tmp19a44fda TOSHIBA Semiconductor CORPORATION, tmp19a44fda Datasheet - Page 487

• Manufacturer Part Number: tmp19a44fda
• Description: 32bit Tx System Risc
• Manufacturer: TOSHIBA Semiconductor CORPORATION

19.1
19.2
Real Time Clock (RTC)
19.
Functions
Block Diagram
32 KHz
clock
(Note 1) Western calendar year column:
(Note 2) Leap year:
Real Time Clock (RTC)
1)
2)
3)
4)
5)
1s Carry hold
Clock (hour, minute and second)
Calendar (month, week, date and leap year)
Selectable 12 (am/ pm) and 24 hour display
Time adjustment ＋ or － 30 seconds (by software)
Alarm interrupt (selectable from 1sec/ 500msec/ 250msec/ 125msec/ 62.5msec or calendar)
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.
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.
Adjust
RD
WR
Address
bus
Divider
R/W control
D0~D16
Comparator
Clock
TMP19A44 (rev1.3) 19-1
Fig. 19.1 Block Diagram
Alarm register
1, 2, 4, 8 and 16 Hz
Address
l
Internal data bus
k
selector
Alarm
INTRTC
TMP19A44
2010-04-01