BL7432SM Datasheet, PDF (1/8 Pages) SHANGHAI BELLING CO., LTD. – Low voltage Intelligent 2K bits EEPROM

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
• 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
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
http://www.belling.com.cn
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Total 8 Pages
5/18/2010
Wrote by ICCD