AT88SC3216CRF-MVB1G Atmel, AT88SC3216CRF-MVB1G Datasheet - Page 95

• 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

5276C–RFID–3/09
The three Communication Security Mode control bits: AM0, AM1, and ER control the communication security
requirements for the User Zone as shown in Table 65. By default authentication and encryption communication security
are disabled. See Appendix K for information on Encryption Communication Security.
Table 65.
WLM:
By default the Write Lock Mode is disabled. If WLM = 0b then Write lock Mode is enabled and the User Zone is
effectively divided into 8 byte pages with the first byte of each page controlling write access to all 8 bytes. Figure 23
shows an example of WLM on two contiguous 8 byte pages.
Figure 23.
The first byte of each virtual 8 byte page is called the Write Lock Byte. Each bit of the Write Lock Byte controls the
locked status of one byte in the page. Write access is forbidden to a byte if its associated lock bit is set to 0b. Bit 7
controls byte 7, bit 6 controls byte 6, etc.
Note:
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 when PGO is enabled, Write User Zone commands are restricted to a length of
one byte.
AM1
0
0
0
0
1
1
1
1
Page
Page
$00
$08
When WLM is enabled, Write User Zone commands are restricted to a length of one byte.
AM0
0
0
1
1
0
0
1
1
Communication Security Mode options for 88SC PICCs.
Write Lock Mode control.
Example of byte level access control using the Write Lock Mode.
Modify Forbidden mode control.
Program Only mode control.
11011001 b
10101010 b
Locked
$0
$8
ER
0
1
0
1
0
1
0
1
Reserved For Future Use (Not Supported)
Dual Access Authentication Mode
Reserved For Future Use (Not Supported)
Authentication for Read / Write
Reserved For Future Use (Not Supported)
Authentication for Write
Encryption for Read / Write
No Authentication or Encryption Required
Locked
Locked
AT88SC0808/1616/3216/6416CRF, AT88RF04C
$xx
$xx
$1
$9
Communication Security Mode
Locked
$xx
$xx
$A
$2
$xx
$xx
$B
$3
Locked
$xx
$xx
$C
$4
Locked
Read / Write Access
Read / Write Access
Read / Write Access
Read / Write Access
$xx
$xx
Auth. Key (AK)
$D
$5
N/A
N/A
N/A
N/A
Locked
$xx
$xx
$E
$6
$xx
$xx
Pgm-Only Key (POK)
$7
$F
Read / Program Access
N/A
N/A
N/A
N/A
N/A
N/A
N/A
< Address
< Data
< Status
< Address
< Data
< Status
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