M48T35AV-10MH6F - STMicroelectronics

M48T35AV-10MH6F Frequently Asked Questions (FAQs)

• What is the maximum operating temperature range for this device?
  The M48T35AV-10MH6F can operate from -40°C to +85°C, but it's recommended to use it within the -20°C to +70°C range for optimal performance.
• How do I handle the power-on reset (POR) and voltage supervisor (VS) functions?
  The POR and VS functions are internally connected and cannot be disabled. The device will automatically reset when the supply voltage falls below the VS threshold (around 2.2V) and will remain in reset until the voltage rises above the POR threshold (around 2.5V).
• What is the recommended crystal oscillator configuration for this device?
  The M48T35AV-10MH6F requires a 32.768 kHz crystal oscillator with a maximum ESR of 30 kΩ and a load capacitance of 12.5 pF. The oscillator circuit should be connected between the X1 and X2 pins.
• How do I ensure data integrity and prevent data corruption during power-down or brownout conditions?
  The device has a built-in power-down detection circuit that automatically saves the clock and calendar data to the internal battery-backed registers when the supply voltage falls below the VS threshold. However, it's still recommended to use a capacitor on the VCC pin to filter out noise and ensure a clean power-down sequence.
• What is the maximum clock accuracy and stability for this device?
  The M48T35AV-10MH6F has a typical clock accuracy of ±10 ppm at 25°C and a maximum clock stability of ±20 ppm over the entire operating temperature range.