BL7448SM データシートの表示（PDF） - Shanghai Belling Co., Ltd.
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BL7448SM Datasheet PDF : 7 Pages
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BL7448SM Intelligent 8K-bit
EEPROM
Description
BL7448SM is an IC Card chip (module) made
by 0.35um CMOS EERPOM process. It has
1024 byte EEPROM with logical encryption
and function.
Figure 1
Features
• 1024 x 8 bit EEPROM organization
• Byte-wise addressing
Irreversible byte-wise write protection of every Byte
• 1024 x1 bit organization of protection memory
• Serial three-wire link
• End of processing indicated at data output
• Minimum of 100,000 write/erase cycles
• Data retention time :>10 years
• Contacts configuration and serial interface according to ISO 7816 standard
(synchronous transmission)
• Data can only be changed after entry of the correct 2-byte
Programmable security code
Pin Description
Pin No.
1
Parameter
C1
2
C2
3
C3
4
C4
5
C5
6
C6
7
C7
8
C8
Symbol
Vdd
RST
CLK
N.C.
GND
NC
I/O
NC
Function Description
Supply Voltage
Reset signal
Clock input
Not connected
Ground
Not connected
Bidirectional data line (open drain)
Not connected
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Total 7 Pages
8/16/2006
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