AT88SC1616CRF View Datasheet(PDF) - Atmel Corporation
Part Name
Description
MFG CO.
'AT88SC1616CRF' PDF : 158 Pages View PDF
POK:
Program-Only Key Set selection bits.
The Program-Only Key Set selection bits control the key set assigned to a User Zone for communication security. The
Access Register bits determine the Communication Security mode. The POK bits are only used if Dual Access
Authentication mode has been selected. Any number of PR registers can point to the same key set, allowing multiple
User Zones to use the same key set.
Table 69. Coding of the Program-Only Key Set select bits for CryptoRF communication security.
POK1
POK0
Authentication Key
0
0
Secret Seed G0
0
1
Secret Seed G1
1
0
Secret Seed G2
1
1
Secret Seed G3
PW: Password Set selection bits.
The Password Set selection bits control the password set assigned to a User Zone. Table 70 shows the coding of
these register bits. Any number of PR registers can point to the same password set, allowing multiple User Zones to
use the same password set.
Table 70. Coding of the Password Set select bits for the 8K bit and larger CryptoRF devices.
PW2
PW1
PW0
Password Set
0
0
0
0
0
0
1
1
0
1
0
2
0
1
1
3
1
0
0
4
1
0
1
5
1
1
0
6
1
1
1
7
H.2.2. Key Registers (KR) [88RF]
There is one Key Register for each User Zone in the user memory. The default state of this register is $FF.
Figure 27. Definition of the User Zone Key Registers for 88RF PICCs.
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
PK1 PK2 ROK1 ROK2 RFU PW2 PW1 PW0
1
1
1
1
1
1
1
1
Default Value
The Key Register bit definitions are shown in Figure 27. Changes to the KR registers are effective immediately.
PK:
Primary Key Set selection bits.
The Primary Key Set selection bits control the key set assigned to a User Zone for communication security. The
Access Register M bits determine the Communication Security mode associated with the PK bits.
98 AT88SC0808/1616/3216/6416CRF, AT88RF04C
5276C–RFID–3/09
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