Conditions	Min	Typical	Max	Unit
Supply Voltage	Vcc	Operating	2.5	-	5.5	V
Standby Current	ISB	Vcc = 2.5V to 5.5V	-	1	-	μA
Active Current	IOP	Vcc = 2.5V to 5.5V	-	3	-	mA
Write Cycle Time	TWC		-	5	-	ms
Page Write Time	TPW		-	5	-	ms
Data Retention Time	TR		-	100	-	years
Operating Temperature	TOPR		-40	-	85	°C
Storage Temperature	TSTG		-65	-	150	°C
Number of Write Cycles	NWC	Per Byte	-	1,000,000	-	cycles
Package Type			-	SOIC-8	-	-

Instructions for 25LC256T-E/SN

1. Power Supply:

   • Ensure the supply voltage (Vcc) is within the range of 2.5V to 5.5V.
   • The device operates with a standby current of approximately 1 μA and an active current of approximately 3 mA.

2. Data Write Operations:

   • Each write cycle takes approximately 5 ms.
   • For page writes, the time is also approximately 5 ms.
   • The device supports up to 1,000,000 write cycles per byte.

3. Temperature Considerations:

   • The operating temperature range is from -40°C to 85°C.
   • The storage temperature range is from -65°C to 150°C.

4. Data Retention:

   • Data retention is guaranteed for up to 100 years under normal operating conditions.

5. Package Information:

   • The 25LC256T-E/SN is available in an SOIC-8 package.

6. Pin Configuration:

   • Pin 1 (Vss): Ground
   • Pin 2 (SI): Serial Input
   • Pin 3 (SCK): Serial Clock
   • Pin 4 (/CS): Chip Select (active low)
   • Pin 5 (SO): Serial Output
   • Pin 6 (/WP): Write Protect (active low)
   • Pin 7 (HOLD): Hold (active low)
   • Pin 8 (Vcc): Power Supply

7. Communication Protocol:

   • The 25LC256T-E/SN uses the SPI (Serial Peripheral Interface) protocol for communication.
   • Ensure that the chip select (/CS) is low during communication.
   • The write protect (/WP) pin can be used to prevent accidental writes when set to low.

8. Programming Commands:

   • Read Data: Send the READ command (0x03) followed by the address and read the data.
   • Write Data: Send the WRITE command (0x02) followed by the address and data to be written.
   • Write Enable: Send the WRITE ENABLE command (0x06) before writing data.
   • Write Disable: Send the WRITE DISABLE command (0x04) to disable writing.
   • Read Status Register: Send the READ STATUS REGISTER command (0x05) to read the status register.
   • Write Status Register: Send the WRITE STATUS REGISTER command (0x01) to write to the status register.

9. Handling Precautions:

   • Handle the device with care to avoid static damage.
   • Ensure proper grounding and decoupling capacitors are used to maintain stable operation.

10. Storage and Handling:

    • Store the device in a dry, cool place to ensure long-term reliability.
    • Follow standard ESD (Electrostatic Discharge) precautions when handling the device.

(For reference only)