SLE4442 Siemens, SLE4442 Datasheet - Page 22
SLE4442
Manufacturer Part Number
SLE4442
Description
(SLE4432 / SLE4442) 256 Byte EEPROM
Manufacturer
Siemens
Datasheet
1.SLE4442.pdf
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2.3.6 Update Security Memory (SLE 4442 only)
Regarding the reference data bytes this command will only be executed if a PSC has been
successfully verified before. Otherwise only each bit of the error counter (Address 0) can be written
from “1” to “0”. The execution times and the required clock pulses are the same as described under
UPDATE MAIN MEMORY.
Command: UPDATE SECURITY MEMORY
Binary
Hexadecimal
2.3.7 Compare Verification Data (SLE 4442 only)
This command can only be executed in combination with an update procedure of the error counter
(see PSC verification). The command compares one byte of the entered verification data byte with
the corresponding reference data byte. For this procedure clock pulses are necessary during the
processing mode.
Command: COMPARE VERIFICATION DATA
Binary
Hexadecimal
Figure 10
Compare Verification Data
Semiconductor Group
B7
B7
0
0
B6
B6
0
0
B5
B5
1
1
B4
B4
1
1
Control
Control
39
33
H
H
B3
B3
1
0
20
B2
B2
0
0
B1
B1
0
1
B0
B0
1
1
Address
A7…A0
Address
00
Address
A7…A0
Address
00
H
H
…03
…03
H
H
Data
D7…D0
Input data
Input data
Data
D7…D0
Input data
Input data
SLE 4432
SLE 4442
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