Toshiba TX03 Series Manual page 421

17. Real Time Clock (RTC)
17.1 Function
1. Clock (hour, minute and second)
2. Calendar (month, week, date and leap year)
3. Selectable 12 (am/ pm) and 24 hour display
4. Time adjustment + or − 30 seconds (by software)
5. Alarm (alarm output)
6. Alarm interrupt
17.2 Block Diagram
Clock
(fs)
1 Hz clock
Note 1: Western calendar year column:This product uses only the final two digits of the year. The year following 99 is 00
years. Please take into account the first two digits when handling years in the western calendar.
Note 2: Leap year:A leap year is divisible by 4 excluding a year divisible by 100; the year divisible by 100 is not considered to
be a leap year. Any year divisible by 400 is a leap year. This product is considered the year divisible by 4 to be a
leap year and does not take into account the above exceptions. It needs adjustments for the exceptions.
2/4/8/16 Hz clock
Sec.counter
Alarm register
Comparator
Clock
Internal
address bus
R/W control
Adjust
RD WR Data
Figure 17-1 Block Diagram
Page 399
Alarm
selector
Internal data bus
Address
TMPM3V6/M3V4
ALARM
INTRTC
2019-02-06