ATA555811C-DDB Atmel, ATA555811C-DDB Datasheet - Page 25

• Manufacturer Part Number: ATA555811C-DDB
• Description: IC IDIC 1KBIT R/W DIE
• Manufacturer: Atmel

Specifications of ATA555811C-DDB

• Function: Read/Write
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Figure 7-1.
4681E–RFID–11/09
Read
multiple
blocks
Read single
block
Write single
block
Select
SelectCRC
GetID
GetID
(Even partial TagID)
0
where n : even
Select All
SelectGroup
m+n: even
0
SelectNGroup
m+n: even
0
GetID
(Odd partial TagID)
0
where n : odd
Note:
Note:
variable length mask positioning pattern
variable length mask positioning pattern
n
n
m+n
m+n
Command Format
Length(TagID)
Length(TagID)-1
Length(TagID)
Length(TagID)
1. The leftmost position of the TagID select mask is determined by m '0' bits followed by a single '1' bit.
2. The TagID select mask is a variable (n) bits long. It starts immediately after the positioning pattern
These bit positions can be regarded as don't care bit positions.
and can be terminated as required with the end of the command. All TagID lsb bits not defined are don't care.
0 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
1 0
cmd
cmd
cmd
cmd
0 0
1 0
0 1
0 1
0 1
0 0
0 0
0 0
cmd
1 0
0 0
cmd
cmd
cmd
0 [(0)
0 0
0 0
X X
X X
X X
0 1
0 0
1
0 0
1 [(0)
(1)
(1)
start addr
m
TagID[msb],TagID[msb-1]...TagID[msb-(n-1)]
m
TagID[msb],TagID[msb-1]..TagID[msb-(n-1)]
addr
addr
X X
X X
X X
CRC(TagID)
1] TagID(msb-m) ... TagID(msb-m-n)
Command
1] TagID(msb-m) ... TagID(msb-m-n)
fn (addr)
TagID
variable length (n) TagID Select pattern
variable length (n) TagID Select pattern
X X
X X
X X
fn (start addr,end addr)
partial_TagID
X X X X X X
partial_TagID
CRC_d
lock
0 L
fn (addr,lock,data)
end addr
31............0
data bits
CRC_d
CRC_d
(2)
(2)
fn (addr,data,(CRC_d))
addr,(CRC_d),data
SOF
SOF
SOF
SOF
SOF
SOF
SOF
SOF
fn (start addr,end
OK Response
Anticollision
Anticollision
Anticollision
Response
Response
Response
Data
Data
CRC_u
fn (TagID)
CRC_u
CRC_u
SOF
SOF
SOF
SOF
SOF
SOF
Error Response
None
None
None
None
None
Error code
Error code
Error code
Error code
Error code
Error code
pattern
pattern
pattern
pattern
pattern
pattern
dual
dual
dual
dual
dual
dual
ATA5558
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