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ATA5558

更新时间： 2022-04-23 23:00:11

品牌	Logo	应用领域
爱特美尔 - ATMEL		/
页数	文件大小	规格书
42页	672K
描述
1 kbit R/W IDIC with Deterministic Anticollision

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ATA5558 数据手册

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

data and no error code.

Figure 2-5. System Memory Access

Read Access

Write Access

Configuration

Page Security

Traceability 3

Traceability 2

Traceability 1

Tag ID 3

Configuration

Page Security

Traceability 3

Traceability 2

Traceability 1

Tag ID 3

Block Name

Unlimited Access

Block Name

Password Access

Tag ID 2

Tag ID 1

Password - Write

Password - Read

Password - Write

Password - Read

Block Name

No Access

Figure 2-6. Page Security Register

MSB.............

...........LSB

L 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

P7a P7b P6a P6b P5a P5b P4a P4b P3a P3b P2a P2b P1a P1b P0a P0b

reserved

Page 0

Page 7

Code

Password required for

Page 1

Pxa Pxb

write

read

Page 6

Page 5

Page 4

Page 2

Page 3

yes

reserved

Page Security Data

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 =

be reprogrammed

), the entire block including the lock bit itself can no longer

4681C–RFID–09/05

1...4 5 678 9 10...42

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