Rainbow-electronics MAX6901 Uživatelský manuál stáhnout pdf (Strana 6)

MAX6901

then read the Seconds register again (final-seconds).

Check to see that final-seconds is equal to initial-sec-

onds. If not, repeat the write process. If the Seconds

first, and then read it back and store its value (initial-

seconds). Update the remaining timekeeping registers

and then read the Seconds register again (final-sec-

3-Wire Serial RTC in a TDFN

6 _______________________________________________________________________________________

Table 2. Register Address/Definition

FUNCTION A7 A6 A5 A4 A3 A2 A1 A0 VALUE D7 D6 D5 D4 D3 D2 D1 D0

TIMEKEEPING

00-59

32kHz

10 SEC 1 SEC

SECOND

1000000

*POR STATE 0 0 0 0 0000

00-59

ALM

OUT

10 MIN 1 MIN

MINUTE

1000001

*POR STATE

0 0000000

00-23 12/24

HOUR

1000010

01-12 1/0

A/P

0/1

1 HR

*POR STATE 0 0 0 00000

01-28/29

01-30

01-31

0 0 10 DATE 1 DATE

DATE

1000011

*POR STATE

0 0 000001

01-12 0 0 0 10M 1 MONTH

MONTH

1000100

*POR STATE

0 0 0 00001

01-07 0 0 0 0 0 WEEKDAY

DAY

1000101

*POR STATE

0 0 0 0 0 001

00-99 10 YEAR 1 YEAR

YEAR

1000110

*POR STATE 0 1 1 1 0 0 0 0

WP 0 0 0 0 0 0 0

CONTROL

1000111

*POR STATE 0

0 0 0 0 0 0 0

00-99 1000 YEAR 100 YEAR

CENTURY

1001001

*POR STATE 0 0 0 1 1 0 0 1

Note: *POR STATE

defines power-on reset state of register content.

1 2 3 4 5 6 7 8 9 10 11 ... 17 18

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