參數(shù)資料
型號(hào)： ATA555814M01-PP
廠商： Atmel Corp.
英文描述： 1 kbit R/W IDIC with Deterministic Anticollision
中文描述： 1千比特讀/寫(xiě)的確定性防撞投資業(yè)務(wù)
文件頁(yè)數(shù)： 7/42頁(yè)
文件大小： 557K
代理商： ATA555814M01-PP
7
4681C–RFID–09/05
ATA5558 [Preliminary]
To access a protected memory block, a Login command with the corresponding read or write
password had to be executed once per session. During the login procedure the 32-bit password
field of the login command is compared with the contents of the corresponding password in the
system memory. If the passwords match, the ATA5558 tag will return an SOF pattern as an
acknowledge signal. If they do not match, the tag will respond with an SOF followed by the
appropriate error code. Writing to a protected memory address which has not been enabled with
the correct LoginWrite password, will result in an error code on completion of the interrogator
command. Reading a password protected memory address which has not been enabled with
the correct LoginRead password, returns a block of all
0
data and no error code.
Figure 2-5.
System Memory Access
Figure 2-6.
Page Security Register
2.7.2
Lock Bit
Each memory block, consists of 32 data bits and an associated lock bit (see
Figure 2-3 on page
4
). Once a block is locked (lock bit =
1
), the entire block including the lock bit itself can no longer
be reprogrammed
Configuration
Page Security
Traceability 3
Traceability 2
Traceability 1
Tag ID 3
Tag ID 2
Tag ID 1
Password - Write
Password - Read
62
61
60
59
58
57
56
55
54
63
Configuration
Page Security
Traceability 3
Traceability 2
Traceability 1
Tag ID 3
Tag ID 2
Tag ID 1
Password - Write
Password - Read
Block Name
Block Name
Block Name
Unlimited Access
Password Access
No Access
Read Access
Write Access
L
3 2 1 0
7 6 5 4
15 14 13 12
19 18 17 16
23 22 21 20
11 10 9 8
27 26 25 24
31 30 29 28
P4a
P3a
P4b
P0b
P2b
P2a
P3b
P7a P7b P6a P6b P5a P5b
P1a P1b P0a
reserved
Page 7
Page 6
Page 5
Page 4
Page 0
Page 1
Page 2
Page 3
Page Security Data
Password required for
write
no
yes
yes
read
no
no
yes
P
x
a
0
1
0
1
P
x
b
0
0
1
1
reserved
reserved
Code
MSB.............
...........LSB
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相關(guān)代理商/技術(shù)參數(shù)
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