UPD78F0411GA-GAM-AX Datasheet, PDF (278/564 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

CHAPTER 9 REAL-TIME COUNTER
9.4 Real-Time Counter Operation
9.4.1 Starting operation of real-time counter
Figure 9-18. Procedure for Starting Operation of Real-Time Counter
Start
RTCE = 0
Stops counter operation.
Setting AMPM, CT2 to CT0 Selects 12-/24-hour system and interrupt (INTRTC).
Setting SEC (clearing RSUBC) Sets second count register.
Setting MIN
Sets minute count register.
Setting HOUR
Sets hour count register.
Setting WEEK
Sets week count register.
Setting DAY
Sets day count register.
Setting MONTH
Sets month count register.
Setting YEAR
Sets year count register.
Clearing IF flags of interrupt Clears interrupt request flags (RTCIF, RTCIIF).
Clearing MK flags of interrupt Clears interrupt mask flags (RTCMK, RTCIMK).
RTCE = 1
Starts counter operation.
No
INTRTC = 1?
Yes
Reading counter
276
User’s Manual U18698EJ1V0UD