M41T81

Operation

11/30

An alternate READ Mode may also be implemented whereby the master reads the M41T81

slave without first writing to the (volatile) address pointer. The first address that is read is the

last one stored in the pointer (see Figure 8 on page 11).

Figure 6.

Slave address location

Figure 7.

READ mode sequence

Figure 8.

Alternative READ mode sequence

AI00602

R/W

SLAVE ADDRESS

START

A

0

100

0

11

AI00899

BUS ACTIVITY:

S

P

SDA LINE

BUS ACTIVITY:

MASTER

DATA n

DATA n+1

DATA n+X

WORD

ADDRESS (An)

SLAVE

ADDRESS

S

SLAVE

ADDRESS

AI00895

BUS ACTIVITY:

S

P

SDA LINE

BUS ACTIVITY:

MASTER

DATA n

DATA n+1

DATA n+X

SLAVE

ADDRESS