AT88SA10HS-TSU-T Atmel, AT88SA10HS-TSU-T Datasheet - Page 2

• Manufacturer Part Number: AT88SA10HS-TSU-T
• Description: IC HOST AUTHENTICATION SOT23-3
• Manufacturer: Atmel
• Series: CryptoAuthentication™r
• Type: Authentication Chipr

Specifications of AT88SA10HS-TSU-T

• Applications: Networking & Communications
• Mounting Type: Surface Mount
• Package / Case: SOT-23-3
• Operating Supply Voltage: 2.5 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Interface Type: 1 Wire
• Minimum Operating Temperature: - 40 C
• Number Of Timers: 1
• Program Memory Size: 72 bit
• Program Memory Type: ROM
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

1.1.
1.2.
2
Note:
Memory Resources
Fuse
ROM
Fuse Map
The AT88SA10HS incorporates 128 one-time fuses within the chip. Once burned, there is no way to reset the value of
a fuse. All fuses, with the exception of the Fuse MfrID and Fuse SN bits initialized by Atmel, have a value of 1 when
shipped from the Atmel factory and transition to a 0 when they are burned. These fuses are burned at system
personalization and cannot be changed after that time.
Table 1.
AT88SA10HS Host Authentication Chip [Preliminary]
0
64
87
88
96
Fuse #
63
86
95
127
The chip implements a failsafe internal watchdog timer that forces it into a very low power mode after a certain
time interval regardless of any current activity. System programming must take this into consideration. Refer to
3.5
ROM MfrID 2 bytes of ROM that specifies part of the manufacturing ID code. This value is assigned by Atmel
ROM SN
RevNum
for more details.
Fuse Map:
Secret Fuses
Status Fuses
Fuse Enable
Fuse MfrID
Fuse SN
Block of 128 fuse bits that can be written through the 1 wire interface. Fuse[87] has special
meanings, see Section 1.2 for more details. Fuses[88:95] are part of the manufacturer ID value fixed
by Atmel. Fuses[96:127] are part of the serial number programmed by Atmel which is guaranteed to
be unique. See Section 1.3 for more details on the Manufacturing ID and Serial Number.
Metal mask programmed memory. Unrestricted reads are permitted on the first 64 bits of this array.
The physical ROM will be larger and will contain other information that cannot be read. The following
three fields are stored in the ROM:
and is always the same for all chips of a particular model number. For the AT88SA10HS, this
value is 0xFF FF. ROM MfrID can be read by accessing ROM bytes 0 & 1 of Address 0.
2 bytes of ROM that can be used to identify chips among others on the wafer. These bits
reduce the number of fuses necessary to construct a unique serial number. The MaskSN
is read by accessing ROM bytes 2 & 3 of Address 0. The serial number can always be
read by the system but is never included in the message digested by the HOST
command.
4 bytes of ROM that are used by Atmel to identify the model mask and/or design revision
of the AT88SA10HS chip. These bytes can be freely read as the four bytes returned by
ROM address 1, however system code should not depend on this value as it may change
from time to time.
Name
These fuses can be securely written by the BurnSecure command but can never
be read with the Read command
These fuses can be written with the BurnSecure command and can always be
read with the Read command.
The HOST commands ignore the values of Fuse[0-63] until this bit is burned.
Once this bit is burned, the BurnSecure command is disabled.
See Section 1.3. Set by Atmel, can’t be modified in the field
See Section 1.3. Set by Atmel, can’t be modified in the field
Description
8595B–SMEM–09/09