AT88SC1608 データシートの表示（PDF） - Atmel Corporation
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AT88SC1608 Datasheet PDF : 25 Pages
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Figure 3. Access Rights
When the fuses are all “1”s, read and write are allowed in the entire memory. Before
blowing the FAB fuse, Atmel writes the entire memory to “1”, except the fabrication sub-
zone and the secure code.
Zone
Access
FAB = 0
CMA = 0
PER = 0
Fabrication
(Except CMC)
Read
Write
Free
Forbidden
Free
Forbidden
Free
Forbidden
Fabrication
(Only CMC)
Read
Write
Free
Secure Code
Free
Forbidden
Free
Forbidden
Access
Read
Write
Free
Secure Code
Free
Secure Code
Free
Forbidden
Authentication
Read
Write
Free
Secure Code
Free
Secure Code
Free
Forbidden
Secret
Read
Write
Secure Code
Secure Code
Secure Code
Secure Code
Forbidden
Forbidden
Read
Free
Free
Free
Test
Write
Free
Free
Free
Passwords
Read
Write
Secure Code
Secure Code
Secure Code
Secure Code
Write PW
Write PW
Read
Free
Free
Free
PAC
Write
Secure Code
Secure Code
Write PW
Read
AR
AR
AR
User Zones
Write
AR
AR
AR
Note:
CMC = Card Manufacturer Code
AR = Access Rights as defined by the access register
PW = Password
6 AT88SC1608
0971G–SMEM–04/04
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