X24C02

8

Sequential Read

Sequential Read can be initiated as either a current

address read or random access read. The first word is

transmitted as with the other modes, however, the

master now responds with an acknowledge, indicating it

requires additional data. The X24C02 continues to output

data for each acknowledge received. The master

terminates this transmission by issuing a stop condition,

omitting the ninth clock cycle acknowledge.

Figure 9. Sequential Read

Figure 10. Typical System Configuration

MASTER

TRANSMITTER/

RECEIVER

SLAVE

RECEIVER

SLAVE

TRANSMITTER/

RECEIVER

MASTER

TRANSMITTER

MASTER

TRANSMITTER/

RECEIVER

SDA

SCL

V

CC

BUS ACTIVITY:

MASTER

SDA LINE

BUS ACTIVITY:

X24C02

SLAVE

ADDRESS

A

C

K

A

C

K

DATA n+x

S

T

O

P

P

DATA n

A

C

K

DATA n+1

A

C

K

DATA n+2

3838 FHD F15

3838 FHD F16

The data output is sequential, with the data from address

and followed by the data from n + 1. The address counter

for read operations increments all address bits, allowing the

entire memory contents to be serially read during

one operation. At the end of the address space (address 255),

the counter “rolls over” to address 0 and the

X24C02 continues to output data for each acknowledge

received. Refer to Figure 9 for the address, acknowl

edge

and data transfer sequence.