AT88SC153-10SI-00 Atmel, AT88SC153-10SI-00 Datasheet - Page 6

• Manufacturer Part Number: AT88SC153-10SI-00
• Manufacturer: Atmel

Specifications of AT88SC153-10SI-00

• Operating Temperature (max): 85C
• Operating Temperature (min): -40C
• Package Type: SOIC
• Mounting: Surface Mount
• Pin Count: 8
• Operating Temperature Classification: Industrial
• Lead Free Status / Rohs Status: Not Compliant

Configuration Zone
Answer-to-reset
Lot History Code
Fab Code
Card Manufacturer Code
Issuer Code
Access Registers
6
AT88SC153
32-bit register defined by Atmel
32-bit register defined by Atmel
16-bit register defined by Atmel
16-bit register defined by the card manufacturer
64-bit register defined by the card issuer
Three 8-bit access registers defined by the issuer, one for each user zone (active low)
Table 6. Access Registers
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 = “0” and WPE = “1” is 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.
WPE
Bit 7
Bit 6
RPE
Bit 5
ATE
AOW
Bit 4
Bit 3
PWS
WLM
Bit 2
Bit 1
MDF
1016D–SMEM–04/04
Bit 0
PGO