KF33BDT-TR datasheet by STMicroelectronics

KF33BDT-TR Frequently Asked Questions (FAQs)

• What is the recommended operating voltage range for the KF33BDT-TR?
  The recommended operating voltage range for the KF33BDT-TR is 1.65 V to 3.6 V.
• How do I handle the power-on reset (POR) and brown-out reset (BOR) in the KF33BDT-TR?
  The KF33BDT-TR has an internal POR and BOR circuitry. The POR is triggered when the voltage supply drops below 1.4 V, and the BOR is triggered when the voltage supply drops below 1.7 V. You can use external resistors and capacitors to adjust the reset threshold and delay.
• What is the maximum clock frequency supported by the KF33BDT-TR?
  The KF33BDT-TR supports a maximum clock frequency of 32 kHz to 48 MHz, depending on the clock source and configuration.
• How do I configure the GPIO pins on the KF33BDT-TR?
  The GPIO pins on the KF33BDT-TR can be configured as inputs or outputs using the GPIOx_MODER register. You can also configure the pin modes, pull-up/pull-down resistors, and output type using the GPIOx_OTYPER and GPIOx_PUPDR registers.
• What is the purpose of the internal voltage regulator (LDO) in the KF33BDT-TR?
  The internal LDO in the KF33BDT-TR provides a stable voltage supply to the core and peripherals, allowing the device to operate from a single external power supply. The LDO can be bypassed if an external voltage regulator is used.