View HT624002_4123460.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

HT6240-002 Infrared Remote Encoder
Features
* Operating voltage: 2.2V~3.6V * Low power consumption * Few external parts * 20/24-pin SOP package
Applications
* Television and video cassette recorder * Car door controllers * Security systems * Other remote control systems
controllers
* Garage door controllers
General Description
HT6240-002 is designed as infrared remote encoders, usually applied to TV systems. The 48 key matrix input and the extension bit input can transmit a max. of 256 instructions. HT6240-002 have two different packages: 20-pin SOP and 24-pin SOP.
Block Diagram
PRB OSCI OSCO
OSC
322 D u ty 1 /3
102 D iv id e r
8
K ey S can D r iv e r D ecoder O u tp u t S ta g e
O.0 O.7 CT
TEST
TEST MODE
IE 0 IE 1 IE 2 IE 3
IE -K E Y E ncoder
C o n tro l U n it
DATA
8 - B it S h ift R e g is te r
C u s to m C o d e & DATA Code L a tc h
P a r a lle l to S e r ia l C o n v e rte r
VDD
VSS
Pin Assignment
VSS TEST VSS TEST PRB OSCI OSCO DATA IE 0 IE 1 IE 2 IE 3 9 10 8 7 6 5 4 3 2 1 20 19 18 17 16 15 14 13 12 11 VDD CT O.0 O.1 O.2 O.3 O.4 O.5 O.6 O.7 PRB OSCI OSCO DATA IE 0 IE 1 IE 2 IE 3 NC NC 9 10 11 12 8 7 6 5 4 3 2 1 24 23 22 21 20 19 18 17 16 15 14 13 VDD CT O.0 O.1 O.2 O.3 O.4 O.5 O.6 O.7 NC NC
H T 6 2 4 0 -0 0 2 2 0 S O P -A
Rev. 1.30 1
H T 6 2 4 0 -0 0 2 2 4 S O P -A
November 6, 2002
HT6240-002
Pad Assignment
TEST 20 VDD 18 VSS 19 CT 17
PRB 1 2 OSCI
(0 ,0 )
16 15
O.0 O.1
OSCO 3 DATE
14 4 5 6 7 IE 2 8 9 O.7 IE 3 10 O.6 12 11 13
O.2 O.3
IE 0 IE 1
O.4 O.5
Chip size: 92 118 mil2 * The IC substrate should be connected to VDD in the PCB layout artwork.
Pad Coordinates
Pad No. 1 2 3 4 5 6 7 8 9 10 X -40.88 -40.88 -40.88 -40.88 -40.88 -40.88 -13.77 -7.14 9.22 24.40 Y 16.11 9.48 -11.56 -24.78 -34.04 -41.18 -52.78 -52.78 -53.55 -53.55 Pad No. 11 12 13 14 15 16 17 18 19 20 X 40.12 40.12 40.12 40.12 40.12 40.12 34.47 -8.97 -15.60 -22.23 Y
Unit: mil
-48.32 -39.74 -24.57 -15.98 -0.81 7.78 53.59 53.59 53.59 52.02
Rev. 1.30
2
November 6, 2002
HT6240-002
Pad Description
Pad No. 1 2 3 4 5~8 9~16 17 18 19 20 Pad Name PRB OSCI OSCO DATA IE0~IE3 OF7~OF0 CT VDD VSS TEST I/O I I O I/O I O O 3/4 3/4 I Internal Connection CMOS Pull-high CMOS CMOS CMOS, NMOS Pull-high CMOS Pull-high NMOS CMOS 3/4 3/4 CMOS Power on reset Oscillator input Oscillator output Detect custom code and extended code Detect input from key matrix Drive for key scan Generates output transmission code Positive power supply Negative power supply TEST=Low normal mode TEST=High test mode Description
Approximate internal connection circuits
In p u t te r m in a l P in : T E S T , O S C I
V
DD
P in : P R B , IE 0 ~ IE 3
V
DD
V
DD
O u tp u t te r m in a l P in : O S C O , C T
V
DD
P in : O . 0 ~ O . 7
B id ir e c tio n a l te r m in a l P in : D A T A
V
DD
Rev. 1.30
3
November 6, 2002
HT6240-002
Absolute Maximum Ratings
Supply Voltage .........................................-0.3V to 5.2V Output Voltage..............................................VSS to VDD Operating Temperature ...........................-20C to 70C Note: These are stress ratings only. Stresses exceeding the range specified under Absolute Maximum Ratings 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. Input Voltage ..................................VSS-0.3 to VDD+0.3 Storage Temperature ............................-40C to 125C
Recommended Operating Condition
Symbol VDD Parameter Supply Voltage High-level Input Voltage IE0~IE3, DATA VIH High-level Voltage PRB Low-level Input Voltage IE0~IE3, DATA VIL Low-level Input Voltage PRB fOSC Clock Oscillating Frequency 3V 3V 3V 3V Test Conditions VDD 3/4 3V Conditions 3/4 3/4 3/4 3/4 3/4 3/4
Ta=-20C~70C, unless otherwise noted Min. 2.2 2.4V 2.1V 0 0 3/4 Typ. 3/4 3V 3V 0 0 455 Max. 3.6 3V V 3V 1.2V V 0.9V 3/4 kHz Unit V
Electric Characteristics
Symbol Parameter VDD 3/4 3V 3V 3V 3V 3V 3V 3V 3V 3V
Ta=25C, VDD=3V, VSS=0V, unless otherwise noted Test Conditions Conditions fOSC=455kHz, Ta=-20C~70C fOSC=455kHz 3/4 VOH=2V VOL=0.9V VOL=0.9V VOL=0.9V 3/4 3/4 3/4 Min. 2.2 3/4 3/4 -5 0.3 1 1 3/4 3/4 3/4 Limits Typ. 3/4 0.1 3/4 -10 0.8 4 4 80 70 70 Max. 3.6 0.3 1 3/4 3/4 3/4 3/4 3/4 3/4 3/4 kW mA Unit
VDD IDD IDD IOH
Supply Voltage Supply Current (during operation) Supply Current (while not in operation) High-level Output Current CT Low-level Output Current CT
V mA mA mA
IOL
Low-level Output Current DATA Low-level Output Current OF0~OF7 Pull-up Resistance PRB
RI
Pull-up Resistance DATA Pull-up Resistance E0~E3
Rev. 1.30
4
November 6, 2002
HT6240-002
Functional Description
Key operation The input pins (IE0~IE3) and the output pins (OF0~OF7) constitute a max. of 48 key matrix which is also called standard key. The extended key is formed by input pin DATA and the scan output (OF5~OF7). The 48 key matrix and the extended key can transmit a max. of 256 instruction. CT maintains L and no transmission code is generated when two or more keys in standard key are pressed. Table 1 shows the relationship between the key matrix and the transmission code. Table 1 Transmission Code Key Input IE0 IE1 IE2 IE3 D1 0 0 1 1 D0 0 1 0 1 Extended bit The extended bit is formed by input pin DATA and the scan output (OF5~OF7). Fig. 2 shows an example of extended bit selection. Fig. 1
DATA
O.0
O.1
O.2
O.3
O.4
C u s to m
code
C0C1C2C3C4C5C6C7 1 1 0 0 1 0 0 0
Transmission Code Scan Output OF0 OF1 OF2 OF3 OF4 OF5 OF6 OF7
D4 0 0 0 0 1 1 1 1
D3 0 0 1 1 0 0 1 1
D2 0 1 0 1 0 1 0 1
DATA
O.5
O.6
O.7
D A TA code SW =O N SW =O ..
D5 1 1
D6 1 0
D7 0 0
Transmission Code DATA Input OF5 OF6 OF7 Custom code
D7 3/4 3/4 1
D6 3/4 1 3/4
D5 1 3/4 3/4 Fig. 2 Clock oscillating circuit
SW
The custom code is made up of input pin DATA and scan output OF0~OF4. It has 8 bits (C0~C7); the lower 3 bits of the custom code (C5, C6 and C7) are fixed as 0. Fig. 1 shows an example of custom code selection.
HT6240 has built-in feedback resistor and CMOS inverter, so a ceramic resonator can connect between the oscillator circuit input pin (OSCI) and the output pin (OSCO), (see Fig. 3). When the ceramic resonator is set to 455kHz, the carrier can be set 38kHz.
Rev. 1.30
5
November 6, 2002
HT6240-002
The oscillating circuit will stop when there is no key pressed to save power dissipation. Transmission code When the resonator is 455kHz, the carrier of the transmission signal is 38kHz. One pulse width is 0.53ms. Therefore, twenty 38kHz clocks are included in the 0.53ms pulse width. (Fig.4 shows the carrier) HT6240-002 has two different formats. When the custom code is equal to zero, CT will send the 1st format. Otherwise, it will send the 2nd format.
C
LO
H T 6 2 4 0 -0 0 2
OSCI OSCO
C
LI
N o te : T h e s e c a p a c ito r s d e p e n d o n th e r e s o n a to r s . U s e th e v a lu e s r e c o m m e n d e d b y th e r e s o n a to r m a n u fa c tu re r.
If the custom code (C0~C7) is 0000 0000 then Fig. 5 shows the formation of the transmission code. Fig. 6 shows the transmission code 0 and 1 and pulse width. Fig. 7 shows the formation of the 1-word transmission code. If a legal key is pressed, HT6240-002 will send at least five words (see Fig. 8).
Fig. 3
2 6 .4 m s
8 .8 m s
0 .5 3 m s
Fig. 4 Carrier
0 .5 3 m s B it " 0 " 2 .1 1 m s 0 .5 3 m s B it " 1 " 4 .2 2 m s
D0
D1
D2
D3
D4
D5
D a ta c o d e
Fig. 5 Formation of the transmission code
Fig. 6 Transmission code 0 and 1 and pulse width of HT6240-002
D0
D1
D2 1 w o rd
D3
D4
D5
5 0 .6 m s
Fig. 7 The formation of the 1-word transmission code
1 -w o rd 5 0 .6 m s
1 -w o rd 5 0 .6 m s
1 -w o rd 5 0 .6 m s
1 -w o rd 5 0 .6 m s
1 -w o rd
Fig. 8 A legal key will send at least five words
Rev. 1.30
6
November 6, 2002
HT6240-002
On table 2, the relationship between the key matrix and the transmission code is shown when custom code=0000 0000. The asterisks means that HT6240-002 can just send five words at a time even if a legal key is pressed for a long time. The others mean that HT6240-002 will send five or six words, even some more words if a legal key is still pressed. Table 2 OF0 OF1 OF2 OF3 OF4 OF5 OF6 OF7 IE0 IE1 IE2 IE3 00 01 02 03 04 05 06 07 08 09* 0A* 0B* 0C 0D* 0E* 0F* 10* 11* 12* 13* 14* 15* 16* 17* 18* 19* 1A* 1B* 1C* 1D* 1E* 1F* Power on reset function (PRB) The power on reset function can be activated by connecting a capacitor to PRB pin while power is applied. The time (tC) must be longer than 0.1ms when the voltage in PRB pin (VC) becomes higher than 0.3VDD after the voltage in VDD pin exceeds 2.2V. When the power on reset function is activated, the standby state continues until an L is input to IE0~IE3.
4 .2 2 m s C0C1C2C3C4C5C6C7 H e a d p u ls e C u s to m code D0D1D2D3D4D5D6D7 D a ta c o d e
If custom code 0000 0000 then Fig. 9 shows the formation of the transmission code. The transmission code consists of a head pulse, 8-bit custom code and 8-bit data code. Fig. 10 shows bit 0 and bit 1. The formation of a 1-word transmission code without carrier is shown in detail in Fig.11. Output CT should combine with the carrier when CT is high. CT will send at least three words if we press a legal key. CT may send three or four words, or several words depending on the length of time the legal key is pressed. (see Fig. 12)
There are 64 instructions when the custom code=0000 0000 in HT6240-002. The transmission output CT is still L and the transmission code will not be sent when two or more keys are pressed simultaneously.
8 .4 4 m s
4 .2 2 m s
Fig. 9 The formation of the transmission code when custom code 0000 0000
0 .5 3 m s B it " 0 " 1 .0 6 m s 0 .5 3 m s B it " 1 " 2 .1 1 m s
Fig. 10
D a ta c o d e
D0=0 D1=0 D2=0D3=0 D4=1 D5=0D6=0D7=0
H e a d p u ls e
C u s to m
C0=0 C1=1 C2=1
code
C3=0C4=0C5=0C6=0C7=0
8 .4 4 m s
4 .2 2 m s 1 -w o rd
4 .2 2 m s
Fig. 11
Rev. 1.30
7
November 6, 2002
HT6240-002
1 w o rd 6 7 .5 m s 1 w o rd
V o lta g e VDD 2 .2 V VDD p in
Fig. 12
P R B p in
VDD
VSS 1 3 PRB
20
0 .3 V
DD
0
T im e T
C
H T 6 2 4 0 -0 0 2
Fig. 13 Example of power-on reset function
> 0 .1 m s
Fig. 14 Relationship between the PRB pin and the voltage
Application Circuits
Example (1)
S e ttin g th e c u s to m V
DD
code
S e ttin g D 5 , D 6 , D 7 b its
S ta n d a rd k e y
47W 1kW
V
DD
20 VDD
19 CT
18 O.0
17 O.1
16 O.2
15 O.3
14 O.4
13 O.5
12 O.6
11 O.7
H T 6 2 4 0 -0 0 2
VSS TEST PRB OSCIOSCO 1 2 103 3 4 455K 471 471 5 DATA 6 7 IE 0 8 IE 1 9 IE 2 10 IE 3
"1 "
"0 "
or
Rev. 1.30
8
November 6, 2002
HT6240-002
Example (2)
S e ttin g th e c u s to m V
DD
code
D o u b le - p u s h e d k e y
S ta n d a rd k e y
47W 1kW
V
DD
20 VDD
19 CT
18 O.0
17 O.1
16 O.2
15 O.3
14 O.4
13 O.5
12 O.6
11 O.7
H T 6 2 4 0 -0 0 2
VSS TEST PRB OSCIOSCO 1 2 103 3 4 455K 471 471 5 DATA 6 7 IE 0 8 IE 1 9 IE 2 10 IE 3
"1 "
"0 "
or ( N o c o n n e c tio n )
Rev. 1.30
9
November 6, 2002
HT6240-002
Example (3)
S e ttin g c u s to m code E x te n d e d k e y
V
DD
S ta n d a rd k e y
47W 1kW V
DD
20 VDD
19 CT
18 O.0
17 O.1
16 O.2
15 O.3
14 O.4
13 O.5
12 O.6
11 O.7
H T 6 2 4 0 -0 0 2
VSS TEST PRB OSCIOSCO 1 2 103 3 4 455K 471 471 5 DATA 6 7 IE 0 8 IE 1 9 IE 2 10 IE 3
"1 "
"0 "
or ( N o c o n n e c tio n )
Rev. 1.30
10
November 6, 2002
HT6240-002
Example (4)
V
DD
47W 1kW V
DD
20 VDD
19 CT
18 O.0
17 O.1
16 O.2
15 O.3
14 O.4
13 O.5
12 O.6
11 O.7
H T 6 2 4 0 -0 0 2
VSS TEST PRB OSCIOSCO 1 2 103 3 4 455K 471 471 5 DATA 6 7 IE 0 8 IE 1 9 IE 2 10 IE 3
"1 "
"0 "
or ( N o c o n n e c tio n )
Rev. 1.30
11
November 6, 2002
HT6240-002
Package Information
20-pin SOP (300mil) outline dimensions
20
A
11
B
1
C C'
10
G H
D E .
a
Symbol A B C C D E F G H a
Dimensions in mil Min 394 290 14 490 92 3/4 4 32 4 0 Nom 3/4 3/4 3/4 3/4 3/4 50 3/4 3/4 3/4 3/4 Max 419 300 20 510 104 3/4 3/4 38 12 10
Rev. 1.30
12
November 6, 2002
HT6240-002
24-pin SOP (300mil) outline dimensions
24 A
13 B
1
12
C C' G H D E .
a
Symbol A B C C D E F G H a
Dimensions in mil Min. 394 290 14 590 92 3/4 4 32 4 0 Nom. 3/4 3/4 3/4 3/4 3/4 50 3/4 3/4 3/4 3/4 Max. 419 300 20 614 104 3/4 3/4 38 12 10
Rev. 1.30
13
November 6, 2002
HT6240-002
Product Tape and Reel Specifications
Reel dimensions
T2 D
A
B
C
T1
SOP 20W Symbol A B C D T1 T2 Description Reel Outer Diameter Reel Inner Diameter Spindle Hole Diameter Key Slit Width Space Between Flange Reel Thickness Dimensions in mm 3301.0 621.5 13.0+0.5 -0.2 2.00.5 24.8+0.3 -0.2 30.20.2
SOP 24W Symbol A B C D T1 T2 Description Reel Outer Diameter Reel Inner Diameter Spindle Hole Diameter Key Slit Width Space Between Flange Reel Thickness Dimensions in mm 3301.0 621.5 13.0+0.5 -0.2 2.00.5 24.8+0.3 -0.2 30.20.2
Rev. 1.30
14
November 6, 2002
HT6240-002
Carrier tape dimensions
D
E .
P0
P1
t
W C
B0
D1
P
K0 A0
SOP 20W Symbol W P E F D D1 P0 P1 A0 B0 K0 t C SOP 24W 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 24.00.3 12.00.1 1.750.1 11.50.1 1.55+0.1 1.5+0.25 4.00.1 2.00.1 10.90.1 15.90.1 3.10.1 0.350.05 21.3 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 24.0+0.3 -0.1 12.00.1 1.750.1 11.50.1 1.5+0.1 1.5+0.25 4.00.1 2.00.1 10.80.1 13.30.1 3.20.1 0.30.05 21.3
Rev. 1.30
15
November 6, 2002
HT6240-002
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 O 2002 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. Holteks 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. 1.30
16
November 6, 2002

▲Up To Search▲

Price & Availability of HT624002

	To Download HT624002 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .