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參數(shù)資料
| 型號： | LRI64 |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | Memory TAG IC, 64-bit Unique ID with WORM User Area 13.56MHz, ISO 15693 Standard Compliant |
| 中文描述： | 內(nèi)存標(biāo)簽IC，64位唯一ID與WORM的用戶區(qū)13.56，ISO 15693標(biāo)準(zhǔn)兼容 |
| 文件頁數(shù)： | 17/38頁 |
| 文件大小： | 515K |
| 代理商： | LRI64 |
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LRI64
ANTI-COLLISION
The purpose of the anti-collision sequence is to al-
low the VCD to compile a list of the LRI64 devices
that are present in the VCD field, each one identi-
fied by its unique ID (UID).
The VCD is the master of the communication with
one or multiple LRI64 devices. It initiates the com-
munication by issuing the Inventory Request
(
Figure 22.
).
Request Flags
The Nb_slots_flag needs to be set appropriately.
The AFI Flag needs to be set, if the Optional AFI
Field is to be present.
Mask Length and Mask Value
The Mask Length defines the number of significant
bits in the Mask Value.
The Mask Value is contained in an integer number
of bytes.
The least significant bit of each is transmitted first.
If the Mask Length is not a multiple of 8 (bits), the
most significant end of the Mask Value is padded
with the required number of null bits (set to 0) so
that the Mask Value is contained in an integer
number of bytes, so that the next field (the 2-Byte
CRC) starts at the next byte boundary.
In the example of
Figure 20.
, the Mask Length is
11 bits. The Mask Value, 10011001111, is padded
out at the most significant end with five bits set to
0. The 11 bits Mask plus the current slot number is
compared to the UID.
Inventory Responses
Each LRI64 sends its Response in a given time
slot, or else remains silent.
The first slot starts immediately after the reception
of the Request EOF.
To switch to the next slot, the VCD sends another
EOF.
The following rules and restrictions apply:
–
if no LRI64 answer is detected, the VCD may
switch to the next slot by sending an EOF
–
if one or more LRI64 answers are detected,
the VCD waits until the complete frame has
been received before sending an EOF, to
switch to the next slot.
The pulse shall be generated according to the def-
inition of the EOF in ISO/IEC 15693-2.
Figure 20. Comparison between the Mask, Slot Number and UID
AI06682
Mask value received in the Inventory command
0000 0100 1100 1111b16 bits
The Mask value less the padding 0s is loaded
into the Tag comparator
100 1100 1111b11 bits
The Slot counter is calculated
Nb_slots_flags = 0 (16 slots), Slot Counter is 4 bits
xxxx
The Slot counter is concatened to the Mask value
Nb_slots_flags = 0
xxxx 100 1100 1111b
15 bits
The concatenated result is compared with
the least significant bits of the Tag UID.
xxxx xxxx ..... xxxx xxxx x xxx xxxx xxxx xxxx
64 bits
LSB
MSB
b
LSB
MSB
LSB
MSB
LSB
MSB
b0
b63
Compare
Bits ignored
UID
4 bits
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| LRI64-A1S | Memory TAG IC, 64-bit Unique ID with WORM User Area 13.56MHz, ISO 15693 Standard Compliant |
| LRI64-A1T | CONN HOUSING 2MM 18POS POLARIZED |
| LRI64-A7T | Memory TAG IC, 64-bit Unique ID with WORM User Area 13.56MHz, ISO 15693 Standard Compliant |
| LRI64-SBN18 | Memory TAG IC, 64-bit Unique ID with WORM User Area 13.56MHz, ISO 15693 Standard Compliant |
| LRI64-A6S2U | Memory TAG IC, 64-bit Unique ID with WORM User Area 13.56MHz, ISO 15693 Standard Compliant |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LRI64_07 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Memory TAG IC at 13.56 MHz, with 64-bit Unique ID and WORM user area, ISO15693 and ISO18000-3 Mode 1 compliant |
| LRI64_08 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Memory tag IC at 13.56 MHz, with 64-bit unique ID and WORM user area, ISO 15693 and ISO 18000-3 Mode 1 compliant |
| LRI64-A1S | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Memory TAG IC, 64-bit Unique ID with WORM User Area 13.56MHz, ISO 15693 Standard Compliant |
| LRI64-A1S/1GE | 功能描述:電可擦除可編程只讀存儲器 TAG IC 13.56 MHz W/ 64-bit Unique ID RoHS:否 制造商:Atmel 存儲容量:2 Kbit 組織:256 B x 8 數(shù)據(jù)保留:100 yr 最大時鐘頻率:1000 KHz 最大工作電流:6 uA 工作電源電壓:1.7 V to 5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 |
| LRI64-A1S/XXX | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Memory TAG IC, 64-bit Unique ID with WORM User Area 13.56MHz, ISO15693 and ISO18000-3 Mode 1 Compliant |
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