AT88SA100S-SH-T Atmel, AT88SA100S-SH-T Datasheet - Page 15

• Manufacturer Part Number: AT88SA100S-SH-T
• Description: IC BATTERY AUTHENTICATION 8SOIC
• Manufacturer: Atmel
• Series: CryptoAuthentication™r

Specifications of AT88SA100S-SH-T

• Function: Battery Authentication
• Voltage - Supply: 2.7 V ~ 5.25 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (0.154", 3.90mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

5.2.
5.3.
8558E–SMEM–8/10
Read
Reads four bytes from Fuse, ROM or MemValid. Any attempt to present the chip with an illegal Fuse address will
result in an error return.
Table 5-4.
Table 5-5.
Table 5-6.
BurnFuse
Burns one of the 88 user accessible fuse bits.
The values in fuses #88-127 are reserved for Fuse MfrID and Fuse SN and cannot be blown via this command.
All addresses above 0x57 (87) will result in an error.
Fuses, with the exception of those initialized by Atmel
and transition to a zero when they are burned.
Fuse bits zero through seven of the fuse array are word lock bits. Burning one of these has the effect of locking
the corresponding 16-bit word within Fuse. Bit zero locks fuses 0-15, bit one locks fuses 16-31 and so on. If bit
zero is burned, then the value of the lock bits can no longer be changed. The values of lock bits six and seven are
ignored by the chip.
The power supply pin must meet the V
fuses reliably. If Vcc is greater than 4.5V, then the BurnTime parameter should be set to 0x00 and the internal
burn time will be 250µs. If Vcc is less than 4.5V but greater than V
set to 0x8000 and the internal burn time will be up to 190ms. The chip does NOT internally check the supply
voltage level.
There is a very small interval during t
must not be removed during this interval and the watchdog timer must not be allowed to expire during this
interval, or the fuse may end up in a state where it reads as un-burned but cannot be burned.
Opcode
Param1
Param2
Data
Name
Contents
Name
ROM
Fuse
MemValid
Input Parameters
Output Parameters
Mode Encoding
Name
READ
Mode
Address
–
Value
0x00
0x01
0x03
Size
4
EXEC_BURN
Notes
The contents of the specified memory location
Notes
Reads four bytes from the ROM. Bit 1 of the address parameter must be zero
Reads the value of 32-fuses
Returns four bytes. The LSB of the first byte indicates whether or not the contents of
the SRAM are valid. All other bits in all bytes have a value of zero. The address
parameter is ignored
BURN
Size
specification during the entire BurnFuse command in order to burn
1
1
2
0
when the fuse element is actually being burned. The power supply
Notes
0x02
Fuse, ROM or MemValid. See to Table 12
Which 4-bytes within array. Bits 2-15 are ignored by the chip and
should be zeros
®
, have a value of one on shipment from the Atmel factory
BURN
then the BurnTime parameter should be
Atmel AT88SA100S
15