Intelligent 256-Byte EEPROM with Write Protect Function
Intelligent 256-Byte EEPROM with Write Protect Function
and Programmable Security Code (PSC)
SLE 4432
SLE 4442
Features
q
256
脳
8-bit EEPROM organization
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Byte-wise addressing
q
Irreversible byte-wise write protection of lowest
q
q
q
q
q
q
q
q
32 addresses (Byte 0 ... 31)
32
脳
1-bit organization of protection memory
Two-wire link protocol
End of processing indicated at data output
Answer-to-Reset acc. to ISO standard 7816-3
Programming time 2.5 ms per byte for both erasing
and writing
Minimum of 10
4
write/erase cycles
1)
Data retention for minimum of ten years
1)
Contact configuration and serial interface in accordance
with ISO standard 7816 (synchronous transmission)
M2.2
Additional Feature of SLE 4442
q
Data can only be changed after entry of the correct 3-byte
programmable security code (security memory)
Type
SLE 4432 M2.2
SLE 4432 C
SLE 4442 M2.2
SLE 4442 C
Ordering Code
on request
on request
on request
on request
Package
Wire-Bonded Module M2.2
Chip
Wire-Bonded Module M2.2
Chip
1) Values are temperature dependent, for further information please refer to your Siemens sales
office.
Semiconductor Group
5
07.95