Mobile Tech Co. Ltd 64MXFWBF110A Manuale Utente
21
IO
42
MCCM0
SD Command Output/Memory Stick Bus State
Output
Output
46
MCINS
SD Card Detect Input
3.15.
3.15.
3.15.
3.15. RTC
RTC
RTC
RTC backup
backup
backup
backup
The Real Time Clock (RTC) module provides time and data information. The clock is
based on a 32.768KHz oscillator with an independent power supply. When the module is
powered off, a dedicated regulator supplies the RTC block. If the main battery is not
present, a backup supply such as a small mercury cell battery or a large capacitor is used
through the pin68 of VBACKUP. Figure 7 give the example diagram of the two ways. In
addition to providing timing data, an alarm interrupt is generated and can be used to power
up the baseband core via the BBWAKEUP pin. Regulator interrupts corresponding to
seconds, minutes, hours and days can be generated whenever the time counter value
reaches a maximum value (e.g., 59 for seconds and minutes, 23 for hours, etc.). The year
span is supported up to 2127. The maximum day-of-month values, which depend on the
leap year condition, are stored in the RTC block.
based on a 32.768KHz oscillator with an independent power supply. When the module is
powered off, a dedicated regulator supplies the RTC block. If the main battery is not
present, a backup supply such as a small mercury cell battery or a large capacitor is used
through the pin68 of VBACKUP. Figure 7 give the example diagram of the two ways. In
addition to providing timing data, an alarm interrupt is generated and can be used to power
up the baseband core via the BBWAKEUP pin. Regulator interrupts corresponding to
seconds, minutes, hours and days can be generated whenever the time counter value
reaches a maximum value (e.g., 59 for seconds and minutes, 23 for hours, etc.). The year
span is supported up to 2127. The maximum day-of-month values, which depend on the
leap year condition, are stored in the RTC block.