SC23M28

HANGZHOU SILAN MICROELECTRONICS CO.,LTD

REV:1.0

2006.07.21

Http: www.silan.com.cn

Page 7 of 10

Figure7 Time sequence of write error counter and PSC code authentication

If the initial value of the error counter is “00”, the error counter cannot be written, and also cannot go through

the password authentication. After the PSC authentication, I/O port will change from “1”to “0”at the raising edge

of the second clock no matter pass the authentication or not. When RST changes from “0”to“1”, I/O port returns

to “1”. The flow chart is as follows:

Figure8 PSC authentication flow chart