STK22C48-NF25ITR datasheet by Cypress Semiconductor

STK22C48-NF25ITR Frequently Asked Questions (FAQs)

• What is the recommended operating voltage range for the STK22C48-NF25ITR?
  The recommended operating voltage range for the STK22C48-NF25ITR is 4.5V to 5.5V.
• How do I handle the power-up and power-down sequences for the STK22C48-NF25ITR?
  The power-up sequence should be VCC first, then VPP, and the power-down sequence should be VPP first, then VCC. This ensures that the device is properly initialized and avoids any potential latch-up conditions.
• What is the maximum clock frequency supported by the STK22C48-NF25ITR?
  The maximum clock frequency supported by the STK22C48-NF25ITR is 20 MHz.
• How do I implement a reliable reset circuit for the STK22C48-NF25ITR?
  A reliable reset circuit can be implemented using a voltage supervisor IC, such as the CY1147, which can detect power-on reset and brown-out conditions. The reset signal should be connected to the RESET pin of the STK22C48-NF25ITR.
• What are the guidelines for PCB layout and routing for the STK22C48-NF25ITR?
  The PCB layout and routing should ensure that the power supply lines (VCC and VPP) are separated from the signal lines, and that the clock signal is routed away from noisy signals. Additionally, the decoupling capacitors should be placed close to the device pins.