Datasheet ESP32 (Espressif) - 3

link to page 8 link to page 8 link to page 8 link to page 8 link to page 8 link to page 8 link to page 9 link to page 9 link to page 10 link to page 10 link to page 10 link to page 11 link to page 11 link to page 11 link to page 12 link to page 13 link to page 13 link to page 13 link to page 15 link to page 16 link to page 17 link to page 17 link to page 17 link to page 17 link to page 17 link to page 18 link to page 19 link to page 20 link to page 20 link to page 20 link to page 20 link to page 21 link to page 21 link to page 21 link to page 21 link to page 22 link to page 22 link to page 22 link to page 22 link to page 23 link to page 23 link to page 23 Contents 1 Overview 1 1.1 Featured Solutions 1 1.1.1 Ultra Low Power Solution 1 1.1.2 Complete Integration Solution 1 1.2 Basic Protocols 1 1.2.1 Wi-Fi 1 1.2.2 Bluetooth 2 1.3 MCU and Advanced Features 3 1.3.1 CPU and Memory 3 1.3.2 Clocks and Timers 3 1.3.3 Advanced Peripheral Interfaces 3 1.3.4 Security 4 1.3.5 Development Support 4 1.4 Application 4 1.5 Block Diagram 5 2 Pin Definitions 6 2.1 Pin Layout 6 2.2 Pin Description 6 2.3 Power Scheme 8 2.4 Strapping Pins 9 3 Functional Description 10 3.1 CPU and Memory 10 3.1.1 CPU 10 3.1.2 Internal Memory 10 3.1.3 External Flash and SRAM 10 3.1.4 Memory Map 11 3.2 Timers and Watchdogs 13 3.2.1 64-bit Timers 13 3.2.2 Watchdog Timers 13 3.3 System Clocks 13 3.3.1 CPU Clock 13 3.3.2 RTC Clock 14 3.3.3 Audio PLL Clock 14 3.4 Radio 14 3.4.1 2.4 GHz Receiver 14 3.4.2 2.4 GHz Transmitter 15 3.4.3 Clock Generator 15 3.5 Wi-Fi 15 3.5.1 Wi-Fi Radio and Baseband 15 3.5.2 Wi-Fi MAC 16 3.5.3 Wi-Fi Firmware 16 3.5.4 Packet Traffic Arbitration (PTA) 16 Document Outline Overview Featured Solutions Ultra Low Power Solution Complete Integration Solution Basic Protocols Wi-Fi Bluetooth MCU and Advanced Features CPU and Memory Clocks and Timers Advanced Peripheral Interfaces Security Development Support Application Block Diagram Pin Definitions Pin Layout Pin Description Power Scheme Strapping Pins Functional Description CPU and Memory CPU Internal Memory External Flash and SRAM Memory Map Timers and Watchdogs 64-bit Timers Watchdog Timers System Clocks CPU Clock RTC Clock Audio PLL Clock Radio 2.4 GHz Receiver 2.4 GHz Transmitter Clock Generator Wi-Fi Wi-Fi Radio and Baseband Wi-Fi MAC Wi-Fi Firmware Packet Traffic Arbitration (PTA) Bluetooth Bluetooth Radio and Baseband Bluetooth Interface Bluetooth Stack Bluetooth Link Controller RTC and Low-Power Management Peripheral Interface General Purpose Input / Output Interface (GPIO) Analog-to-Digital Converter (ADC) Ultra Low Noise Analog Pre-Amplifier Hall Sensor Digital-to-Analog Converter (DAC) Temperature Sensor Touch Sensor Ultra-Lower-Power Coprocessor Ethernet MAC Interface SD/SDIO/MMC Host Controller Universal Asynchronous Receiver Transmitter (UART) I2C Interface I2S Interface Infrared Remote Controller Pulse Counter Pulse Width Modulation (PWM) LED PWM Serial Peripheral Interface (SPI) Accelerator Electrical Characteristics Absolute Maximum Ratings Recommended Operating Conditions RF Power Consumption Specifications Wi-Fi Radio Bluetooth Radio Receiver - Basic Data Rate Transmitter - Basic Data Rate Receiver - Enhanced Data Rate Transmitter - Enhanced Data Rate Bluetooth LE Radio Receiver Transmitter Package Information Supported Resources Related Documentation Community Resources Appendix A - Touch Sensor Appendix B - Code Examples