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 for HT6P20B2, HT6P20D2 and HT6P20F2 ●● 8-Pin DIP package for HT6P20B2 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. . Selection Table The devices encodes 24-bits of information however the address/data combination is selected according to which part number is selected. Rev 1.10 Part Number Address Data HT6P20B2 22 2 HT6P20D2 20 4 HT6P20F2 19 5 1 April 26, 2011 HT6P20B2/D2/F2 Remote Control Encoder Block Diagram Internal RC oscillator System timing VDD VSS D0 Code Generation Control unit D1 DOUT Data Latch D2 D3 Mix Data / Address D4 Note: Address and Data combinations are available in various formats. Pin Assignment Pin Description Pin Name Type Description VDD ― Positive power supply VSS ― Negative power supply D0~D4 I Data input and transmission enable - active low Connected to internal pull-high resistor Pins can be pulled low or left open DOUT O Data serial transmission output pin Output normally low when not transmitting Approximate Internal Equivalent Circuits Rev 1.10 2 April 26, 2011 HT6P20B2/D2/F2 Remote Control Encoder Absolute Maximum Ratings Supply Voltage ..................................................................................................VSS-0.3V to VSS+15V Input Voltage ................................................................................................... VSS-0.3V to VDD+0.3V Output Voltage.................................................................................................. VSS-0.3V to VDD+0.3V Storage Temperature ................................................................................................... -55°C to 150°C Operating Temperature ................................................................................................. -40°C to 85°C 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. D.C. Characteristics Ta=25°C Symbol VDD Test Conditions Parameter VDD Supply Voltage ISB Stand-by current IOP Operating current VIH VIL Conditions Min. Typ. Max. Unit ― ― 2 ― 12 V 12 No load Input pins floating ― ― 1.0 μA No load Single data input pin “low” ― 30 100 12 5 ― 300 500 “H” Input Voltage ― ― 0.8VDD ― ― V “L” Input Voltage ― ― ― ― 0.2VDD V RPH Pull-high Resistor 5 12 D0~D4 ― ― 400 150 800 300 KΩ IOH Hi-level output current -2 -2.5 ― mA -6.5 -15 ― mA IOL Low-level output current 2 2.5 ― mA 6.5 15 ― mA tDW Single bit data width 1.08 1.2 1.32 ms 5 VOH=0.9VDD ; DOUT 12 5 VOL=0.1VDD ; DOUT 12 5 ― μA Note: Single bit data width (tDW) vs. VDD curve is shown as below: tDW vs. VDD 2.5 tDW (ms) 2 1.5 1 0.5 0 0 1 2 3 4 5 6 7 8 9 10 11 12 13 VDD (V) Rev 1.10 3 April 26, 2011 HT6P20B2/D2/F2 Remote Control Encoder Functional Description The HT6P20X2 series of remote control devices provide a means for easy remote control signal encoding. As all functions, including the system oscillator, are integrated within the devices, the addition of external switches and an RF transmitter is all that is required to implement a full remote control transmitter function. The devices will generate an encoded signal on their output pin, DOUT, composed of pilot code, address code, data code and end code. The signal is automatically generated on the DOUT pin when any of the data input pins, D0~D4, change from high to low. Internal pull-high resistors keep these data input pins in a normally high condition. The output signal can be interfaced to RF modules for wireless signal transmission. Signal Generation The devices will encode and transmit pilot code, address/data and end code, upon receipt of a trigger signal. The trigger signal is a high to low transition on any of the data input pins, D0~D4. The pins are normally kept at a high level by internal pull-high resistors. Code Word What is known in this datasheet as a code word is a packet of information composed of pilot code, address code, data code and end code. The pilot code and end code is the same for all devices. The address and data combinations are shown in the following signal descriptions. HT6P20B2 Pilot code A0~A21 D1~D0 End code (0101) A0~A19 D3~D0 End code (0101) A0~A18 D4~D0 End code (0101) HT6P20D2 Pilot code HT6P20F2 Pilot code The following shows a complete code word transmission signal. Note that if the Data lines remain low then the signal will be continuously transmitted. VDD D0~D4 VSS 1ms Max. VDD DOUT VSS Pi�ot code �dd�ee/data/end code Signal Trigger Signal transmission 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. D0~D4 ＜ Pi�ot code ＞ 1 code wo�d Pi�ot code ＜ �ctive ＜ 1 code wo�d 1 code wo�d DOUT Rev 1.10 4 April 26, 2011 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. 1λ 23λ 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” Bit“1” 1λ 2λ 1λ 2λ Address/ Data bit 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 Bit”0" MSB Rev 1.10 Bit”1" Bit”0" End code (0-1-0-1) 5 Bit”1" LSB April 26, 2011 HT6P20B2/D2/F2 Remote Control Encoder Operation Flowchart Powe� ON Stand-By Mode no Data in�ut Pin in Low State yes 1 wo�d of �i�ot code/add�ess/data/end code t�ansmitted no Rev 1.10 Data in�ut Pin sti�� in Low State 6 yes April 26, 2011 HT6P20B2/D2/F2 Remote Control Encoder Application Circuit HT6P20B2 C4 L1 VBAT ANT C1 C2 C3 HT6P20B2 5 R2 6 7 NPN R3 8 R1 NC DOUT VDD NC NC VSS D1 D0 4 3 2 1 S2 S1 LED HT6P20D2 C4 L1 VBAT HT6P20D2 ANT C1 C2 1 C3 2 R2 3 NPN 4 R3 VDD NC VSS D3 DOUT D2 D0 D1 8 7 6 5 S4 S3 S2 S1 R1 LED Rev 1.10 7 April 26, 2011 HT6P20B2/D2/F2 Remote Control Encoder HT6P20F2 C4 VBAT 2.2uH HT6P20F2 ANT C1 C2 1 C3 2 R2 3 NPN 4 R3 VDD VSS DOUT D0 D4 D3 D2 D1 8 7 6 5 S5 S4 S3 S2 S1 R1 LED Rev 1.10 8 April 26, 2011 HT6P20B2/D2/F2 Remote Control Encoder Package Information 8-pin SOP (150mil) Outline Dimensions ●● MS-012 Symbol Nom. Max. A 0.228 ― 0.244 B 0.150 ― 0.157 C 0.012 ― 0.020 C’ 0.188 ― 0.197 D ― ― 0.069 E ― 0.050 ― F 0.004 ― 0.010 G 0.016 ― 0.050 H 0.007 ― 0.010 α 0° ― 8° Symbol Rev 1.10 Dimensions in inch Min. Dimensions in mm Min. Nom. A 5.79 ― Max. 6.20 B 3.81 ― 3.99 0.51 C 0.30 ― C’ 4.78 ― 5.00 D ― ― 1.75 E ― 1.27 ― F 0.10 ― 0.25 G 0.41 ― 1.27 H 0.18 ― 0.25 α 0° ― 8° 9 April 26, 2011 HT6P20B2/D2/F2 Package Information Remote Control Encoder Plastic DIP Outline Dimensions 8-pin DIP Dimensions 8-pin DIP(300mil) (300mil)Outline Outline Dimensions Symbol Symbol Dimensions Dimensions in inch in inch Nom. Nom. Max. Max. A A 0.355 0.355 ― B B 0.240 0.240 ― 0.375 0.375 0.260 0.260 C C 0.125 0.125 ― 0.135 0.135 D D 0.125 0.125 ― 0.145 0.145 E E 0.016 0.016 — 0.020 0.020 F F 0.050 0.050 ― G G — 0.100 0.100 H H 0.295 0.295 ― I I — 0.375 0.375 Symbol Symbol Dimensions Dimensions in mm in mm Nom. Nom. ― 0.070 0.070 — 0.315 0.315 — Min. Min. A 9.02 9.02 B B 6.10 6.10 ― 6.60 6.60 C C 3.18 3.18 ― 3.43 3.43 D D 3.18 3.18 ― 3.68 3.68 E E 0.41 0.41 ― 0.51 0.51 F F 1.27 1.27 — 1.78 1.78 G G — 2.54 2.54 — H H 7.49 7.49 ― 8.00 8.00 I I — 9.53 9.53 — A Rev 1.10 Min. Min. 10 1 Max. Max. 9.53 9.53 April 1, 2010 April 26, 2011 HT6P20B2/D2/F2 Remote Control Encoder Reel Dimensions ●● SOP 8N Symbol Rev 1.10 Description Dimensions in mm A Reel Outer Diameter 330.0±1.0 B Reel Inner Diameter 100.0±1.5 C Spindle Hole Diameter 13.0 D Key Slit Width T1 Space Between Flange 12.8+0.3/-0.2 T2 Reel Thickness 18.2±0.2 +0.5/-0.2 2.0±0.5 11 April 26, 2011 HT6P20B2/D2/F2 Remote Control Encoder Carrier Tape Dimensions ●● SOP 8N Symbol Rev 1.10 Description W Carrier Tape Width Dimensions in mm 12.0+0.3/-0.1 P Cavity Pitch 8.0±0.1 E Perforation Position 1.75±0.1 F Cavity to Perforation (Width Direction) 5.5±0.1 D Perforation Diameter 1.55±0.1 D1 Cavity Hole Diameter 1.50+0.25/-0.00 P0 Perforation Pitch 4.0±0.1 P1 Cavity to Perforation (Length Direction) 2.0±0.1 A0 Cavity Length 6.4±0.1 B0 Cavity Width 5.2±0.1 K0 Cavity Depth 2.1±0.1 t Carrier Tape Thickness C Cover Tape Width 0.30±0.05 9.3±0.1 12 April 26, 2011 HT6P20B2/D2/F2 Remote Control Encoder 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. (Shenzhen Sales Office) 5F, Unit A, Productivity Building, No.5 Gaoxin M 2nd Road, Nanshan District, Shenzhen, China 518057 Tel: 86-755-8616-9908, 86-755-8616-9308 Fax: 86-755-8616-9722 Holtek Semiconductor (USA), Inc. (North America Sales Office) 46729 Fremont Blvd., Fremont, CA 94538, USA Tel: 1-510-252-9880 Fax: 1-510-252-9885 http://www.holtek.com Copyright© 2011 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 13 April 26, 2011