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SA9602MSA

SINGLE PHASE POWER/ENERGY METERING IC WITH SELECTABLE PULSE RATE FOR MECHANICAL DISPLAY APPLICATIONS

South African Micro Electronic Systems 

SA9602M

The pulse rate of the LED output is fixed at 1000 pulses/kWh when MD = 1. This

high rate of pulses is preferred for such tasks as calibration, verification and

monitoring of consumption rate. The LED waveform is as shown below:

LED PULSE OUTPUT

LED

VDD

VSS

dr-01332

t LED

LED PULSE WIDTH

Signal

tLED

Motor driver configuration, MD

0

71.4µs

1

10ms

6. Direction, Indication and Selection

The SA9602M provides information on 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.

Positive energy flow, when voltage sense and current sense input are in phase, is

indicated on pin DIRO a logic 1.

The DIRO pin may be used to drive a LED in order to indicate reverse energy.

DIRECTION INDICATION

Signal Output

DIRO

Value

0

1

Description

Reverse energy flow

Forward energy flow

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