S-24C01A Seiko Instruments Inc, S-24C01A Datasheet - Page 9

• Manufacturer Part Number: S-24C01A
• Description: CMOS 2-WIRE SERIAL EEPROM
• Manufacturer: Seiko Instruments Inc

Rev. 2.2
6. Write
6.1 Byte Write
6.2
_30
"0," following the start condition signal, it outputs the acknowledgment signal. Next, when the
EEPROM receives an 8-bit length word address, it outputs the acknowledgment signal.
After the EEPROM receives 8-bit write data and outputs the acknowledgment signal, it receives the
stop condition signal. Next, the EEPROM at the specified memory address starts to rewrite.
output.
Up to 16 bytes per page can be written in the S-24C04A.
EEPROM receives 8-bit write data which corresponds to the page size, the page can be written.
"0," following the start condition signal, it outputs the acknowledgment signal. When the EEPROM
receives an 8-bit length word address, it outputs the acknowledgment signal.
After the EEPROM receives 8-bit write data and outputs the acknowledgment signal, it receives 8-
bit write data corresponding to the next word address, and outputs the acknowledgment signal. The
EEPROM repeats reception of 8-bit write data and output of the acknowledgment signal in
succession. It is capable of receiving write data corresponding to the maximum page size.
of the page, on which write data, starting from the specified memory address, is received.
When the EEPROM receives a 7-bit length device address and a 1-bit read/write instruction code
When the EEPROM is rewriting, all operations are prohibited and the acknowledgment signal is not
Page Write
Up to 8 bytes per page can be written in the S-24C01A and S-24C02A.
Basic data transmission procedures are the same as those in the "Byte Write." However, when the
When the EEPROM receives a 7-bit length device address and a 1-bit read/write instruction code
When the EEPROM receives the stop condition signal, it starts to rewrite, corresponding to the size
SDA
S
T
A
R
T
M
S
B
1
0 1 0
ADDRES
DEVICE
A2 A1 A0
S
B
L
W
W
R
R
T
E
0
/
I
A
C
K
W7 is optional in the S-24C01A.
A0 is P0 in the S-24C04A.
W7W6W5W4W3W2W1W0
Seiko Instruments Inc.
Figure 10 Byte Write
WORD ADDRESS
A
C
K
D7 D6 D5 D4 D3 D2 D1 D0
DATA
CMOS 2-WIRE SERIAL EEPROM
ADR INC (ADDRESS INCREMENT)
A
C
K
O
S
T
P
S-24C01A/02A/04A
9