s-24c128ci-t8t1u3 Seiko Instruments Inc., s-24c128ci-t8t1u3 Datasheet - Page 12

• Manufacturer Part Number: s-24c128ci-t8t1u3
• Description: 2-wire Serial Eeprom S-24c128c 128k-bit
• Manufacturer: Seiko Instruments Inc.

12
SDA LINE
2-WIRE CMOS SERIAL E
S-24C128C
6. Write
6. 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, the S-24C128C acknowledges it. The S-24C128C then receives a upper 8-bit word address and
responds with an acknowledge. And the S-24C128C receives a lower 8-bit word address and responds with an
acknowledge. After the S-24C128C 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.
S
T
A
R
T
M
S
B
1 0 1 0
ADDRESS
DEVICE
A2 A1 A0
S
B
L
2
W
W
R
R
E
T
0
PROM
/
I
A
C
K
X
X
UPPER WORD
W13
ADDRESS
Figure 12 Byte Write
Seiko Instruments Inc.
W12 W11 W10 W9 W8
A
C
K
W7 W6 W5 W4 W3 W2 W1 W0
LOWER WORD
ADDRESS
A
C
K
D7 D6 D5 D4 D3 D2 D1 D0
DATA
Rev.2.0
_00_H
A
C
K
O
S
T
P