CY27C256-150PC datasheet by Cypress Semiconductor

CY27C256-150PC Frequently Asked Questions (FAQs)

• What is the maximum operating temperature range for this device?
  The CY27C256-150PC has an operating temperature range of 0°C to 70°C, but it can also be operated in an extended temperature range of -40°C to 85°C with some performance degradation.
• How do I handle power-up and power-down sequencing for this device?
  It is recommended to power up the VCC supply before the VPP supply, and power down the VPP supply before the VCC supply to prevent latch-up and ensure proper operation.
• What is the recommended clock frequency for this device?
  The recommended clock frequency for the CY27C256-150PC is up to 150 ns (6.67 MHz), but it can operate at frequencies up to 200 ns (5 MHz) with some performance degradation.
• How do I ensure data retention during power-down?
  To ensure data retention during power-down, the VCC supply should be reduced to 0V or a voltage less than 0.5V, and the VPP supply should be reduced to 0V or a voltage less than 1.5V.
• What is the typical standby current for this device?
  The typical standby current for the CY27C256-150PC is 10 μA at VCC = 5V and VPP = 12V, but this can vary depending on the operating conditions and temperature.