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Programmable Single Phase Kilowatt-hour Energy IC for Mechanical Counter Application SA2002P
FEATURES + Provides a single chip solution for energy meters with a + + + + + +
mechanical display No external crystal or resonator required Precision on chip oscillator (<60ppm/C drift) Direct stepper motor/impulse counter drive Calibration and setup stored on external EEPROM - no trimpots required Flexible programmable features Unidirectional and bi-directional power and energy measurement
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+ + + + + + + +
Can measure AC or DC energy. Meets the IEC 61036 Specification for Class 1 AC Watt hour meters Less than 1% error over a dynamic range of 1:1000 Protected against ESD Total power consumption rating below 30mW Adaptable to different types of sensors Operates over a wide temperature range Precision voltage reference on-chip (<100ppm/C drift)
DESCRIPTION
The SAMES SA2002P provides a single chip solution for single phase mechanical counter based energy meters. A precision oscillator, that replaces an external crystal is integrated on chip. The SA2002P does not require any external trim-pots. All required calibration and configuration data is read from a small external EEPROM. The data stored in the EEPROM consists of direction mode (unidirectional or bidirectional), calibration data, meter rated conditions, LED pulse rate, counter pulse width, counter resolution and creep threshold. A programmable high frequency pulse output is available on the LED output for meter calibration purposes. The SA2002P single phase kWh metering integrated circuit generates a pulse rate with a frequency proportional to the power consumption. The SA2002P performs active power measurement and takes the power factor into account. The SA2002P integrated circuit is available in 16 pin dual-inline plastic (PDIP16) and small outline (SOIC16) package types.
VDD VSS
IIP DIRO POWER IIN INTEGRATOR ANALOG SIGNAL PROCESSING VOLTAGE REF. IVP IIC BUS GND OSC TIMING RLOAD INTERFACE FMO TO PULSE RATE MOP POWER LED
MON
DR-01607
VREF
TEST
SCL
SDA
Figure 1: Block diagram
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SA2002P
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#
ELECTRICAL CHARACTERISTICS
(VDD = 2.5V, VSS = -2.5V, over the temperature range -10C to +70C , unless otherwise specified.)
Parameter Operating temp. Range Supply Voltage: Positive Supply Voltage: Negative Supply Current: Positive Supply Current: Negative Current Sensor Inputs (Differential) Input Current Range
Symbol
Min -25 2.25 -2.75
Typ
Max +85 2.75 -2.25
Unit C V V mA mA
Condition
TO VDD VSS IDD ISS
5 5
6 6
II I
-25
+25
A
Peak value
Voltage Sensor Input (Asymmetrical) Input Current Range Pin VREF Ref. Current Ref. Voltage Digital I/O Pins RLOAD, TEST, SDA Input High Voltage Input Low Voltage Pins MOP, MON, LED, FMO, SCL, DIRO Output High Voltage Output Low Voltage Pin SDA Pull up current Pin RLOAD, TEST Pull down current VI H VI L VOH VOL VDD-1 VSS+1 VDD-1 VSS+1 V V V V IOH = -2mA IOL = 5mA II V -IR VR -25 45 1.1 50 +25 55 1.3 A A V Peak value With R = 24kW connected to VSS Reference to VSS
-II L II H
24 48
54 110
A A
VI = VSS VI = VDD
#Extended Operating Temperature Range available on request.
ABSOLUTE MAXIMUM RATINGS*
Parameter Supply Voltage Current on any pin Storage Temperature Operating Temperature
Symbol
Min 3.6V -150 -40 -40
Max 6.0 +150 +125 +85
Unit V mA C C
VDD -VSS IPI N TSTG TO
*Stresses above those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress rating only. Functional operation of the device at these or any other condition above those indicated in the operational sections of this specification, is not implied. Exposure to Absolute Maximum Ratings for extended periods may affect device reliability.
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ATTENTION! Electrostatic sensitive devices. Requires special handling.
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SA2002P
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Description Analog Ground. The voltage to this pin should be mid-way between VDD and VSS. Positive supply voltage. The voltage to this pin is typically +2.5V if a shunt resistor is used for current sensing or in the case of a current transformer a +5V supply can be applied. Negative supply voltage. The voltage to this pin is typically -2.5V if a shunt resistor is used for current sensing or in the case of a current transformer a 0V supply can be applied. Analog Input for Voltage. The current into the A/D converter should be set at 14ARMS at nominal mains voltage. The voltage sense input saturates at an input current of 25A peak. Inputs for current sensor. The shunt resistor voltage from each channel is converted to a current of 16ARMS at rated conditions. The current sense input saturates at an input current of 25A peak. This pin provides the connection for the reference current setting resistor. A 24kW resistor connected to VSS set the optimum operating condition.
Serial clock output. This output is used to strobe data from the external EEPROM. Serial data. Send and receive data from an external EEPROM. Motor pulse outputs. These outputs can be used to drive an impulse counter or stepper motor directly. Test input. For normal operation this pin must be connected to VSS. Calibration LED output. Refer to section LED Output (LED) for the pulse rate output options.
PIN DESCRIPTION
Pin 16 5 9 15 Designation GND VDD VSS IVP
1, 2
IIN, IIP
3 12 11 7, 8 10 13 4 6 14
VREF SCL SDA MON, MOP TEST LED RLOAD FMO DIRO
Triggers the SA2002P to reload data from the external EEPROM. Mains zero crossing output.
Direction output. This output indicates the energy flow direction.
ORDERING INFORMATION
IIN IIP VREF RLOAD VDD FMO MON MOP 1 2 3 4 5 6 7 8
dr-01606
16 15 14 13 12 11 10 9
Part Number
GND IVP DIRO LED SCL SDA TEST VSS
Package PDIP16 SOIC16
SA2002PPA SA2002PSA
Figure 2: Pin connections: Package: PDIP16, SOIC16
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SA2002P
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AUTOMATIC DEVICE CONFIGURATION (BOOT UP)
During power up, registers containing configuration and calibration information are updated from an external EEPROM. The device itself never writes to the EEPROM so any write protect features offered by manufacturer of EEPROM's may be used to protect the configuration and calibration constants of the meter. The device reloads its configuration every 1193 seconds from the external EEPROM in order to ensure correct operation of the meter. Every data byte stored in the EEPROM is protected with a checksum byte to ensure data integrity.
FUNCTIONAL DESCRIPTION
The SA2002P is a CMOS mixed signal Analog/Digital integrated circuit, which performs power/energy calculations across a power range of 1000:1, to an overall accuracy of better than Class 1. The integrated circuit includes all the required functions for single phase power and energy measurement such as oversampling A/D converters for the voltage and current sense inputs, power calculation and energy integration. Internal offsets are eliminated through the use of cancellation procedures.
Various pulse outputs (MOP, MON and LED) are available. The pulse rate on these pins follows the active power consumption measured. A 5V stepper motor may be driven directly from the SA2002P by connecting it between the MOP and MON pins, alternatively an impulse counter may be driven directly by connecting it between MOP and VSS. The SA2002P configures itself from an external low cost EEPROM that contains all meter configuration and calibration data. No external trimming is required. Calibration of the device may be fully automated.
POWER CALCULATION In Figure 9, the voltage drop across the shunt resistor should be more than 16mV at rated load current. The voltage is converted to current by means of resistors R10 and R11. The current sense input saturates at an input current of 25A peak.
ELECTROSTATIC DISCHARGE (ESD) PROTECTION
The SA2002P integrated circuit's input's/outputs are protected against ESD.
POWER CONSUMPTION
The power consumption rating of the SA2002P integrated circuit is less than 30mW.
V DD
IIP
CURRENT SENSOR INPUTS
VSS VDD
AI
IIN
VSS
The mains voltage (230VAC) is divided down through a divider to 14VRMS. The current into the A/D converter input is set at 14ARMS at nominal mains voltage, via resistor R7 (1MW). See Device Configuration for more details on the processing of measured energy to frequency outputs.
ANALOG INPUT CONFIGURATION The input circuitry of the current and voltage sensor inputs are illustrated in figure 3. These inputs are protected against electrostatic discharge through clamping diodes.
VDD
IVP VOLTAGE SENSOR INPUT
V SS
AV
GND DR-01288
The feedback loops from the outputs of the amplifiers AI and AV generate virtual shorts on the signal inputs. Exact duplications of the input currents are generated for the analog signal processing circuitry.
Figure 3: Analog input internal configuration
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SA2002P INPUT SIGNALS
VREF
A bias resistor of 24kW set optimum bias conditions on chip. Calibration of the SA2002P should be done as described in the Device Configuration section.
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Reload (RLOAD)
A falling edge on the RLOAD pin, will trigger a register update from the external EEPROM. This feature may be used during calibration to load updated register data in the SA2002P. For normal operation of the SA2002P the RLOAD pin may be left floating.
Current sense input (IIP and IIN)
Figure 9 on page 11 shows the typical connections for the current sensor input. The resistor R6 and R7 define the current level into the current sense inputs of the SA2002P. At maximum rated current the resistor values should be selected for input currents of 16ARMS. The values for resistors R6 and R7 can be calculated as follows: R6 = R7 = (IL/16A) x RSH/2 Where: IL = Line current or line current/CT ratio RSH = Shunt resistor or termination Resistor if a CT is used as the current sensor. The value of RSH, if used as the CT's termination resistor, should be less than the DC resistance of the CT's secondary winding. The voltage drop across RSH should not be less than 16mVRMS at rated currents.
Test Input (TEST)
The TEST input is the manufacturers test pin and must be connected to VSS for normal operation.
OUTPUT SIGNALS
Motor Output (MOP, MON)
The motor pulse width is programmable for 71ms, 142ms and 284ms. The MON pulse will follow the MOP pulse within the selected pulse width time. This prevents the motor armature being in the wrong position after a power failure. Both MOP and MON outputs are active high. One energy pulse is represented by a MOP pulse followed by a MON pulse. The motor drive wave forms are shown in figure 4.
VDD MOP VSS VDD MON VSS
DR-01559
Voltage Sense Input (IVP)
The current into the A/D converter should be set at 14ARMS at nominal mains voltage. This is to allow a variation of 10% for the mains voltage without saturating the voltage sense input. The voltage sense input saturates at an input current of 25A peak. Referring to Figure 9 the typical connections for the voltage sense input is illustrated. Resistors R1, R2 and R3 set the current for the voltage sense input. The mains voltage is divided down to 14VRMS. The current into the A/D converter input is set at 14ARMS via resistor R12.
tm
tm
tm
Figure 4: Motor drive on MON and MOP pins
LED Output (LED)
The LED pin provides a pulse output and is intended for calibration purposes. Depending on register Cled the pulse rate can be either in slow mode or fast mode. When in slow mode the pulse rate is a low frequency and is proportional to the average power consumption. In fast mode the pulse rate is a programmable high frequency output proportional to the instantaneous power consumption. This mode is useful for fast calibration times or can be used to interface to a microcontroller. In slow mode the pulse width (tled) is 1ms and in fast mode tled is 71s. The LED output is active low as shown in figure 5.
Serial Data (SDA)
The SDA pin connects directly to the SDA pin of an external EEPROM. The pin is used to transfer data between the EEPROM and the SA2002P. An external pull up resistor in not needed.
Serial Clock (SCL)
The SCL pin connects directly to the SCL pin of an external EEPROM. The SCL output is used to strobe data at a rate of 50kHz out of the EEPROM. An external pull up resistor in not needed. The SCL output uses a soft driver and may be overdriven by the calibration equipment.
VDD
LED
VSS
DR-01332
tLED
Figure 5: LED pulse output
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SA2002P
Mains Zero Crossing Indication (FMO)
Figure 6 indicates the behavior of the FMO output relative to the voltage sense inputs. The square wave signal of FMO indicates the polarity of the mains voltage. Due to comparator offsets, the FMO low to high transition can occur within a range as shown in figure 6. The time between successive low to high transitions will be equal to the mains voltage period. The FMO output may be used during calibration.
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Figure 7 shows the behavior of DIR, when energy reversal takes place. The time period for the DIR signal to change state, tDIR, is the time it takes for the internal integrator to count (down) from its present value to zero. Thus the energy consumption rate determines the speed of change on DIR.
I
V t
t
V t
FMO t t MAINS
DR-01284
DIR
DR-01283
t DIR
t
Figure 6: Mains zero crossing on FMO
Figure 7: Measured energy direction on DIR
Direction Indication (DIRO)
The SA2002P provides information about the energy flow direction on pin DIRO . A logic 0 on pin DIRO indicates reverse energy flow. Reverse energy flow is defined as the condition where the voltage sense input and current sense input are out of phase (greater than 90 degrees). Positive energy flow, when voltage sense and both current sense input are in phase, is indicated on pin DIRO as a logic 1. The DIRO pin may be used to drive a LED in order to indicate reverse energy. Signal Output DIRO Value 0
1
Description Reverse energy flow Forward energy flow
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SA2002P DEVICE CONFIGURATION
SIGNAL FLOW DESCRIPTION
The following is an overview of the SA2002P's registers. For a detailed description of each parameter please refer to parameter description section. Figure 8 shows the various registers in the SA2002P's power to pulse rate block. The input to this block is a single bit pulse density modulated signal of 641454 pulses per second at rated conditions. The parameters Cor, Ct, Kr, CresH, CresL, Pw, Cled, Dc and Ds contain values which are read from the external EEPROM during power up. The divider registers, Pre-Divider and Rated Condition, are used for gain calibration. The Creep current threshold register is used to set the SA2002P's creep threshold. The Rated Condition register is also used to program the rated condition of the meter and feeds the registers LED-constant and Counter Resolution with the applicable pulse rate. These two registers are programmed to select the LED output rate and the counter resolution (pulses per kWh) respectively. The Counter Pulse Width register is used to program the pulse width for the mechanical counter driver output MOP and MON.
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well as the corresponding name. The uneven byte always contains a XORed byte of the previous even byte. This is the checksum byte used by the SA2002P to ensure data integrity.
Power from S - D converters 641454 pulses/s
Pre-Divider /Cor
Test Mode Tm AC/DC Mode Dc
Creep current threshold detector Ct
Metering Direction Ds
Rated Condition /Kr
Normally 1253p/s
Normally 6400p/kWh
Counter Resolution CresH, CresL
LED-Constant Cled
EEPROM Memory Allocation
The following table shows the EEPROM memory allocated as
Counter Pulse width Pw
MOP
MON
LED
Figure 8: Signal flow block diagram
Description Pre-Divider Creep current threshold Metering direction select DC or AC measurement mode Rated Condition Led Pulse-rate Counter Resolution (LSB) Counter Resolution (MSB) Counter Pulse-Width
E2Address 12 13 14 14 14 15 16 17 18 19 20 21 22 22 23
Contents Cor XOR of ADDR 12 Ct Ds Dc XOR of ADDR 14 Kr XOR of ADDR 16 Cled XOR of ADDR 18 CresL XOR of ADDR 20 ClresH Pw XOR of ADDR 22
Bit [7:0] ---v vvvv xxxx xxxx ---- ---v ---- -v----- v--xxxx xxxx vvvv vvvv xxxx xxxx ---- --vv xxxx xxxx vvvv vvvv xxxx xxxx ---v vvvv vv-- ---xxxx xxxx
Name D12 D14 D14 D14 D16 D18 D20 D22
KEY: (- = DON'T CARE); (V = VALUE/PARAMETER); (0,1 = LOGICAL VALUE); (X = BIT-XOR) Table 1: EEPROM memory allocation map
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SA2002P
PARAMETER DESCRIPTION
Refer to the EEPROM memory allocation map table 1 as well as the Signal flow diagram figure 8, for a description of the registers used in this section. Pre-Divider (Cor), Rated Condition (Kr) and LED Pulserate (Cled) registers The Cor register divides the pulse-modulated signal with a programmable value of 495 with a variation of 3.2% (481 to 512). Only the 5 least significant bits are required for this register. The Kr register is used to program the rated conditions of the meter. This feature is required for correct counter increments using the same meter design for various meter ratings from less than 10A to several 100A. The Kr register can have any integer value up to 128. The pulse rate is then further divided down by the Cled register to provide the required LED pulse rate. The Cled register provides 3 different dividing factors namely 1, 0.5 and 0.25. In addition using the Cled register the SA2002P can be set to fast mode. In fast mode the LED pulse output is a programmable high frequency output and is proportional to the instantaneous power consumption. This mode is useful for faster calibration times or can be used to interface to a micro-controller. Refer to figure 5 for the LED output timing diagram. The divider registers Cor and Kr are used for gain calibration. These two registers used together with the LED pulse-rate register (Cled) will generate the required meter constant (pulses per kWh). The following formula can be used to calculate Cor, Kr and Cled:
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The initial value of Kr can be calculated from the above formula using Cor's default value 495 as follows: Krx = 641454 / Unom / Imax / M x 3600 x 1000 / 495 The SA2002P's internal counter counts from zero so a one must be subtracted from Kr: Kr = Round (Krx) - 1 Where: Krx is the real value and Kr is the integer value. Once Kr has been established Cor can be calculated as follows: Corr = 495 x (1 + (Krx - (Kr + 1) ) / Kr Cor = Round (Corr) - 1 Where Corr is the real value and Cor the integer value. Cor is made up of bits 0 to 4 of byte D12 Kr is made up of 1 byte (D16) For further information see the example on calculating Kr and Cor. Counter Resolution (Cres) A 13 bit divider divides the pulse rate from the rated conditions divider down to the desired counter resolution. Cres can be calculated using the following formula:
Counter pulses / kWh =
LED pulses / kWh Cres
M=
Where: M Unom Imax Cor Kr
641454 Cor x Kr
X
3600 ((Unom x Imax)/1000)
X Cled
Cres is made up of bits 0 to 6 o f byte D21 and byte D20. D21[4:0] D20[7:0] Counter Resolution
= = = = =
Meter constant (pulses per kWh) Meters nominal voltage Meters maximum current rating 495 default value, and can be varied by 3.2% (481 to 512, integer values only). 8 bit register having any integer value up to 128.
Counter Pulse-Width (Pw) The pulse width for the mechanical counter driver output is selectable to accommodate various step-motor and impulsecounter requirements. Pw is made up of bits 7 and 6 of byte D22. D22[7] 1 0 0 D22[6] 1 0 Counter Pulse-Width 284 ms 142 ms 71 ms
Cled depends on the two bits of byte D18: D18[1] D18[0] Cled dividing factor 0 1 1 0 1 0 1 0 1 0.5 0.25 This sets the LED pulse rate to fast mode of 641454/ Cor pulses per second. Default would be 641454/495 = 1296 pulses/sec.
Creep Current Threshold (Cs) The creep threshold is expressed relative to the rated current of the meter. The SA2002P will not meter currents below the
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SA2002P
creep threshold. The creep threshold is implemented to prevent the meter from accumulating energy when no load is connected. Cs is made up of bit 0 of byte D14. D14[0] 0 1 Creep threshold 0.02% of rated current 0.01% of rated current
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be programmed. During the Kr calculation the value was rounded up and any rounding error is now taken into account. A ratio of the rounding "error" is calculated relative to the center of the variable range of Cor (481 - 512). Corr = 495 x (1 + (Krx - (Kr + 1)) / Krx) Corr = 495 x (1 + (39.61549 - 40) / 39.61549) Corr = 495 x 0.990294 Corr = 490.1955 Corr = 490 (Convert to Integer) Cor = Corr -1 Cor = 489 Store the calculated values in the EEPROM Ensure that the device reload its registers from the EEPROM by means of the RLOAD pin or power down the meter and power up again. The meter is now set up with the correct register values but not yet calibrated. The following example shows how to calibrate the meter Measure the %Error with a Watt hour standard %Error =(Measured Energy - Real Energy)/Real Energy x 100 The %Error will be worked back into the calculations above. For this example we will assume a 2.83% error between the correct energy value and energy measured by the SA2002P. Recalculate the Kr value Krx = 641454 / Unom / Imax / M x 3600 x 1000 / 495 x (1 + %Error / 100 ) Krx = 641454 / 230 / 80 / 6400 x 3600 x 1000 / 495 x 1.0283 Krx = 40.73661 Krx = 41 (Round up and make integer value) Kr = Krx-1 Kr = 41-1 Kr = 40 The value 40 is stored in the Kr. The Cor value must be recalculated. Corr = 495 x (1 + (Krx - (Kr + 1)) / Krx) Corr = 495 x (1 + (40.7366 - 41) / 40.7366 Corr = 495 x 0.993534 Corr = 491.7995 Corr = 492 (Convert to Integer) Cor = Corr-1 Cor = 491 Store the calculated values in the EEPROM and the meter is calibrated.
Metering direction select (Ds) The SA2002P may be configured to measure positive energy or positive and negative energy. Ds is made up of bit 2 of byte D14. D14[2] 0 1 Metering direction select Bi-directional energy measurement Positive energy measurement
DC or AC measurement mode (Dc) The SA2002P may be configured to measure AC energy or DC energy. In case of AC measurement selection, the device will track the mains frequency for offset cancellation purposes. In DC measurement mode the device is locked to a fixed frequency for offset cancellation. The FMO output is switched to 28Hz in DC mode.
Dc is made up of bit 3 of byte D14.
D14[3] 0 1 DC or AC measurement mode AC measurement mode DC measurement mode
Example of calculating Kr and Cor values Metering specifications: Unom = 230V Imax = 80A Meter constant = 6400 p/kWh Calculate the Kr value: Krx = 641454 / Unom / Imax / M x 3600x1000/495 Krx = 641454 / 230 / 80 / 6400 x 3600 x 1000 / 495 Krx = 39.61549 Krx = 40 (round Krx up to convert to integer) Kr = Krx-1 Kr = 39 The value 39 is stored in the Kr register. The pre-divider (Cor) value is calculated next. Cor is programmable to divide between 481 and 512. Only the 5 least significant bits need to
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SA2002P
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Voltage Input IVP The voltage input of the SA2002P (IVP) is driven with a current of 14A at nominal mains voltage. This voltage input saturates at approximately 17A. At a nominal voltage current of 14A allows for 20% overdriving. The mains voltage is divided with a voltage divider to 14V that is fed to the voltage input pins via a 1MW resistor. Voltage Divider The voltage divider is calculated for a voltage drop of 14V + 5% (14.7V). Equations for the voltage divider in figure 4 are: RB = R1 + R2 + R3 + R8 RB = R11 || R12 Combining the two equations gives: (RA + RB) / 230V = RB / 14.7V Values for resistors R8 = 10W, R11 = 24kW and R12 = 1MW is chosen. Substituting the values result in:
TYPICAL APPLICATION
The analog (metering) interface described in this section is designed for measuring 230V/40A with precision better than Class 1. The most important external components for the SA2002P integrated circuit are the current sense resistors, the voltage sense resistors and the bias setting resistor. The resistors used in the metering section should be of the same type so temperature effects are minimized. Reference Voltage Bias resistor R6 defines all on chip and reference currents. With R13 = 24kW optimum conditions are set. Shunt Resistor The voltage drop across the shunt resistor at rated current should be at least 20mV. A shunt resistor with a value of 625W is chosen. The voltage drop across the shunt resistor is 25mV at rated conditions (Imax). The power dissipation in the current sensor is: P = (40A) x 625W = 1W.
2
Current Sense Resistors The resistors R6 and R7 define the current level into the current sense inputs of the device. The resistor values are selected for an input current of 16A on the current inputs of the SA2002P at rated conditions. According to equation described in the current sense inputs section: R6 = R7 = ( IL / 16A ) x RSH / 2 = 40A / 16A x625W / 2 = 781.25W A resistor with a value of 820W is chosen, the 5% deviation from the calculated value will be compensated for when calculating the values in the voltage path.
RB = 23.437kW RA = RB x (230V / 14.7V - 1 ) RA = 343.27kW. Standard resistor values of R1, R2 and R3 are chosen to be 150kW, 150kW and 43kW. A combination for R1, R2 and R3 with 110k, 110k and 110k would also be sufficient. Programming In order for the meter to function correctly the EEPROM must be programmed with the relevant parameters eg. LED pulse rate, Motor pulse rate, Creep threshold, AC mode measurement direction and rated current. The calibration is preformed as described in the previous section.
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SA2002P
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R8 NEUTRAL
C5
D1
+2V5 R4
+ C3
D3
C2
LIVE
+ C4
D4 C1
+ C7
D2
R5 R11 -2V5
R1
R2
R3 +2V5
R10
R6 R7 -2V5
U1 1 2 3 4 5 IIN IIP VREF RLOAD VDD FMO MON MOP SA2002P GND IVP DIRO LED SCL SDA TEST VSS 16 15 14 13 12 11 10 9 -2V5 8 7 6 5 R12 R14 R15 +2V5 U2 VCC A0 TEST A1 SCL A2 SDA VSS 24C01A -2V5 SCL SDA RE LOAD 1 2 3 4 D5 D6
NEUTRAL C6 +2V5 LIVE CNT1
R13
6 7 8
6 5 4 3 2 1 .1
Counter
Figure 9: Typical application circuit
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SA2002P
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Symbol U1 U2 D1 D2 D3 D4 D5 D6 R1 R2 R3 R4 R5 R6 R7 R8 R10 R11 R12 R13 R14 R15 C1 C2 C3 C4 C5 C6 C7 CNT1 Description SA2002P AT24C01, or equivalent device Diode, Silicon 1N4007 Diode, Silicon 1N4007 Diode, Zener, 2.4V Diode, Zener, 2.4V Light emitting diode, Red Light emitting diode, Green Resistor, 150k, 1/4W, 1%, metal Resistor, 150k, 1/4W, 1%, metal Resistor, 43k, 1/4W, 1%, metal Resistor, 100W, 1/4W, 1%, metal Resistor, 100W, 1/4W, 1%, metal Resistor, 1/4W, 1%, metal Resistor, 1/4W, 1%, metal Resistor, 10W, 2W, Wire wound Shunt resistor, 625W Resistor, 24k, 1/4W, 1%, metal Resistor, 1M, 1/4W, 1%, metal Resistor, 24k, 1/4W, 1%, metal Resistor, 1k, 1/4W, 5%, carbon Resistor, 1k, 1/4W, 5%, carbon Capacitor, 220nF Capacitor, 220nF Capacitor, 200uF, 16V, electrolytic Capacitor, 200uF, 16V, electrolytic Capacitor, 470nF, 250VAC Capacitor, 820nF Capacitor, 2200F, 25V, electrolytic Bipolar step motor Detail PDIP16 / SOIC16
Parts List for Application Circuit: Figure 7
Item 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
Note 1 Note 1
Note 2
Note 1: See TYPICAL APPLICATION when selected the value of R6 and R7. Note 2: Capacitor (C6) to be positioned as closed to Supply Pins (VDD & VSS) of U-1, as possible.
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SA2002P PM9607AP
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SA2002P PM9607AP DISCLAIMER:
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The information contained in this document is confidential and proprietary to South African Micro-Electronic Systems (Pty) Ltd ("SAMES") and may not be copied or disclosed to a third party, in whole or in part, without the express written consent of SAMES. The information contained herein is current as of the date of publication; however, delivery of this document shall not under any circumstances create any implication that the information contained herein is correct as of any time subsequent to such date. SAMES does not undertake to inform any recipient of this document of any changes in the information contained herein, and SAMES expressly reserves the right to make changes in such information, without notification, even if such changes would render information contained herein inaccurate or incomplete. SAMES makes no representation or warranty that any circuit designed by reference to the information contained herein, will function without errors and as intended by the designer.
Any sales or technical questions may be posted to our e-mail address below: energy@sames.co.za
For the latest updates on datasheets, please visit our web site: http://www.sames.co.za.
SOUTH AFRICAN MICRO-ELECTRONIC SYSTEMS (PTY) LTD Tel: (012) 333-6021 Tel: Int +27 12 333-6021 Fax: (012) 333-8071 Fax: Int +27 12 333-8071
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