HOLTEK HT680

HT600/HT680/HT6207
318 Series of Encoders
Features
· Operating voltage: 2.4V~12V
· Easy interface with an RF or infrared transmission
media
· Low power and high noise immunity CMOS
· Minimal external components
technology
· Low standby current
· Pair with Holtek¢s 318 series of decoders
· Three words transmission
· HT600/HT6207: 20-pin DIP/SOP package
· Built-in oscillator needs only 5% resistor
HT680: 18-pin DIP/SOP package
Applications
· Burglar alarm system
· Car alarm system
· Smoke and fire alarm system
· Security system
· Garage door controllers
· Cordless telephones
· Car door controllers
· 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 otherwise set floating internally. Various packages of the 318
encoders offer flexible combinations of programmable
address/data to meet various application needs. The
programmable address/data is transmitted together
with the header bits via an RF or an infrared transmission 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 318 series of encoders.
Selection Table
Function Address
No.
Address/
Data No.
Data
No.
Dummy
Code No.
Oscillator
Trigger
9
5
0
4
RC oscillator
TE
HT680
8
4
0
6
RC oscillator
TE
18DIP/SOP
HT6207
10
0
4
4
RC oscillator
D12~D15
20DIP/SOP
Part No.
HT600
Note:
Package
20DIP/SOP
Address/Data represents pins that can be either address or data according to the application requirement.
Rev. 1.10
1
January 24, 2003
HT600/HT680/HT6207
Block Diagram
TE Trigger
HT600/HT680
O S C 2
O S C 1
O s c illa to r
¸ 3 3 D iv id e r
D a ta S e le c t
& B u ffe r
D O U T
T E
¸ 1 8 C o u n te r
& 1 o f 1 8
D e c o d e r
A 0
1 8
T r a n s m is s io n
G a te C ir c u it
T r in a r y
D e te c to r
A 9
A D 1 7
A D 1 0
S y n c .
C ir c u it
V D D
V S S
DATA Trigger
HT6207
O S C 1
O S C 2
O s c illa to r
¸ 3 3 D iv id e r
¸ 1 8 C o u n te r
& 1 o f 1 8
D e c o d e r
A 0
1 8
T r a n s m is s io n
G a te C ir c u it
T r in a r y
D e te c to r
A 1 1
D 1 7
D 1 2
Note:
D a ta S e le c t
& B u ffe r
D O U T
S y n c .
C ir c u it
L E D
C ir c u it
V D D
V S S
L E D
The address/data pins are available in various combinations.
Pin Assignment
T E tr ig g e r ty p e
D A T A
9 -A d d re s s
5 -A d d r e s s /D a ta
8 -A d d re s s
4 -A d d r e s s /D a ta
A D 1 1
1
2 0
V D D
A D 1 2
2
1 9
A 9
A D 1 3
A D 1 4
3
1 8
A 8
4
1 7
A 7
A D 1 5
5
1 6
A 6
D O U T
T E
6
1 5
7
O S C 2
O S C 1
V S S
1 0 -A d d re s s
4 -D a ta
A 1 1
1
2 0
V D D
D 1 2
D 1 3
2
1 9
A 9
1 7
V D D
A 9
3
1 8
A 8
1 6
A 8
D 1 4
4
1 7
A 7
4
1 5
A 7
5
1 6
A 6
D O U T
5
1 4
A 6
D 1 5
D O U T
6
1 5
A 4
T E
6
1 3
A 3
L E D
1 4
A 3
7
1 2
A 2
O S C 2
1 3
A 2
A 1
O S C 2
O S C 1
8
7
8
1 1
A 1
O S C 1
9
1 2
A 1
A 0
V S S
9
1 0
A 0
V S S
1 0
1 1
A 0
A D 1 1
A D 1 2
1
1 8
2
A D 1 4
A D 1 5
3
1 4
A 4
A 3
8
1 3
A 2
9
1 2
1 0
1 1
H T 6 0 0
2 0 D IP -A /S O P -A
Rev. 1.10
tr ig g e r ty p e
H T 6 8 0
1 8 D IP -A /S O P -A
H T 6 2 0 7
2 0 D IP -A /S O P -A
2
January 24, 2003
HT600/HT680/HT6207
Pin Description
Pin Name
I/O
Internal
Connection
Description
A0~A11
I
TRANSMISSION Input pins for address A0~A11 setting
GATE
They can be externally set to VDD, VSS, or left open.
AD10~AD17
I
TRANSMISSION Input pins for address/data (AD10~AD17) setting
GATE
They can be externally set to VDD, VSS, or left open.
D12~D15
I
CMOS IN
Pull-low
DOUT
O
CMOS OUT
Encoder data serial transmission output
LED
O
NMOS OUT
LED transmission enable indicator
TE
I
CMOS IN
Pull-low
OSC1
I
OSCILLATOR
Oscillator input pin
OSC2
O
OSCILLATOR
Oscillator output pin
VSS
¾
¾
Negative power supply, ground
VDD
¾
¾
Positive power supply
Note:
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).
D12~D15 are data input and transmission enable pins of the HT6207.
TE is the transmission enable pin of the HT600/HT680.
Approximate Internal Connections
T R A N S M IS S IO N
G A T E
C M O S IN
P u ll- lo w
C M O S O U T
N M O S O U T
O S C IL L A T O R
E N
O S C 1
O S C 2
Absolute Maximum Ratings
Supply Voltage ............................VSS-0.3V to VSS+13V
Storage Temperature ............................-50°C to 125°C
Input Voltage ................................VSS-0.3 to VDD+0.3V
Operating Temperature...........................-20°C to 75°C
Note: These are stress ratings only. Stresses exceeding the range specified under ²Absolute Maximum 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.
Rev. 1.10
3
January 24, 2003
HT600/HT680/HT6207
Electrical Characteristics
Symbol
Parameter
VDD
Operating Voltage
ISTB
Standby Current
Ta=25°C
Test Conditions
VDD
Conditions
¾
¾
3V
Oscillator stops
12V
5V
IDD
Operating Current
No load, fOSC=100kHz
12V
ILED
LED Sink Current
IDOUT
Output Drive Current
Min.
Typ.
Max.
Unit
2.4
¾
12
V
¾
0.1
1
mA
¾
2
4
mA
¾
250
500
mA
¾
1200
2400
mA
5V
VLED=0.5V
1.5
3
¾
mA
5V
VOH=0.9VDD (Source)
-0.6
-1.2
¾
mA
5V
VOL=0.1VDD (Sink)
0.6
1.2
¾
mA
VIH
²H² Input Voltage
¾
¾
0.8VDD
¾
VDD
V
VIL
²L² Input Voltage
¾
¾
0
¾
0.2VDD
V
fOSC
Oscillator Frequency
10V ROSC=330kW
¾
100
¾
kHz
RTE
TE Pull-low Resistance
5V
VTE=5V
¾
1.5
3
MW
RDATA
D12~D17 Pull-low Resistance
5V
VDATA=5V
¾
1.5
3
MW
Rev. 1.10
4
January 24, 2003
HT600/HT680/HT6207
Functional Description
Operation
The 318 series of encoders begins a three-word transmission cycle upon receipt of a transmission enable (TE for the
HT600/HT680 or D12~D15 for the HT6207, active high). This cycle will repeat itself as long as the transmission enable
(TE or D12~D15) is held high. Once the transmission enable falls low, the encoder output completes its final cycle and
then stops as shown below.
T E o r
D 1 2 ~ D 1 5
< 1 w o rd
E n c o d e r
D a ta O u t
T r a n s m itte d
C o n tin u o u s ly
3 w o rd s
3 w o rd s
Transmission timing
Information Word
An information word consists of four periods as shown:
1 /6 b it
P ilo t p e r io d
( 6 b its )
A d d r e s s c o d e p e r io d
S y n c . p e r io d
D a ta c o d e p e r io d
Composition of information
Address/Data Waveform
Each programmable address/data pin can be externally set to one of the following three logic states:
fo s c ¸ 3 3
"O n e "
"Z e ro "
"O p e n "
A d d r e s s /D a ta B it
Address/Data bit waveform
The ²Open² state data input is interpreted as logic low by the decoders since the decoder output only have two states.
Address/Data Programming (Preset)
The status of each address/data pin can be individually preset to logic ²high², ²low², or ²floating². If a transmission enable signal is applied, the encoder scans and transmits the status of the 18 bits of address/data serially in the order A0
to AD17 for the HT600/HT680 and A0 to D15 for the HT6207.
There are some packaging limitations. For example t he 18-pin DIP HT680, offers four external data bits and eight external address bits. The remaining unpackaged bits or dummy codes are treated as floating for A0~AD17 or as pull-low
for D12~D15. During an information transmission these bits are still located in their original position. But if the trigger
signal is not applied, the chip only consumes a standby current which is less than 1mA.
Rev. 1.10
5
January 24, 2003
HT600/HT680/HT6207
The address pins are usually preset to transmit data codes with particular security codes by the DIP switches or PCB
wiring, while the data is selected using push buttons or electronic switches.
The following figure shows an application using the HT680:
O S C 1
O S C 2
T r a n s m is s io n
m e d iu m
D O U T
V S S
A 0
A 1
A 2
A 3
A 6
A 7
A 8
V D D
A 9
T E
A D 1 1 A D 1 2 A D 1 4 A D 1 5
V
D D
The transmitted information is as shown:
Pilot
&
Sync.
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
AD10
AD11
1
Z
0
0
Z
Z
0
Z
0
1
Z
Z
AD12
AD13
AD14
AD15
AD16
AD17
Z
Z
Z
1
Z
Z
¾
Z: floating
Address/Data Sequence
The following provides a table of address/data sequence for various models of the 318 series encoders.
Part No.
Address/Data Bits
0~3
4
5
6~9
10
11
12
13
14
15
16
17
HT600
A0~A3
A4
¾
A6~A9
¾
AD11
AD12
AD13
AD14
AD15
¾
¾
HT680
A0~A3
¾
¾
A6~A9
¾
AD11
AD12
¾
AD14
AD15
¾
¾
HT6207
A0~A3
A4
¾
A6~A9
¾
A11
D12
D13
D14
D15
Note:
²¾² is a dummy code which is left ²open² and not bonded out.
²
² is a dummy code which is set low and not bonded out.
Transmission Enable
For the TE trigger type of encoders, transmission is enabled by applying a high signal to the TE pin. But for the Data
trigger type of encoders, it is enabled by applying a high signal to one of the data pins D12~D15.
Rev. 1.10
6
January 24, 2003
HT600/HT680/HT6207
Flowchart
P o w e r o n
S ta n d b y m o d e
N o
T r a n s m is s io n
e n a b le d ?
Y e s
3 d a ta w o rd s
tr a n s m itte d
N o
T r a n s m is s io n
s till e n a b le d ?
Y e s
3 d a ta w o rd s
tr a n s m itte d
c o n tin u o u s ly
Note:
D12~D15 are transmission enables of the HT6207.
TE is the transmission enable of the HT600/HT680.
Oscillator Frequency vs. Supply Voltage
fo s c
(S c a le )
R o s c (W )
3 .0 0
2 .7 5
1 2 0 k
2 .5 0
2 .2 5
1 5 0 k
2 .0 0
1 8 0 k
1 .7 5
1 .5 0
2 2 0 k
1 .2 5
2 7 0 k
3 3 0 k
(1 0 0 k H z ) 1 .0 0
3 9 0 k
4 7 0 k
5 6 0 k
6 8 0 k
8 2 0 k
1 M
1 .5 M
2 M
0 .7 5
0 .5 0
0 .2 5
2
3
4
5
6
7
8
9
1 0
1 1
1 2
1 2 .5
V
D D
(V D C )
The recommended oscillator frequency is fOSCD (decoder) @ fOSCE (encoder)
Rev. 1.10
7
January 24, 2003
HT600/HT680/HT6207
Application Circuits
T r a n s m itte r C ir c u it
V
1
2
A D 1 1
3
4
5
6
V D D
A D 1 2
A 9
A D 1 4
A 8
A D 1 5
A 7
D O U T
A 6
T E
7
R o s c
8
9
A 3
O S C 2
A 2
O S C 1
A 1
V S S
T r a n s m itte r C ir c u it
D D
V
1 8
1
1 7
2
1 6
3
1 5
4
1 4
5
1 3
6
1 2
7
1 1
8
1 0
A 0
R o s c
H T 6 8 0
9
1 0
A D 1 1
V D D
A D 1 2
A 9
A D 1 3
A 8
A D 1 4
A 7
A D 1 5
A 6
D O U T
A 4
T E
A 3
O S C 2
A 2
O S C 1
A 1
V S S
A 0
D D
2 0
1 9
1 8
1 7
1 6
1 5
1 4
1 3
1 2
1 1
H T 6 0 0
T r a n s m itte r C ir c u it
V
1
2
3
4
5
6
1 k W
7
8
R o s c 9
1 0
A 1 1
V D D
D 1 2
A 9
D 1 3
A 8
D 1 4
A 7
D 1 5
A 6
D O U T
A 4
L E D
A 3
O S C 2
A 2
O S C 1
A 1
V S S
A 0
D D
2 0
1 9
1 8
1 7
1 6
1 5
1 4
1 3
1 2
1 1
H T 6 2 0 7
Rev. 1.10
8
January 24, 2003
HT600/HT680/HT6207
Package Information
18-pin DIP (300mil) Outline Dimensions
A
B
1 8
1 0
1
9
H
C
D
E
a
G
I
F
Symbol
A
Rev. 1.10
Dimensions in mil
Min.
Nom.
Max.
895
¾
915
B
240
¾
260
C
125
¾
135
D
125
¾
145
E
16
¾
20
F
50
¾
70
G
¾
100
¾
H
295
¾
315
I
335
¾
375
a
0°
¾
15°
9
January 24, 2003
HT600/HT680/HT6207
20-pin DIP (300mil) Outline Dimensions
A
B
2 0
1 1
1
1 0
H
C
D
E
Symbol
Rev. 1.10
F
a
G
I
Dimensions in mil
Min.
Nom.
Max.
A
1020
¾
1045
B
240
¾
260
C
125
¾
135
D
125
¾
145
E
16
¾
20
F
50
¾
70
G
¾
100
¾
H
295
¾
315
I
335
¾
375
a
0°
¾
15°
10
January 24, 2003
HT600/HT680/HT6207
18-pin SOP (300mil) Outline Dimensions
1 0
1 8
B
A
9
1
C
C '
G
H
D
E
Symbol
Rev. 1.10
a
F
Dimensions in mil
Min.
Nom.
Max.
A
394
¾
419
B
290
¾
300
C
14
¾
20
C¢
447
¾
460
D
92
¾
104
E
¾
50
¾
F
4
¾
¾
G
32
¾
38
H
4
¾
12
a
0°
¾
10°
11
January 24, 2003
HT600/HT680/HT6207
20-pin SOP (300mil) Outline Dimensions
1 1
2 0
A
B
1
1 0
C
C '
G
H
D
E
Symbol
Rev. 1.10
a
F
Dimensions in mil
Min.
Nom.
Max.
A
394
¾
419
B
290
¾
300
C
14
¾
20
C¢
490
¾
510
D
92
¾
104
E
¾
50
¾
F
4
¾
¾
G
32
¾
38
H
4
¾
12
a
0°
¾
10°
12
January 24, 2003
HT600/HT680/HT6207
Product Tape and Reel Specifications
Reel Dimensions
D
T 2
A
C
B
T 1
SOP 18W
Symbol
Description
Dimensions in mm
A
Reel Outer Diameter
330±1.0
B
Reel Inner Diameter
62±1.5
C
Spindle Hole Diameter
13.0+0.5
-0.2
D
Key Slit Width
2.0±0.5
T1
Space Between Flange
24.8+0.3
-0.2
T2
Reel Thickness
30.2±0.2
SOP 20W
Symbol
Description
Dimensions in mm
A
Reel Outer Diameter
330±1.0
B
Reel Inner Diameter
62±1.5
C
Spindle Hole Diameter
13.0+0.5
-0.2
D
Key Slit Width
2.0±0.5
T1
Space Between Flange
24.8+0.3
-0.2
T2
Reel Thickness
30.2±0.2
Rev. 1.10
13
January 24, 2003
HT600/HT680/HT6207
Carrier Tape Dimensions
P 0
D
P 1
t
E
F
W
C
D 1
B 0
P
K 0
A 0
SOP 18W
Symbol
Description
Dimensions in mm
24.0+0.3
-0.1
W
Carrier Tape Width
P
Cavity Pitch
16.0±0.1
E
Perforation Position
1.75±0.1
F
Cavity to Perforation (Width Direction)
11.5±0.1
D
Perforation Diameter
1.5±0.1
D1
Cavity Hole Diameter
1.5+0.25
P0
Perforation Pitch
4.0±0.1
P1
Cavity to Perforation (Length Direction)
2.0±0.1
A0
Cavity Length
10.9±0.1
B0
Cavity Width
12.0±0.1
K0
Cavity Depth
2.8±0.1
t
Carrier Tape Thickness
0.3±0.05
C
Cover Tape Width
21.3
SOP 20W
Symbol
W
Description
Dimensions in mm
24.0+0.3
-0.1
Carrier Tape Width
P
Cavity Pitch
12.0±0.1
E
Perforation Position
1.75±0.1
F
Cavity to Perforation (Width Direction)
11.5±0.1
D
Perforation Diameter
1.5+0.1
D1
Cavity Hole Diameter
1.5+0.25
P0
Perforation Pitch
4.0±0.1
P1
Cavity to Perforation (Length Direction)
2.0±0.1
A0
Cavity Length
10.8±0.1
B0
Cavity Width
13.3±0.1
K0
Cavity Depth
3.2±0.1
t
Carrier Tape Thickness
0.3±0.05
C
Cover Tape Width
Rev. 1.10
21.3
14
January 24, 2003
HT600/HT680/HT6207
Holtek Semiconductor Inc. (Headquarters)
No.3, Creation Rd. II, Science Park, Hsinchu, Taiwan
Tel: 886-3-563-1999
Fax: 886-3-563-1189
http://www.holtek.com.tw
Holtek Semiconductor Inc. (Taipei Sales Office)
4F-2, No. 3-2, YuanQu St., Nankang Software Park, Taipei 115, Taiwan
Tel: 886-2-2655-7070
Fax: 886-2-2655-7373
Fax: 886-2-2655-7383 (International sales hotline)
Holtek Semiconductor Inc. (Shanghai Sales Office)
7th Floor, Building 2, No.889, Yi Shan Rd., Shanghai, China 200233
Tel: 021-6485-5560
Fax: 021-6485-0313
http://www.holtek.com.cn
Holtek Semiconductor Inc. (Shenzhen Sales Office)
5/F, Unit A, Productivity Building, Cross of Science M 3rd Road and Gaoxin M 2nd Road, Science Park, Nanshan District,
Shenzhen, China 518057
Tel: 0755-8616-9908, 8616-9308
Fax: 0755-8616-9533
Holtek Semiconductor Inc. (Beijing Sales Office)
Suite 1721, Jinyu Tower, A129 West Xuan Wu Men Street, Xicheng District, Beijing, China 100031
Tel: 010-6641-0030, 6641-7751, 6641-7752
Fax: 010-6641-0125
Holtek Semiconductor Inc. (Chengdu Sales Office)
709, Building 3, Champagne Plaza, No.97 Dongda Street, Chengdu, Sichuan, China 610016
Tel: 028-6653-6590
Fax: 028-6653-6591
Holmate Semiconductor, Inc. (North America Sales Office)
46729 Fremont Blvd., Fremont, CA 94538
Tel: 510-252-9880
Fax: 510-252-9885
http://www.holmate.com
Copyright Ó 2003 by HOLTEK SEMICONDUCTOR INC.
The information appearing in this Data Sheet is believed to be accurate at the time of publication. However, Holtek assumes no responsibility arising from the use of the specifications described. The applications mentioned herein are used
solely for the purpose of illustration and Holtek makes no warranty or representation that such applications will be suitable
without further modification, nor recommends the use of its products for application that may present a risk to human life
due to malfunction or otherwise. Holtek¢s products are not authorized for use as critical components in life support devices
or systems. Holtek reserves the right to alter its products without prior notification. For the most up-to-date information,
please visit our web site at http://www.holtek.com.tw.
Rev. 1.10
15
January 24, 2003