SC23M28 Silan Microelectronics, SC23M28 Datasheet - Page 6

• Manufacturer Part Number: SC23M28
• Description: 8KBIT MEMORY CARD IC
• Manufacturer: Silan Microelectronics

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3.2
3.3
read PSC, you will get “ 00” .
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http: www.silan.com.cn
The SC23M28 is only readable without PSC authentication. The content of PSC cannot be read, if you try to
The authentication steps are as follows:
--Write one to not written error counter (EC) bit and the EC address is“ 1021” ;
--Input the first byte data of PSC code, and the address is“ 1022” ;
--Input the second byte data of PSC code, and the address is “ 1023” ;
--If pass the authentication, EC can be erased.
1) Read with protect bit
2) Read without protect bit
Read operation
Password authentication
together, 9 bits in total (Figure6). After 9 clock cycles, the address increases by 1 automatically.
cycles, the address increases by 1 automatically.
This command will read the content of the destination address unit and the corresponding protect bit
This command will only read the content of the destination address unit Figure6 . After 8 clock
When RST changes from “ 0” to“ 1” , read operation stops.
Figure5 Time sequence of erase or write error
Figure6 Read operation time sequence
REV:1.0
SC23M28
Page 6 of 10
2006.07.21