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UM1524 Datasheet(PDF) 25 Page - STMicroelectronics

Part # UM1524
Description  This document describes the functions
PDF  35 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

UM1524 Datasheet(HTML) 25 Page - STMicroelectronics

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UM1524
EEPROM log data structure
Doc ID 022901 Rev 1
25/35
●
Monthly tamper log
For the monthly tamper log, the following four types of tamper data are logged.
–
Earth tamper
–
Reverse tamper
–
Neutral missing tamper
–
Case tamper.
For each tamper, there are 4 entries per month.
So, for each type of tamper, the storage per month is:
–
Tamper count: 1 byte
–
Four entries of date: 3 bytes x 4 : 12 bytes
–
Four entries of time: 3 bytes x 4 : 12 bytes.
In one tamper entry log, tamper count: number of tampers in a month.
D: date and T: time each is of 3 bytes.
Table 12.
Monthly tamper log
1 byte
3 bytes
3 bytes
Tamper count
Date
Time



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