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Part: SA9110A
Category:
Description: Mono-chip Three Phase Bi-directional KWH Metering ic With LCD Output
Company: South African Micro-Electronic Systems
Datasheet: Download SA9110A datasheet File size : 70 kB
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Datasheet text preview:
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FEATURES
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SA9110A MONOCHIP THREE PHASE BIDIRECTIONAL KILOWATT HOUR METERING IC
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Performs bidirectional energy metering and directly drives a LCD with 7 digits plus announciators 4 externally selectable on-chip tariff registers An additional total energy register Meets the IEC 521/1036 Specification requirements for Class 1 AC Watt hour meters Optical interface for electronic reading according to IEC1107 Mode D
Pulse output for calibration Total power consumption rating below 40mW Adaptable to different types of current sensors Operates over a wide temperature range Precision voltage reference on-chip Protected against ESD
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DESCRIPTION The SAMES SA9110A Three Phase bidirectional energy metering integrated circuit has an integrated Liquid Crystal Display (LCD) driver for a 7 digit (7 segment) display as well as 4 multiple tariff registers. The SA9110A performs the active power calculation. The method of calculation takes the power factor into account. The measured energy is displayed in kilo Watt hours (kWh). The SA9110A is capable of driving a display having a resolution of 1/10 kWh. This innovative universal energy metering integrated circuit is ideally suited for energy measurement in three phase systems. The SA9110A integrated circuit is available in a 68 pin plastic leaded chip carrier (PLCC-68) package type.
4365
PIN CONNECTIONS
60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44
TP61 SDO PCLK PDTA PGM PB SR[0] SR[1] V DD V SS VREF CON3 COP3 IVP3 IVP2 IVP1 TP9
61 62 63 64 65 66 67 68 1 2 3 4 5 6 7 8 9
OSC1 OSC2 S[13] S[12] S[11] S[10] S[9] S[8] S[7] S[6] S[5] S[4] S[3] S[2] S[1] S[0] TP44
43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26
COFF R[3] R[2] R[1] R[0] VBA V SS CINP CIPP CONP COPP IIP3 IIN3 IIP2 IIN2 IIP1 IIN1
DR-00952
TP10 TP11 GND TP13 COP2 CON2 CON1 COP1 CIP1 CIN1 CIP2 CIN2 CIP3 CIN3 TP24 V DD TP26
Package: PLCC-68
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PDS039-SA9110A-001 REV. B 28-08-1996
SA9110A BLOCK DIAGRAM
16 CONNECTIONS FOR LOOPCAPS SDO VBA R[0] R[1] R[2] R[3] V DD V SS
IVP1 IVP2 IVP3 IIP1 IIN1 ANALOG SIGNAL PROCESSING
SERIAL OUT INTERFACE
TARIFF REGISTERS LCD CONTROL INTEGRAT. & PULSE RATE GENERATION
IIP2 IIN2
IIP3 IIP2 GND VREF REF TIMING & CONTROL OSC
S[0] S[1] S[2] S[3] S[4] S[5] S[6] S[7] S[8] S[9] S[10] S[11] S[12] S[13] COFF
OSC1 OSC2
DR-00953
PGM
PB
PDTA PCLK SR[0] SR[1]
ABSOLUTE MAXIMUM RATINGS* Parameter Symbol Supply Voltage VDD -VSS Current on any pin IPIN Storage Temperature T STG Operating Temperature TO
Min -0.3 -150 -40 -10
Max 6.0 +150 +125 +70
Unit V mA °C °C
* 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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SA9110A ELECTRICAL CHARACTERISTICS (Over the temperature range -10°C to +70°C#, unless otherwise specified.) Parameter Supply Voltage Supply Current Nonlinearity of power calculation Symbol VDD-VSS IDD Min 4.5 Typ Max 5.5 15 +0.3 Unit V mA % 1% - 100% of rated power Peak value Peak value R[0] .. R[3] S[0] .. S[15] Default1 Programmed1 IOL = 5mA IOH = -2mA Condition
-0.3
Current Sensor Inputs (Differential) Input Current Range III Voltage Sensor Inputs (Asymmetric) Input current Range I IV LCD backplane Voltage VB LCD segment Voltage Pin SDO Pulse rate Output Voltage Low Output Voltage High Oscillator Pin VREF Ref. Current Ref. Voltage Pins PB, SR[0], SR[1], PGM Input Voltage High Input Voltage Low Pullup Current Pin PCLK Input Voltage High Input Voltage Low Input Current High/ Low Pin VBA VS
-25 -25
VDD & VSS 1/3 VDD 2/3VDD
+25 +25
µA µA V V Hz Hz V V
fP
3.5
80 V OL VSS+1 V OH VDD-1 Recommended crystal: TV colour burst crystal f = 3.5795 MHz With R7 = 24k -I R 45 50 55 µA connected to VSS VR 1.1 1.3 V Referred to VSS
VIH VIL
4 1 30
V V µA V V µA nA V
VIN = VSS
VIH VIL
4 1 ±30
VIN=VSS ..VDD Power down mode
IMAX V MIN
50 1.1
#
Extended Operating Temperature Range available on request Note 1: At rated conditions sames
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