X76F128 Datasheet, PDF (4/17 Pages) Xicor Inc. – Secure SerialFlash

X76F128
Figure 2. Data Validity
SCL
SDA
Data Stable
Data
Change
Figure 3. Definition of Start and Stop Conditions
7052 FM 04
SCL
SDA
Start Condition
Stop Condition
7052 FM 05
Table 1. X76F128 Instruction Set
1st Byte
after Start
1st Byte
after
Password
2nd Byte
after
Password
1000 0000 High Address Low address
1000 1000 High Address Low address
1001 0000 High Address Low address
1001 1000 High Address Low address
1010 0000 0000 0000 0000 0000
1010 1000 0000 0000 0000 0000
1011 0000 0000 0000
1011 1000 0000 0000
0000 0000
0000 0000
1100 0000 0000 0000
1110 0000 not used
0000 0000
not used
1110 1000 not used
not used
1111 0000
not used
All the rest
not used
Command Description
Read (Array 0)
Read (Array 1)
Sector Write (Array 0)
Sector Write (Array 1)
Change Read 0 Password
Change Read 1 Password
Change Write 0 Password
Change Write 1 Password
Change Reset Password
RESET PASSWORD Command
RESET DEVICE Command
ACK Polling command (Ends Password operation)
Reserved
Password
used
Read 0
Read 1
Write 0
Write 1
Read 0
Read 1
Write 0
Write 1
Reset
Reset
Reset
None
7052 FM T04
Notes: Illegal command codes will be disregarded. The part will respond with a “no-ACK” to the illegal byte and then return to the standby mode.
All write/read operations require a password.
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