SC23M42A SILAN [Silan Microelectronics Joint-stock], SC23M42A Datasheet - Page 7

• Manufacturer Part Number: SC23M42A
• Description: 256BYTE MEMORY CARD IC
• Manufacturer: SILAN [Silan Microelectronics Joint-stock]

4) Write protect memory
5) Read password memory
6) Change password memory
write-protect bit is active, and the unit is only readable.
from “ 1” to “ 0” .
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http: www.silan.com.cn
Binary
Hex
Binary
Hex
Binary
Hex
Compare the command input data and the original data of this unit, if they are the same, then corresponding
Read the 4 bytes content of password memory.
The password memory can be changed after PSC authentication, or else some bit of error counter will change
0
B7
B7
B7
0
0
0
B6
B6
B6
0
0
1
B5
B5
B5
1
1
1
B4
B4
B4
Control
Control
Control
1
1
3CH
31H
39H
0
B3
B3
B3
1
1
0
B2
B2
B2
1
0
0
B1
B1
B1
0
0
1
B0
B0
B0
0
1
Address
00H… 1FH
No effect
No effect
Address
00H… 03H
Address
Address
Address
A7… A0
A7… A0
A7… A0
REV:1.0
Input data
Input data
No effect
No effect
Input data
Input data
D7… D0
D7… D0
D7… D0
SC23M42
Data
Data
Data
Page 7 of 11
2006.07.21