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PDF HT6P20F2 Data sheet ( Hoja de datos )
| Número de pieza | HT6P20F2 | |
| Descripción | Remote Control Encoder | |
| Fabricantes | Holtek Semiconductor | |
| Logotipo |  |
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DataSheet.in
HT6P20B2/D2/F2
Remote Control Encoder
Features
●● Operating voltage: 2~12V
●● Low power consumption
●● Up to 5 data pins
●● Up to 222 address codes
●● Fully Integrated Oscillator
●● Easy interfacing to RF medium
●● CMOS technology
●● High noise immunity
●● 8-Pin SOP package
Application
●● Burglar alarm systems
●● Smoke and fire alarm systems
●● Personal alarm systems
●● Car/Garage door controllers
●● Home/office/car security systems
●● Cordless telephones
●● Other remote control systems
General Description
The HT6P20X2 series of devices are signal encoders designed for remote control system
applications. The devices are capable of encoding 24 bits of information and then serially
transmitting the data on their output pin. A signal transmission is automatically activated when
any of the data input lines change from high to low. The device generates a signal on its output pin
which is composed of a pilot signal, address codes, data codes and an end code. This can be sent
to RF transmitter circuits for wireless transmission. Various configurations of address and data bits
can be chosen according to which device is selected. As all functions are integrated into the device,
the simple addition of switches and RF module is that is required to implement a full RF encoder
function. All devices are supplied in 8-pin SOP packages.
Selection Table
The devices encodes 24-bits of information however the address/data combination is selected
according to which part number is selected.
Part Number
HT6P20B2
HT6P20D2
HT6P20F2
Address
22
20
19
Data
2
4
5
Rev 1.00
1 June 23, 2010
1 page  
DataSheet.in
HT6P20B2/D2/F2
Remote Control Encoder
Pilot Code
Each transmission has a pilot code preceding the address and data codes. This is to alert the decoder
that address and data bits are about to be transmitted. The pilot code waveform is composed of a low
pulse of 23λ duration followed by a high pulse of 1λ duration. Note that a 1λtime unit is equal to 32
internal oscillator time periods.
The pilot code is initiated when any of the data input pins change from high to low. Note that the
duration of the data input low signals must be greater than the pilot code length for a full signal
transmission to occur. If the input low signal is less than the pilot code length then only the pilot
code signal will be transmitted and no address, data or end code will be transmitted.
23λ 1λ
Address/Data Bit Waveform
As address/data bits can be designated as either ”0” or “1” they must be encoded in a certain way.
One bit consists of one pulse cycle and each pulse cycle has a duration of 96 internal oscillator
periods.
tDW
Bit“0”
1λ
2λ
Bit“1”
1λ
Address/
Data bit
2λ
Note: ● 1λ = 32 internal oscillator time periods.●
● Bit “0” consists of a “low” pulse for 1λ then a “high” pulse for 2λ.●
● Bit “1” consists of a “low” pulse for 2λ then a “high” pulse for 1λ.
End code Waveform
The end code is located after the address/data and consists of 4 bits of data with the bit pattern 0101
as shown below
Rev 1.00
Bit”0"
MSB
Bit”1"
Bit”0"
End●code●(0-1-0-1)
Bit”1"
LSB
5 June 23, 2010
5 Page 
DataSheet.in
HT6P20B2/D2/F2
Remote Control Encoder
Carrier Tape Dimensions
D P0
E
F
D1 P
P1 t
W C B0
K0
A0
R e e l H o le
IC p a c k a g e p in 1 a n d th e r e e l h o le s
a r e lo c a te d o n th e s a m e s id e .
●● SOP 8N
Symbol
W
P
E
F
D
D1
P0
P1
A0
B0
K0
t
C
Description
Carrier Tape Width
Cavity Pitch
Perforation Position
Cavity to Perforation (Width Direction)
Perforation Diameter
Cavity Hole Diameter
Perforation Pitch
Cavity to Perforation (Length Direction)
Cavity Length
Cavity Width
Cavity Depth
Carrier Tape Thickness
Cover Tape Width
Dimensions in mm
12.0+0.3/-0.1
8.0±0.1
1.75±0.1
5.5±0.1
1.55±0.1
1.50+0.25/-0.00
4.0±0.1
2.0±0.1
6.4±0.1
5.2±0.1
2.1±0.1
0.30±0.05
9.3±0.1
Rev 1.00
11 June 23, 2010
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet HT6P20F2.PDF ] | |
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