The recommended operating temperature range for the ST4G3235BJR is -40°C to 125°C, as specified in the datasheet. However, it's essential to note that the device can operate at temperatures beyond this range, but with reduced performance and reliability.
The ST4G3235BJR has an internal POR and BOR circuitry. To handle these, ensure that the power supply ramps up slowly (typically <10 ms) and that the voltage remains above the minimum operating voltage (VDD(min)) during operation. Additionally, use an external capacitor (e.g., 10 nF) between VDD and VSS to filter out noise and ensure a clean power-on reset.
The ST4G3235BJR can operate at clock frequencies up to 80 MHz. However, the maximum frequency may vary depending on the specific application, operating conditions, and clock signal quality. It's recommended to consult the datasheet and application notes for specific guidance on clock frequency selection.
The internal oscillator in the ST4G3235BJR can be configured using the OSCEN and OSCSEL bits in the Clock Control Register (CCR). Set OSCEN to enable the internal oscillator, and OSCSEL to select the desired oscillator frequency (e.g., 16 MHz or 32 kHz). Consult the datasheet and application notes for detailed configuration guidelines.
The internal voltage regulator (IVR) in the ST4G3235BJR is used to regulate the internal voltage (VDD_INT) and provide a stable voltage supply to the core and peripherals. The IVR helps to reduce power consumption and noise, and ensures reliable operation. However, it's essential to follow the recommended power supply and decoupling capacitor guidelines to ensure proper IVR operation.
ST4G3235BJR datasheet
by STMicroelectronics
