M48T59Y-70MH1F datasheet by STMicroelectronics

M48T59Y-70MH1F Frequently Asked Questions (FAQs)

• What is the maximum operating temperature range for this device?
  The M48T59Y-70MH1F 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 separated. The VS function monitors the VCC supply voltage and resets the device when it falls below the minimum operating voltage (VCC(min)).
• What is the recommended crystal oscillator configuration for this device?
  The M48T59Y-70MH1F requires a 32.768 kHz crystal oscillator with a maximum ESR of 60 kΩ and a load capacitance of 12.5 pF to 20 pF.
• How do I ensure data integrity during power-down and power-up cycles?
  Use the VCC monitor and power-down flag to detect power-down events and save critical data to the non-volatile memory before power-down. During power-up, use the power-up flag to detect the power-up event and restore the saved data.
• What is the maximum clock frequency for the real-time clock (RTC) and calendar functions?
  The RTC and calendar functions can operate up to 32.768 kHz, but the maximum clock frequency for the clock calendar and alarm functions is 1 kHz.