|
|
PDF HT640 Data sheet ( Hoja de datos )
| Número de pieza | HT640 | |
| Descripción | 3(18) Series of Encoders | |
| Fabricantes | Holtek Semiconductor Inc | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de HT640 (archivo pdf) en la parte inferior de esta página. Total 12 Páginas | ||
|
No Preview Available !
318 Series of Encoders
Features
· Operating voltage: 2.4V~12V
· Low power and high noise immunity CMOS
technology
· Low standby current
· Three words transmission
· Built-in oscillator needs only 5% resistor
· Easy interface with an RF or infrared trans-
mission media
· Minimal external components
Applications
· Burglar alarm system
· Smoke and fire alarm system
· Garage door controllers
· Car door controllers
· Car alarm system
· Security system
· Cordless telephones
· Other remote control systems
General Description
The 318 encoders are a series of CMOS LSIs for
remote control system applications. They are
capable of encoding 18 bits of information
which consists of N address bits and 18-N data
bits. Each address/data input is externally
trinary programmable if bonded out. It is other-
wise set floating internally. Various packages of
the 318 encoders offer flexible combinations of
programmable address/data to meet various
application needs. The programmable ad-
dress/data is transmitted together with the
header bits via an RF or an infrared transmis-
sion medium upon receipt of a trigger signal.
The capability to select a TE trigger type or a
DATA trigger type further enhances the appli-
cation flexibility of the 318 series of encoders.
Selection Table
Function
Part No.
HT600
HT640
HT680
HT6187
HT6207
HT6247
Address
No.
9
10
8
9
10
12
Address/
Data No.
5
8
4
0
0
0
Data Dummy
No. Code No.
Oscillator
Trigger
Package
0
4 RC oscillator
TE 20 DIP/20 SOP
0
0 RC oscillator
TE 24 SOP/24 SDIP
0
6 RC oscillator
TE 18 DIP
3 6 RC oscillator D12,D14,D15 18 DIP/20 SOP
4 4 RC oscillator D12~D15 20 DIP/20 SOP
6 0 RC oscillator D12~D17 24 SOP/24 SDIP
Note: Address/Data represents addressable pins or data according to the decoder requirements.
1 July 8, 1999
1 page  
318 Series of Encoders
Symbol
Parameter
VIH
VIL
fOSC
RTE
RDATA
²H² Input Voltage
²L² Input Voltage
Oscillator Frequency
TE Pull-low Resistance
D12~D17 Pull-low
Resistance
Test Conditions
VDD
¾
Conditions
¾
¾¾
10V ROSC=330kW
5V VTE=5V
5V VDATA=5V
Min. Typ. Max. Unit
0.8VDD ¾
VDD
V
0 ¾ 0.2VDD V
¾ 100 ¾ kHz
¾ 1.5 3 MW
¾ 1.5 3 MW
Functional Description
Operation
The 318 series of encoders begins a three-word transmission cycle upon receipt of a transmission en-
able (TE for the HT600/HT640/HT680 or D12~D17 for the HT6187/HT6207/HT6247, active high).
This cycle will repeat itself as long as the transmission enable (TE or D12~D17) is held high. Once
the transmission enable falls low, the encoder output completes its final cycle and then stops as
shown below.
TE or
D 12~D 17
E ncoder
D a ta O u t
< 1 w o rd
3 w o rd s
T r a n s m itte d
C o n tin u o u s ly
Transmission timing
3 w o rd s
Information word
An information word consists of 4 periods as shown:
P ilo t p e r io d
( 6 b its )
1 /6 b it
S y n c . p e r io d
A d d r e s s c o d e p e r io d
Composition of information
D a ta c o d e p e r io d
5 July 8, 1999
5 Page 
318 Series of Encoders
T r a n s m itte r C ir c u it
VDD
T r a n s m itte r C ir c u it
1
2
3
4
5
6
7
8
9
10
R osc 11
12
A D 11
A D 12
A D 13
A D 14
A D 15
A D 16
A D 17
DOUT
TE
O SC2
O SC1
VSS
V D D 24
A 10 23
A 9 22
A 8 21
A 7 20
A 6 19
A 5 18
A 4 17
A 3 16
A 2 15
A 1 14
A 0 13
H T640
1
2
3
4
5
6
7
8
1kW 9
10
R osc 11
12
A 11
D 12
D 13
D 14
D 15
D 16
D 17
DOUT
LE D
O SC2
O SC1
VSS
V D D 24
A 10 23
A 9 22
A 8 21
A 7 20
A 6 19
A 5 18
17
A4
A 3 16
A 2 15
A 1 14
A 0 13
H T6247
Notes: Typical infrared diode: EL-1L2 (KODENSHI CORP.)
Typical RF transmitter: JR-220 (JUWA CORP.)
TX-99 (MING MICROSYSTEM, U.S.A.)
VDD
11 July 8, 1999
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet HT640.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| HT640 | 3(18) Series of Encoders | Holtek Semiconductor Inc |
| HT644L | 318 Series of Decoders | Holtek Semiconductor Inc |
| HT646L | 318 Series of Decoders | Holtek Semiconductor Inc |
| HT648L | 318 Series of Decoders | Holtek Semiconductor Inc |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |