s-24cs16a Seiko Instruments Inc., s-24cs16a Datasheet - Page 14

• Manufacturer Part Number: s-24cs16a
• Description: 2-wire Cmos Serial E2prom
• Manufacturer: Seiko Instruments Inc.

14
2-WIRE CMOS SERIAL E
S-24CS16A
LINE
SDA
6. 2 Page Write
S
T
A
R
T
The page write mode allows up to 16 bytes to be written in a single write operation in the S-24CS16A.
Basic data transmission procedure is the same as that in the “Byte Write”. But instead of generating a stop
condition, the master transmitts 8-bit write data up to 8 bytes before the page write.
When the E
start condition, it generates an acknowledge. Then the E
an acknowledge. After the E
write data corresponding to the next word address, and generates an acknowledge. The E
reception of 8-bit write data and generation of acknowledge in succession. The E
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 S-24CS16A, the lower 4 bits of the word address are automatically incremented every time when the E
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 (P2, P1 and P0) remain unchanged, and the lower 4 bits are rolled over and previously received data
will be overwritten.
M
S
B
1 0 1 0
ADDRESS
DEVICE
P2 P1 P0
2
PROM receives a 7-bit device address and a 1-bit read / write instruction code set to “0”, following a
S
B
L
W
W
R
E
R
T
I
0
/
A
C
K
WORD ADDRESS (n)
W7 W6 W5 W4 W3 W2 W1W0
2
PROM
2
PROM receives 8-bit write data and responds with an acknowledge, it receives 8-bit
Figure 15 Page Write
A
C
K
Seiko Instruments Inc.
D7 D6 D5 D4 D3 D2 D1 D0
DATA (n)
2
PROM receives an 8-bit word address, and responds with
ADR INC
C
A
K
D7
DATA (n+1)
2
PROM can receive as many write
ADR INC
D0
A
C
K
D7
DATA (n+x)
2
PROM repeats
Rev.5.1
ADR INC
2
D0
PROM
C
A
K
O
S
P
00
T