X76F200 Datasheet, PDF (6/16 Pages) Xicor Inc. – Secure SerialFlash

X76F200
Figure 4. Sector Write Sequence (Password Required)
Host
Commands
X76F200
Response
SDA _S
WRITE
COMMAND
If ACK, Then
Password Matches
Host
Commands
Password ACK
COMMAND
S
X76F200
Responce
Write
Password
7
...
Write
Password
0
Wait tWC OR
Password
ACK
Command
P
Wait tWC Data
ACK Polling
Figure 5. Acknowledge Polling
SCL
8th clk.
of 8th
pwd. byte
‘ACK’
clk
8th
‘ACK’
clk
clk
SDA
‘ACK’
START
condition
8th bit
ACK or
no ACK
Figure 6. Sector Read Sequence (Password Required)
Host
Commands
X76F200
Response
SDA S
READ
COMMAND
If ACK, Then
Password Matches
Host
Commands
Password ACK
COMMAND
S
X76F200
Responce
Read
Password
7
...
Data 0
Read
Password
0
Data n
Wait tWC OR
Password
ACK
Command
P
6