HT6P427A/HT6P437A Learning RF Encoder with Crystal SOC Features General Description • Operating voltage: 2.0V ~3.6V The HT6P4x7A devices form a series of data encoders which include fully integrated ASK transmitters for remote control system applications. These highly integrated chips are true “switch-in, antenna-out” monolithic devices. They encode 24 or 28 bits of information and then serially transmit the data out on their PAOUT pin upon receipt of a transmission enable (Data pins: D0~D3 or B0~B1) signal. They encode address and data information into a coded waveform suitable for modulation and transmission using their integrated RF circuits. The devices offer high performance in two areas: power level and operating temperature. In terms of power level, the devices are capable of delivering +16dBm into a 50W load. This power level enables a small form factor transmitter such as a key fob transmitter to operate with a maximum distance. In terms of temperature, they can operate from -40ºC to 85ºC with very little frequency drift. They additionally offer exceptional ease of use. One only needs a reference frequency generated from an external crystal to create a complete versatile transmitter. The devices are used with ASK/OOK (Amplitude Shift Keying/On-Off Keyed) UHF receiver types from wide-band superregenerative radios to narrow-band, high performance super-heterodyne receivers. • Average Operation Current ♦♦ 13mA @ VDD=3.0V, 12dBm, 315MHz ♦♦ 22mA @ VDD=3.0V, 16dBm, 315MHz • Standby current: 1.0μA (Max.) @ VDD=3V • Up to 4 data pins • Provides 2 compound Data trigger pins • Up to 224 address codes • 8 bit time via 2 pin selection • Integrated complete UHF transmitter • Frequency range: 300MHz to 450MHz • Supports ASK/OOK modulation • 3 output power levels: 12dBm/14dBm/16dBm via 1 pin selection • Minimal external components • High noise immunity • 16-Pin NSOP package Applications • Burglar alarm systems • Smoke and fire alarm systems • Personal alarm systems • Car/Garage door controllers • Home/office/car security systems • Other remote control systems Selection Table VDD HT6P427A 2.0V~3.6V 20 4 2 HT6P437A 2.0V~3.6V 24 4 2 Rev. 1.00 Addr. No. Data No. Compound Data No. Part No. 1 Trig. Frequency Band RF Type Package Data High 300~450MHz ASK TX 16NSOP Data High 300~450MHz ASK TX 16NSOP December 19, 2014 HT6P427A/HT6P437A Block Diagram Pin Assignment 2 0 A d d re s s + 4 D a ta B 1 1 1 6 2 1 5 3 D 3 B 1 D 2 B 0 1 4 D 1 B T S 1 4 1 3 D 0 B T S 0 5 1 2 D O U T O P S 6 1 1 X O U T V D D 7 1 0 X IN V S S 8 9 B 0 B T S 1 B T S 0 O P S V D D V S S P A O U T 2 4 A d d re s s + 4 D a ta P A O U T P V S S Rev. 1.00 D 3 1 1 6 2 1 5 3 1 4 D 1 4 1 3 D 0 5 1 2 D O U T 6 1 1 7 1 0 8 9 D 2 X O U T X IN P V S S 2 December 19, 2014 HT6P427A/HT6P437A Pin Description Pin No. Pin Name I/O Internal Connection Description 1~2 B1~B0 I CMOS IN Compound pin - D0+D3 for B0 and D1+D2 for B1 Transmission enable active high 3~4 BTS1~BTS0 I CMOS IN Bit Time Select Pins. Set to VDD, floating or ground to select 8 bit width types. 5 OPS I CMOS IN Output Power Select Pin. Set to VDD, floating or ground to select one of 3 power output levels. VDD : 16dBm, Floating: 14dBm, GND: 12dBm 6 VDD P — Positive power supply 7 VSS P — Negative power supply, ground 8 PAOUT O 9 PVSS P Power Amplify This pin should be combined with an external matching circuit Output — RF negative power supply, ground 10 XIN I Oscillator 9.84375MHz Crystal oscillator input for 315MHz RF. Crystal selection is the desired RF frequency/32. 11 XOUT O Oscillator 9.84375MHz Crystal oscillator output for 315MHz RF 12 DOUT O — 13~16 D0~D3 I CMOS IN Encoder data out Data input and transmission - enable active high Approximate Internal Connections Rev. 1.00 3 December 19, 2014 HT6P427A/HT6P437A Absolute Maximum Ratings Logic Supply Voltage................. VSS-0.3V to VSS+3.6V Operating Temperature........................... -40˚C to 85˚C Logic Input Voltage................... VSS-0.3V to VDD+0.3V Logic Output Voltage................ VSS-0.3V to VDD+0.3V ESD HBM........................................................ > ±5KV ESD MM......................................................... > ±400V Storage Temperature ....………………-55˚C to 150˚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 Symbol Parameter Ta=25°C Test Condition VDD Logic Supply Voltage — ISB Stand-by Current 3V VIH “H” Input Voltage — Min. Typ. 2.0 3.0 3.6 V — — 1.0 μA 0.8VDD — — V Condition VDD — No load. Input pins floating — — Max. Unit VIL “L” Input Voltage — — — 0.2VDD V RPL Pull-high Resistance 3V D0~D3, B0~B1 — 500 — kΩ IOH Hi-level output current 3V VOH=0.9VDD; DOUT — -7 — mA IOL Low-level output current 3V VOL=0.1VDD; DOUT — 2 — mA R.F. Characteristics Specifications apply for VDD=3.0V, TA=25°C, Freq 315MHz unless otherwise noted. RL 50Ω load (matched) Symbol Parameter Test Conditions I1 Average Data Current* 50% Duty Cycle Data 3V I0 Data Low Current 3V Min Conditions VDD @ 315MHz, POUT=+16dBm — @ 315MHz, POUT=+12dBm — Typ 22 13 Max Units — mA mA — 4.5 — RF and Crystal 0 — 12 — Floating — 14 — 1 — 16 — — 70 — dBc 3V STDBY transition from Low to Hihg — 10 — ms ASK to RF Out Response Time Delta between ASK input transition 3V from Low to High to RF Output Transition from Low to High — 1 — μs Harmonics output for 315MHz 3V Occupied Bandwidth 3V @315MHz Output Power Level @315MHz 3V Extinction Ratio for ASK 10Kbps 3V Output Blanking OPS — dBm @630MHz, 2nd harm — -45 — dBc @945MHz, 3rd harm — -49 — dBc — <700 — kHz @100kHz from Carrier — -70 — @1000kHz from Carrier — -75 — dBc/ Hz — 2 — pF 315 MHz Single Side Band Phase Noise 3V XTLIN, XTLOUT 3V Pin capacitance Note: It is recommended that the VDD power on rise time should be less than 500μs to allow the device to power up normally and start normal operation. Rev. 1.00 4 December 19, 2014 HT6P427A/HT6P437A Functional Description Code Bits A code bit is the basic component of the encoded waveform, and can be classified as either an address/ data bit or a pilot-code which is a synchronous bit. The devices encode both address and data information into an encoded waveform and output it on DOUT. This waveform is fed to the RF modulator for transmission purposes. Address/Data Bit Waveform An address/data bit can be designated as either a “0” or “1” bit depending upon its waveform type. A one bit waveform consists of one pulse cycle, as shown in the following diagram. Normal Operation The devices encode and transmits the address/data information to a decoder upon receipt of a trigger signal. The transmission function of the series are enabled by the data inputs, which are the active high pins D0~D3 and B0~B1. The following diagram shows the transmission timing of these devices. tDW Bit“0” 3λ λ V D D D 0 ~ D 3 , B 0 ~ B 1 V S S 1 m s T y p . Bit“1” 3λ λ V D D D O U T Address/ Data bit V S S P ilo t C o d e A d d re s s /d a ta c o d e Note: 1. A “0” bit consists of a “high” pulse for 1λ and then a “low” pulse for 3λ. The transmission sequence is Pilot, Address, Data code. 2. A “1” bit consists of a “high” pulse for 3λ and then a “low” pulse for 1λ. D0~D3, B0~B1 > 1 code word < 1 pilot code Single-Bit Data Width 1 pilot code < Active < 1 code word There are 8 different one-bit data widths as shown in the following table. They are selected by the control pins BTS1 and BTS0. In the table “F” refers to a floating input level. DOUT 1 code word Transmission Timing Diagram Symbol tDW Parameter Single bit data width @315MHz Pin Condition BTS1/BTS0 HT6P4x7A 0/0 0.75 0/Floating 0.83 0/1 0.91 Floating/0 1.00 Floating/Floating 1.10 Floating/1 1.22 1/0 1.34 1/Floating 1.47 1/1 NC Unit ms — Note: 1. The BTS0 and BTS1 pins can be set either high, low or floating. 2. The BTS0 and BTS1 pins should never be both high as this may cause erroneous operation. 3. If there is an overlap bit time range then select the closest typical bit time. For example if the desired bit time is 1.06ms, choosing the 1.1ms setting is best. 4. For other frequencies, the bit time will be the ratio of 315/FREQ. For example, for a frequency of 433MHz, the bit time will be 1.47 x 315/433 = 1.07ms Rev. 1.00 5 December 19, 2014 HT6P427A/HT6P437A Synchronous Bit Waveform Code Word he synchronous bit waveform is 8-bits long and exhibits a high pulse for 1λfollowed by a low pulse for 31λ as shown in the following diagram. A group of code bits is called a code word. A code word consists of a pilot-code (Synchronous bit) followed by the address/data bits as shown in the following diagram. • HT6P427A Pilot-code A0~A19 D0~D3 A0~A23 D0~D3 • HT6P437A Pilot-code Application Circuits Rev. 1.00 6 December 19, 2014 HT6P427A/HT6P437A Package Information Note that the package information provided here is for consultation purposes only. As this information may be updated at regular intervals users are reminded to consult the Holtek website for the latest version of the package information. Additional supplementary information with regard to packaging is listed below. Click on the relevant section to be transferred to the relevant website page. • Further Package Information (include Outline Dimensions, Product Tape and Reel Specifications) • Packing Meterials Information • Carton information Rev. 1.00 7 December 19, 2014 HT6P427A/HT6P437A 16-pin NSOP (150mil) Outline Dimensions Symbol Dimensions in inch Min. Nom. Max. — A — 0.236 BSC B — 0.154 BSC — C 0.012 — 0.020 C' — 0.390 BSC — 0.069 D — — E — 0.050 BSC — F 0.004 — 0.010 G 0.016 — 0.050 H 0.004 — 0.010 α 0° ― 8° Symbol A Rev. 1.00 Dimensions in mm Min. Nom. Max. — 6.000 BSC — B — 3.900 BSC — C 0.31 — 0.51 C' — 9.900 BSC — D — — 1.75 E — 1.270 BSC — F 0.10 — 0.25 G 0.40 — 1.27 H 0.10 — 0.25 α 0° ― 8° 8 December 19, 2014 HT6P427A/HT6P437A Copyright© 2014 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. 1.00 9 December 19, 2014