12

Atmel AT24C128C [DATASHEET]

8734B–SEEPR–9/2012

Sequential Read: Sequential Reads are initiated by either a Current Address Read or a Random Address Read. After

the microcontroller receives a data word, it responds with an acknowledge. As long as the EEPROM receives an

acknowledge, it will continue to increment the data word address and serially clock out sequential data words. When the

memory address maximum address is reached, the data word address will roll-over and the Sequential Read will

continue from the beginning of the array. The Sequential Read operation is terminated when the microcontroller does not

respond with a zero but does generate a following stop condition (See Figure 9-3).

Figure 9-3. Sequential Read

Note:

* = Don’t care bit

SDA LINE

S

T

A

R

T

S

T

A

R

T

R

E

A

D

W

R

I

T

E

S

T

O

P

Device

Address

Second Word

Address

Device

Address

First Word

Address

Data (n + 1)

Data (n + 2)

Data (n + x)

Data (n)

M

S

B

A

C

K

A

C

K

A

C

K

L

S

B

A

C

K

A

C

K

A

C

K

A

C

K

N

O

A

C

K

R

/

W

Dummy Write

. . .

. . .

R

/

W