BL7432SM Low voltage Intelligent 2K bits
EEPROM
Description
BL7432SM is an IC for Chip Card made by
0.35um CMOS EERPOM process. It has 256
bytes EEPROM with write protect function .
It
can be operated at low voltage. With its contact
configuration in accordance to ISO standard
7816.BL7432SM can be widely used in different
types of IC memory cards.
Figure 1
Features
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256 x 8 bit EEPROM organization
Byte-wise addressing
Irreversible byte-wise write protection of lowest 32 addresses (Byte 0 ……31)
32 x1 bit organization of protection memory
Two-wire link protocol
End of processing indicated at data output
Answer-to-Reset according to ISO standard 7816-3
Programming time 2.5 ms per byte for both erasing and writing
Minimum of 100,000 write/erase cycles
Data retention time :>10 years
Contacts configuration and serial interface according to ISO 7816 standard (synchronous
transmission)
Pin Description
Pin No.
1
2
3
4
5
6
7
8
Parameter
C1
C2
C3
C4
C5
C6
C7
C8
Symbol
V
dd
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
8 Pages
5/18/2010
Wrote by ICCD
BELLING [ SHANGHAI BELLING CO., LTD. ]
