Datasheet

90E36A POLY-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC
Block Diagram 8 April 2, 2013
BLOCK DIAGRAM
Figure-1 90E36A Block Diagram
VDD18 Regulator
Temperature Sensor
Current Detector
ADC-V1
ADC-V2
ADC-V3
ADC-I1
ADC-I2
ADC-I3
ADC-IN
SPI Interface
DSP
Energy Metering
(Forward/Reverse
Active/Reactive/CF Generator)
Measure and Monitoring
(V/I/rms / SAG / Phase /
Frequency)
Signal Analyzer
ADC Sample Capture / THD
Control Logic
Zero
Crossing
CF Out
Power On Reset
Crystal Oscillator
DMA
Reference Voltage Vref
I1P / I1N
V1P / V1N
CS
SCLK
SDO
SDI
OSCI OSCO
RESET
CF1
ZX0
I2P / I2N
I3P / I3N
V2P / V2N
V3P / V3N
I4P / I4N
CF2
CF3
CF4
ZX1
ZX2
Power Mode
Configuration
PM1
PM0
WarnOut
IRQ0
IRQ1
DMA_CTRL
IRQ
Warn
Out