CY14B256LA-ZS25XI datasheet by Cypress Semiconductor

CY14B256LA-ZS25XI Frequently Asked Questions (FAQs)

• What is the maximum operating temperature range for this device?
  The CY14B256LA-ZS25XI has an operating temperature range of -40°C to +85°C.
• How do I handle power-up and power-down sequencing for this device?
  The device has a power-up and power-down sequencing requirement. The VCC power supply must be applied before the VIO power supply, and the VIO power supply must be removed before the VCC power supply. This ensures proper device operation and prevents latch-up.
• What is the recommended PCB layout and routing for this device?
  Cypress recommends following good PCB design practices, such as using a solid ground plane, keeping signal traces short and away from noise sources, and using bypass capacitors to decouple the power supplies. Additionally, the device's pinout is designed to facilitate easy PCB routing, with the address and data pins on opposite sides of the package.
• How do I implement a reliable write operation for this device?
  To ensure a reliable write operation, Cypress recommends using a write cycle that includes a valid address, a valid write enable signal, and a valid data signal. The device also has a built-in write protection feature that can be enabled to prevent accidental writes. Additionally, the device's write cycle timing must be adhered to, including the minimum write pulse width and the maximum write cycle time.
• What is the device's behavior during a power failure or brownout condition?
  During a power failure or brownout condition, the device will automatically reset and all internal registers will be reset to their default state. The device will also automatically recover when power is restored, and all data will be retained as long as the power failure or brownout condition does not exceed the device's data retention specification.