AT88SC0404C-Y4I Atmel, AT88SC0404C-Y4I Datasheet - Page 39
AT88SC0404C-Y4I
Manufacturer Part Number
AT88SC0404C-Y4I
Description
Manufacturer
Atmel
Datasheet
1.AT88SC0404C-Y4I.pdf
(66 pages)
Specifications of AT88SC0404C-Y4I
Operating Temperature (max)
85C
Operating Temperature (min)
-40C
Mounting
Surface Mount
Pin Count
8
Operating Temperature Classification
Industrial
Lead Free Status / RoHS Status
Not Compliant
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7.6.6. Verify Password: $BA
38
Functional
Figure 22. Verify Password Command Functional Description
Read password indices: $10 to $17 for passwords 0 to 7.
Write password indices: $00 to $07 for passwords 0 to 7.
Secure code index: $07 (equivalent to Write 7 Password).
Four password index bits "r" and "ppp" indicate the password to compare:
Figure 23. Verify Password
Once the sequence has been carried out, the device requires the host to perform an ACK polling sequence with the
system read command $B6. In order to know whether the inserted password was correct, the host can read the
corresponding password attempts counter and verify the value is $FF.
Atmel AT88SC0104/0204/0404/0808/1616/3216/6416/12816/25616C
R
S
T
A
T
8-password bytes
Command
r = 0 : Write password
r = 1 : Read password
p
1011 1010
2
p
1
p
0
: Password set number
C
A
K
000r 0p2p1p0
PW Index
Password Index
Command
Host
PW1
PW2
PW3
A
C
K
Parameter 2
xxxx xxxx
A
C
K
0000 0011
Device
N=3
A
C
K
Data x 3
d7--- ---d0
A
C
K
O
S
T
P
5211C–SMIC–01/10
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