Details

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BUY AT45DB321E-SHF-B https://www.utsource.net/itm/p/12610119.html

Parameter	Description
Device Type	Serial Flash Memory
Manufacturer	ATMEL
Part Number	AT45DB321E-SHF-B
Memory Size	32 Mbit (4M x 8)
Voltage - Supply	VCC = 2.7V to 3.6V
Operating Temperature	-40掳C to +85掳C
Package Type	SOIC-8
Interface	SPI
Clock Frequency	Up to 66 MHz
Standby Current	1 渭A
Active Current	20 mA
Write Cycle Time	4 ms
Endurance	1,000,000 write/erase cycles
Data Retention	20 years

Instructions for Use

1. Power Supply: Ensure the supply voltage is within the specified range of 2.7V to 3.6V.
2. SPI Configuration: Configure the SPI interface with a maximum clock frequency of 66 MHz.
3. Initialization: Upon power-up, initialize the device by sending the appropriate commands as per the datasheet.
4. Read Operations: Perform read operations using the Read Data command.
5. Write Operations: Execute write operations using the Page Program command, ensuring not to exceed the 4ms write cycle time.
6. Erase Operations: Use the Block Erase or Sector Erase commands for erase operations, respecting the endurance limit.
7. Power Management: To minimize power consumption, enter standby mode when the device is not in use.
8. Environmental Conditions: Operate the device within the temperature range of -40掳C to +85掳C to ensure reliable performance.
9. Handling Precautions: Handle the device with care to avoid electrostatic discharge (ESD) damage.

For detailed command sequences and timing diagrams, refer to the official datasheet provided by ATMEL.

(For reference only)