BF545B datasheet by NXP Semiconductors

BF545B Frequently Asked Questions (FAQs)

• What is the recommended operating voltage range for the BF545B?
  The recommended operating voltage range for the BF545B is 3.0 V to 5.5 V.
• How do I configure the BF545B for low-power mode?
  To configure the BF545B for low-power mode, set the VCC pin to 3.0 V and reduce the clock frequency to 1 MHz or lower. Additionally, disable any unused peripherals and set the CPU to idle mode when not in use.
• What is the maximum clock frequency supported by the BF545B?
  The maximum clock frequency supported by the BF545B is 100 MHz.
• How do I interface the BF545B with external memory?
  The BF545B has a 16-bit external bus interface that can be used to interface with external memory. The external memory can be connected to the BF545B's address and data buses, and the BF545B's memory controller handles the memory access.
• What is the purpose of the BF545B's internal voltage regulator?
  The internal voltage regulator on the BF545B is used to generate the internal voltage supply for the CPU and peripherals. It takes the external voltage supply (VCC) as input and generates a stable internal voltage supply (VDD) for the chip.