at88sc0104c ATMEL Corporation, at88sc0104c Datasheet - Page 24

• Manufacturer Part Number: at88sc0104c
• Description: Cryptomemory Specification For Standard Mode Of Operation
• Manufacturer: ATMEL Corporation

20
AT88SC0104/0204/0404/0808/1616/3216/6416/12816/25616C
.
Table 5-6.
The bits SEC, PER, CMA and FAB are non-volatile fuses blown at the end of various steps in
the manufacturing and personalization process. Once blown, these fuses can never be reset.
Atmel blows the SEC fuse to lock the lot history code before the device leaves the factory. Blow-
ing the remainder of the fuses must follow the sequence:
Any attempt to blow a fuse out of sequence will be unsuccessful.
Table 5-7 on page 21
each fuse condition
1. FAB – To lock the Answer To Reset and the Fab Code portions of the Configuration
2. CMA – To lock the Card Manufacturer Code of the Configuration Memory
3. PER – To lock the remainder of the Configuration Memory
resv
F
7
Memory.
resv
Device Fuses
F
6
provides a summary of access rights for all portions of the memory for
resv
F
5
resv
F
4
SEC
F
3
PER
F
2
CMA
F
1
5210A–SMIC–04/07
FAB
F
0