Holtek Semiconductor Inc HT600, HT6207, HT680 Datasheet
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
·
Applications
Burglar alarm system
·
Smoke and fire alarm system
·
Garage door controllers
·
Car door controllers
·
General Description
The 318encoders 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 otherwise set floating internally. Various packages of
18
the 3
encoders offer flexible combinations of
HT600/680/6207
18
3
Series of Encoders
Easy interface with an RF or infrared trans
·
mission media
Minimal external components
·
Package information: refer to Selection
·
Table
Car alarm system
·
Security system
·
Cordless telephones
·
Other remote control systems
·
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 application flexibility of the 3
18
series of encoders.
-
-
-
Selection Table
Function
Part No.
HT600 9 5 0 4 RC oscillator TE 20 DIP/SOP
HT680 8 4 0 6 RC oscillator TE 18 DIP/SOP
HT6207 10 0 4 4 RC oscillator D12~D15 20 DIP/SOP
Note: Address/Data represents addressable pins or data according to the decoder requirements.
Address
No.
Address/
Data No.
Data
No.
Dummy
Code No.
Oscillator Trigger Package
1 April 24, 2000
Block Diagram
TE trigger
HT600/HT680
OSC2
HT600/680/6207
OSC1
TE
A0
Transm ission
A9
AD10
DATA trigger
HT6207
OSC2
A0
Transm ission
A11
O scillator
18
G a te C irc u it
AD17
OSC1
O scillator
18
G a te C irc u it
33 D ivider
¸
18 C ounter
¸
& 1 of 18
D ecoder
Trinary
Detector
33 D ivider
¸
18 C ounter
¸
& 1 of 18
D ecoder
Trinary
Detector
D ata S elect
& Buffer
Sync.
Circuit
VDD VSS
D ata S elect
& Buffer
Sync.
Circuit
LED C ircuit
DOUT
DOUT
LED
D12
D17
VDD VSS
Note: The address/data pins are available in various combinations.
2 April 24, 2000
Pin Assignment
HT600/680/6207
TE trigger type
9-Address
5 -A d d re s s /D a ta
1
AD11
2
AD12
3
AD13
4
AD14
5
AD15
DOUT
OSC2
OSC1
TE
VSS
6
7
8
9
10
HT600
20 D IP /S O P
8-Address
4-A ddress/D ata
VDD
20
19
A9
18
A8
17
A7
16
A6
A4
15
A3
14
A2
13
A1
12
11
A0
DOUT
OSC2
OSC1
AD11
AD12
AD14
AD15
TE
VSS
1
2
3
4
5
6
7
8
9
VDD
18
A9
17
16
A8
15
A7
14
A6
A3
13
A2
12
A1
11
A0
10
HT680
18 D IP /S O P
DATA trigger type
10-A ddress
4 -D a ta
A11
1
2
D12
3
D13
4
D14
5
D15
DOUT
LED
OSC2
OSC1
VSS
6
7
8
9
10
H T6207
20 DIP/SO P
20
VDD
19
A9
18
A8
17
A7
16
A6
A4
15
A3
14
A2
13
12
A1
11
A0
Pin Description
Pin Name I/O
A0~A11 I
AD10~AD17 I
D12~D15 I
DOUT O CMOS OUT Encoder data serial transmission output
LED O NMOS OUT LED transmission enable indicator
TE I
OSC1 I OSCILLATOR Oscillator input pin
OSC2 O OSCILLATOR Oscillator output pin
VSS
VDD
¾¾
¾¾
Internal
Connection
TRANSMISSION
GATE
TRANSMISSION
GATE
CMOS IN
Pull-low
CMOS IN
Pull-low
Description
Input pins for address A0~A11 setting
They can be externally set to VDD, VSS, or left open.
Input pins for address/data (AD10~AD17) setting
They can be externally set to VDD, VSS, or left open.
Input pins for data (D12~D15) setting and transmission
enable (active high)
They an be externally set to VDD or left open (see Note).
Transmission enable, active high (see Note).
Negative power supply, ground
Positive power supply
Note: D12~D15 are data input and transmission enable pins of the HT6207.
TE is the transmission enable pin of the HT600/HT680.
3 April 24, 2000
Approximate internal connections
HT600/680/6207
TRANSM ISSION
GATE
OSCILLATOR
EN
OSC1
CMOS IN
Pull-low
OSC2
CMOS O UT
NMOS O UT
Absolute Maximum Ratings
Supply Voltage ...............................-0.3V to 13V
Input Voltage....................V
-0.3 to VDD+0.3V
SS
Note: These are stress ratings only. Stresses exceeding the range specified under ²Absolute Maxi-
mum Ratings² may cause substantial damage to the device. Functional operation of this device at other conditions beyond those listed in the specification is not implied and prolonged
exposure to extreme conditions may affect device reliability.
Storage Temperature.................-50°Cto125°C
Operating Temperature ..............-20°Cto75°C
4 April 24, 2000
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