SC2128C-L33S

Silan Semiconductors REMOTE FAN CONTROL IC DESCRIPTION The SC2128C is a high performance electronic fan controller LSI, Speed control, off-timer, rhythm wind, sleep mode, head swing and/or light control are all built into a single chip. Indicator LED output, buzzer output, key control input, as well as remote control decoding circuitry are all provided to build a full function electronic fan with remote control capability having the highest performance with the least external components. Pin assignment and application circuit are optimized for easy PCB layout and cost saving for electronic fan application. SC2128C FEATURES * High performance CMOS Technology * Low power consumption * Optional independent light control * 90 seconds cycle/6 seconds per step(off step 3 seconds) rhythm wind pattern * Built-in remote control decoding circuitry with mask option custom code * Available in 16,18,20,22,24 pin package for none, one set or two sets of swing head and/or light control * Two sets of swing head and/or light control * Three operation modes: ordinary, rhythm and rhythm sleep. DIP-24-300-2.54 APPLICATIONS * Optimized for fan application * Suitable for heater fan, cooling fan, and other home appliances with remote control, timer and/or output level control PIN CONFIGURATION NC REMOTE VSS OSCI OSCO VDD OFF/BUZZ SPEED MODE 1 2 3 4 5 6 7 8 9 24 SO2 23 LO 22 MI 21 ST 20 LED1 SC2128C 19 LED2 18 LED3 17 COM 16 TIMER 15 SO1 14 LIT 13 LORD SW1 10 LIGHT 11 NC 12 HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD Rev: 1.1 2001.09.26 1 Silan Semiconductors ORDERING INFORMATION SC2128C SC2128C- X X X X S = Swing Head Output(s) Controlled by a Single Key (Mask Option) Swing Head Outputs Controlled by Double Keys (D can be D = Two omitted) 0 = No Swing head Output 1 = 1 Swing head Output 2 = 2 Swing head Outputs 3 = 1 Swing head & Light Control Outputs 4 = 2 Swing head & Light Control Outputs 2 = 1/2/4 Hour, Non-Accumulated Timer 3 = 1/2/4 Hour, Accumulated Timer 4 = 0.5/1/2/4 Hour, Non-Accumulated Timer 5 = 0.5/1/2/4 Hour, Accumulated Timer 8 = 1/2/4/8 Hour, Non-Accumulated Timer 9 = 1/2/4/8 Hour, Accumulated Timer D = Non-Memory Start-up & Non-Middle Wind Start-up (Mask Option) C = Non-Memory Start-up & Middle Wind Start-up L = Memory Start-up & Non-Middle Wind Start-up (Mask Option) M = Memory Start-up & Middle Wind Start-up Note: SC2128C Standard ICs: SC2128C-C41, SC2128C-C51, Other options are available upon request and require a minimum order Quantity. Please contact Silan or your local agent for details. BLOCK DIAGRAM VDD VSS OSCI OSCO OSC TIMING SPEED CONTROL LO MI ST REMOTE FILTER DECODER COM SPEED TIMER MODE SW1 SW2 OFF/MEMS/ BUZZ LIGHT KEY SENSE TIMER LED SCAN LED1 LED2 LED3 SO1 SWING/ LIGHT SO2 LIT MEMORY HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD Rev: 1.1 2001.09.26 2 Silan Semiconductors ABSOLUTE MAXIMUM RATINGS Characteristic Supply Voltage Input/Output Voltage Power Dissipation Operating Temperature Storage Temperature SC2128C Test Conditions -VDD - VSS VDD – VSS = 5.0 --- Symbol VDD VI, VO PD Topr Tstg Value 0 ~ 6.0 -0.3V ~ VDD+0.3V 500 -20 ~ +70 -40 ~ +125 Unit V V mW °C °C ELECTRICAL CHARACTERISTICS Parameter Supply Voltage Symbol VDD -- Test conditions Min 4.0 Typ 5.0 Max 6.0 Unit V VDD=5.0V, Oscillator stops. Stand-by Current Iq All output floating, All input fixed to VDD. Input High Level Voltage Input Low Level Voltage Drive Current (COM) Sink Current (COM) Drive Current(LED1, LED2, LED3) Sink Current(LED1, LED2, LED3) Drive Current (OFF/BUZZ) Sink Current (OFF/BUZZ) Sink Current (LO,MI,ST,SO1, SO2,LIT) Oscillation frequency Key Press Duration Remote Input Bit Duration VIH VIL IOH IOL IOH IOL IOH IOL IOL fOSC Tkey Tbit --VDD=5.0V, Vo=3.5V VDD=5.0V, Vo=1.5V VDD=5.0V, Vo=3.5V VDD=5.0V, Vo=1.5V VDD=5.0V, Vo=2.5V VDD=5.0V, Vo=2.5V VDD=5.0V, Vo=2.5V ---VDD-1.5 -15 -12 5 -4 1.5 -2 -6.5 -80 2.0 --21.5 -16.5 6.5 -5.7 3.0 -3.7 -16 32768 -2.5 -1.5 ---------3.0 V V mA mA mA mA mA mA mA Hz ms ms -134 200 µA HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD Rev: 1.1 2001.09.26 3 Silan Semiconductors PIN DESCRIPTION Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 SC2128C Function No connection Remote control sensor input Negative power supply Oscillator input Pin Oscillator output Pin Positive power supply OFF control key input, shared with buzzer output SPEED key control input MODE key control input Swing head 1 control key input Light control key input No connection Ordinary wind indicator LED output Light output Swing head 1 output TIMER key control input Indicator LED common output Indicator LED output Pin Indicator LED output Pin Indicator LED output Pin (Strong) Speed output Pin (Middle) Speed output Pin (Low) Speed output Pin Swing head 2 output -I -I O -- Symbol NC REMOTE VSS OSCI OSCO VDD OFF/BUZZ SPEED MODE SW1 LIGHT NC LORD LIT SO1 TIMER COM LED3 LED2 LED1 ST MI LO SO2 I/O I/O I I I I -O O O I O O O O O O O O FUNCTIONAL DESCRIPTION 1. CONTROL KEYS Up to six(6) function keys – SPEED, MODE, TIMER, SW1, LIGHT and OFF/MEMS – may be used on the control panel of fan to access SC2128C to its full versatility. OFF/BUZZ key input pin serves further as buzzer output BUZZ pin. All key inputs are internally pulled-high in SC2128C. SPEED key controls the fan speed. TIMER key adjusts off-timer. MODE key sets fan into various modes of operation. SW1 key control the head swing of fan. LIGHT key toggles the LIT output ON and OFF. OFF/BUZZ key resets the fan to idle state when fan is ON. LIT output is not affected by OFF key. HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD Rev: 1.1 2001.09.26 4 Silan Semiconductors 2. SPEED KEY SC2128C SPEED key is used to (1) turn on the fan (2) change speed of the fan. SLEEP key my turn on the fan from remote control handset. All the other key scan NOT turn on the fan. All the other keys, except LIGHT key, can NOT operate until fan is turned on. The diagram shows the state transition of SC2128C for successive pressing of SPEED key. MID Middle wind start-up optioned SP D EE Y KE LO=Z MI=L ST=Z SPEED KEY OFF LO=Z MI=Z ST=Z SPEED KEY MI start LO=Z MI=L ST=Z 2-3 sec, delay LOW LO=L MI=Z ST=Z Z=high impedence L=low voltage STR LO=Z MI=Z ST=L 3. TIMER KEY TIMER key is used to set time schedule after which SC2128C will automatically restore off state(off-timer). When the fan is on, pressing TIMER key sets up the off-timer. Each pressing of TIMER key increases the timer by one step. Each time increment step is determined by various timer options. Either 0.5 or 1 hour per step may be selected, and either 3 levels or 4 levels timer may be selected. Please see TIMER section for details. 4. MODE KEY MODE key is used to bring SC2128C around ORD (ordinary wind) mode, RTM (rhythm wind ) mode and RSL(rhythm sleep wind ) mode. In ORD mode, the wind speed is set by SPEED key and does not change as time passes. In RTM mode the wind speed cycles through three rhythm wind, patterns as set by the SPEED key. In RSL mode, however, the fan automatically steps down one level (strong to middle, middle to low) every 30 minutes and keeps in low wind until off-timer times out. Four modes of operation are described in details later. KE Y M O D E SPEED KEY OFF ORD RSL HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD Rev: 1.1 2001.09.26 5 MODE KEY E Y KE D EE SP Y KE RTM O M D Silan Semiconductors 5. SW1 KEY SW1 controls the output status of SO1 and SO2 outputs which in turn control the head swing of fan. Each pressing of SW1 key toggles SO1 and SO2 outputs as shown in the diagram right. SC2128C 1 SW KE Y SO1=L SO2=Z SW 1K EY Fan already ON SO1=Z SO2=Z Z=high impedence L=low voltage 1K SO1=Z SO2=L SW EY SO1=L SO2=L SW 1K EY 6. LIGHT KEY LIGHT key toggles LIT output on(L) and off(Z). LIT output can only be controlled with LIGHT key (from both panel and remote control) and SLEEP key (if available) on remote control handset. OFF key does NOT affect LIT output. LIT output is NOT affected by OFF key as well as off-timer times out. 7. OFF/BUZZ KEY OFF/BUZZ key functions differently depending on whether the fan is ON or OFF. It functions as OFF key when the fan is ON, and is used to bring SC2128C from any on state into off state. LIT output is NOT affected by OFF key. 8. INDICATOR LEDS Up to twelve(13) indicator LEDs may be constructed on the control panel of fan built with SC2128C. Six(6) LED sare constructed as 3x2 LED matrix formed by COM and LED1, LED2, LED3. The other six(6) LEDs are built in series with TRIAC outputs and the thirteenth LED is used as Ordinary Wind mode indicator. The diagrams show how the LED matrix is constructed. low VDD LO middle MI COM ST Tb2 LED3 LED2 SO2 LED1 LIT VSS -5V ORD LORD light Tb3 Tb0 Tb1 Rhythm Sleep SO1 Swing 2 Swing 1 strong SC2128C SC2128C HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD Rev: 1.1 2001.09.26 6 Silan Semiconductors option, timer step may be 0.5 hour or 1 hour as indicated in the diagram. SC2128C Tb0=0.5 hour b1=1 hour b2=2 hour b3=4 hour Tb0=1 hour b1=2 hour b2=4 hour b3=8 hour * Four LEDs (Tb0, Tb1, Tb2, Tb3) are used to indicate the off-timer period. Depending on the base timer step If SC2128C is selected with 4 hour timer option If SC2128C is selected with 8 hour timer option The time schedule is the sum of all ON LEDs. For example, if SC2128C is programmed with 1/2/4/8 hour accumulated timer option, and is Tb0 is ON, Tb1 is OFF, Tb2 is OFF, Tb3 is ON, then the schedule period is 9 hours (1 hr + 9 hr). * Rhythm LED , Sleep LED and Ordinary LED indicate SC2128C operation modes. Operation mode ORD (ordinary wind) RTM (rhythm wind) RSL (rhythm sleep wind) Rhythm LED OFF ON OFF Sleep LED OFF OFF ON Ordinary LED ON OFF OFF * Three LEDs – Low, Middle and Strong – are used to indicate the respective output status of LO, MI, ST output. LED being ON indicates output active (L). LED being OFF indicates output inactive (Z). Only one output among LO, MI and HI may be active at a specific time. * Swing1 LED, Swing2 LED and Light LED indicated respective output status of SO1, SO2, and LIT. 9. TIMER The external timer of SC2128C may be bonding optioned into six (6) configurations as shown. Each pressing of TIMER key will step the internal timer one step up. The actual sequence depends on the TIMER option selected. The following diagrams show the timer sequence for each TIMER option. TIMER automatically counts down as time passes by. The count down sequence reverses the key sequence and is also shown in the following diagrams. : 0.5, 1, 2, 4 hours non-accumulated : 1, 2, 4, 8 hours non-accumulated : 0.5, 1, 2, 4 hours accumulated : 1, 2, 4, 8 hours accumulated : 1, 2, 4 hours non-accumulated : 1, 2, 4 hours accumulated HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD Rev: 1.1 2001.09.26 7 Silan Semiconductors TIMER None 0.5hr ER TIM SC2128C TIMER TIMER TIMER TIMER TIMER TIMER 2+ 1 1hr TIMER 4+ 2 1hr 1hr TIMER 1hr 1hr TIMER 0.5 TIMER 0.5hr 0.5h r 1 TIME R None 1hr ER TIM 0.5 TIMER 1hr 2hr 1 TIME R None 1hr TIM ER 1 1hr 4+ 2+ 1 2 4 TIME R 4 2 4 2 (1) TIMER None 0.5hr TIM ER 2hr (2) TIMER TIMER TIMER 1+ 0.5 0.5hr TIMER 4+ 2+ 1 TIMER 4+ 2+ 0.5 0.5hr TIMER TIMER 2+ 0.5 0.5hr TIMER 4+ 2 0.5hr 0.5hr TIMER 0.5hr 4+ 1+ 0.5 2+ 1 0.5hr TIMER 4+ 1 0.5hr 0.5hr TIMER 2+ 1+ 0.5 TIMER TIMER 0.5hr 0.5hr 4hr 4+ 1 (6) TIMER TIMER 0.5 0.5hr 4+ 2+ 1+ 0.5 1 2 4 TIME R None 1hr TIM ER 1 1hr 2hr 2 TIME R 4+ 0.5 4 0.5hr 0.5hr (3) TIMER None 1hr TIM ER (5) TIMER TIMER TIMER TIMER 2+ 1 TIMER TIMER 4+ 1 4+ 2 1hr TIMER 8+ 2+ 1 TIMER 4+ 2+ 1 1 1hr 8+ 4+ 2+ 1 2 1hr TIMER 8+ 4+ 2 4 1hr 1hr TIMER 8+ 4 1hr 1hr 1hr 8 TIME R 1hr TIMER 8+ 2 1hr TIMER 1hr 1hr 8+ 4+ 1 TIMER 8+ 1 1hr 1hr (4) 10. RHYTHM WIND SC2128C features rhythm wind mode. It can be set into rhythm wind mode by pressing MODE key. Furthermore, there are three levels – strong, middle and low rhythm wind. Pressing SPEED key cycles SC2128C around the three levels, from low to middle, middle to strong, then strong to low. Initial rhythm wind level on entering RHYTHM wind mode is the same as the ordinary wind level while leaving ORDINARY wind mode and entering RHYTHM wind mode. The right diagram depicts the strong, middle and low rhythm wind patterns. ST MI LO t=0 Low rhythm wind pattern ST MI LO t=0 Strong rhythm wind pattern ST MI LO t=0 Middle rhythm wind pattern seconds t=90 seconds t=90 seconds t=90 HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD Rev: 1.1 2001.09.26 8 Silan Semiconductors 11. RHYTHM SLEEP WIND MODE Pressing MODE key in sleep wind mode brings SC2128C into rhythm sleep wind. In rhythm sleep wind mode, SC2128C outputs LOW, MIDDLE or STRONG rhythm wind pattern and automatically steps down one level every 30 minutes until it reaches low rhythm wind level. If no off-timer is set, SC2128C keeps in low rhythm wind output. Otherwise it restores off state when the off-timer times out. Strong rhythm wind Middle rhythm wind Low rhythm wind t=0 SC2128C Strong rhythm wind Middle rhythm wind Low rhythm wind t=0 t=0.5hr t=1.0hr timer timeout hours Strong rhythm wind Middle rhythm wind Low rhythm wind t=0 Strong rhythm sleep mode wind pattern hours t=0.5hr t=1.0hr timer timeout Middle rhythm sleep mode wind pattern hours t=0.5hr t=1.0hr timer timeout Low rhythm sleep mode wind pattern 12. BUZZER OUTPUT All valid key pressed except OFF/BUZZ initiates a 150ms duration 4kHz 50% duty cycle pulse train at OFF/BUZZ pin. OFF/BUZZ key function as OFF key if pressed when fan is in any on state. In this case, it does NOT initiate an output on BUZZ. Note that when OFF/BUZZ outputs the pulse train, key input is suppressed. That is, pressing OFF/BUZZ key when the buzzer is buzzing is NOT recognized by SC2128C. The diagram right shows the buzzer connection. VSS -5V VDD SC2128C OFF/BUZZ OFF/BUZZ key 13. REMOTE CONTROL DECODER SC2128C is designed to be used together with SC2268 infrared ray remote control encoder. Such combination allows up to 8 remote control keys – SPEED, MODE, TIMER, LIGHT, SLEEP, SW1, SW2, OFF/BUZZ – to be built on the remote control handset. 4 bits customer code, b3 ~ b6, is encoded by SC2268 and decoded by SC2128C in order to avoid remote control contention between devices. With SC2268, b3 is determined by bonding option; b4, b5 and b6 are determined by connecting respective c4, c5, c6 pin to VDD or VSS. With SC2128A, b3 and b6 can be mask programmed upon customer request and with NRE. The remote control signal coding scheme is fully compatible with SC2268. Some description follows. Please refer to specification of SC2268 for details. When SC2128C receives a remote control signal at its REMOTE pin, it decodes the received waveform into consecutive “0” bits and “1” bits. It first compares the received start word against its customer code. If and only if the start word matches the customer code, it then compares for two consecutive and matched code words. It then actuates the command according to the code words table shown later. Code frame start word 1st code word 2nd code word Start/Code word: b0 b1 b2 b3 b4 b5 b6 b7 "0" bit: "1" bit: Code bit: 0.625ms 1.875ms 2.5ms HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD Rev: 1.1 2001.09.26 9 Silan Semiconductors 14. CUSTOMER CODE SC2128C The default customer code of SC2128C is internally mask programmed to b0 ~ b7 = 00110011. Code bit b3 ~ b6 may be mask programmed to any value according to customer specification under terms and conditions agreed by SILAN. Suitable NRE is involved with customizing default customer code. Please refer to the following table. Mask Option Default Customer Code b0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 b1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 b2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Start word b3 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 b4 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 b5 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 b6 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 b7 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Mask Programmable Customer Code 15. REMOTE CONTROL KEYS Up to eight keys may be built on the remote control handset. Except SLEEP key, all keys functions the same as their panel counterparts. SLEEP key is not available on fan panel, and is only available on remote control handset. Pressing SLEEP key brings SC2128C to the output states as follows: SPEED MODE TIMER SWING LIGHT Middle wind RTM wind 4 hours or 8 hours SO1 ON, SO2 OFF LIT ON The remote transmission code words are defined in the following table. Code word Equivalent Key SPEED MODE TIMER LIGHT SLEEP SW2 SW1 OFF/MEMS b0 0 0 0 1 1 1 1 1 b1 0 1 1 0 0 0 1 1 b2 1 0 1 0 1 1 0 0 b3 1 1 0 1 0 1 0 1 b4 1 1 0 1 0 0 0 0 b5 0 0 0 1 1 0 1 0 b6 1 0 1 0 1 0 0 1 b7 0 0 0 0 0 1 1 0 SC2268 Corresponding Keys I1 I2 I3 I4 I5 I6 I7 I8 HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD Rev: 1.1 2001.09.26 10 Silan Semiconductors 16. VARIOUS OPTIONS SC2128C SC2128C accommodates many option possibilities. The options are summarized below: * Package Option: Either 16, 18, 20, 22, or 24 pin package. * Bonding option: ACC: T0.5: 3LT: NM: Accumulated or non-accumulated timer option. Timer scale, 0.5/1/2/4 hour timer or 1/2/4/8 timer option. Timer level option, either 4 levels or 3 levels. Disable memory mode. * Metal Option: b3 ~ b6: NMS: 2SW: Replaces default customer codes Disable middle wind start-up function Dependent/Independent swing head control option. HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD Rev: 1.1 2001.09.26 11 Silan Semiconductors APPLICATION CIRCUIT SC2128C AC SC2128C 1 2 3 IR MODULE -5V 9.1k¡ 47pf 32.768kHz NC REMOTE VSS OSCI OSCO VDD OFF/BUZZ SPEED MODE SW1 LIGHT NC SO2 LO MI ST LED1 LED2 LED3 COM TIMER SO1 LIT LORD 24 23 22 21 20 19 18 17 16 15 14 13 Swing2 220¡ Low 220¡ Middle 220¡ Strong 220¡ 4 5 6 7 8 9 10 11 12 Rhythm Tb0 Tb2 47pf Sleep Tb1 OFF SPEED MODE SW1 LIGHT Tb3 TIMER -5V Swing1 220¡ Light 220¡ 1k¡ Two Swing Head Controlled by SW1 200k¡ AC 22¡/2w VAR AC 2.5­f/250V 6.8V/1w FUSE 470­f 16V IN4004 1k¡ 0.1­f 2SA1015 -5V 10­f 16V Supply Circuit HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD Rev: 1.1 2001.09.26 12 Silan Semiconductors SC2268 IR TRANSMITTER APPLICATION CIRCUIT +3V SC2128C SPEED MODE TIMER LIGHT SLEEP SW2 SW1 OFF/MEMS 1 2 3 4 5 6 7 8 I1 I2 I3 I4 I5 I6 I7 I8 Vcc OSC1 OSC2 Tx OUT C4 C5 C6 Vss 16 15 14 13 12 11 10 9 220pf 455kHz 220pf A1015 10 IR LED C1815 1k SC2268 Note: SC2268 is recommended to be used with SC2128C. For this circuit, the “Start Word” is “00110011” PACKAGE OUTLINE DIP-24-300-2.54 2.54 6.40 1.50 34.50 7.62 15 degree 3.51 5.08 UNIT: mm 0.46 HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD Rev: 1.1 2001.09.26 13 3.30 0.25