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參數(shù)資料
| 型號： | LRI512-C40 |
| 廠商： | 意法半導(dǎo)體 |
| 元件分類： | DRAM |
| 英文描述： | EEPROM |
| 中文描述： | EEPROM的 |
| 文件頁數(shù)： | 3/54頁 |
| 文件大?。?/td> | 351K |
| 代理商： | LRI512-C40 |
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LRI512
Commands
The LRI512 supports the following commands:
–
INVENTORY
: used to perform the anti-collision
sequence.
–
STAY QUIET:
to put the LRI512 in quiet mode.
The LRI512 is then deselected and does not re-
spond to any command.
–
SELECT:
used to select the LRI512. After this
command, the LRI512 processes all READ/
WRITE commands with the Select_Flag set.
–
RESET TO READY:
to put the LRI512 in the
ready state.
–
READ BLOCK:
to output the 32 bits of the se-
lected block and its locking status.
–
WRITE BLOCK:
to write the 32-bit value in the
selected block, provided that it is not locked.
–
LOCK BLOCK:
to lock the selected block. After
this command, the block cannot be modified.
–
WRITE AFI:
to write the 8-bit value in the AFI
register, provided that it is not locked.
–
LOCK AFI:
to lock the AFI register.
–
ACTIVATE EAS:
to set the non volatile EAS bit.
When the EAS bit is set, the LRI512 answers to
the POOL EAS command.
–
DEACTIVATE EAS:
to reset the non volatile
EAS bit, so that the LRI512 no longer answers
to the POOL EAS command.
–
POOL EAS
: used to request all LRI512s in the
Reader field to generate the EAS signal, provid-
ed that their EAS bit is set.
Initial Dialogue for Vicinity Cards
The dialogue between the Vicinity Coupling De-
vice (VCD) and the Vicinity Integrated Circuit Card
(LRI512) is conducted through the following con-
secutive operations:
– activation of the LRI512 by the RF operating
field of the VCD.
– transmission of a command by the VCD.
– transmission of a response by the LRI512.
These operations use the RF power transfer and
communication signal interface specified in the fol-
lowing paragraphs. This technique is called Read-
er Talk First (RTF).
Power Transfer
Power transfer to the LRI512 is accomplished by
radio frequency at 13.56 MHz via coupling anten-
nas in the LRI512 and in the VCD. The RF operat-
ing field of the VCD is transformed on the LRI512
antenna as an AC voltage which is re-dressed, fil-
tered and internally regulated. The amplitude
modulation (ASK) on this received signal is de-
modulated by the ASK demodulator.
Frequency
The ISO15693 standard defines the carrier fre-
quency (
f
c
) of the operating field to be
13.56 MHz ± 7 kHz.
Operating Field
The LRI512 operates continuously between H
min
and H
max
.
– The minimum operating field is H
min
and has a
value of 150 mA/m rms.
– The maximum operating field is H
max
and has a
value of 5 A/m rms.
A VCD shall generate a field of at least H
min
and
not exceeding H
max
in the operating volume.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LRI64 | 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 |
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| 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 |
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