s-24c04c Seiko Instruments Inc., s-24c04c Datasheet - Page 14

• Manufacturer Part Number: s-24c04c
• Description: 2-wire Serial E2prom
• Manufacturer: Seiko Instruments Inc.

14
2-WIRE SERIAL E
S-24C04C
LINE
SDA
6. 2 Page write
S
A
R
T
T
M
S
B
1 0 1 0
The page write mode allows up to 16 bytes to be written in a single write operation in the S-24C04C.
Its basic process to transmit data is as same as byte write, but it operates page write by sequentially receiving 8-
bit write data as much data as the page size has.
When the S-24C04C receives a 7-bit device address and a 1-bit read / write instruction code set to “0”, following a
start condition, it generates an acknowledge. Then the S-24C04C receives an 8-bit word address, and responds
with an acknowledge. After the S-24C04C receives 8-bit write data and responds with an acknowledge, it receives
8-bit write data corresponding to the next word address, and generates an acknowledge. The S-24C04C repeats
reception of 8-bit write data and generation of acknowledge in succession. The S-24C04C can receive as many
write data as the maximum page size.
Receiving a stop condition initiates a write cycle of the area starting from the designated memory address and
having the page size equal to the received write data.
In the S-24C04C, the lower 4 bits of the word address are automatically incremented every time when the S-
24C04C receives 8-bit write data. If the size of the write data exceeds 16 bytes, the upper 4 bits of the word
address and page address (P0) remain unchanged, and the lower 4 bits are rolled over and the last 16-byte data
that the S-24C04C received will be overwritten.
ADDRESS
DEVICE
A2 A1 P0
S
B
L
2
W
W
PROM
R
R
T
E
I
0
/
C
A
K
W7 W6 W5 W4 W3 W2 W1W0
WORD ADDRESS (n)
Figure 15 Page Write
A
C
K
Seiko Instruments Inc.
D7 D6 D5 D4 D3 D2 D1 D0
DATA (n)
A
C
K
D7
DATA (n + 1)
D0
A
C
K
D7
DATA (n + x)
Rev.2.0
D0
_00_C
A
C
K
O
S
P
T