BL7430EC Datasheet, PDF (1/4 Pages) SHANGHAI BELLING CO., LTD. – It has 104bits EEPROM with logical encryption and function

BL7430EC 104-bit EEPROM Smart
Counter Circuit
Description
BL7430EC is a IC Card chip (module)made
by 1.2µmCMOS EERPOM process. It has 104
bits EEPROM with logical encryption and
function. It can be widely used in payphone
Card and other kinds of prepay IC Cards.
Pin assignment
V
CC
C₁
RST C₂
C₅ GND
C₆ N.C.
CLK C₃
C₇ I/O
Features
• 104 x 1 bit organization
• Maximum of 20480 counting units
• Logical encryption
• EEPROM programming time :5ms
• Supply voltage:5V
• Working current:<1mA
• Minimum erasing times 100,000
• 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
Parameter
C1
C2
C3
C5
C6
C7
Symbol
VCC
RST
CLK
GND
N.C.
I/O
Test Condition
Supply Voltage
Control input (reset signal)
Clock input
Ground
Not connected
Bidrectional data line (open drain)
Function Description
Block Diagram
http://www.belling.com.cn
-1-
Total 4 Pages
8/16/2006