Datasheet

14Maxim Integrated
DS2465
DeepCover Secure Authenticator with
SHA-256 Coprocessor and 1-Wire Master Function
ABRIDGED DATA SHEET
Refer to the full data sheet for this information.
The subsequent pages describe the function commands in a concise, table-like fashion.
Copy Scratchpad
Command Code 5Ah
Parameter Byte Data destination, segment number (Table 7)
Usage
Transferring scratchpad data to user EEPROM pages;
Other Notes
If the target memory is write-protected, this command cannot not complete
successfully. Data is taken from the scratchpad location that corresponds to the
segment number. Example: segment 0 corresponds to SP+0 to SP+3, addresses
00h to 03h.
Command Restrictions
The data must first be written to the scratchpad.
The target memory must not be write-protected (locked).
Error Conditions (Error Response)
If the target memory is write protected, the memory write cycles do not take place.
In that case the device is not busy and acknowledges its I
2
C address immediately
when accessed.
MAC Notes
Refer to the full data sheet.
I
2
C Busy Duration
For 1 O t
PROG
or 8 O t
PROG
depending on the parameter byte, counted from the
rising SCL edge of the parameter byte acknowledge bit.
Command Duration I
2
C busy duration + 1.09µs
1-Wire Activity None
Read Pointer Position 1-Wire Master Status register
Master Status Bits Affected None
Master Configurations Affected None
1-Wire Port Configurations Affected None