Operation

M41T81S

12/31

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

M41T81S 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 9 on page 12).

Figure 7.

Slave address location

Figure 8.

READ mode sequence

Figure 9.

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