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參數(shù)資料
| 型號： | HCS201 |
| 廠商： | Microchip Technology Inc. |
| 英文描述： | KEELOQ Code Hopping Encoder |
| 中文描述： | 而Keeloq跳碼編碼器 |
| 文件頁數(shù)： | 10/28頁 |
| 文件大?。?/td> | 383K |
| 代理商： | HCS201 |
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HCS201
DS41098C-page 10
2001 Microchip Technology Inc.
4.3
Synchronous Transmission Mode
Synchronous Transmission mode can be used to clock
the code word out using an external clock.
To enter Synchronous Transmission mode, the Pro-
gramming mode start-up sequence must be executed
as shown in Figure 4-3. If either S1 or S0 is set on the
falling edge of S2 (or S3), the device enters Synchro-
nous Transmission mode. In this mode, it functions as
a normal transmitter, with the exception that the timing
of the PWM data string is controlled externally and 16
extra bits are transmitted at the end with the code word.
The button code will be the S0, S1 value at the falling
edge of S2 or S3. The timing of the PWM data string is
controlled by supplying a clock on S2 or S3 and should
not exceed 20 kHz. The code word is the same as in
PWM mode with 16 reserved bits at the end of the
word. The reserved bits can be ignored. When in Syn-
chronous Transmission mode S2 or S3 should not be
toggled until all internal processing has been com-
pleted as shown in Figure 4-4.
FIGURE 4-3:
SYNCHRONOUS TRANSMISSION MODE (TXEN=0)
T
PS
T
PH
1 T
PH
2
t = 50ms
FIGURE 4-4:
CODE WORD ORGANIZATION (SYNCHRONOUS TRANSMISSION MODE)
“01,10,11”
PWM
S2
S[1:0]
Preamble
Header
Data
Reserved
(16 bits)
Padding
(2 bits)
Button
Status
S2 S1 S0 S3
Serial Number
(28 bits)
Button
Status
S2 S1 S0 S3
DISC
(12 bits)
Sync Counter
(16 bits)
82 Data bits
Transmitted
LSb first.
LSb
MSb
Fixed Portion
Encrypted Portion
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|---|---|
| HCS2-01 | 制造商:Richco 功能描述:HINGED CABLE SADDLE,NAT,16MM CBL |
| HCS201/P | 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 3.5-13V 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 |
| HCS201/SN | 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 3.5-13V 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 |
| HCS201_11 | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:KEELOQ? Code Hopping Encoder 34-bit fixed code (28-bit serial number |
| HCS201-I/P | 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 3.5-13V 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 |
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