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參數(shù)資料
| 型號(hào)： | HCS412P |
| 廠商： | Microchip Technology Inc. |
| 英文描述： | KEELOQ Code Hopping Encoder and Transponder |
| 中文描述： | 而Keeloq跳碼編碼器和轉(zhuǎn)發(fā)器 |
| 文件頁(yè)數(shù)： | 28/44頁(yè) |
| 文件大小： | 704K |
| 代理商： | HCS412P |
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HCS412
DS41099C-page 28
Preliminary
2002 Microchip Technology Inc.
4.4.2
ANTICOLLISION AND RF ECHO
(LFSP = 11)
In addition to enabling anticollision, this mode adds that
all HCS412 responses and Acknowledges are echoed
on the DATA output line. Responses are first transmit-
ted on the DATA line, followed by the equivalent data
transmitted on the LF LC lines (Figure 4-16,
Figure 4-17).
LF communication from the token to the transponder
reader has much less range than LF communication
from the reader to the token. Transmitting the informa-
tion on the DATA line increases communication range
by enabling longer range RF talk back.
The information is sent on the DATA line first to benefit
longer range passive-entry authentication times.
FIGURE 4-16: RF ECHO OPTION AND READ COMMAND
FIGURE 4-17: RF ECHO OPTION AND IFF COMMAND
FIGURE 4-18: RF ECHO OPTION AND REQUEST HOPPING CODE COMMAND
DATA (RF)
C
(
R
(
P
H
N
F
(
R
(
ACK
T
PU
T
ATO
LF Communication from reader to HCS412
LF Communication from HCS412 to reader
T
OTH
Inductive
(LF)
32-Bit Response
16-Bit
Response
16-Bit
Response
L
M
L
M
O
(
R
(
P
H
N
F
(
R
(
LF Communication from reader to HCS412
LF Communication from HCS412 to reader
DATA (RF)
Inductive (LF)
L
M
L
M
P
H
F
(
H
(
LF Communication from reader to HCS412
LF Communication from HCS412 to reader
DATA (RF)
L
M
L
M
Field
ACK
32-Bit PPM
Response
Next
Field
Ack
T
OTH
T
ATO
Request Hopping
Code Opcode
Inductive
(LF)
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| HCS412SN | KEELOQ Code Hopping Encoder and Transponder |
| HCS412T | KEELOQ Code Hopping Encoder and Transponder |
| HCS412TI | KEELOQ Code Hopping Encoder and Transponder |
| HCS412TP | Dual PCI 2.2 Hot-Swap Controllers |
| HCS412 | Code Hopping Encoder and Transponder(編碼器和收發(fā)兩用機(jī)) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HCS412SN | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:KEELOQ Code Hopping Encoder and Transponder |
| HCS412T | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:KEELOQ Code Hopping Encoder and Transponder |
| HCS412T/SN | 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(shí)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 |
| HCS412TI | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:KEELOQ Code Hopping Encoder and Transponder |
| HCS412T-I/SN | 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(shí)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 |
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