Maxim Integrated 78M6612, Руководство по проектированию аппаратного обеспечения

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78M6612
Hardware Design Guidelines
APPLICATION NOTE
AN_6612_007
November 2011
Rev 2 1
1 Introduction
This application note provides hardware and system design guidelines for those incorporating the
78M6612 system-on-chip (SoC) in their products. These guidelines will help hardware engineers to
reduce design cycle times.
The following topics are discussed:
•
Non-isolated Configuration
o
Safety Precautions
o
3.3 VDC Supply (V3P3) and System Connection
o
Line Voltage Resistor Divider Selection
o
Shunt Selection and Connections
•
Isolated Configuration
o
Current Transformers
o
Other Connections
o
Voltage Transformers
•
Calibration Considerations
•
Basic Configuration
o
Reset Circuitry
o
V2P5 Voltage Reference Pin
o
V1 Pin
o
In Circuit Emulator (ICE) Pins
o
Connecting 5 V Devices
o
Driving External Loads
o
Connecting I2C EEPROMs
o
Connecting 3-Wire EEPROMs
o
UART0 (TX/RX)
o
UART1 Interface
o
Power Supply Topologies
•
Timing Reference
o
Oscillator Connections and Components Selection
o
PCB Layout Recommendations
o
Other Considerations
A Hardware Design Checklist is provided at the end of this document as a quick summary.