AT25SF321B-SSHB-B - Adesto Technologies

AT25SF321B-SSHB-B Frequently Asked Questions (FAQs)

• What is the maximum number of write cycles for the AT25SF321B-SSHB-B?
  The AT25SF321B-SSHB-B has a minimum of 100,000 write cycles, but the actual number of write cycles may vary depending on the usage and operating conditions.
• How does the AT25SF321B-SSHB-B handle page writes and block erases?
  The AT25SF321B-SSHB-B uses a page-based write architecture, where data is written in pages of 256 bytes. The device also supports block erase, where a block of 64KB can be erased at once.
• What is the purpose of the WP# pin on the AT25SF321B-SSHB-B?
  The WP# (Write Protect) pin is used to prevent accidental writes to the device. When the WP# pin is low, the device is in a write-protected state, and any write attempts will be ignored.
• Can the AT25SF321B-SSHB-B be used in a system with a 5V power supply?
  The AT25SF321B-SSHB-B is a 3.3V device, but it can tolerate 5V on the I/O pins. However, the device must be powered from a 3.3V supply, and level shifters may be required to interface with 5V systems.
• How does the AT25SF321B-SSHB-B handle power-on reset and brown-out detection?
  The AT25SF321B-SSHB-B has a built-in power-on reset (POR) circuit that resets the device during power-up. The device also has a brown-out detection (BOD) circuit that detects power supply drops and resets the device if the voltage falls below a certain threshold.