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| EM32100 EM32100 8/10 8/10 DIGIT LCD DRIVER DIGIT LCD DRIVER GENERAL DESCRIPTION The EM32100 is a CMOS LCD display driver which can receive dialing data from dialer IC and display on the LCD panel. The EM32100 can also display real time clock, conversation time (stopwatch). FEATURES * * * * * * * * * * * Drive 8/10 digits LCD panel. Display dialing number. Display real time clock (RTC) in 12 hour or 24 hour format selectable. Stopwatch function for counting conversation time up to 59 minutes 59 seconds. Operating voltage: 1.5 VDC ( typical ) Operating current : 3 A (max.) LCD driver method : 1/3 duty , 1/2 bias. Internal voltage doubler circuit for drive LCD. Internal dialer interface. Use single colck 32768Hz crystal. Package in QFP 48 pins or chip form . APPLICATION FIELD Telephone and Digital display system. PIN ASSIGNMENTS 12 11 10 9 8 7 6 5 4 3 2 1 NC ENRTC 24/12 VSS XOUT NC XIN VDD HKS SDI MS2 MS1 NC VP VN VEE SEG24 SEG23 SEG22 SEG21 SEG20 SEG19 SEG18 SEG17 13 14 15 16 17 18 19 20 21 22 23 24 EM32100 48 47 46 45 44 43 42 41 40 39 38 37 NC F32H TESTI TEST2 COM3 COM2 COM1 SEG1 SEG2 SEG3 SEG4 SEG5 * This specification are subject to be changed without notice. SEG16 SEG15 SEG14 SEG13 SEG12 SEG11 SEG10 NC SEG9 SEG8 SEG7 SEG6 25 26 27 28 29 30 31 32 33 34 35 36 2.10.1999 1 EM32100 8/10 DIGIT LCD DRIVER FUNCTION BLOCK DIAGRAM COM1~3 SEG1~24 1/3 Duty 1/2 Bias LCD Driver Serial Data Samplin & Decoding Sampling Signal Generator XIN XOUT VDD VSS VP Power Supply Circuit VN Timing & Control Circuit ENRTC* 24/12 HKS* * MS2 MS1 F32HZ TESTI* SDI Serial Data Display Buffer RTC/STW Counter OSC. VEE PIN DESCRIPTIONS Symbol MS1 MS2 Function RTC (Real Time Clock ) manual setting pin 1 (internal pull up resistor typ. 150k,debounce time=15.6ms) RTC ( Real Time Clock ) manual setting pin 2 ; internal pull up resistor : idle ( On-Hook ) = 5M , normal ( Off- Hook ) = 150k ; at idle and normal state , debounce time=15.6ms , at test mode state , no debounce time ) Serial data input pin ( internal pull up resistor = 5 M) Hook switch status input pin. ( This pin "High",On-Hook ; "Low",Off-Hook ) Power supply pin Crystal input and output pins(crystal=32768Hz) Power supply pin RTC display 24 or 12 hours format select pin.(This pin "high",24 hours form;"low",12 hours form,input pin) RTC enable or disable detect pin. ( This pin detect "high", RTC disable; "low" , RTC enable , input pin ) Voltage doubler circuit for LCD driver ( DC-DC frequency conversion=1024Hz ) LCD panel driver segment output pins LCD panel driver common output pins ( Frame Frequency= 34.13 Hz). No connection , reserve for testing Enter test mode detect pin Signal 32 Hz output for testing ,NMOS open drain structure 2.10.1999 2 SDI HKS VDD XIN,XOUT VSS 24/12 ENRTC VEE,VP,VN SEG1~SEG24 COM1~COM3 TEST2 TESTI F32H * This specification are subject to be changed without notice. EM32100 8/10 DIGIT LCD DRIVER The relationship between ENRTC and EM32100 system LCD display method is as follows: ON-HOOK (HKS="High") blank RTC OFF-HOOK(HKS="Low") dialing number STW dialing number STW RTC ENRTC="High" ENRTC="Low" LCD Panel Description COM3 COM2 COM1 SEG24 9a 8a 10a SEG16 7f 7e 7d SEG8 4b 4g 4c SEG23 10f 10e 10d SEG15 7b 7g 7c SEG7 3f 3e 3d SEG22 10b 10g 10c SEG14 6f 6e 6d SEG6 3b 3g 3c SEG21 9f 9e 9d SEG13 6b 6g 6c SEG5 2f 2e 2d SEG20 9b 9g 9c SEG12 5f 5e 5d SEG4 2b 2g 2c SEG19 8f 8e 8d SEG11 5b 5g 5c SEG3 1f 1e 1d SEG18 8b 8g 8c SEG10 3a 2a 4a SEG2 1b 1g 1c SEG17 6a 5a 7a SEG9 4f 4e 4d SEG1 AM PM 1a COM3 COM2 COM1 COM3 COM2 COM1 * This specification are subject to be changed without notice. 2.10.1999 3 EM32100 8/10 DIGIT LCD DRIVER Serial Data Interface When the EM32100 senses the falling edge of the Start bit, it will sample subsequent bits in the middle of each bit. The received bit will then be assembled and decoded, and corresponding pattern will be displayed on LCD panel. The serial data format is as follows: 1 0 Start bit Bit0 Bit1 Bit2 Bit3 Data bits Bit4 Bit5 1 0 Stop bit The frequence of every bit is 256Hz ( about 3.9 ms) There are two categories of dialing data, and representation of serial data is as the following: * This specification are subject to be changed without notice. 2.10.1999 4 EM32100 8/10 DIGIT LCD DRIVER (b5b4 = 00) Digit key Key 1 2 3 4 5 6 7 8 9 0 * # P PT b3b2b1b0 0001 0010 0011 0100 0101 0110 0111 1000 1001 1010 1011 1100 1101 1110 Display 1 2 3 4 5 6 7 8 9 0 P (b5b4 = 10 ) function key Key F b3b2b1b0 1111 Display Note: 1. Flash key will be treated as "clear LCD panel" command. 2. Any invalid data will be ignored by the EM32100. FUNCTION DESCRIPTION Dialing dispaly The serial data received by SDI pin of EM32100 will be decoded and shown on LCD panel. Display format is as follows: Off-Hook state mode: 1 Start 2 Reset STW T 3 STW Display T 4 12 T 13 F 21 HKS = 1? F 5 T Start Tim er HK S = 0 F 6 Sec. Expire? F 6 Data In? T 14 MS2 = 0? F 7 Data Valid? T 15 F T F MS1 = 0 T 8 Display Dialing No. 16 Start Timer 17 24 Display RTC HKS = 1? 9 T RTC Mode HKS = 1? F 10 T F 18 6 Sec. Expire? T 27 T Data in? F T MS 1= 0 ? F F 11 F Data Valid? T MS1 = 0? F T MS 2 = 0 ? T MS2 = 0 ? 19 T F F F Data In? T 20 F Data V alid? T * This specification are subject to be changed without notice. 2.10.1999 5 EM32100 8/10 DIGIT LCD DRIVER RTC (Real time clock) display 12 hours format: 24 hours format: * This specification are subject to be changed without notice. 2.10.1999 6 EM32100 8/10 DIGIT LCD DRIVER Setting RTC With the HKS pin at "high", RTC can be set up by operating MS1 and MS2 pins as described as in the following: 1.In on-Hook state, press MS1, hour digit will flash, 2.Press MS2 to count up data. 3.Press MS1 once again, move to minute digit, digit flash, and reset second. 4.Press MS2 to count up minute digit. 5.Press MS1 again to finish RTC set up. 1 Start 2 RTC Display 10 3 Stop W atch Mo de T HKS= 0? F 4 M S1 = L o? T 5 F Hour Flash F 6 T HKS= 0? F 7 8 9 MS1 = Lo? F M S2 = Lo? T Ho ur +1 T Minute Flash and reset second F 6 5 T H K S=0 ? F 7 8 9 M S1 = L o? F M S2 = L o? T Minute +1 T * This specification are subject to be changed without notice. 2.10.1999 7 EM32100 8/10 DIGIT LCD DRIVER RTC display and STW reset at Off-hook state 1.When at On-hook state,operating MS1 and MS2 can setup RTC. 2.When at Off-hook state,operating MS1 and MS2 can display RTC and clear STW. Describe as following table: HKS="high" Select RTC setup position Count up hour or minute data HKS="low" Toggle display RTC/STW Reset STW MS1 MS2 Testing operating The F32HZ pin is a 32 Hertz clock source. This pin is intended to support LCD module testing in production line in the following two ways: 1. F32HZ can be connected to MS2 pin and, by operating the MS1 pin, can be used to test RTC setting function. 2.At off-HOOK state; In the TEST mode (the TEST pin is at "Low" level), the SDI pin sampling signal frequency is 32 Hz. F32HZ pin can be connected to SDI pin and with each reception of SDI data of "0" key, the LCD will display "1", "2", ..., "9", *, #, P,PT with each digit shifted left sequentially. Then the LCD panel goes blank, AM,PM goes on, and finally all patterns go on. And this sequence will repeat again. F32HZ SDI 1 0 Start bit * 0 Bit 0 0 1 1 Bit 1 Bit 2 Bit 3 Data bits 0 Bit 4 1 Bit 5 0 1 Stop bit After entering test mode and 6 digits of "0" are received, the LCD panel is as follows: * Then 8 more digits of "0" are received, the LCD panel is as follows: * Then the LCD panel will go blank. * This specification are subject to be changed without notice. 2.10.1999 8 EM32100 8/10 DIGIT LCD DRIVER * Turn on "AM"indicator AM * Then turn on "PM"indicator PM PM * Finally all patterns are turned on. AM PM * Then the sequence will repeat all over again. ABSOLUTE MAXIMUM RATINGS Items Supply voltage Input voltage Output voltage Output current Power dissipation Operating temperature Storage temperature Sym. VDD VIN VO IO PD TOPR TSTR Condition Rating - 0.5V to 1.5V - 0.5V to VDD+0.5V - 0.5V to VEE+0.5V -0.5 V to 3V 3.2 mA 300 mW 0oC to 50oC -55oC to 125oC Except open-drain Open-drain Others TOPR = 50oC RECOMMENDED OPERATING CONDITIONS 1. Supply voltage at 1.5V D.C. 2. Operation frequency fosc : 32768 Hz. * This specification are subject to be changed without notice. 2.10.1999 9 EM32100 8/10 DIGIT LCD DRIVER DC AND AC ELECTRICAL CHARACTERISTICS (fosc=32768 Hz,VDD =1.5V) Parameter Operating voltage Operating current (no load) Power on crystal start oscillation voltage Input voltage Standby current (ENRTC=H) Input pins pull-up resistor (MS1, TestI pins) MS2 pin input resistance SDI pin input resistance SDI input data every bit time Oscillator frequency Oscillator start time Common/Segment pins Source curent Sink current F32HZ pin sink current HKS, MS1, TESTI, MS2 (not at test mode), input pin debouce time IOH IOL IS Tdb VO=VEE-0.5V VO=0.5 VO=0.5V VO=0.5V 6 6 0.2 0.5 15.6 A A mA mS VSTART VIH VIL ISTBY RI RI RI TBIT fosc. TSTART VDD=1.45 HKS=1, VI=VSS HKS=0, VI=VSS VIN=VSS 1.3 VDD-0.3 VSS 3.8 1.5 150 5 150 5 3.9 32768 1.8 VDD VSS+0.3 1 4.1 2 V V V A K M K M mS Hz Sec. Sym. VDD VEE IDD Condition Min. 1.2 2.4 Typ. 1.5 3 1.5 Max. 1.8 3.6 3 Unit V V A * This specification are subject to be changed without notice. 2.10.1999 10 APPLICATION CIRCUIT 8/10 Digits LCD Pannel 220k 220k 32 1 C945 2 DIODE 1 2 DIODE 1 DIODE 2 1 20p 32768Hz 20p 47k 100k 2 3 C945 1 1.5V SDO HKS HDO VSS HFO 1 2 3 4 5 6 7 8 9 10 11 12 VDD 200k MS1 MS2 SD1 HKS VDD XIN NC XOUT VSS 24/12 ENRTC NC * This specification are subject to be changed without notice. SEG6 SEG7 SEG8 SEG9 NC SEG10 SEG11 SEG12 SEG13 SEG14 SEG15 SEG16 36 35 34 33 32 31 30 29 28 27 26 25 EM32100 1 100k 2 3 37 38 39 40 41 42 43 44 45 46 47 48 SEG5 SEG4 SEG3 SEG2 SEG1 COM1 COM2 COM3 TEST2 TEST1 F32H NC SEG17 SEG18 SEG19 SEG20 SEG21 SEG22 SEG23 SEG24 VEE VN VP NC 24 23 22 21 20 19 18 17 16 15 14 13 .1 .1 VCC 8/10 DIGIT LCD DRIVER 2.10.1999 EM32100 11 EM32100 8/10 DIGIT LCD DRIVER PAD DIAGRAM ENRTC 24/12 XOUT HKS VDD MS2 2 MS1 1 47 46 16 17 18 19 20 21 22 23 24 (0,0) 45 44 43 42 41 40 39 38 37 VSS XIN SDI VP VN VEE SEG24 SEG23 SEG22 SEG21 SEG20 SEG19 SEG18 SEG17 14 15 11 10 9 8 6 5 4 3 F32H TESTI TEST2 COM3 COM2 COM1 SEG1 SEG2 SEG3 SEG4 SEG5 EM32100 25 SEG16 26 SEG15 27 SEG14 28 SEG13 29 SEG12 30 SEG11 31 SEG10 33 SEG9 34 SEG8 35 SEG7 36 SEG6 Chip Size : 2230 x 2480 m Pad No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Symbol MS1 MS2 SDI HKS VDD XIN XOUT VSS 24/12 ENRTC X 712.8 561.6 412.2 261.0 103.5 -59.5 -209.8 -371.8 -523.9 -673.3 Y 992.2 992.2 992.2 992.2 1012.0 992.2 1006.2 1006.2 992.2 992.2 VP VN VEE SEG24 SEG23 SEG22 SEG21 -917.2 -917.2 -931.2 -949.2 -949.2 -949.2 -949.2 1033.6 884.2 733.3 552.1 371.7 191.3 11.0 2.10.1999 12 * This specification are subject to be changed without notice. EM32100 8/10 DIGIT LCD DRIVER Pad No. 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 Symbol SEG20 SEG19 SEG18 SEG17 SEG16 SEG15 SEG14 SEG13 SEG12 SEG11 SEG10 SEG9 SEG8 SEG7 SEG6 SEG5 SEG4 SEG3 SEG2 SEG1 COM1 COM2 COM3 TEST2 TESTI F32H X -949.2 -949.2 -949.2 -949.2 -895.7 -715.3 -535.0 -354.6 -174.2 6.1 186.5 366.8 547.2 727.6 907.9 949.1 949.1 949.1 949.1 949.1 917.1 917.1 917.1 903.1 903.1 903.1 Y -169.4 -349.7 -530.1 -710.5 -1074.2 -1074.2 -1074.2 -1074.2 -1074.2 -1074.2 -1074.2 -1074.2 -1074.2 -1074.2 -1074.2 -723.1 -542.7 -362.3 -182.0 -1.6 237.0 388.2 539.4 695.6 845.0 996.2 * This specification are subject to be changed without notice. 2.10.1999 13 |
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