M48T129Y-70PM1 datasheet by STMicroelectronics

M48T129Y-70PM1 Frequently Asked Questions (FAQs)

• What is the maximum operating temperature range for this device?
  The M48T129Y-70PM1 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 ensure that the device resets correctly during power-up. No external components are required, but you should ensure that the power supply ramps up slowly enough to allow the POR to function correctly.
• What is the recommended clock frequency for this device?
  The M48T129Y-70PM1 can operate with a clock frequency up to 1 MHz, but the recommended frequency is 32.768 kHz for optimal power consumption and accuracy.
• How do I ensure data integrity and prevent data corruption during power failures?
  Use the device's built-in battery switch-over function, which automatically switches to the battery supply during power failures. Additionally, implement a power-fail detect circuit to reset the device and prevent data corruption.
• What is the typical current consumption of this device?
  The typical current consumption of the M48T129Y-70PM1 is around 1.5 μA in standby mode and 10 μA in active mode, but this can vary depending on the clock frequency, operating voltage, and other factors.