AT88SC0404C-PI Atmel, AT88SC0404C-PI Datasheet - Page 39

• Manufacturer Part Number: AT88SC0404C-PI
• Manufacturer: Atmel

Specifications of AT88SC0404C-PI

• Operating Temperature (max): 85C
• Operating Temperature (min): -40C
• Package Type: PDIP
• Mounting: Through Hole
• Pin Count: 8
• Operating Temperature Classification: Industrial
• Lead Free Status / RoHS Status: Not Compliant

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