ES51961 3 3/4 MANU DMM Features Description •3 3/4 digits manual and bargraph The ES51961 is a 3 3/4 digits and bargraph LCD display measurement system which combines integrated analog-to-digital converter (ADC), frequency counter, logic level tester and OP amplifier, which is operated with 3V DC power supply. The ES51961 is suited to voltage, current, resistance, diode, continuity, temperature, logic probe and frequency measurement to 400 MHz. The frequency counter can automatically adjust its range to match the input frequency or manual setting, over six ranges selectable. The logic level probe permits ES51961 to function as a logic probe and display logic high voltage level on the LCD display and turn on a piezoelectric buzzer. The other functions are provided for MAX and MIN holding, data holding, peak data holding, relative data, low battery detection, backlight, zoom, reset, range, auto-power-off , re-power-on circuit and RS232 data output. display •Multiple function system •Logic probe, logic high level 4.0V, 2.4V, 1.5V selectable, 20 MHz •Analog to digital converter •Frequency counter (400 MHz) •OP amplifier •Full scale range change by ×2, ×10, ×20, ÷ 5, ÷ 10 •Peak hold, catch the PMAX and PMIN (<10 us) •Data hold, MAX/MIN hold, Relative data function •ZOOM function of bargraph •Overrange outputs, can be controlled by RANGE pin •PH1~PH4 for capacitor measurement •RS232 •Low battery detect for 3V/9V battery •Crystal or on chip RC oscillator •Auto-power-off then hold the final data and re-power-on function •Reset function •Back light function •Voltage reference for resistor measurement •Point setting, bargraph disable •On chip buzzer driver •LCD segment check •3V DC power supply •100 Pin flat-package 1 2006/1/24 ES51961 3 3/4 MANU DMM Absolute Maximum Ratings Characteristics Supply Voltage (V- to AGND) Analog Input Voltage Digital Input Power Dissipation,Flat Package Operating Temperature Storage Temperature Ratings -4V V+ to VV- to DGND 500mW 0℃ to 70℃ -40℃ to 125℃ Electrical Characteristics TA=25℃, V- = -3V Symbol Parameter VPower Supply Idd Operating Supply Current Iss REV Rollover Error (Voltage x 1 ) REB Rollover Error (Bargraph) NLV Nonlinearity (Voltage x 1 ) NLB Nonlinearity (Bargraph) Input Leakage Internal Low Battery Flag Voltage (for 3V battery) Zero Input Reading V12 Reference Voltage V05 Reference Voltage Test Condition Normal Power On Auto-power-off Min. -3.5 - Typ. Max. unit -3.0 -2.2 V 1.3 2.0 mA 5 10 uA ± 0.1 ﹪F.S. 1M input Resistor - - ± 0.5 ﹪F.S. - - ± 0.1 ﹪F.S. Best Case Straight Line - - ± 0.5 ﹪F.S. V- to AGND -2.5 1 -2.3 -000 -1.3 000 -1.2 1MΩ Input Resistor 100KΩ Between V12 and AGND 100KΩ Between V05 and AGND -3.5≦V-≦-2.2 pA V +000 count -1.1 V -0.57 -0.50 -0.43 LCD Drive Voltage, 2.9 ANNUNC Counter Time Base Period fosc=4MHz Internal Pull High to 0V BKLIT,RANGE,SET, Current DP1,DP2,BDIS, BUZIN,XTAL,RESET, FC1,FC2,FC3,M2, M10,D10,ZOOM, PEAK,REL,MAX/MIN HOLD (which is connected to V-) 2 10 -2.1 V 3.2 3.5 V 1 - Sec uA 1.2 2006/1/24 ES51961 3 3/4 MANU DMM Electrical Characteristics (cont.) TCRF VLL VLH1 VLH2 VLH3 Reference Voltage Temperature Coefficient Buzzer frequency LCD drive frequency Logic low reference voltage Logic high reference voltage 100KΩ Between V12 and AGND 0℃＜TA＜70℃ Fosc = 4M HZ Logic test DC Logic test DC Maximum and minimum 使用 10nF 聚㆚酯薄膜 peak value accuracy 電容(polyester, Mylar) (10 uS) - 50 - ppm/ ℃ 2.5 78 0.8 KHZ HZ V 4.0 2.4 1.5 ±2% ±10 V V V F.S. count Pin Description Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Symbol Type Description AGND G Analog ground. AGND G Analog ground. V+ P Positive supply voltage, output of on-chip DC-DC converter. V+ P Positive supply voltage, output of on-chip DC-DC converter. ZH O Output to RC filter for ZOOM mode ZL I Input from RC filter for ZOOM mode CH+ I/O High speed positive connection for reference capacitor. CHI/O High speed negative connection for reference capacitor. CIH O High speed integrator output. Connected to integration capacitor. BUFHD10 O Integration resistor (1 MΩ) connection for high speed buffer ÷ 10 output. BUFH O Integration resistor (100 kΩ) connection for high speed buffer output. BUFHM10 O Integration resistor (10 kΩ) connection for high speed buffer ×10 output. CAZH O High speed auto-zero capacitor connection CL+ I/O High resolution positive connection for reference capacitor. CLI/O High resolution negative connection for reference capacitor. CIL O High resolution integrator output. Connected to integration capacitor. CAZL O High resolution auto-zero capacitor connection. BUFLD10 O Integration resistor (1 MΩ) connection for high resolution buffer ÷ 10 output. BUFL O Integration resistor (100 kΩ) connection for high resolution buffer output. BUFLM10 O Integration resistor (10 kΩ) connection for high resolution buffer ×10 output. 3 2006/1/24 ES51961 3 3/4 MANU DMM Pin 21 22 23 24 25 26 27 28 29 30 Symbol V05 V12 REFLO REFHI VIN+ VINPMAX PMIN OP+ OP31 OPO 32 33 34 35 OR PKIN BKLIT SLEEP Type O O I I I I I/O I/O I I O O I I O 36 INT 37 RANGE O I 38 39 40 41 42 43 44 SET MP DP1 DP2 FREQ BDIS ANNUNC I I I I I I O 45 | 67 68 69 70 71 72 73 74 75 76 SEG23 | SEG01 BP1 BP2 BP3 BP4 PH1 PH2 PH3 PH4 BUZOUT O O O O O O O O O O O Description Reference voltage output -0.5V to AGND for resistor measurement. Reference voltage output -1.2V to AGND. Low differential reference input connection High differential reference input connection High analog input signal connection. Low analog input signal connection. Maximum peak hold output. Minimum peak hold output. OP + terminal input. OP – terminal input. OP output. If this OP is not used, let OPO saturate to V+ can save power. For example, let OP+=0V and OP-=-3V. Overrange output. It could be controlled by RANGE pin. PEAK HOLD ( v.s. AGND ) or Logic Probe ( v.s. V- ) input pin . Back light control pin. Pulse low to make this function active. When auto-power-off happen, this pin output will change from V+ to V-. If re-power-on happen, the output will change from V- to V+. Integration cycle output (100 ms). Semiauto/manual mode and manual range selecting. Pulse low to make this function active. Input to set serial data output. Pulse low to make this function active. Ranges setting for MAX/MIN or PEAK mode. Decimal point control for voltage measurements. Decimal point control for voltage measurements. Frequency counter input, biased to 1/2 V- by IC internal circuit. When connected to V-, bargraph will be disabled (voltage mode). Square-wave output at the backplane frequency, synchronized to BP1. ANNUNC can be used to control display annunciator. Connecting a LCD segment to ANNUNC will turn it on; connecting a LCD segment to its backplane will turn it off. LCD Segment line 23. | LCD Segment line 01. LCD Backplane 1. LCD Backplane 2. LCD Backplane 3. LCD Backplane 4. Phase1 output, for capacitor measurement. Phase2 output, for capacitor measurement. Phase3 output, for capacitor measurement. Phase4 output, for capacitor measurement. Buzzer output. Audio frequency (2.5 KHz) output which drives a piezoelectric buzzer. 4 2006/1/24 ES51961 3 3/4 MANU DMM Pin Symbol 77 BUZIN Type Description I Buzzer control input. When connected to V-, turns the buzzer on. (2.5 KHz continuity signal) 78 OSC2 O Crystal oscillator (output) connection. 79 OSC1 I Crystal oscillator (input) connection. 80 XTAL I When unconnected or connected to DGND, the oscillator frequency is generated by external crystal. When connected to V-, the frequency is decided by internal RC oscillator. 81 RESET I Pulse low to clear the push function and counter. 82 FC1 I Switch 1 for function selection. 83 FC2 I Switch 2 for function selection. 84 FC3 I Switch 3 for function selection. 85 M2 I When connected to V-, the integration full voltage will be 200mV instead of 400mV. 86 M10 I When connected to V-,the integration full voltage will be 40mV instead of 400mV. 87 D10 I When connected to V-, the integration full voltage will be 4V instead of 400mV, and the absolute value of input voltage must ≤2V. 88 ZOOM I Zoom function select and Logic function setting (buzzer on state). 89 PEAK I Peak hold control pin, pulse low can make this function active. 90 REL I Relative control pin. Pulse low to make this function active. 91 MAX/MIN I Pulse low to make this function active. 92 HOLD I Pulse low to make this function active. 93 BKOUT O If BKLIT pin is pushed, this pin output will change from V- to V+ for 60 sec then returned to V- again, the driving current is about 1 mA. 94 SDO O RS232 output pin. 95 C+ O Positive capacitor connection for on-chip DC-DC converter. 96 CO Negative capacitor connection for on-chip DC-DC converter. 97 LBAT9 I Low battery voltage setting. If used 3V battery, connected this pin to AGND, the default low battery voltage will be -2.3V. For 9V battery power, if this pin input is smaller than V12 (-1.2V), the LCD annunciator “BATT” will be displayed. 98 VP Negative supply voltage. Connecting to battery negative terminal. 99 VP Negative supply voltage. Connecting to battery negative terminal. 100 DGND G Digital ground, connected to battery positive terminal. *Type: I=Input, O=Output, P=Power, G=Ground 5 2006/1/24 ES51961 3 3/4 MANU DMM Pin Configuration M A R X P Z E / F F F S MR E O D M I E AO 1 1 MC C C E N L KM 0 0 2 3 2 1 T B L K H B D S O O A G N V VT C C D U L D - - 9 - + O T D 100 AGND AGND V+ V+ ZH ZL CH+ CHCIH BUFHD10 BUFH BUFHM10 CAZH CL+ CLCIL CAZL CZAL BUFLD10 BUFL BUFLM10 V05 V12 REFLO REFHI VIN+ VINP P OP+ OP- 90 95 85 80 5 75 10 70 15 65 20 60 25 55 MAX MIN 30 35 OO P B P R K K I L O N I T S I L N E T E P 40 R S M DD A E P P P N T 1 2 G E 6 50 45 F R E Q B D I S A N N U N C S E G 2 3 S E G 2 2 S E G 2 1 S E G 2 0 S E G 1 9 XTAL OSC1 OSC2 BUZIN BUZOUT PH4 PH3 PH2 PH1 BP4 BP3 BP2 BP1 SEG1 SEG2 SEG3 SEG4 SEG5 SEG6 SEG7 SEG8 SEG9 SEG10 SEG11 SEG12 SEG13 SEG14 SEG15 SEG16 SEG17 S E G 1 8 2006/1/24 ES51961 3 3/4 MANU DMM Operation Mode Switch Description Measurement mode are depend on the logic levels of FC1, FC2, FC3. FC1 FC2 FC3 Mode Overflow Beep PEAK ZOOM BDIS 1 1 1 Volt1 (*1) O O O O 1 1 0 Volt2 O X O O 1 0 1 Volt3 X O O O 1 0 0 Volt4 X (*2) O O 0 1 1 Continuity X X X X 0 1 0 Frequency (*3) X X X X 0 0 0 Logic (*4) X X (*5) X 0 0 1 Diode X X X X *1: The LCD will show "OL" if reading is over 2000 counts if turns D10 function on. *2: If PEAK connects to V-, the sign annunciator "-" will not display. *3: The range can be changed by RANGE pin. *4: The logic high level reference voltage level can be changed by RANGE pin. *5: This pin is used to change the voltage level of buzzer on. Analog Section The ES51961 design incorporates “ZI”, “AZ”, “INT”, “DINT” four phases which is a dual slope A/D converter. The ADC system including high speed and high resolution two parts. Its timing setting is as follow: Voltage: Mode High Resolution ZI 100m sec AZ 150m sec INT 100m sec DINT 400m sec High Speed 20m sec 5m sec 10m sec 40m sec Voltage+M2: Mode High Resolution ZI 100m sec AZ 150m sec INT 100m sec DINT 200m sec High Speed 20m sec 5m sec 10m sec 20m sec 7 2006/1/24 ES51961 3 3/4 MANU DMM Voltage+PEAK: Mode ZI AZ INT DINT High Resolution 100m sec 150m sec 100m sec 500m sec High Speed 20m sec 5m sec 10m sec 50m sec Voltage+PEAK+M2: Mode ZI AZ INT DINT High Resolution 100m sec 150m sec 100m sec 250m sec High Speed 20m sec 5m sec 10m sec 25m sec The relation between the scale range and Bar meaning Scale Enabled pin Input full range Normal mode Bar meaning 400mV 10mV ×1 Default or M10 & D10 40mV 1mV ×10 M10 M2 200mV 5mV ×2 20mV 0.5mV ×20 M10 &M2 2000mV 100mV ÷ 10 D10 2000mV 50mV ÷ 5 D10 & M2 Zoom mode Bar meaning 1mV 1mV 0.5mV 0.5mV 10mV 5mV * If M2, M10, D10 is changed under MP="H", the original enabled function (ex: HOLD, MAX/MIN, REL, PEAK) and the input data will be reset, but the OR output will not be changed. On the contrary, when MP="L", see the explication of MP and OR at page 15 please. * When M2, M10, or D10 is changed, we must recalibrate if we will use PEAK function again. LOGIC Probe (1)Logic State & High Voltage Level & Buzzer on Level There are three kind of independent LOGIC high level, 4.0V, 2.4V and 1.5V (changed by RANGE pin), and buzzer on "H", "-" and "L" level (changed by ZOOM pin) can be selected individually. The Logic low level is always 0.8V and the response frequency is 20MHz. 8 2006/1/24 ES51961 3 3/4 MANU DMM present LOGIC state LOGIC high level setting buzzer on level The default LOGIC mode panel LOGIC probe input high should connect to PKIN pin, the LOGIC probe input low should connect to V- pin (not VIN- pin), so the maximum voltage difference between LOGIC high & low can be 6V. Example: The above panel means now is logic high (the input > 4.0V) and the buzzer turn on. The above panel means now is logic unknown (the input between 0.8V~2.4V) and once the LOGIC level change to high (>2.4V), the buzzer will turn on. 9 2006/1/24 ES51961 3 3/4 MANU DMM The above panel means now is logic high (the input > 1.5V) and once the LOGIC level change to low (<0.8V), the buzzer will turn on . The above panel means now is logic low (the input<0.8V) and once the LOGIC level change to unknown (0.8V~4.0V), the buzzer will turn on . (2) The relation between the input and LCD annunciator 0.1 us Hi Lo <1> Pulse low input 300 ms 0.1 us Hi Lo <2> Pulse high input 300 mS 600 ms 600 ms <3> Period input 300 ms 10 Hi Lo 300 ms 2006/1/24 ES51961 3 3/4 MANU DMM 0.1 us Hi Lo <4> Period input(10M) VH(4.0,2.4,1.5V) <5> Unknow VL(0.8V) input 0.5~1 ms 300 ms 300 ms Frequency Counter The timebase of ES51961 is derived by a crystal or internal RC clock oscillator. The timebase of counter is : Tcount = 4,000,000 Fosc Thus, the counter will operate with a 1 second timebase when a 4MHz crystal oscillator is used. For accurate frequency measurement, a crystal oscillator is recommended. The frequency counter can automatically select the proper range. Autorange operation extends over five decades from 1 Hz to 399.9 MHz. Range FR1 FR2 FR3 FR4 FR5 FR6 Full Scale 3.999 KHZ 39.99 KHZ 399.9 KHZ 3.999 MHZ 39.99 MHZ 399.9 MHZ 11 2006/1/24 ES51961 3 3/4 MANU DMM Continuity If the input voltage (VIN+~VIN-) make the bargraph number ≤3, a 2.5 KHz signal will come out from BUZOUT pin. Diode If the input voltage (VIN+~VIN-) high resolution counts ≥2000, the LCD will display “OL” and no overflow beep exist. If the bargraph number ≤3, a 2.5 KHz signal will come out from BUZOUT pin. Push mode The relation between HOLD, MAX/MIN, REL, PEAK function. enable mode HOLD PEAK MAX/MIN REL active mode (1)HOLD X X X (2)PEAK O X X (3)MAX/MIN O X X (4)REL O X X *1: If HOLD function is enabled, then MAX/MIN, REL, PEAK function is disabled. *2: If PEAK function is enabled, then REL, MAX/MIN function is disabled, but HOLD function still can be actived. *3: If MAX/MIN function is enabled, then REL, PEAK function is disabled, but HOLD function still can be actived. *4: If REL function is enabled, then PEAK, MAX/MIN function is disabled, but HOLD function still can be actived (1) HOLD and RESET: RESET (Semiauto) 1 push Data Hold *1: If continue to press the HOLD pin (logic low) then power on the ES51961, and release it in 1.2 sec, the all segments will bright until pressing the HOLD pin again. *2: Every time this RESET pin pulse to low (0.8~1.6ms), the pushed function (HOLD, MAX/MIN, REL, PEAK, ZOOM except BKLIT), auto-power-off function and counter will be reset. 12 2006/1/24 ES51961 3 3/4 MANU DMM (2) REL+HOLD: RESET (Semiauto) 1 push <1 sec "REL" active the relative value 1 push >1 sec "REL" blink the Di(N) value 1 push<1 sec push HOLD "REL" & "H" active holded relative value push HOLD 1 push<1 sec "REL" blink & "H" active the Di(N) value Note: 1.When REL function is enabled: Display = Di(N+K)－Di(N), K = 0, 1, 2, 3, ... Di(N): the reference Di(N+K): next K step input reading. 2. If the input value Di(N) or Di(N+K) ≧ (± 4000), the relative value will display “OL”. (3) MAX/MIN+HOLD: 1 push < 1 sec RESET (Semiauto) 1 push > 1 sec 1 push < 1sec "MAX" active max. value "MIN" active min. value push HOLD "MAX" & "H" active holded max. push HOLD "MIN" & "H" active holded min. 1 push < 1sec 13 "MAX" & " MIN" blink current value push HOLD "MAX" & "MIN" & "H" blink current value 2006/1/24 ES51961 3 3/4 MANU DMM (4) PEAK: CA LIBR A TIO N 1 pu sh > 2 sec en d (* 4 ) en d(* 5) RES E T (*1 ) (M A N U ) (S em iau to ) 1 p ush < 1 sec 1 p ush > 2 sec 1 push > 1 sec "PM A X " active " PM IN " activ e m ax . p eak value m in. p eak v alu e 1 p u sh < 1 sec (* 1): p ush R A N G E > 1 sec *2: Under the RESET (semiauto) or PEAK mode, if press PEAK > 2 sec, the PEAK function will enter to calibration mode, the LCD will show "CAL." and the internal buffer will remember the internal OP offset voltage then back to the manual mode. Whenever the PEAK function is enabled again, the reading value will minus the offset voltage, the purpose is to get the real peak reading. *3: Under PEAK mode, the bargraph always show current value. *4, *5: Please see page 16 note 3. (5) RANGE: The ranges of voltage, frequency and logic modes is selected by RANGE pin. The following are the operation flow chart of them. Voltage mode: RESET (Semiauto) 1 push < 1 sec MANU 1 push > 1 sec 1 push < 1 sec (change OR's state) Frequence mode: RESET (Automatic) 1 push < 1 sec MANU 1 push > 1 sec 1 push < 1 sec (change measuring range) Logic mode: default (4.0V) 1 push can change the logic high reference voltage between 4.0, 2.4 and 1.5V. 14 2006/1/24 ES51961 3 3/4 MANU DMM MP The default state is H (0V). When MP="H", if turn MAX/MIN or PEAK on, OR and range keep original state. If MP=”L”, whether the original state of OR is “H” or “L”, if active MAX/MIN or PEAK, the OR’s state will be set to “H”. OR This pin is used to set/indicate the measured ranges. The criterion of OR pin changing are: (1) if under continuity, frequency, logic or diode mode, the OR is always L. (2) under volt1~volt4 mode and MP="L", if MAX/MIN or PEAK active, the OR="H". (3) except situation (1), (2) (i.e. volt1~volt4 mode and MP=”H”), if turning HOLD, MAX/MIN, REL, PEAK on, the system will enter into manual mode and OR keep its original state. (4) except situation (1)~(3), under semiauto mode, if (FC1,FC2,FC3)=(1,1,1) and D10 on, then (i) ORÎ"H", if high resolution ≥2000 counts (ii)OR keeps its original state, if 380≤ high resolution <2000 counts (iii) ORÎ"L", if high resolution <380 counts (5) except situation (1)~(4), under semiauto mode the state of OR is: (i) ORÎ"H", if high resolution ≥4000 counts (ii) OR keeps its original state, if 380≤ high resolution <4000 counts (iii) ORÎ"L", if high resolution <380 counts Note: 1. There are several situations between MP and OR pins. As follow: (1) MP="H": The state of OR pin can be set by RANGE pin. And if we push MAX/MIN or PEAK key under semiauto mode, the meter will enter into manual mode and the OR pin keeps its original state. (2) MP="L": The state of OR pin can be still set by RANGE pin. But if we push MAX/MIN or PEAK key under semiauto or manual mode, the OR pin will change to "H". 15 2006/1/24 ES51961 3 3/4 MANU DMM 2. Besides, if we have already turned MAX/MIN or PEAK function on, the relationship between MP and OR can restate: (1) MP="H": If the states of M2, M10 or D10 are changed by OR or rotating mode , then MAX/MIN or PEAK function will be reset. Though the state of OR pin isn't changed again , it can be changed by RANGE pin. (2) MP="L": If the states of M2, M10 or D10 are changed by OR's state, the MAX/MIN or PEAK function keep in its original state. 3. Under PEAK calibration mode, (1) MP="H": When calibration is end, the meter will back to manual mode (2) MP="L": When calibration is end, the meter will back to its original mode (manual or semiauto) before the function happen. 4. Whatever MP = "H" or "L", the HOLD, REL, MAX/MIN or PEAK complete, the meter will back to the original mode (manual or semiauto) before these functions happen. ZOOM (1) Voltage mode The default status of the bargraph display is from left to right. Once this function is pushed, the bargraph display will change to ZOOM mode. (2) Logic mode This pin is used to turn on the buzzer whether is under High, Low or unknown Logic (the default is High beep). BKLIT When this pin BKLIT is pushed, the BKOUT pin output will change from V- to V+ for 60 sec then returned to V- again, but if this pin is pushed again under 60 sec this function will be canceled 16 2006/1/24 ES51961 3 3/4 MANU DMM Decimal point select (Under voltage mode) DP2 DP1 Decimal point H H None H L Point1 L H Point2 L L Point3 Auto-Power-Off function Once power on the ES51961, the auto-power-off function will be enabled and if the functions are not changed in 30 minutes, the auto-power-off condition will be happened. When power-off happens, the final data is saved. If continue to push anyone of the push function (except HOLD pin) then power on the ES51961, the auto-power-off function will be disabled, and LCD segment "APO" will be turn off. Re-Power-On Once auto-power-off happens, push anyone of the push function or change the rotary mode can re-power-on the ES51961. When anyone of the push function is enabled, the storage value will display with HOLD mold (except logic state), if auto-power-off happened under MAX/MIN (or PEAK, REL) mode, the PMAX , PMIN , or relative and reference value will be keeped. But if repower-on the ES51961 with rotary mode, the storage value will be clear. SLEEP When auto-power-off happens, this pin output will change from V+ to V-, once re-power on happen, this pin output will change from V- to V+. Buzzer (1) The BUZZER turns on in the following condition : •1 beep: Measurement function changed ,power and re-power on ,HOLD MAX/MIN, REL, PEAK, BKLIT, SET, RANGE or ZOOM are 17 2006/1/24 ES51961 3 3/4 MANU DMM pushed. •3.3 beeps: Input reading overrange. •2.5 KHZ continue: Continuity mode, Diode mode, Logic mode. (2) BUZZER output waveform: 2.5 KHz (continued) 0.4 mS beeps (3.33 beeps/sec) 0.15 sec 0.3 sec Serial Data Output The serial data is output two times from SDO pin on each A/D conversion cycle. The data format satisfy JIS 7BIT transmission code and the baud rate is 2400, it means the receiver terminal can use RS-232 interface to read data. single package 0V -3V D0 ~D6 0 LSB p P 1 MSB A single package include a start bit (0), D0~D6 (7 bit), a parity check bit (odd) and a stop bit (1). All the data stream is consist of 110× 2 bits. The high and low voltage levels correspond to DGND and V- respectively. SDO remains at 1 (high) when it is inactive. Hence the Start bit (0) could be used as the triggering signal to begin the reading process. 18 2006/1/24 ES51961 3 3/4 MANU DMM All package p 1 0 0 p 1 0 digit3 range p 1 0 0 digit0 p 1 0 p 1 function1 p 1 0 function2 p 1 sataus2 status1 p 1 0 0 digit2 p 1 0 digit1 0 p 1 p 1 LF CR Digit0~3 data is exactly the receiver display number, but the range, function, status1, status2 data all need written program to judge what the data mean. Note : LSB bit is sent first, then MSB bit. The meter always outputs the current input value to the serial port in spite of HOLD mode. Each block is repeated twice in one conversion cycle. The detailed data format of each packet is listed below. (1) RANGE: Under frequency mode the output is as below: Range Frequency 0110100 4 KHz 0110110 40 KHz 0110010 400 KHz Range Frequency 0110000 4 MHz 0110001 40 MHz 0110011 400 MHz Under the other mode (Logic, Voltage), the output is 0110100 (2) DIGIT0~3: Digit Display 0110000 0 0110001 1 0110010 2 0110011 3 0110100 4 Digit Display 0110101 5 0110110 6 0110111 7 0111000 8 0111001 9 If the input value is overrange (OL), the reading data DIGIT3=4, DIGIT2=0, DIGIT1=0, DIGIT0=0, but under the frequency mode, DIGIT0~ DIGIT3 output the measured value. 19 2006/1/24 ES51961 3 3/4 MANU DMM (3) FUNCTION: FUNCTION1: 0 1 1 FC1 FC2 FC3 BIT3 BIT2 BIT1 1 MANU M2 BIT5 BIT4 BIT3 M10 BIT2 D10 BIT1 － BIT7 BIT6 BIT5 BIT4 －: "1" is for the negative (-). FUNCTION2: 0 BIT7 1 BIT6 MANU: "1" is on " " mode, and "0" is on "AUTO" . (4) STATUS: STATUS1: 0 1 1 PMAX PMIN BATT OL BIT7 BIT6 BIT5 BIT4 BIT3 BIT2 BIT1 BATT: "1" is for the battery voltage is less than 2.3V±0.2V. OL: "1" is for the input overrange. STATUS2: 0 1 1 P2 P1 APO OR BIT7 BIT6 BIT5 BIT4 BIT3 BIT2 BIT1 APO: "1" is for the auto-power-off function enabled OR: "1" means the voltage of OR pin is V+. Note: 1. Under Diode mode, if reading is >= 2000 counts, LCD show "OL". 2. Under Volt1 (ie (FC1, FC2, FC3)=(1, 1, 1) ) & D10 mode, if reading is >= 2000 counts, LCD show "OL". 3. When the offset voltage of PEAK mode is >= 1000 counts, LCD show "OL". 4. except condition 1., 2. and 3., if input reading is ≥4000 counts, LCD show "OL". P2 0 0 1 1 P1 0 1 0 1 Decimal point None Point1 Point2 Point3 (5) CR (BACK): Transmission code "0001101". (6) LF (LINE FEED): Transmission code “0001010”. 20 2006/1/24 ES51961 3 3/4 MANU DMM 7. Test Circuit (1) DC test (2) FREQ input test F R E Q -100 mV REFLO 1M REFHI VIN+ + 0.1u DC IN - 200 2.2u VINC1815 NPN -3V (3) AC test PTC 1.5K FREQ IN (4) Peak function test PTC 2.2k REFLO REFHI VIN+ -100 mV VINO O P P + - DC O P O 400 mV INPUT 0V VIN+ 0.1u Under voltage mode, if Peak function is enabled, PKIN input will be enabled 0.47u 1.0u D2 22K PKIN AC/DC rectifier 88M 0.1u 1M AC AC IN 470 1.0u 5K 10K 22K D1 (5) LOGIC test LOGIC LOW (BLACK) 470 ES51961 9V PKIN BATTERY PTC 2.2k LOGIC HIGH (RED) (6) Low battery test(9V) V- 680K LBAT9 0.1u 270K AGND V- 0V Note: Light shielding for diode. 21 2006/1/24 ES51961 3 3/4 MANU DMM 8. Application Circuit CAZL Note: In order to prevent IC from damaging by inappropriate operation, the Zener diodes MUST be required as protection. 22 2006/1/24 ES51961 3 3/4 MANU DMM 9. The Other (1) LCD pin assignment BP1 BP2 BP3 BP4 SEG1 APO Bar0 Bar1 Bar2 SEG2 BarBar3 Bar4 BP4 BP3 BP2 BP1 SEG4 REL BATT Bar7 Bar8 SEG5 4F 4E Bar9 Bar10 SEG6 4A 4G 4D Bar11 SEG7 4B 4C Bar12 Bar13 SEG8 MAX DP3 Bar14 Bar15 SEG9 SEG10 3F 3A 3E 3G Bar16 3D Bar17 Bar18 BP4 BP3 BP2 BP1 SEG11 3B 3C Bar19 Bar20 SEG12 SEG13 SEG14 SEG15 SEG16 SEG17 MIN PMAX 2F 2A 2B PMIN ZOOM DP2 2E 2G 2C Bar21 Bar23 Bar25 2D Bar28 Bar30 Bar22 Bar24 Bar26 Bar27 Bar29 Bar31 BP4 BP3 BP2 BP1 SEG18 SEG19 SEG20 SEG21 SEG22 SEG23 HOLD 1F 1A 1B KHZ DP1 1E 1G 1C MHZ Y Bar32 Bar34 1D Bar37 Bar39 X Bar33 Bar35 Bar36 Bar38 Bar40 BP4 BP3 BP2 BP1 SEG3 Bar5 Bar6 NOTE: X: always on. Y: if bargraph is under normal mode (except ZOOM mode), the position is on for (0, 10, 20, 30, 40). ZOOM: if bargraph is under zoom mode, the positionis on for (-20, -10, 0, 10, 20). "": Logic high. "": Logic low. " ": manual mode. 23 2006/1/24 ES51961 3 3/4 MANU DMM Example for digits under bargraph: Case1: Case2: Example for LCD panel: (2) Backplane Waveform (Frequency = 78 Hz) 24 2006/1/24 ES51961 3 3/4 MANU DMM (3) LCD Display ON Condition LCD Annunciator "BATT" "" "" "-" "PMAX" "PMIN" "REL" "HOLD" "MAX" "MIN" " " " " " " Condition Low battery is detected. Logic high function Logic low function DC voltage and current function and Logic unknown mode. Maximum peak function is used. Minimum peak function is used. REL function is used. HOLD function is used. MAX function is used. MIN function is used. Continuity-check and Diode-check are used. Diode-check is used. Frequency manual mode or completing a calibration on PEAK mode are used. "KHz" Frequency counter is used. "MHz" Frequency counter is used. "APO" Auto-power-off function is used. Bargraph Bargraph annunciator is only depend on input reading . " -20, -10, 0, 10, 20" ZOOM function is used. (4) PH1, PH2, PH3, PH4 four phase output PH1 25.6ms PH2 PH3 PH4 102.4ms 25 2006/1/24 ES51961 3 3/4 MANU DMM (5) Package 1 100 Pin QFP Package W A L b a θ B 2 D C d Dimension Paramenters Symbol W L A B C d a D θ Min. Milimeter Typ. Max. Min. 19.90 20.00 20.10 783.5 13.90 14.00 14.10 547.2 0.425 0.20 0.30 0.40 7.9 0.65 1.05 1.20 1.35 41.3 2.57 2.72 2.87 101.2 2.50 o 0 10o 26 Mill Typ. 787.4 551.2 16.7 11.8 25.6 47.2 107.1 98.4 Max. 791.3 551.2 11.8 47.2 107.1 2006/1/24