AT88SC3216CRF-MVB1G Atmel, AT88SC3216CRF-MVB1G Datasheet - Page 116

• 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

K.3.
K.3.1. M = 010b Security - Authentication for Read / Encryption for Write
K.3.2. M = 100b Security - Encryption for Write
K.3.3. M = 110b Security - Encryption for Read / Write
116
Encryption Communication Security for a User Zone is enabled by programming the Access Register (AR) and Key
Register (KR) for the zone. The Communication Security Mode (M) bits of the Access Register determine the
Communication Security requirements for the User Zone. The Key Register determines which Key Set(s) are used to
access the User Zone. Configuration of the AR and KR registers is described in Appendix H.
Table 94.
Table 94 shows the three Encryption Security options for 88RF PICCs, plus the default setting. By default M = 111b
and no Authentication or Encryption Activation is required to access the user memory.
When M = 010b Authentication is required for Read access to the User Zone. Encryption Activation is required for Write
Access to the User Zone. If Authentication is performed with the key identified in the ROK bits of the Key Register, then
Read-Only access is granted to the User Zone. If Encryption Activation is performed with the key identified in the PK
bits of the Key Register, then Read/Write access is granted to the User Zone. A checksum is required for write
operations.
The M = 010b mode is a new feature in 88RF PICCs. This mode is not available in 88SC devices.
When M = 100b Encryption is required for Write access to the User Zone. If Encryption Activation is performed with the
key identified in the PK bits of the Key Register, then Read/Write access is granted to the User Zone. Read-Only
access does not require Authentication or Encryption Activation. A checksum is required for write operations.
The M = 100b mode is a new feature in 88RF PICCs. This mode is not available in 88SC devices.
When M = 110b Encryption is required for Read or Write access to the User Zone. If Encryption Activation is performed
with the key identified in the PK bits of the Key Register, then Read/Write access is granted to the User Zone. If
Encryption Activation is performed with the key identified in the ROK bits of the Key Register, then Read-Only access is
granted to the User Zone. A checksum is required for write operations.
If the PK and ROK bits of the Key Register select the same Key Set, then the Read-Only function is effectively
disabled. Encryption Activation of 88RF PICCs with the PK key results in behavior identical to 88SC devices. The
Read-Only function is not supported by 88SC devices.
AT88SC0808/1616/3216/6416CRF, AT88RF04C
Encryption Security Options [88RF]
M2
0
1
1
1
M1
1
0
1
1
Selecting Encryption using the Communication Security Mode bits of the Access Register.
M0
0
0
0
1
Authentication for Read / Encryption for Write
Encryption for Write
Encryption for Read / Write
No Authentication or Encryption Required
Communication Security Mode
Primary Key (PK)
Read / Write Access
Read / Write Access
Read / Write Access
N/A
Read-Only Key (ROK)
Read Access
Read Access
N/A
N/A
5276C–RFID–3/09