MSP430F6779A Datasheet, PDF (3/176 Pages) Texas Instruments – Polyphase Metering SoCs

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MSP430F6779A, MSP430F6778A, MSP430F6777A, MSP430F6776A, MSP430F6775A
MSP430F6769A, MSP430F6768A, MSP430F6767A, MSP430F6766A, MSP430F6765A
MSP430F6749A, MSP430F6748A, MSP430F6747A, MSP430F6746A, MSP430F6745A
SLAS982 – MAY 2014
1.4 Application Diagram
Figure 1-1 shows a typical application diagram.
TOTAL
kWh
Load
Phase A
Neutral
CT
Phase C
Phase B
CT
CT
CT
Neutral
Phase B
Sx, COMx
VCC
MSP430F677xA
RST
R33
VSS
+
IA
ΣΔ Modulator
–
Px.x
+
IB
ΣΔ Modulator
–
Px.y
+
IC
ΣΔ Modulator
–
Ineutral
+
ΣΔ Modulator
–
VA AFE
+
ΣΔ Modulator
–
VB
+
ΣΔ Modulator
–
VC
+
VN
ΣΔ Modulator
–
Vref
XIN
XOUT
USCIA0
USCIA1
USCIA2
USCIA3
USCIB0
USCIB1
LCDCAP
STATUS LEDs
PULSE LEDs
32,768Hz
UART or SPI
UART or SPI
UART or SPI
UART or SPI
I2C or SPI
I2C or SPI
Phase A
Source From Utility
Phase C
Figure 1-1. 3-Phase 4-Wire Star Connection Using MSP430F677xA
Copyright © 2014, Texas Instruments Incorporated
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Product Folder Links: MSP430F6779A MSP430F6778A MSP430F6777A MSP430F6776A MSP430F6775A
MSP430F6769A MSP430F6768A MSP430F6767A MSP430F6766A MSP430F6765A MSP430F6749A
MSP430F6748A MSP430F6747A MSP430F6746A MSP430F6745A