S-24C02BPPHL Datasheet, PDF (12/39 Pages) Seiko Instruments Inc – 2-WIRE CMOS SERIAL E2PROM

2-WIRE CMOS SERIAL E²PROM
S-24C02BPPHL
Rev.2.2_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 01 0 XXX0
W7 W6 W5 W4 W3 W2 W1 W0 D7 D6 D5 D4 D3 D2 D1 D0
M
L RA
S
S /C
B
B WK
A
A
C
C
K
K
Figure 10 Byte Write
ADR INC
(ADDRESS INCREMENT)
12
Seiko Instruments Inc.