- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄371783 > HCS473-SLROM (Microchip Technology Inc.) Code Hopping Encoder and Transponder PDF資料下載
參數(shù)資料
| 型號： | HCS473-SLROM |
| 廠商： | Microchip Technology Inc. |
| 英文描述： | Code Hopping Encoder and Transponder |
| 中文描述： | 跳碼編碼器和轉(zhuǎn)發(fā)器 |
| 文件頁數(shù)： | 26/68頁 |
| 文件大?。?/td> | 1629K |
| 代理商： | HCS473-SLROM |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁當(dāng)前第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁
HCS473
DS40035C-page 24
Preliminary
2002 Microchip Technology Inc.
3.2.3.1
SELECT TRANSPONDER
The SELECT TRANSPONDER sequence must imme-
diately follow the HCS473 wake-up. A 12-bit Vehicle ID
(VID) follows the 3-bit command. The 4-bit Token ID
(TID) is sent by pulsing the field to identify which tran-
sponder should respond.
The HCS473 counts each time the field is pulsed (6
LF
TE
period), the first pulse setting the counter equal to
0. If the VID matched, the HCS473 will send an
Acknowledge when the TID matches the counter. Any
further TID pulses after the Acknowledge occurs will
deselect the device, putting it back to SLEEP - again
requires a wake-up sequence to communicate.
Any HCS473 that did not match both the presented VID
and TID will return to SLEEP, unselected, remaining
that way until the next wake-up pulse occurs.
The next command must begin T
TSCMD
after the
Acknowledge. If the LC input is high a point T
TSCMD
MIN
after the Acknowledge ends, the HCS473 will return to
SLEEP, unselected, assuming the transponder reader
is sending additional TID pulse(s) to select a different
device. A device of any TID value may therefore be
uniquely selected, regardless if a device with lower TID
has already acknowledged.
FIGURE 3-12:
TRANSPONDER SELECT SEQUENCE (RF RESPONSE EXAMPLE)
T
SF
ACK
CMD
VID
T
CMD
‘000
2
’
TID
T
TSCMD
12 bits
‘
‘
‘
L
Command
M
TID=0
b
b
12-Bit
VID
b
M
L
ACK
Transponder Select ACK
b
1-16
Pulses
CMD
‘XXX’
TID=1
TID=2
TID=3
5 LF
TE
6 LF
TE
b
b
b
T
TSCMD
Next
Command
Example for TID=’0011’
T
TSACK
WAKE ACK
Inductive In
(LC Pins)
RF Response
(DATA Pin)
T
CMD
T
CMD
16-bit Device Identifier = [ 12-bit Vehicle ID ] [ 4-bit Token ID ]
b
b
b
b
b
b
b
b
b
b
b
M
b
b
b
b
b
L
b
b
b
b
b
b
b
b
b
b
b
M
b
L
b
M
b
b
b
L
DID
TID
VID
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| HCS473-SLSQTP | Code Hopping Encoder and Transponder |
| HCS473IPQTP | Code Hopping Encoder and Transponder |
| HCS473IPROM | Code Hopping Encoder and Transponder |
| HCS473IPSQTP | Code Hopping Encoder and Transponder |
| HCS473ISLQTP | Code Hopping Encoder and Transponder |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HCS473SLSQTP | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:Code Hopping Encoder and Transponder |
| HCS473-SLSQTP | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:Code Hopping Encoder and Transponder |
| HCS473T/SL | 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 w/ Passive Entry RoHS:否 制造商:Micrel 產(chǎn)品:Multiplexers 邏輯系列:CMOS 位數(shù): 線路數(shù)量（輸入/輸出）:2 / 12 傳播延遲時間:350 ps, 400 ps 電源電壓-最大:2.625 V, 3.6 V 電源電壓-最小:2.375 V, 3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Tray |
| HCS473T-I/SL | 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 w/ Passive Entry RoHS:否 制造商:Micrel 產(chǎn)品:Multiplexers 邏輯系列:CMOS 位數(shù): 線路數(shù)量（輸入/輸出）:2 / 12 傳播延遲時間:350 ps, 400 ps 電源電壓-最大:2.625 V, 3.6 V 電源電壓-最小:2.375 V, 3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Tray |
| HCS4870C | 制造商:Power-One 功能描述:POWER SUPPLY |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。