SC23M42
256-BYTE MEMORY CARD IC
DESCRIPTION
SC23M42 is a smart card module utilizing CMOS EEPROM
technology. 256 bytes main memory, 32-bit protection memory, 3
bytes user password, and 3-bit password wrong counter (Value:
00000D2D1D0). And the periphery interface is compatible with
ISO7816 agreement (synchronous propagation).
FEATURES
* 256 X 8 bit EEPROM
* Byte addressing
* Write-protect area (former 32 bytes) can execute the write-protect
separately, and after the write-protect, the content cannot be
changed.
* 32 X 1bit protect memory
* Serial two buses interface
* More than 100,000 times write endurance cycles
* Data retention of more than 10 years
* Contact definition and serial interface comply to ISO7816
specification (synchronous propagation)
* 3 Bytes user password, 3 bits(bit0-bit2) error counter
* Before the password is checked, all the data can be read; if the
password is correct, you can write or amend the data and the
password.
* Password error counter, and the initial value is 3. Checking the
password once, subtracts 1, if the value of the counter is 0, the
memory card will be locked automatically, and the data can only
be read, the password cannot be checked again; When the value
of the counter is not 0, if the password checking is correct for one
time, the value comes back to initial value.
* Comply to SLE4442
* used for various IC memory cards.
ORDERING INFORMATION
Device
SC23M42A
SC23M42B
Package
P6-05
MCTS012402
APPLICATIONS
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http: www.silan.com.cn
REV:1.0
2006.07.21
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