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ESP8684 Series
Espressif Systems ESP8684 Series Manuals
Manuals and User Guides for Espressif Systems ESP8684 Series. We have
1
Espressif Systems ESP8684 Series manual available for free PDF download: Hardware Design Manuallines
Espressif Systems ESP8684 Series Hardware Design Manuallines (28 pages)
Brand:
Espressif Systems
| Category:
Computer Hardware
| Size: 1 MB
Table of Contents
Table of Contents
2
Overview
5
Schematic Checklist
6
Power Supply
7
Digital Power Supply
7
Analog Power Supply
7
Schematic for the Digital Power Supply Pins
7
Power-On Sequence and System Reset
8
Power-On Sequence
8
System Reset
8
Schematic for the Analog Power Supply Pins
8
Power-Up and Reset Timing
9
Flash
9
Clock Source
9
External Clock Source (Compulsory)
9
RTC (Optional)
10
Schematic for the Crystal
10
Schematic for the Oscillator
10
Uart
11
Adc
11
Strapping Pins
11
Gpio
12
Strapping Pins
12
Parameter Descriptions of Setup and Hold Times for the Strapping Pins
12
PCB Layout Design
15
General Principles of PCB Layout
15
Positioning a Module on a Base Board
15
Power Supply
17
Crystal Oscillator
18
Uart
21
Typical Layout Problems and Solutions
21
Q: the Current Ripple Is Not Large, but the TX Performance of RF Is Rather Poor
21
Q: the Power Ripple Is Small, but RF TX Performance Is Poor
22
Q: When ESP8684 Sends Data Packages, the Power Value Is Much Higher or Lower than the Target Power Value, and the EVM Is Relatively Poor
22
Q: TX Performance Is Not Bad, but the RX Sensitivity Is Low
22
Hardware Development
23
ESP8684 Modules
23
ESP8684 Development Boards
23
Hardware Design Checklist Form
24
Related Documentation and Resources
25
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