AT88SC3216CRF-MVB1G Atmel, AT88SC3216CRF-MVB1G Datasheet - Page 96

• 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.
96
Access Registers (AR) [88RF]
There is one Access Register for each User Zone in the user memory. The default state of this register is $FF, which
disables all of the optional security features.
Figure 24.
Figure 25.
The Access Register definition is shown in Figure 24 and Figure 25. Bit 2 is Reserved for Future Use. Changes to the
AR registers are effective immediately.
PM:
The PM0 and PM1 bits control the password requirements for the User Zone as shown in Table 66. By default, no
password is required for access to the User Zone. If PM = 10b, then write password verification is required for write
access; read access does not require any password. If PM = 01b or 00b, then write password verification is required for
read/write access and read password verification is required for read-only access. The password set assigned to the
zone is specified in the Key Register.
Table 66.
The Access Register M bits determine the Communication Security mode requirements for the User Zone. By default
M = 111b and no Authentication or Encryption Activation is required to access the user memory.
AT88SC0808/1616/3216/6416CRF, AT88RF04C
M:
Bit 7
Bit 7
PM1
PM1
1
1
PM1
1
1
0
0
Bit 6
Bit 6
PM0
PM0
Definition of the Access Register for User Zone 1 of 88RF PICCs.
Definition of the Access Register for User Zones 0, 2, and 3 of 88RF PICCs.
Password Mode selection bits.
Coding of the Password Mode bits of the Access Register.
Communication Security Mode control.
1
1
Bit 5
Bit 5
M2
M2
PM0
1
1
1
0
1
0
Bit 4
Bit 4
M1
M1
1
1
Read and Write Passwords Required
Bit 3
Bit 3
M0
M0
1
1
Write Password Required
No Password Required
Bit 2
RFU
Bit 2
RFU
1
1
Access
Bit 1
MDF
Bit 1
MDF
1
1
Bit 0
PGO
Bit 0
RFU
1
1
Default Value
Default Value
5276C–RFID–3/09