S-24C04BPHAL Datasheet, PDF (12/38 Pages) Seiko Instruments Inc – 2-WIRE CMOS SERIAL E2PROM

2-WIRE CMOS SERIAL E²PROM
S-24C04BPHAL
Rev.2.1_00
6. Write operation
6.1 Byte write
When the E²PROM receives a 7-bit device address and the 1-bit read/write instruction code “0”, following
the start condition signal, it outputs the acknowledge signal.
Next, when the E²PROM receives an 8-bit word address, it outputs the acknowledge signal.
After the E²PROM receives 8-bit write data and outputs the acknowledge signal, it receives the stop
condition signal. Next, rewriting the specified memory address of the E²PROM starts.
While the E²PROM is being rewritten, all operations are prohibited and the acknowledge signal is not
output.
S
W
T
R
A
I
R
DEVICE
T
T
ADDRESS _E
WORD ADDRESS
S
T
O
DATA
P
SDA line
1 0 1 0 X X P0 0
W 7 W 6 W 5 W 4 W 3 W 2 W 1 W 0 D7 D6 D5 D4 D3 D2 D1 D0
M
L RA
A
A
S
S /C
C
C
B
B WK
K
K
Figure 10 Byte Write
ADR INC
(ADDRESS INCREMENT)
12
Seiko Instruments Inc.