AT88RF04C-WA1 Atmel, AT88RF04C-WA1 Datasheet - Page 102
AT88RF04C-WA1
Manufacturer Part Number
AT88RF04C-WA1
Description
Manufacturer
Atmel
Datasheet
1.AT88RF04C-WA1.pdf
(158 pages)
Specifications of AT88RF04C-WA1
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I.3.
102
The Password and PAC Registers
Each password set, along with its associated Password Attempt Counters is stored in an 8 byte segment in the
Password section of the Configuration Memory. Figure 30 illustrates password set “z” in the Configuration Memory
map. The Write Password and Write Password PAC are stored in the lower four bytes, while the Read Password and
Read Password PAC are stored in the upper four bytes.
Figure 30.
Each password register contains the three byte password that is compared with the three byte password that is sent for
verification with the Check Password command. The storage locations of the three password bytes is illustrated in the
bottom half of Figure 30.
Table 76.
Table 77.
AT88SC0808/1616/3216/6416CRF, AT88RF04C
ADDR
PAC Register
PAC Register
$CC
$EE
$FC
$FF
$FF
$FE
$F8
$F0
$E0
$C0
$88
$00
$80
$00
All Other Values Are Not Supported
All Other Values Are Not Supported
Password Set Register Format
Password Attempt Counter Coding for the Default DCR Configuration of 88SC PICCs.
Password Attempt Counter Coding for the Extended Trials Allowed DCR Configuration of 88SC PICCs.
PAC
PAC
$0
PW1
4 Failed Attempts (LOCK)
8 Failed Attempts (LOCK)
$1
No Failed Attempts
No Failed Attempts
2 Failed Attempts
3 Failed Attempts
2 Failed Attempts
3 Failed Attempts
4 Failed Attempts
5 Failed Attempts
6 Failed Attempts
7 Failed Attempts
1 Failed Attempt
1 Failed Attempt
Description
Description
PW Write z
PW2
$2
PW3
$3
PAC
PAC
$4
PW1
$5
PW Read z
PW2
$6
PW3
$7
5276C–RFID–3/09
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