datasheetbank_Logo
Integrated circuits, Transistor, Semiconductors Search and Datasheet PDF Download Site

AT88SC153 View Datasheet(PDF) - Atmel Corporation

Part Name
Description
View to exact match
AT88SC153 Datasheet PDF : 24 Pages
1 2 3 4 5 6 7 8 9 10 Next Last
Configuration Zone
Answer-to-reset
32-bit register defined by Atmel
Lot History Code
32-bit register defined by Atmel
Fab Code
16-bit register defined by Atmel
Card Manufacturer Code 16-bit register defined by the card manufacturer
Issuer Code
64-bit register defined by the card issuer
Access Registers
Three 8-bit access registers defined by the issuer, one for each user zone (active low)
Table 6. Access Registers
Bit 7
WPE
Bit 6
RPE
Bit 5
ATE
Bit 4
AOW
Bit 3
PWS
Bit 2
WLM
Bit 1
MDF
Bit 0
PGO
Write Password Enable (WPE): If enabled (WPE = 0), the user is required to verify
the write password to allow write operations in the user zone. If disabled (WPE = 1), all
write operations are allowed within the zone. Verification of the write password also
allows the read and write passwords to be changed.
Read Password Enable (RPE): If enabled (RPE = 0), the user is required to verify
either the read password or write password to allow read operations in the user zone.
Read operations initiated without a verified password will return $00 (or the status of the
fuse bits, if either CMA or PER are still intact). Verification of the write password will
always allow read access to the zone. RPE = 0and WPE = 1is allowed but is not
recommended.
Authentication Enable (ATE): If enabled (ATE = 0), a valid authentication sequence
is required for both read and write and must be completed before access is allowed to
the user zone. If disabled (ATE = 1), authentication is not required for access.
Authentication Only for Write (AOW): If enabled (AOW = 0), a valid authentication
sequence must be completed before write access is allowed to the user zone. Read
access to this zone is allowed without authentication. This bit is ignored if ATE is
enabled.
Password Select (PWS): This bit defines which of the two password sets must be pre-
sented to allow access to the user zone. Each access register may point to a unique
password set, or access registers for multiple zones may point to the same password
set. In this case, verification of a single password will open several zones, combining the
zones into a single larger zone.
Write Lock Mode (WLM): If enabled (WLM = 0), the 8 bits of the first byte of each user
zone page will define the locked/unlocked status for each byte in the page. Write access
is forbidden to a byte if its associated bit in byte 0 is set to 0. Bit 7 controls byte 7, bit 6
controls byte 6, etc.
Modify Forbidden (MDF): If enabled (MDF = 0), no write access is allowed in the
zone at any time. The user zone must be written before the PER is blown.
6 AT88SC153
1016DSMEM04/04
 

Share Link: 

datasheetbank.com [ Privacy Policy ] [ Request Datasheet ] [ Contact Us ]