Data Sheet PT8A985 Decoder for Fan Controller ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Features General Description • Three wind modes: Constant, Natural and Sleep- The PT8A985 can be used with Encoder PT8A982 speed to provide full control to an infrared remote control • Three speed grades for each wind: Strong, fan. The PT8A985 has a group of output pins Medium and Soft corresponding to all functions. The received signal is • Five front buttons: Speed, Wind, R/L, Timer and sampled, fault-tolerantly checked and decoded to On/Off control the infrared remote control fan. The fan’s IR • The Speed, Wind, R/L functions rememberable system has three wind modes, three wind grades and • Zero-cross trigger for TRAC protection two timing modes. The PT8A985 has non-summable • Special protection for wrong key-in timing mode in 1h, 2h, 4h and 8h if the A/N floats, • Two types of timing: summable and non-summable and summable timing mode in 0.5h, 1h, 2h and 4h if • LED indicator the A/N connects to GND. • Power on reset and LEDs lit for 2s The Motor starts or stops at the Zero-cross of the AC • The motor starts in strong wind power as an SYN input pin is used. The 50Hz AC • The Buzz works when received right signal timed pulse input to this pin synchronizes the L, M • Wide operation supply voltage: 3.5V to 5.5V and S outputs. In the Natural and Sleep modes, the • Two ways do the function: IR and buttons wind speed is programmable. • 32KHz external crystal • Low operation current There is an internal inverter in the PT8A985. By • Few external components needed adding a 32KHz crystal, an oscillator can be • Programmable according to customer requirement constructed. • Input I/Os adapt to most of IR Modules • Package: 20-pin DIP or SOIC Block Diagram SIB OSCI OSCO Timing Generator Oscillator Receiver Decoding Circuit L1 L2 L3 L4 L5 C1 C2 C3 Key Logic Control Output Circuit Scan Led Out S M L R/L BUZ SYN PT0058(05/02) 1 Ver:4 Data Sheet PT8A985 Decoder for Fan Controller ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Pin Configuration L R/L BUZ OSCI OSCO VCC SYN L1 L2 L3 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 M S SIB A/N GND C3 C2 C1 L5 L4 Top View Pin Description P in Na me Typ e 1 L O Low Speed Wind Output Pin 2 R/L O Rignt/Left Swing Output Pin 3 BUZ O Sound Output Pin 4, 5 OSCI, OSCO I, O 6 VCC P Power Supply 7 SYN I Cross Zero Detection and Trigger 8 L1 I/O Setting SPEED/OFF and LED Output Pin 9 L2 I/O Setting R/L and LED Output Pin 10 L3 I/O Setting Wind and LED Output Pin 11 L4 I/O Setting Timer and LED Output Pin 12 L5 I/O Setting On/Off Input Pin 13, 14, 15 C1, C2, C3 O 16 GND GND 17 A/N 18 SIB I Remote Control Signal Input Pin 19 S O Strong Wind Output Pin 20 M O Medium Wind Output Pin PT0058(05/02) Descr ip t ion Connected to 32kHz Crystal LED Scan Output Common Driver Pins Ground Connects to GND: Timer is summable, Floating: Timer is non-summable 2 Ver:4 Data Sheet PT8A985 Decoder for Fan Controller ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Absolute Maximum Ratings (Above which the useful life may be impaired. For user guidelines, not tested.) Note: Storage Temperature ........................................................ -25oC to +85oC Stresses greater than those listed under MAXIMUM Ambient Temperature with Power Applied ......................... 0oC to +70oC RATINGS may cause permanent damage to the Supply Voltage to Ground Potential (Inputs & VCC Only) ...... -0.5 to 6.0V device. This is a stress rating only and functional Supply Voltage to Ground Potential (Outputs & D/O Only) .. -0.5 to 6.0V operation of the device at these or any other condiDC Input Voltage .................................................................. -0.5 to 6.0V tions above those indicated in the operational secDC Output Current ........................................................................ 20mA tions of this specification is not implied. Exposure Power Dissipation ....................................................................... 500mW to absolute maximum rating conditions for extended periods may affect reliability. DC Electrical Characteristics Sym Descr ip t ion ICC Supply Current RPULL Internal Pull-up Resistor VIH Input High Voltage VIL Input Low Voltage P in Test C on d it ion Min Typ Output Unloaded Ma x Un it s 300 uA L1,L2,L3,L4,L5 120 180 240 A/N 80 120 160 kOhm OSCI V SYN, SIB 4.5 SYN, SIB IOH IOL 0.5 V OSCI L1, L2, L3, L4 VOH = 4.5V 9 BUZ VOH = 4.5V 6 S, M, L, R/L VOH = 4.5V 9 C1, C2, C3 * VOH = 4.5V - L1,L2,L3,L4 * VOL = 0.5V - BUZ VOL = 0.5V 6 S, M, L, R/L VOL = 0.5V 9 C1, C2, C3 VOL = 0.5V 12 Output High-Level Current Output Low-Level Current mA mA IIH Input High-Level Current SYN, SIB VIH = 5.0V -0.5 0.5 uA IIL Input Low-Level Current SYN, SIB VIL = 0V -0.5 0.5 uA 1.2 V Vclamp Clamp Voltage SYN VOSCO OSCO Output Level OSCO IL = 5mA 0.7** IH = -5mA -1.2 -0.7 Unloaded, OSCI is opened 2 2.5 V 3 V Notes: * C1,C2.C3 are NMOS Output Pins, L1,L2,L3,L4 and L5 are PMOS Output Pins. ** The reference is VCC VCC = 5.0V, TA = 25oC unless other otherwise specified. PT0058(05/02) 3 Ver:4 Data Sheet PT8A985 Decoder for Fan Controller ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| AC Electrical Characteristics Pa r a met er Descr ip t ion Test C on d it ion Min Typ Ma x Un it s fOSC Oscillator Frequency TA = 25oC tFUN Period of Function Code fOSC = 32768Hz 759.6 844 928.4 µs tSTA Start-Code Period fOSC = 32768Hz 1.519 1.688 1.856 ms The Alarm output voice time fOSC = 32768Hz 60 100 140 ms 60 100 140 ms tBUZZH tBUZZL The Alarm output interval fvoice Frequency of the Voice VCC 32768.0 fOSC = 32768Hz Hz 4096 Supply Range 3.5 5 Hz 5.5 V Note: VCC = 5.0V, TA = 25oC unless other otherwise specified. Latch up and ESD characteristics 1. Latch up test The reference: EIA/JESD78 standard 2. ESD Sensitivity test The reference: EIA/JESD22-A114-A HBM standard, over 2000V Bit Format for Received Signal W1 W1 = 840us 50% Duty W2 W2 = 1680us 25% Duty W1 is function code, W2 is start code. Word Format for Received Signal W2 W2 W2 W2 W1 W1 Start Code: 4 W2 W1 W1 Function Code: n x W1 1 Word W2 W2 W2 W2 W1 W1 W1 W1 W1 W1 W3 W3 is the end word. PT0058(05/02) 4 Ver:4 Data Sheet PT8A985 Decoder for Fan Controller ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Decoding Timing Click on any function button on PT8A982 Encode Output from PT8A982 1st Word Last Word 2nd Word 0 1 Function Codes 14 15 End Codes PT8A985P Decoding Output 6ms SYN Output from PT8A985 L, M, S, R/L Note : L, M, S start and stop at the rise time, R/L starts and stop at the rise or fall time. SYN Input Pin Circuit Encoding Input Format And Decoding Result Nu m b er of F u n ct ion C od es E r r or Ar ea F u n ct ion 12 ±1 On/Off 18 ±1 Speed 24 ±1 Timer 30 ±1 Wind 36 ±1 R/L VCC A 1 AC SYN 2 Vss Key Scanning and Sampling Timing 4ms 9ms C1 C2 P RE 1ms 0.5ms C P _K EY C3 Note: C1, C2,C3 are the Common Point. The PRE is the time that the key-button can be received and CP_KEY is the sampling time. PT0058(05/02) 5 Ver:4 Data Sheet PT8A985 Decoder for Fan Controller ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Connection with LED C3 C2 C1 ON/OFF L5 R17 10K L4 L R24 Sleep TIMER 4h L3 R6 R9 10K RE S2 1K 8h 2h WIN D 1h R10 10K L2 R7 1K L1 R8 1K M Natural R/L Normal Speed R11 10K S R12 10K Note: The LEDs work on the flash; The LED will be lit only when L is High and C is Low. Infrared Receiver Module Output Waveform VDD-1.0V 4-Start C odes n*F C ode 16*(4S+6F) N *(4S+n*F) IR Module Transmitting T ransm ission D ist ance L St andard T ransm it t er L 600us 600us B urst W ave C arrier frequency : F o= 38K H z VC C GND T on PT0058(05/02) T off 6 Ver:4 Data Sheet PT8A985 Decoder for Fan Controller ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| A Typical IR Module OPTO-Electrical Characteristics Sym Descr ip t ion L Test C on d it ion s Min Typ Transmission Range 8 12 VOH Output High Voltage 4.5 VOL Output Low Voltage tON ON pulse Width tOFF The burst wave shown in is transmitted by a standard transmitter Ma x Un it s m V 0.4 V 400 600 800 us OFF pulse Width 400 600 800 us fCSC Carrier Frequency 35 38 42 kHz VCC Supply Voltage 4.5 5 5.5 V ICC Supply Current 1.2 3 mA Note: VCC = 5.0V, TA = 25oC Alarm Output Waveform (The Voice Frequency is 4.0 ± 10% kHz) 100+ /-40ms 100+ /-40ms Note: When control signals are received, the control system produces a beep. When OFF signal is received or power is off, the control system produces two warning beeps. Pushing the front button for over 6-second, the Alarmer will beep four times. PT8A985P Receiver Front (The timer is 0.5h, 1h, 2h,4h) Strong Sleep Medium Natural Soft Normal 12345 12345 12345 12345 12345 12345 12345 12345 12345 SPEED WIND TIMER 4h 2h 1h 0.5h 12345 12345 12345 R/L 12345 12345 12345 ON/OFF PT8A985P Receiver Front (The timer is 1h, 2h,4h, 8h) Strong Medium Soft 12345 Natural Normal 12345 12345 12345 12345 12345 12345 SPEED WIND TIMER Note: 12345 12345 - Key Button, PT0058(05/02) Sleep 8h 4h 2h 1h 123456 123456 R/L 12345 12345 ON/OFF - LED 7 Ver:4 Data Sheet PT8A985 Decoder for Fan Controller ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| ing this key will alter the wind speed in the circular sequence: Soft - Medium - Strong - Off - Soft, and so on. Similarly the corresponding sequence of the WIND key is Constant - Natural - Sleep - Constant, etc. The TIMER key will alter the time in circular sequence of 1h, 2h, 4h, 8h and 0 if the A/N pin is floating, or in 0.5h, 1h, 1.5h, ... , 7.5h if the A/N pin connects to GND. The R/L key can toggle the fan between swing and nonswing with the fan ON. Shown below are the detailed SPEED and WIND function diagrams. Functional Description PT8A985 has two ways to input control signals: through the keypad of the control panel or through the infrared ray receiving module. The signals control five types of operation: SPEED, WIND, TIMER, R/L and ON/OFF. When control signals are received, the control system produces a beep. When the fan is on and the ON/OFF signal is received, the control system beeps two times and turns off the power. Pushing the SPEED key will start the fan with Soft Wind. Repeatedly push- Natural Wind Mode Programmed with Speed S tr o n g- N a tu ra l W in d S tr o n g M e d iu m S o ft t O ff 1 2 3 4 5 6 7 8 6 7 8 6 7 8 M e d iu m - N a tu r a l W in d S tr o n g M e d iu m S o ft O ff 1 2 3 4 5 S o ft-N a tu ra l W in d S tro n g M e d iu m S o ft O ff 1 2 3 4 5 Note: t=6s. Maximum is 16t programmable in ROM. PT0058(05/02) 8 Ver:4 Data Sheet PT8A985 Decoder for Fan Controller ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Sleep Wind Mode (T=0.5h) S tr o n g- S le e p M o d e S u p e r S tr o n g- N a tu r a l S tr o n g- N a tu r a l M e d iu m - N a tu r a l T S o f t- N a tu r a l S u p e r S o f t- N a tu r a l M e d iu m -S le e p M o d e S u p e r S tro n g-N a tu ra l S tro n g-N a tu ra l M e d iu m -N a tu ra l S o ft-N a tu ra l S u p e r S o ft-N a tu ra l S o f t- S le e p M o d e S u p e r S tr o n g- N a tu r a l S tr o n g- N a tu r a l M e d iu m - N a tu r a l S o f t- N a tu r a l S u p e r S o f t- N a tu r a l PT0058(05/02) 9 Ver:4 PT0058(05/02) POWER R4 220K R1 910K 10 T1 T2 T3 T4 M1 M2 VK1 511K C2 .82/250V C1 333/250V D2 4007 D1 4007 R16 750 R15 750 R14 750 R13 750 R5 220K R3 330/2W R2 330/2W VK2 241K PT8A985 Typical Application Circuit 470 C3 R22 4.3K 1 32K XTAL 10 9 8 7 6 5 4 3 2 M A/N SIB S PT8A985 L3 L2 L1 SYN Vcc L4 L5 C1 C2 C3 OSCO GND OSCI BUZ R/L L 20 11 12 13 14 15 16 17 18 19 M S R8 1K 8h/4h L R7 1K R6 1K R24 RES2 1N4148 BUZ ZD1 5.1V D3 Normal Natural 2h/1h Sleep 10U/16V C4 1h/0.5h 4h/2h C5 103 Speed R/L WIND TIMER ON/OFF S R12 10K R11 10K R10 10K R9 10K R17 10K INFRARED Data Sheet PT8A985 Decoder for Fan Controller ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Ver:4 Data Sheet PT8A985 Decoder for Fan Controller ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Notes Pericom Technology Inc. Email: [email protected] Web Site: www.pti.com.cn, www.pti-ic.com China: No. 20 Building, 3/F, 481 Guiping Road, Shanghai, 200233, China Tel: (86)-21-6485 0576 Fax: (86)-21-6485 2181 Asia Pacific: Unit 1517, 15/F, Chevalier Commercial Centre, 8 Wang Hoi Rd, Kowloon Bay, Hongkong Tel: (852)-2243 3660 Fax: (852)- 2243 3667 U.S.A.: 2380 Bering Drive, San Jose, California 95131, USA Tel: (1)-408-435 0800 Fax: (1)-408-435 1100 Pericom Technology Incorporation reserves the right to make changes to its products or specifications at any time, without notice, in order to improve design or performance and to supply the best possible product. Pericom Technology does not assume any responsibility for use of any circuitry described other than the circuitry embodied in Pericom Technology product. The company makes no representations that circuitry described herein is free from patent infringement or other rights, of Pericom Technology Incorporation. PT0058(05/02) 11 Ver:4