BL7430EC 104-bit EEPROM Smart

Counter Circuit

http://www.belling.com.cn

- 1 -

8/16/2006

Total 4 Pages

Description

BL7430EC is a IC Card chip (module)made

by 1.2

µmCMOS 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.

C

1

C

2

C

3

C

7

C

6

C

5

V

CC

RST

CLK

GND

N.C.

I/O

Pin assignment

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.

Parameter

Symbol

Test Condition

1

C1

Supply Voltage

2

C2

RST

Control input (reset signal)

3

C3

CLK

Clock input

4

C5

GND

Ground

5

C6

N.C.

Not connected

6

C7

I/O

Bidrectional data line (open drain)

Function Description

Block Diagram