2-WIRE SERIAL E2PROM FOR DIMM SERIAL PRESENCE DETECT

S-34C02B

11

7. Write

7. 1 Byte write

When the master sends a 7-bit device address and a 1-bit read / write instruction code set to "0", following a start

condition, this IC acknowledges it.

This IC then receives an 8-bit word address and responds with an acknowledge. After this IC receives 8-bit write

data and responds with an acknowledge, it receives a stop condition and that initiates the write cycle at the

addressed memory.

During the write cycle all operations are forbidden and no acknowledge is generated.

A2 A1 A0

S

T

A

R

T

1 0 1 0

W

R

I

T

E

DEVICE

ADDRESS

R

/

W

M

S

B

SDA LINE

A

C

K

L

S

B

WORD ADDRESS

A

C

K

0

S

T

O

P

DATA

W7 W6 W5 W4 W3 W2 W1 W0

D7 D6 D5 D4 D3 D2 D1 D0

A

C

K

A

C

K

Figure 9 Byte Write