X76F041 Datasheet, PDF (7/21 Pages) Xicor Inc. – PASS TM SecureFlash

X76F041
WRITE OPERATION
Sector Write
The Sector Write mode requires issuing the 3-bit write
command followed by the address, password if required
and then the data bytes transferred as illustrated in Fig-
Figure 6. Sector Write
ure 6. Eight bytes must be transferred. After the last byte
to be transferred is acknowledged, a stop condition is
issued, which starts the nonvolatile write cycle. If more
than 8 bytes are transferred the data will wrap around
and previous data will be overwritten. All data will be writ-
ten to the same sector as defined by A₈–A₃.
SDA LINE
S
T
A
R
T
C
M
D
A
X
A
X
A
X
A
X
A
8
AAAAAAAA
76543210
WRITE
PASSWORD 7
S
A
A
A
C
C
C
K
K
K
IF PASSWORD
MATCH THEN
DATA 0
DATA 1
DATA 2
A
A
A
A
C
C
C
C
K
K
K
K
WRITE
PASSWORD 0
A
C
K
DATA 7
WAIT
tWC/ACK POLLING
A
C
K
S
T
O
P WAIT
S ^tWC
A
C
K
7002 ILL F10.1
7