Data Sheet

Contents
Contents
1 Overview 8
1.1 Featured Solutions 8
1.1.1 Ultra-Low-Power Solution 8
1.1.2 Complete Integration Solution 8
1.2 Wi-Fi Key Features 8
1.3 BT Key Features 9
1.4 MCU and Advanced Features 9
1.4.1 CPU and Memory 9
1.4.2 Clocks and Timers 10
1.4.3 Advanced Peripheral Interfaces 10
1.4.4 Security 10
1.5 Applications (A Non-exhaustive List) 11
1.6 Block Diagram 12
2 Pin Definitions 13
2.1 Pin Layout 13
2.2 Pin Description 15
2.3 Power Scheme 18
2.4 Strapping Pins 19
3 Functional Description 22
3.1 CPU and Memory 22
3.1.1 CPU 22
3.1.2 Internal Memory 22
3.1.3 External Flash and SRAM 23
3.1.4 Memory Map 23
3.2 Timers and Watchdogs 25
3.2.1 64-bit Timers 25
3.2.2 Watchdog Timers 25
3.3 System Clocks 26
3.3.1 CPU Clock 26
3.3.2 RTC Clock 26
3.3.3 Audio PLL Clock 26
3.4 Radio 26
3.4.1 2.4 GHz Receiver 27
3.4.2 2.4 GHz Transmitter 27
3.4.3 Clock Generator 27
3.5 Wi-Fi 27
3.5.1 Wi-Fi Radio and Baseband 27
3.5.2 Wi-Fi MAC 28
3.6 Bluetooth 28
3.6.1 Bluetooth Radio and Baseband 28
Espressif Systems 3
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ESP32 Series Datasheet v3.5