DM2016 Data sheet

V2.2

Sep 04,2008

4

3、 SUMMARY

DM2016 is an encryption chip to prevent from copying. It can effectively protect software

design through a decryption arithmetic and the relative secret key of 128 bits. When inputting

encrypted code,the decryption will be excuted,and then generates the plain code.The secret

keys are stored in 128bit OTP memory.

Besides the decryption function, DM2016 embeds 1024bit EEPROM to store data,all the data

transfer is through I

2

C bus.

4、 PIN CONNECTION

5、 PIN DESCRIPTION

Pin Number

Signal Name

I/O

Type

Function

1

A0

I

TTL

I

2

C device address 0

2

STA

I

TTL

Reset，High level is active

3

NC

Not connect

4

GND

/

Power

Power ground

5

SDA

B

TTL

I

2

C data signal

6

SCL

I

TTL

I

2

C clock signal

7

NC

Not connect

8

VCC

/

Power

Power supply 3.3V

Note: STA Signal only accept resistance capacitance reset，The time of STA pulse with is two milliseconds；

and high level must be attained 2V.( The STA pin not support GPIO reset)