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參數(shù)資料
| 型號(hào)： | HT6230 |
| 廠商： | Holtek Semiconductor Inc. |
| 英文描述： | RES THICK FILM 100K OHM 1 W 7KV |
| 中文描述： | 紅外遙控編碼器 |
| 文件頁(yè)數(shù)： | 6/8頁(yè) |
| 文件大小： | 135K |
| 代理商： | HT6230 |
HT6230
6
April 19, 2000
logic 1. If the sense input comes from XIN, the
corresponding command code together with
the system code stored in the system latches
are generated.
Two-key system mode
The device goes into this mode by switching
the MS input pin to high state. The pull-high
resistors are only connected to XIN inputs ex-
ceptthefirstscancycle.Inthefirstscancycle,
there only exists pull-high resistors in ZIN in-
puts. In this mode, the legal key operation is
that exactly one XIN and one ZIN are con-
nected to two DRS drivers. In the first scan
duration, it detects which key in Z-key matrix
is pressed and generates an enable signal to
latch the system latches. While in the second
scan duration, it detects which key in the
X-key matrix is pressed and generates an en-
abledsignaltolatchthecommandlatches.Af-
ter being latched, the system and command
codes are transmitted.
Control bit
A control bit is added after two start bits and
willbecomplementedifonekeyisreleased.The
decoder can decide whether the next code is a
new command or not.
Oscillator
The embedded part of the oscillator is an
RC-oscillation circuit. The OSC pin is the input
terminal of the RC-oscillation circuit and is con-
nectedtoanexternalceramicresonator(429kHz).
A resistor of 6.8k
must be in series with the
resonator. The resonator and resistor are
grounded at one side.
Reset (after key release)
In a complete code repetition time, as shown in
the figure below, the following situation of key
release results in a reset action.
During Tsep and debounce time, the device
will reset immediately if a key is released.
During Scan cycle in Tcode, a reset will occur
ifakeyisreleasedinthreecasesdescribedbe-
low:
When one of the key scan drivers is in the
low state
Before that key has been detected
When MS is high and there is no wired con-
nection in Z-key matrix
Test pins (TT1 and TT2)
TherearefourmodesbythecombinationofTT1
and TT2.
TT1
TT2
Mode
0
0
Normal mode
1
1
Reset
1
0
Test mode 1
0
1
Test mode 2
+
'
# +
: *
'
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| HT6240-002 | RES THICK FILM 100 OHM 1 W 7KV |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
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| HT6240 | 制造商:HOLTEK 制造商全稱(chēng):Holtek Semiconductor Inc 功能描述:Infrared Remote Encoder |
| HT6240_02 | 制造商:HOLTEK 制造商全稱(chēng):Holtek Semiconductor Inc 功能描述:Infrared Remote Encoder |
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| HT6240-001(20SOIC) | 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:Remote-Control Transmitter/Encoder |
| HT6240-001(24SOIC) | 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:Remote-Control Transmitter/Encoder |
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