Micro Crystal

Real Time Clock / Calendar Module

RV-8564

22/40

9.5.1.FIRST INCREMENT OF TIME CIRCUITS AFTER STOP BIT RELEASE

Bit

Prescaler bits

1)

1 Hz Tick

Time

Comment

STOP

hh:mm:ss

Clock is running normally

0

01-0 0001 1101 0100

12:45:12

Prescaler counting normally

1

XX-0 0000 0000 0000

12:45:12

Prescaler is reset; time circuits are frozen

New time is set by user

1

XX-0 0000 0000 0000

08:00:00

Prescaler is reset; time circuits are frozen

STOP bit is released by user

0

XX-0 0000 0000 0000

08:00:00

Prescaler is now running

XX-1 0000 0000 0000

08:00:00

-

XX-0 1000 0000 0000

08:00:00

-

XX-1 1000 0000 0000

08:00:00

-

:

:

:

11-1 1111 1111 1110

08:00:00

-

00-0 0000 0000 0001

08:00:01

10-0 0000 0000 0001

08:00:01

-

:

:

:

11-1 1111 1111 1111

08:00:01

-

00-0 0000 0000 0000

08:00:01

-

10-0 0000 0000 0000

08:00:01

-

:

:

-

11-1 1111 1111 1110

08:00:01

-

00-0 0000 0000 0001

08:00:02

The first increment of the time circuits is between 0.507813 s and 0.507935 s after STOP bit is released. The

clock.

9.6. RESET

The RV-8564 includes an internal reset circuit which is active whenever the oscillator is stopped. In the reset state,

the I

communication is not possible during reset.