AT88SC3216CRF-MVB1G Atmel, AT88SC3216CRF-MVB1G Datasheet - Page 97

• Manufacturer Part Number: AT88SC3216CRF-MVB1G
• Description: CRYPTOMEMORY 32KBIT 16ZONE MVB
• Manufacturer: Atmel
• Series: CryptoMemory®, CryptoRF®r

Specifications of AT88SC3216CRF-MVB1G

• Rf Type: Read / Write
• Frequency: 13.56MHz
• Features: ISO1444-2, 1444-3, 32-kbits
• Package / Case: MVB Module
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

H.2.1. Password Registers (PR) [88SC]
5276C–RFID–3/09
Table 67.
MDF:
By default the Modify Forbidden mode is disabled. If MDF = 0b then Modify Forbidden mode is enabled and no write
access is allowed to the User Zone. The User Zone effectively becomes Read Only Memory (ROM).
PGO:
By default the Program Only mode is disabled. If PGO = 0b then data within the User Zone may be changed from 1b to
0b, but never from 0b to 1b. Note that PGO is only available in User Zone 1. If PGO is enabled, then the Write User
Zone data verification function is disabled when writing to User Zone 1 of 88RF PICCs. The PGO option is not available
in User Zones 0, 2, and 3 of 88RF PICCs.
There is one Password Register for each User Zone in the user memory. The default state of this register is $FF.
Figure 26.
The Password Register bit definitions are shown in Figure 26. Changes to the PR registers are effective immediately.
AK:
The Authentication 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. Any number of PR registers can point to the same
key set, allowing multiple User Zones to use the same key set.
Table 68.
Bit 7
AK1
M2
0
0
0
0
1
1
1
1
1
AK1
0
0
1
1
M1
Bit 6
AK0
0
0
1
1
0
0
1
1
Communication Security Mode options for 88RF PICCs.
Modify Forbidden mode control.
Program Only mode control.
Definition of the User Zone Password Registers on 88SC PICCs.
Authentication Key Set selection bits.
Coding of the Authentication Key Set select bits for CryptoRF communication security.
1
M0
POK1
0
1
0
1
0
1
0
1
Bit 5
AK0
0
1
0
1
1
Reserved For Future Use (Not Supported)
Reserved For Future Use (Not Supported)
Authentication for Read / Encryption for Write
Authentication for Read / Write
Encryption for Write
Authentication for Write
Encryption for Read / Write
No Authentication or Encryption Required
AT88SC0808/1616/3216/6416CRF, AT88RF04C
POK0
Bit 4
Communication Security Mode
1
Authentication Key
Secret Seed G
Secret Seed G
Secret Seed G
Secret Seed G
Bit 3
RFU
1
Bit 2
PW2
0
1
2
3
1
PW1
Bit 1
1
Encryption Key
Session Key S
Session Key S
Session Key S
Session Key S
Bit 0
PW0
1
Primary Key (PK)
Read / Write Access
Read / Write Access
Read / Write Access
Read / Write Access
Read / Write Access
Default Value
0
1
2
3
N/A
N/A
N/A
Read-Only Key (ROK)
Read Access
Read Access
Read Access
N/A
N/A
N/A
N/A
N/A
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