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M41T0

Table 8. Register Map

Keys: ST = STOP Bit

OUT = Output level

X = Don’t care

0 = Must be set to '0.'

CEB = Century Enable Bit

CB = Century Bit

OF = Oscillator Fail Bit

Note: 1. When CEB is set to '1', CB will toggle from '0' to '1' or from '1' to '0' at the turn of the century (dependent upon the initial value set).

When CEB is set to '0', CB will not toggle.

Address

Data

Function/Range

BCD Format

D7

D6

D5

D4

D3

D2

D1

D0

0

ST

10 Seconds

Seconds

Seconds

00-59

1

OF

10 Minutes

Minutes

Minutes

00-59

2

CB

10 Hours

Hours

Century/Hours

0-1/00-23

3

XXXXX

Day

Day

01-07

4

X

X

10 Date

Date

Date

01-31

5

X

X

X

10 M.

Month

Month

01-12

6

10 Years

Years

Year

00-99

7

OUT

0

XXX

XXX

Control