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Part: SA9109BFA
Category:
Description: Mono-chip Single Phase Bi-directional KWH Metering ic With LCD Display
Company: South African Micro-Electronic Systems
Datasheet: Download SA9109BFA datasheet File size : 70 kB
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Datasheet text preview:
sames
SA9109B MONOCHIP SINGLE PHASE BIDIRECTIONAL KILOWATT HOUR METERING IC
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FEATURES n Performs bidirectional energy metering and directly drives a LCD with 7 digits display plus announciators n Programable method of energy addition n Pin compatible with SAMES SA9109A n 4 externally selectable on-chip tariff registers n An additional total energy register
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Optical interface for electronic reading according to IEC1107 Mode D Pulse output for calibration 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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Meets the IEC 521/1036 Specification requirements for Class 1 AC Watt hour meters
DESCRIPTION The SAMES SA9109B Single 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 SA9109B performs the active power calculation. The method of calculation takes the power factor into account. Two methods of energy measurement are available. One method results in energy values which take the direction of energy flow into account, a summation of signed integers. The alternative method measures energy regardless of the direction of energy flow, a summation of absolute v a l u e s . The required measurement method may be selected when writing to the RAM of the device.
PIN CONNECTIONS
SD O OSC1 OSC2 S[ 13] S[ 12] S[ 11] S[ 10] S[ 9] S[ 8] S[ 7] S[ 6]
39 38 37 36 35 34 33 32 31 30 29
PC LK PD TA PGM PB SR [ 0] SR [ 1] VB A V SS C IP CIN C OP
40 41 42 43 44 1 2 3 4 5 6
28 27 26 25 24 23 22 21 20 19 18
S[ 5] S[ 4] S[ 3] S[ 2] S[ 1] S[ 0] C OFF R [ 3] R [ 2] R [ 1] R [ 0]
7
8
9
10
11
12
13 14
15
16
17
DR - 01252
CON IVN IIP IIN GN D VR EF CPON C POP CPIN CPIP V DD
Package: PLCC-44
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4482 PDS039-SA9109B-001 REV. B 13-06-1997
SA9109B DESCRIPTION (continued) The measured energy is displayed in kiloWatt hours (kWh). The SA9109B 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 single phase systems. The SA9109B integrated circuit is available in a 44 pin plastic leaded chip carrier (PLCC44) package type. BLOCK DIAGRAM
V BA
S D0
R [0] R [1] R [2] R [3]
V DD
V SS
C IN C IP C ON C OP
S ERI AL O UT I NT ERF ACE
S [0] S [1] S [2] S [3] S [4]
IV N GND
IIP IIN
ANAL O G SI G NAL P RO CE S S I NG
T ARI F F RE G I ST E RS L CD CO NT RO L IN T E G RA T . & P UL S E RAT E G E NE RAT IO N
S [5] S [6] S [7] S [8] S [9] S [10] S [11] S [12] S [13] C OFF
C P OP C P ON C P IN
V RE F
OS C I
RE F
T IMI NG & CONTROL
O SC
OS C 2
D R -0 1253
P GM
PB
P D TA
P C LK
S R [0]
S R [1]
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sames
SA9109B ABSOLUTE MAXIMUM RATINGS* Parameter Symbol Supply Voltage VDD -VSS Current on any pin IPIN Storage Temperature TSTG Operating Temperature TO Min -0.3 -150 -40 -40 Max 6.0 +150 +125 +85 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. ELECTRICAL CHARACTERISTICS (VDD = 2.5V, VSS = -2.5V, over the temperature range -10°C to +70°C#, unless otherwise specified.) Parameter Symbol M i n -25 2.25 -2.75 7 7 -25 -25 VDD & VSS 1/3VDD 2/3VDD 3.5 4.3 VDD-1 35 5.9 VSS+1 Typ Max +85 2.75 -2.25 10 10 +25 +25 Unit C o n d i t i o n °C V V mA mA µA µA V V R[0] ... R3] S[0] ...S[15] Operating temperature range # To Supply Voltage: Positive V DD Supply Voltage: Negative VSS Supply Current: Positive I DD Supply Current: Negative ISS Current Sensor Inputs (Differential) Input Current Range III Voltage Sensor Inputs (Asymmetric) Input current Range IIV LCD backplane Voltage VB LCD segment Voltage Pin SDO Pulse rate Pulse width Output Low Voltage Output High Voltage Oscillator sames VS
fP tp VOL VOH
Hz Default1 H z P r o g r a m m e d1 mS V IOL = 5mA V IOH = -2mA
Recommended crystal: TV colour burst crystal f = 3.5795 MHz
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