LC5645N
No.1433–4/10
5. Time setting mode
Only the digit to be set is lighted and displayed. In the month setting mode the month digits only are displayed.
In the month or hours setting mode the month or hours are displayed on the left 2 digits.
In the date or minutes setting mode the date or minutes are displayed on the right 2 digits.
In the hours or minutes setting mode the colon is lighted.
In the month or date setting mode the colon is unlighted.
Each time SW1 is pushed/released in each setting mode, the display contents are incremented +1. Holding SW1
pushed for 1 to 2 seconds or more causes the display contents to advance at a 4Hz rate.
Execution of setting in each setting mode
(a) Execution of month setting ........... The month counter counts up to 12.
(b) Execution of date setting ............... The date counter counts up to 31 regardless of long/short month.
No carry to the month digits occurs. Discrimination between long month
and short month is exercised only when a carry from the hours digits
occurs.
(c) Execution of hours setting ............. In the 12-hour operation mode “A” is displayed on the rightmost digit
when in the morning : “P” is displayed when in the afternoon.
The display contents change as 11a.m.
→ 12p.m. → 1p.m. or 11p.m →
12a.m.
→ 1a.m.
In the 24-hour operation mode the display contents change as 23
→ 0.
No carry to the date digits occurs.
(d) Execution of minutes setting ........ When minutes setting is executed, seconds are cleared and the time is
held as set. This is proved by the fact that when SW2 is pushed/released
after execution of minutes setting the hours, minutes display appears but
the colon remains lighted without flashing. By pushing/releasing SW1 or
SW2 under this state, the time hold is released, timekeeping starts, and
the normal hours, minutes display mode returns with the colon flashing.
If in the minutes setting mode SW2 is pushed/released without execution
of minutes setting, the setting mode returns to the normal hours, minutes
display mode.