RP/RF5C01A

6

• MODE register (Address Dh)

counters than the 1 second counter while the Timer EN is 0, carrying will be held and avoided when the Timer EN changes from 0 to 1. Thus, no appar-

ent delay is produced when the duration of the Timer EN = 0 is less than one second.

Timer EN Alarm EN

M1

M0

¯

¯

0

0

MODE00 : Setting and read out of time

0

1

MODE01 : Setting and read out of alarm, 12-hour/24-hour and leap year

1

0

Read and Write of RAM of BLOCK10

1

1

Read and Write of RAM of BLOCK11

1 : Alarm output enabled

0 : Alarm output disabled

(Note that 16Hz or 1Hz signals are not affected.)

1 : Counting time starts; 0 : the 1-second counter and higher-order than

the 1-second counter stop

• 12/24 select register (MODE01, Address Ah)

• Leap year counter (MODE01, Address Bh)

repeatedly in the same timing as the year counter.