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ES51983
3 3/4 CAP AUTO DMM
Features
* 4000 count display * Full automatic measurement *Voltage measurement *Current measurement *Resistor measurement * Range change function * Data hold function * Diode measurement * 40MHz Frequency counter * ADP mode with external reference voltage * Serial data output (RS232 format) * Auto power off (10 mins) and re-power on * Low battery detect (3V and 9V) * 3V DC power supply * Back light function
Description
ES51983 is an integrated analog-to-digital Converter(ADC) with 4000 counts LCD display ,automatic range selection, and 3V DC power supply. Automatic range selection is provided for voltage(AC/DC) measurement, resistor measurement and current measurement. Expensive and bulky mechanical range switches are not required. Other features include data holding, diode measurement, temperature measurement, continuity checking, low battery detection, auto- power off, repower on, and RS232 data output.
Application
Digital Multimeter
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Pin Assignment
HOLD RANGE SLACDC KEY FC5 FC4 FC3 FC2 FC1 NC C+ CNC SDO LBAT9 VVDGND AGND AGND
100 90 80
NC V+ V+ NC CL+ CLCIL CAZL BUFL IVSH IVSL OVX OVH OVSG NC OR1 VR5 VR4 VR3 VR2 TEST5 ACVL ACVH NC ADI NC ADO NC VRH VR
1
10 70
20 60
30
40
50
NC BKOUT NC XTAL NC OSC1 OSC2 NC BUZOUT BUZIN NC ANNUNC BP1 BP2 BP3 BP4 SEG01 SEG02 SEG03 SEG04 SEG05 SEG06 SEG05 SEG07 SEG08 SEG09 SEG10 SEG11 SEG12 NC NC
SEG13 SEG14 SEG15 SEG16 BKLIT RS232 NC FREQ SLEEP NC NC NC NC VBAR NC VR1 SGND ADP VAVA+
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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 25 26 27 28 29 30 31 32
Symbol
NC V+ V+ NC CL+ CLCIL CAZL BUFL IVSH IVSL OVX OVH OVSG NC OR1 VR5 VR4 VR3 VR2 TEST 5 ACVL ACVH NC ADI NC ADO NC VRH VR VA+ VA-
Type
P P IO IO O O O I I I I I O O O O O I/O O O I O O I I
Description
Positive supply voltage, output of on-chip DC-DC converter. Positive supply voltage, output of on-chip DC-DC converter. High resolution positive connection for reference capacitor. High resolution negative connection for reference capacitor. High resolution integrator output. Connected to integral capacitor High resolution auto-zero capacitor connection. Integral resistor connection for high resolution buffer output High current measurement input. Low current measurement input Input high voltage for resistance measurement Output connection for resistance measurement Sense low voltage for resistance measurement Reference resistor connection for 399.9 range Voltage measurement /10000 attenuator(4000V) Voltage measurement /1000 attenuator(400.0V) Voltage measurement /100 attenuator(40.00V) Voltage measurement /10 attenuator(4.000V) Test pin Negative output of AC to DC converter Positive output of AC to DC converter. Negative input of internal AC to DC Opamp. Output of internal AC to DC Opamp. Output of band-gap voltage reference .Typically -1.2V Reference input voltage connection. Typically -100mV For ADP. Deintegrating voltage positive input. The input should be higher than VA-. For ADP. Deintegrating voltage negative input. The input should be lower than VA+. ADP input Signal Ground Measurement input Decimal point control for temperature measurement in ADP mode.
33 ADP I 34 SGND G 35 VR1 I 36 NC 37 VBAR I 38 NC 39 NC 40 NC 41 NC 42 SLEEP O 43 FREQ I 44 NC 45 RS232 I 46 BKLIT I 47~50 SEG16~SEG13 O Continued on next page.......
Asserts low in the sleep mode. See page 8, function description Frequency Input Pulse low to enable serial data output. Back light function. Pulse low to set BKOUT pin output LCD segment line 16~13
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...continued from previous page NC 51 NC 52 53~64 SEG12~SEG01 O 65 BP4 O 66 BP3 O 67 BP2 O 68 BP1 O 69 ANNUNC O
LCD segment line 12~01 LCD backplane 4 LCD backplane 3 LCD backplane 2 LCD backplane 1 Square wave output at the backplane frequency, synchronized to BP1. ANNUNC can be used to control display annunciator. Connect an LCD segment to ANNUNC to turn it on; connect an LCD segment to its backplane to turn it off. Enables the buzzer. Low active. Outputs an 2KHz audio frequency signal for driving piezoelectric buzzer when BUZIN is low. Crystal oscillator output connection Crystal oscillator input connection The chip uses internal RC oscillator if pin is connected to V-, and uses external crystal oscillator if this pin is floating or connected to DGND If BKLIT function is enabled, this pin will change from -3V to +3V for 60 sec, once press BKLIT pin again within 60 sec, this pin will change back to -3V. Pulse low to enable HOLD mode. Pulse low to enable manual mode and manual range selection. Select AC/DC initial state. This pin is pull low Pulse low to change mode. In ADP mode, if this pin is connected to V-, the buzzer output will be off when the ADP input overflows. Switch 5 for function selection. Switch 4 for function selection. Switch 3 for function selection. Switch 2 for function selection. Switch 1 for function selection. Positive capacitor connection for on-chip DC-DC converter. Negative capacitor connection for on-chip DC-DC converter. RS232 compliant serial data output. Low battery configuration. If 3V battery is used, connect it to AGND. The default low-battery threshold voltage is -2.3V. If 9V battery is used, the low battery annunciator is displayed when the voltage of this pin is less than VRH (-1.2V) Negative supply voltage. Connecting to battery negative terminal. Negative supply voltage. Connecting to battery negative terminal. Digital ground, connected to battery positive terminal. Analog ground. Analog ground.
70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95
NC BUZIN BUZOUT NC OSC2 OSC1 NC XTAL NC BKOUT NC HOLD RANGE SLACDC KEY FC5 FC4 FC3 FC2 FC1 NC C+ CNC SDO LBAT9
I O O I I
O
I I I I I I I I I O O O I
96 97 98 99 100
VVDGND AGND AGND
P P G G G
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Absolute Maximum Ratings
Characteristic Supply Voltage (V- to AGND) Analog Input Voltage V+ AGND/DGND Digital Input Power Dissipation. Flat Package Operating Temperature Storage Temperature Rating -4V V- -0.6 to V+ +0.6 V+ (AGND/DGND+0.5V) AGND/DGND (V- -0.5V) V- -0.6 to DGND +0.6 500mW 0 to 70 -25 to 125
Electrical Characteristics
TA=25, V- = -3V
Parameter Power supply Operating supply current In DCV mode Voltage roll-over error Voltage nonlinearity Input Leakage Low battery flag voltage Zero input reading Reference voltage and open circuit voltage for 400 measurement Peak to peak backplane drive voltage Counter time base period Open circuit voltage for Measurement (except 400) Symbol Test Condition VIDD Normal operation In sleep ISS REV 10M input resistor Best case straight NLV line V- to AGND 10M input resistor 100K resistor between VRH and AGND -3.5V V -2.2V fOSC = 4MHZ and Continuity Mode Between V- pin and HOLD, RANGE, KEY, FC1, FC2, FC3, FC4, FC5, XTAL, BKLIT Between V- pin and RS232 Between GND Pin and SLACDC 1% 5% 100K resister Between VRH 0VREF
Internal pull-high to 0V Current
--
1.2
-- A
--
11 1.5
-- A -- -- -- HZ ppm/
Internal pull-low to VCurrent AC frequency response at 4.000V range Reference voltage temperature Coefficient TCRF
-- -- --
40-400 400-2000 50
Note: 1.Full Scale
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Function Description 1. Operating Modes
1.1 Voltage Measurement A reconfigurable voltage divider automatically provides a suitable range in voltage measurement mode. The following table summarizes the full scale ranges in each configuration.
Configuration VR1 VR2 VR3 VR3 VR5 Full Scale Range 400.0mV 4.000V 40.00V 400.0V 4000V Divider Ratio 1 1/10 1/100 1/1000 1/10000 Resister Connection R2 / (R1+R2) R3 / (R1+R3) R4 / (R1+R4) R5 / (R1+R5)
1. 2.
400.0mV range only exists in manual mode. In the 4000V range, if the digit numbers is larger than 1000V, LCD will display "OL".
The measurement of true RMS using ES636 If ES636 (or other true RMS-to-DC converter chip) is used for true RMS measurement, the suggested application circuit is shown below. When ES636 is used for true RMS, ADO and ADI pin short together, TEST5 pin keeps floating, and ACVL pin connects to SGND. 100 1K 10K 101K 1.11M
14 13 +Vs
Cav
OVSG OR1 VR5 VR4 VR3 VR2 ACVL ACVH
1
200
-Vs
2
ES636
3 4 5 6 7
12 11 10 9 8 +Vs
150 470K
ADI ADO
500K
-Vs
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1.2 Resistance Measurement A reconfigurable divider automatically provides a suitable full scale range in resistance measurement mode. The following table summarizes the full scale ranges and the reference resistors in each configuration.
Configuration OR1 OR2 OR3 OR4 OR5 OR6 Full Scale Range 400.0 4.000K 40.00K 400.0K 4.000M 40.00M Divider Ratio R6 R5 R4 R1 R3 R1 R2 R1 Resister Connection 100 1K 10K 100K 1M 10M
1.3 Current measurement Current measurement has three modes. The following table summarizes the full scale range of each mode.
Mode Automatic Mode 1 Automatic Mode 2 Automatic Mode 3 Manual Mode Range Selection A mA A A Full Scale 400.0A / 4000A 40.00mA / 400.0mA 40.00A / 4.000A 40.00A
1.4 Continuity Check Continuity check shares the same configuration with 400.0 manual resistance measurement mode, but with buzzer output to indicate continuity. The buzzer generates a 2KHz sound whenever the digit number less than 25. Because the cycle time of measurement is only 70ms, the least significant digit will not display. 1.5 Diode Measurement Diode measurement mode shares the same configuration with 4.000V manual voltage measurement mode. If the test circuit is open or the voltage drop between the two ports of the device (diode) under test is larger than 2V, the LCD panel will show "OL". The buzzer generates a 2KHz sound whenever the digit number is less than 0.25V. Because the cycle time of measurement is only 70ms, the least significant digit will not display. 1.6 Auto power off ES51983 has a default auto power off function. If the meter idles for more than 10 minutes, the chip automatically turns the power off. When this happens, the state of the meter is saved. In order to disable auto power off function, power on the meter when
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any of the push function, except for HOLD, is pressed down. In addition, when RS232 output is active, the auto power-off function is also disabled. The APO sign on the LCD panel indicates whether the auto power-off is enabled or not.
Note: Powering on the meter while pressing HOLD turns on all LCD segment until HOLD is pressed again. 1.7 Frequency counter The time base of the frequency counter is derived from an external crystal oscillator by Tcounter = 4000000 Fosc
where fosc is the frequency of the crystal oscillator. Thus, the counter has a 1 second time base when a 4MHz oscillator is used. The frequency counter can select the proper range automatically or manually. Auto-range operation extends over five decades, from 4KHz to 40MHz The following table summarizes the full scale range of the frequency counter.
Range FR1 FR2 FR3 FR4 FR5
Full Scale 4.000KHz 40.00KHz 400.0KHz 4.000MHz 40.00MHz
1.8 Sleep The meter enters sleep mode after auto power off. The SLEEP pin asserts low (-3V) in the sleep mode, and asserts high (+3V, not 0V) after re-power on.
1.9 Re-power on After auto power-off, pushing any of the push function or changing the rotary mode can turn on the meter again. If the meter is re-powered on by changing the rotary mode, the saved state is cleared. If the meter is re-powered on by push functions, the chip restores the saved state and enters HOLD mode. The LCD displays the saved value.
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2. Measurement Mode Switching Measurement mode depends on the logic level of FC1, FC2, FC3, FC4, FC5, and KEY. When FC5 is HIGH, the measurement modes are listed in the following table.
SLACDC FC1 0 1 0 1 0 1 0 1 0 0 1 1 1 1 1 1 1 1 1 0 X 0 X 0 X 0 X 0 X 0 X 0
FC2 0 1 1 0 0 0 1 1 0 0 0 1 0 1 0 1
FC3 1 0 1 0 0 1 0 1 0 0 1 0 0 1 1 0
FC4 Mode Function of KEY 1 Voltage Measurement DCV(initial) ACV 1 Current Measurement(A) DCA(initial) ACA 1 Current Measurement(mA) DCA(initial) ACA Manual Current Measurement(A) 1 DCA (initial) ACA 0 Auto Current Measurement(A) DCA(initial) 1 Voltage Measurement ACV (initial) DCV 1 Current Measurement(A) ACA(initial) DCA 1 Current Measurement(mA) ACA (initial) DCA Manual Current Measurement(A) 1 ACA (initial) DCA 0 Auto Current Measurement(A) ACA (initial) 1 Resistance Measurement Continuity 1 Resistance Measurement Diode 1 Continuity Check Continuity Diode 1 Resistance Measurement Continuity Diode 0 Frequency Measurement -- 0 -- Temperature()
Ps. X means "don't care" When FC5 is LOW, KEY is disable. The corresponding measurement modes are list below
SLACDC FC1 0 1 0 1 0 1 0 1 0 0 1 1 1 1 1 1 1 1 1 0 X 0 X 0 X 0 X 0 X 0 X 0 FC2 0 1 1 0 0 0 1 1 0 0 0 1 0 1 0 1 FC3 1 0 1 0 0 1 0 1 0 0 1 0 0 1 1 0 FC4 1 1 1 1 0 1 1 1 1 0 1 1 1 1 0 0 Mode AC Voltage Measurement AC Current Measurement(A) AC Current Measurement(mA)
Manual AC Current Measurement(A) Auto AC Current Measurement(A)
DC Voltage Measurement DC Current Measurement(A) DC Current Measurement(mA)
Manual DC Current Measurement(A) Auto DC Current Measurement(A)
Resistance Measurement Resistance Measurement Continuity Check diode Measurement Frequency Measurement Temperature()
Ps. X means "don't care"
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The other combinations of FC1, FC2, FC3, and FC4 are for ADP modes. In ADP modes , if FC5 is LOW, the minus sign on the LCD panel will not be displayed. And if KEY pin is floating, the buzzer beeps when the input signal is overflow. The ADP mode function is summarized below.
FC1 1 1 1 1 FC2 1 1 0 0 FC3 1 0 0 1 FC4 0 0 0 0 Mode ADP0 ADP1 ADP2 ADP3
Note: Temperature measurement mode takes input signal from ADP pin. In temperature measurement mode, VBAR pin is used to control the right most digit point on the LCD panel. When VBAR is LOW, this digit point is displayed. 3. Push function 3.1 HOLD HOLD mode makes the meter stop updating the LCD panel. This mode can be nested in most of the special modes. Enabling HOLD function in automatic mode makes the meter switch to manual mode, but the full scale range remains the same. HOLD function can be cancelled by changing the measurement mode, pressing RANGE, or push HOLD again. 3.2 Range RANGE pin switches to and from automatic and manual mode, and while in manual mode, changes the full scale range. The following figure shows the state transition.
1 push < 1 sec
Automatic Mode
1 push > 1 sec
Manual Mode Range up
1 push < 1 sec
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Measurement Mode Auto Manual V(DC/AC) VR2 - VR5 VRi VRi + 1, VR5 VR1 A(DC/AC) R1 - R2 R1 R2, R2 R1 mA R1R2 R1 R2 (AC/DC) R2 R1 Auto A(DC/AC) R1 - R2 R1 R2, R2 R1 A(DC/AC) fixed fixed ORi OR1- OR6 ORi + 1, OR6 OR1 Continuity fixed fixed Diode fixed fixed Control Range Initial Range 400.0mV - 4000V 4.000V
400.0A - 4000A 40.00mA - 400.0mA 4.000A - 60.00A 40.00A 400.0 - 40.00M 400.0 4.000V
400.0A 40.00mA 4.000A 40.00A 400.0 400.0 4.000V
Note: Pushing RANGE resets all existing special modes. 3.3 KEY See Section "Measurement Mode Switching" for the function of this pin. 4. Serial Data Output The serial data sent to SDO pin twice every A/D conversion cycle. The data format complies wit JIS 7Bits transmission code with a baud rate of 19230. The host can use RS232 interface to read the data. A single data packet includes a start bit (always 0), 7 data bits, an odd parity check bit, and a stop bit (always 1). 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 the reading process. The following figure shows the data format of a single packet. The LSB is sent first and the MSB is sent last. single package
0V -3V
0
LSB
D0 ~D6
p1 P
MSB
One data block consists of 11 packets, or 110 bits. The following figure shows the format of a data block. The range packet indicates the full scale range of the meter. Digit 3 through digit 0 are just the digits on the LCD panel. The function packet
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indicates the measurement mode of the meter. Status, option 1 and option 2 give the status of the meter. CR and LF are delimiters used to separate the blocks. all package
0 range 0 digit1 0 status
p10 digit3 p10 digit0 p10 option1
p10 digit2 p10 function p10 option2
p1
p1
p1
0 CR
p10 LF
p1
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. 4.1 FUNCTUON This packet indicates the measurement mode of the meter. The following table summarizes the transmitted code for each mode. Note that the encoding of this packet is different from the encoding of FC1-FC4 switch.
Code 0111011 0111101 0111111 0110000 0111001 0110011 0110101 0110001 0110100 0111110 0111100 0111000 0111010 Measurement Mode Voltage A Current mA Current Auto A current Manual A Current Continuity Diode 1*Temperature ADP0 ADP1 ADP2 ADP3
Note: 1*.The judge bit in the Status packet determines whether the unit is Celcius or
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Fahrenheit. 4.2 RANGE This packet indicates the full scale range of the meter. When the meter operates in continuity mode, diode mode, or current (A) mode, this packet is always 0110000 since the full scale range in these modes are fixed. The following table lists the code for each range in each measurement mode.
Code 0110000 0110001 0110010 0110011 0110100 0110101 0110110 V 4.000V 40.00V 400.0V 4000V 400.0mV mA 40.00mA 400.0mA A 400.0A 4000A Auto A 4.000 A 40.00 A 400.0 4.000K 40.00K 400.0K 4.000M 40.00M
4.3 DIGIT 3 - DIGIT 0 Digit 3 is the most significant digit on the LCD panel, and digit 0 is the least significant digit. When the LCD panel shows OL, the serial port outputs 4000.
Digit 0 1 2 3 4 5 6 7 8 9 Code 0110000 0110001 0110010 0110011 0110100 0110101 0110110 0110111 0111000 0111001
Because the cycle time of measurement for continuity/diode mode is only 70ms, the least significant digit may not be accurate. 4.4 STATUS The format of this shown below. The Judge field is meaningful only when the Function packet indicates Temperature mode. In Temperature mode, judge is 1 if the unit is and is 0 of the unit is . Sign field indicates whether the minus sign on the LCD panel is on or off. BATT field is one of battery low condition is true. OL indicates input overflow.
0 BIT 6 1 BIT 5 1 BIT 4 Judge BIT 3 13 Sign BIT 2 BATT BIT1 OL BIT 0 03/01/16
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3 3/4 CAP AUTO DMM
4.5 OPTION 1 This packet is not used.
0 BIT 6 1 BIT 5 1 BIT 4 HOLD BIT 3 0 BIT 2 0 BIT1 0 BIT 0
If Hold field is 1, Hold function is active. Hold function will not influence Digital 3~0 which is related to current measured value. 4.6 OPTION 2 This packet contains information on the operation mode of the meter. The format is shown below. The DC field indicates that the meter operates in DC measurement mode, either voltage or current. The AC field indicates that the meter operates in AC measurement mode, either voltage or current. The AUTO field is set to one if the meter operates in automatic mode, and is set to zero when the meter operates in manual mode.
0 BIT 6 1 BIT 5 1 BIT 4 DC BIT 3 AC BIT 2 AUTO BIT1 0 BIT 0
4.7 CR Carrage return. The transmitted code is 0001101. 4.8 LF Line feed. The transmitted code is 0001010. 5. Miscellaneous The conditions which the meter turns on the buzzer include: (1) Changing measurement mode generates one beep. (2) Pressing any of the push junctions generates one beep, if the function is valid. (3) Power on and re-power on generate one beep. (4) Input overflow in voltage and current mode generates one beep every 0.3 seconds (or 3.33 beeps per second.) (5) Continuity(diode) check generates a continuous 2KHz beep whenever the measurement is less then 25(0.25V) (6) Auto power off generates a 2KHz beep which lasts for 1.5 seconds. The following figures shows the output waveform from the BUZOUT pin.
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3 3/4 CAP AUTO DMM
0.5 mS
(a) Continuous 2KHz beep
0.15 sec
0.3 sec
(b) 3.33 beep/sec 5.1 LCD Panel 1
BATT AUTO MANU DC AC APO RS232
BP1 BP2 BP3 BP4 SEG09 F1 E1 P1
HOLD
n 1 m1 F 2 m2 V A M K HZ
SEG01 SEG02 SEG03 SEG04 SEG05 SEG06 SEG07 SEG08 BATT DC AUTO MANU A3 B3 HOLD A2 AC F4 A4 B4 F3 G3 F2 B2 APO G4 C4 E3 C3 E2 G2 -- RS232 E4 D4 P3 D3 P2 D2 C2 SEG10 A1 G1 D1 SEG11 V B1 C1 K SEG12 A M HZ SEG13 m2 x x x
15
SEG14 u2 x x x
SEG15 n u1 m1 F
SEG16 x x
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5.2 LCD Backplane Waveform
V- +3.1
VV- +3.1
VV- +3.1
VV- +3.1
VV- +3.1
V-
5.3 LCD display on condition
LCD Annunciator V A F Hz DC AC AUTO MANU HOLD m1 u1 n m2 u2 M K APO Condition In voltage measurement mode, and diode measurement mode. In current measurement mode. In resistance measurement mode, and continuity mode. In capacitance measurement mode. In continuity check mode. In diode mode. In frequency mode. In DC voltage or DC current mode. In AC voltage or AC current mode. When automatic full scale range selection is enabled. In manual mode. When HOLD function is enabled. In capacitor measurement mode and the full scale range is in the order of mF. In capacitor measurement mode and the full scale range is in the order of uF. In capacitor measurement mode and the full scale range is in the order of nF. In voltage or current measurement mode and the full scale range is in the order of 10-3. In current measurement mode and the full scale range id in the order of uA. In resistance measurement mode and the full scale range is in the order of M In resistance measurement mode and the full scale range is in the order of K In temperature measurement mode and when the unit is In temperature measurement mode and when the unit is When auto power off function is enabled. In voltage or current measurement mode and when the input is negative.
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5.4 Operating Timing ES51983 incorporates a dual slope ADC with four phases: ZI, AZ, INT and DINT. The timing of each phase is listed below. *Voltage /ohm/ADP measurement: Phase ZI AZ INT DINT Time 100ms 100ms 100ms 400ms
Ps. In the voltage and ohm measurement with auto mode, if the range is changed, the internal clock rate will increase ten times and the new measurement cycle becomes 1/10 times of the original cycle until the range is stable. *Current mode Phase ZI AZ INT DINT *Continuity/diode measurement Phase ZI AZ INT DINT Time 10ms 10ms 10ms 40ms Time 100ms 100ms 100ms 200ms
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6.Test circuit
1. Voltage test
AGND OVSG 100 1K 10K 101K 1.11M D2 D1 1.0u 15K 10K 15K 0.47u 1.0u 0.1u 88M OR1 VR5 VR4 VR3 VR2 ADO ADI ACVL ACVH TEST5
4.Current test
AGND SGND
0.005 0.045 0.45 4.5 A mA V R 1 10M -100mV uA V R 450 45
40A 4A mA mA uA uA 100K 100K
IVSH IVSL
5K
5.Frequency test
F R E Q
Voltage input
2.Resistor test
OVX PTC 1.5K Z1 6V Z2
200
2.2u PTC 1.5K Fin OVH OVSG 100 1K 10K 101K 1.11M OR1 VR5 VR4 VR3 VR2 SGND AGND V-
100
6.ADP test
VA+ -100mV 100K SGND AGND VAADP
ADPin+ ADPin-
3.Diode test
AGND Z1 6V Z2 100 PTC 1.5K 10M 1.11M VR1 OVH
7. Low battery
9V BA TT 680K LBAT9 270K 0V 0.1u AGND V-
VR2 OVSG
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7.Application circuit
3V
7.5V 5.6V ZI 0.1u
+
10u
+
0.1u 0.1u
-3V
4.7u
uA mA
450
uA uA
NC V+ V+ 4.5 mA NC mA CL+ 0.1u CL0.45 6A 0.22u CIL A 0.47u 0.045 60A 200K CAZL BUFL 0.005 SGND 100K IVSH(10) IVSL 100K 100 OVX 100K 110pF OVH 1.5K OVSG PTC NC 100 OR1 1K Zener 6V VR5 10K CR 101K VR4 VR3 1.11M VR2(20) 10K TEST5 ACVL 5K ACVH NC 15K 15K 0.1u ADI 1u 1u NC 88M D1 D2 0.47u ADO NC 91K VRH 1u VR(30)
45
+
HOLD RANGE SLACDC KEY FC5 FC4 FC3 FC2 FC1 NC C+ CNC SDO LBAT9 VVVDGND AGND AGND (50)SEG14 SEG15 SEG16 SEG17 BKLIT RS232 NC FREQ SLEEP NC (40)NCNC NC VBAR NC VR1 SGND ADP VAVA+
NC BKOUT NC XTAL NC OSC1 OSC2 NC BUZOUT BUZIN NC ANNUNC BP1 BP2 BP3 BP4 SEG01 SEG02 SEG03 SEG04 SEG05 SEG06 SEG07 SEG08 SEG09 SEG10 SEG11 SEG12 NC SEG13
4MHz
-3V
LCD Display
20K
200 2.2u
100K
10M
-3V
1.5K PTC
1815 -3V
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Package
1
100 Pin QFP Package
W A
L
b
a
B C D
d
2
Dimension Paramenters
Symbol W L A B C d a D
Milimeter Min. Typ. Max.
Min.
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
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
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