at88sa100s ATMEL Corporation, at88sa100s Datasheet - Page 14

• Manufacturer Part Number: at88sa100s
• Description: Battery Authentication Chip
• Manufacturer: ATMEL Corporation

4.2.
14
Read
Reads 4 bytes from Fuse, ROM or MemValid. Any attempt to present the chip with an illegal Fuse address will result in
an error return.
Table 10.
Table 11.
Table 12.
AT88SA100S [Preliminary]
Opcode
Param1
Param2
Data
Contents
ROM
Fuse
MemValid
Name
Name
Input Parameters
Output Parameters
Mode Encoding
READ
Mode
Address
–
Name
Value
0x00
0x01
0x03
Size
4
The contents of the specified memory location.
Reads four bytes from the ROM. Bit 1 of the address parameter must be 0.
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 0.
The address parameter is ignored.
Size
1
1
2
0
0x02
Fuse, ROM or MemValid. Refer to
Which 4 bytes within array. Bits 2-15 are ignored by the chip
and should be 0’s.
Notes
Notes
Notes
Table 12.
8558B–SMEM–09/09