參數(shù)資料
型號： RFHCS362AG
廠商： Microchip Technology Inc.
英文描述： Code Hopping Encoder with UHF ASK/FSK Transmitter
中文描述： 跳碼編碼器的超高頻ASK / FSK發(fā)射器
文件頁數(shù)： 23/60頁
文件大小： 502K
代理商： RFHCS362AG
2002 Microchip Technology Inc.
Preliminary
DS41189A-page 23
rfHCS362G/362F
TABLE 4-3:
CONFIG_1
4.5.5
GUARD
The Guard time between code words can be set to 0
ms, 6.4 ms, 25.6 ms and 76.8 ms. If during a series of
code words, the output changes from Hopping Code to
Seed the Guard time will increase by 3 x T
E
.
4.5.6
TIMOUT[0..1]
The transmission time-out can be set to 0.8 s, 3.2 s,
25.6 s or no time-out. After the time-out period, the
encoder will stop transmission and enter a low power
Shutdown mode.
4.5.7
DISC[0..9]
The discrimination bits are used to validate the
decrypted code word. The discrimination value is typi-
cally programmed with the 10 Least Significant bits of
the serial number or a fixed value.
4.5.8
OVR[0..1]
The
counter is at the core of generating the varying code.
Since the counter is limited to 16 bits, it overflows after
65536 increments, after which the code hopping
sequence repeats. In practice, this allows 20+ opera-
tions per day for ten years before repeating the
sequence. In addition, two overflow bits allow the
sequence to be extended further. The feature is
automatically
incrementing
synchronization
enabled by setting to logical “1” the two overflow bits
OVL0 and OVL1. The overflow bits form part of the
encrypted transmission, and therefore can be exam-
ined by receiver firmware. Table 4-4 shows how the
overflow bits act when they are set to one during initial
device configuration.
TABLE 4-4:
As can be seen from the table, the counter is effectively
extended by one bit, that is OVL0. In addition, OVL1
provides indication of the second counter overflow.
After the second overflow, OVL0 and OVL1 remain
zero, providing permanent evidence of the first and
second overflow events.
Bit
Address
Field
Description
Values
0
1
2
...
8
9
10
11
12
DISC_0
DISC_1
DISC_2
...
DISC_8
DISC_9
OVR_0
OVR_1
XSER
Discrimination bits
DISC
[
9:0
]
Overflow
OVR
[
1:0
]
Extended Serial Number
0
- Disable
1
- Enable
0
= Seed transmission on:
S[3210]
=
0001
(delay 1.6 s)
S[3210]
=
0101
(immediate)
13
SEEDC
Seed Control
1
= Seed transmission on:
S[3210]
=
0011
(delay 3.2 s)
S[3210]
=
1001
(immediate)
14
15
SEED_0
SEED_1
Seed options
00
- No Seed
01
- Limited Seed (Permanent and Delayed)
10
- Permanent and Delayed Seed
11
- Permanent Seed only
Sync. Counter
OVL0
OVL1
No overflow
0-FFFFH
First overflow
2nd 0-FFFFH
Second overflow
Third 0-FFFFH
Subsequent overflows
1
1
0
1
0
0
0
0
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
RFHCS362F 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:Code Hopping Encoder with UHF ASK/FSK Transmitter
RFHCS362F-I/SS 功能描述:編碼器、解碼器、復用器和解復用器 Code Hopping Encoder 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 安裝風格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Tray
RFHCS362FT-I/SS 功能描述:編碼器、解碼器、復用器和解復用器 Code Hopping Encoder 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 安裝風格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Tray
RFHCS362G 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:Code Hopping Encoder with UHF ASK/FSK Transmitter
RFHCS362G/362F 制造商:未知廠家 制造商全稱:未知廠家 功能描述:MCP23016 Datasheet
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