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參數(shù)資料
| 型號(hào)： | HCS370TISL |
| 廠(chǎng)商： | Microchip Technology Inc. |
| 英文描述： | KEELOQ Code Hopping Encoder |
| 中文描述： | 而Keeloq跳碼編碼器 |
| 文件頁(yè)數(shù)： | 15/36頁(yè) |
| 文件大?。?/td> | 518K |
| 代理商： | HCS370TISL |
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2002 Microchip Technology Inc.
Preliminary
DS41111D-page 15
HCS370
FIGURE 4-3:
VARIABLE PULSE WIDTH MODULATION (VPWM)
FIGURE 4-4:
PULSE POSITION MODULATION (PPM)
In addition to the Modulation Format, Guard Time, and
Baud Rate, the following options are also available to
change the transmission format:
If the START/STOP Pulse Enable (STEN) config-
uration option is enabled, the HCS370 will place a
leading and trailing ‘1’ on each code word. This is
necessary for modulation formats such as
Manchester and PPM to interpret the first and last
data bit.
A wake-up sequence can be transmitted before
the transmission starts. The wake-up sequence is
configured with the Wake-up (WAKE) configura-
tion option and can be disabled or set to 50 ms,
75 ms, or 100 ms of pulses as indicated in
Figure 4-5.
The WAKE option is the same for both Encoder 1
and Encoder 2.
FIGURE 4-5:
WAKE-UP ENABLE
VPWM BIT ENCODING:
T
BP
on Transition Low to High
T
BP
2
X
T
E
LOGIC “0”
T
E
T
BP
LOGIC “1”
T
E
T
E
on Transition High to Low
T
BP
2
X
T
E
T
E
Guard
Time
10xT
E
Header
Encrypted Portion
Fixed Code Portion
31xT
E
50% Preamble
1
2
16
T
E
LOGIC “0”
LOGIC “1”
LOGIC "1"
LOGIC "0"
T
E
T
E
T
E
Guard
Time
Fixed Code Portion
Encrypted Portion
T
BP
3
X
TE
T
BP
31xT
E
50% Preamble
START bit
STOP bit
10xT
E
Header
1
2
16
WAKE-UP = 75 ms
WAKE-UP = 50 ms
WAKE-UP = 100 ms
WAKE-UP
Guard Time = 6.4 ms, 51.2 ms, or 102.4 ms
CODE
CODE
T
E
T
E
T
E
2T
E
T
E
5T
E
T
G
T
G
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| HCS370TIST | KEELOQ Code Hopping Encoder |
| HCS370TP | KEELOQ Code Hopping Encoder |
| HCS370TSL | KEELOQ Code Hopping Encoder |
| HCS370TST | KEELOQ Code Hopping Encoder |
| HCS374HMSR | Radiation Hardened Octal D-Type Flip-Flop, Three-State, Positive Edge Triggered |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HCS370TIST | 制造商:MICROCHIP 制造商全稱(chēng):Microchip Technology 功能描述:KEELOQ Code Hopping Encoder |
| HCS370TP | 制造商:MICROCHIP 制造商全稱(chēng):Microchip Technology 功能描述:KEELOQ Code Hopping Encoder |
| HCS370TSL | 制造商:MICROCHIP 制造商全稱(chēng):Microchip Technology 功能描述:KEELOQ Code Hopping Encoder |
| HCS370TST | 制造商:MICROCHIP 制造商全稱(chēng):Microchip Technology 功能描述:KEELOQ Code Hopping Encoder |
| HCS373DMSR | 制造商:未知廠(chǎng)家 制造商全稱(chēng):未知廠(chǎng)家 功能描述:8-Bit D-Type Latch |
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