
- •Product Overview
- •Features
- •Applications
- •1 ESP32 Series Comparison
- •1.1 Nomenclature
- •1.2 Comparison
- •2 Pins
- •2.1 Pin Layout
- •2.2 Pin Overview
- •2.2.1 Restrictions for GPIOs and RTC_GPIOs
- •2.3 Power Supply
- •2.3.1 Power Scheme
- •2.4 Strapping Pins
- •2.5 Pin Mapping Between Chip and Flash/PSRAM
- •3 Functional Description
- •3.1 CPU and Memory
- •3.1.2 Internal Memory
- •3.1.4 Address Mapping Structure
- •3.1.5 Cache
- •3.2 System Clocks
- •3.2.1 CPU Clock
- •3.2.2 RTC Clock
- •3.3.1 Power Management Unit (PMU)
- •3.4 Timers and Watchdogs
- •3.4.1 General Purpose Timers
- •3.4.2 Watchdog Timers
- •3.5 Cryptographic Hardware Accelerators
- •3.6.1 2.4 GHz Receiver
- •3.6.2 2.4 GHz Transmitter
- •3.6.3 Clock Generator
- •3.7 Bluetooth
- •3.7.1 Bluetooth Radio and Baseband
- •3.7.2 Bluetooth Interface
- •3.7.3 Bluetooth Stack
- •3.8.1 General Purpose Input / Output Interface (GPIO)
- •3.8.2 Serial Peripheral Interface (SPI)
- •3.8.3 Universal Asynchronous Receiver Transmitter (UART)
- •3.8.4 I2C Interface
- •3.8.5 I2S Interface
- •3.8.6 Remote Control Peripheral
- •3.8.7 Pulse Counter
- •3.8.8 LED PWM Controller
- •3.8.9 Motor Control PWM
- •3.8.10 SD/SDIO/MMC Host Controller
- •3.8.11 SDIO/SPI Slave Controller
- •3.8.13 Ethernet MAC Interface
- •3.9 Analog Peripherals
- •3.9.3 Touch Sensor
- •3.10 Peripheral Pin Configurations
- •4 Electrical Characteristics
- •4.1 Absolute Maximum Ratings
- •4.2 Recommended Power Supply Characteristics
- •4.4 RF Current Consumption in Active Mode
- •4.7 Bluetooth Radio
- •4.8 Bluetooth LE Radio
- •4.8.1 Receiver
- •4.8.2 Transmitter
- •5 Packaging
- •6 Related Documentation and Resources
- •A.1. Notes on ESP32 Pin Lists
- •A.2. GPIO_Matrix
- •A.3. Ethernet_MAC
- •Revision History

2Pins
2Pins
2.1Pin Layout
|
CAP1 |
CAP2 |
VDDA |
XTAL P |
XTAL N |
VDDA |
GPIO21 |
U0TXD |
U0RXD |
GPIO22 |
GPIO19 |
VDD3P3 CPU |
|
|
48 |
47 |
46 |
45 |
44 |
43 |
42 |
41 |
40 |
39 |
38 |
37 |
|
VDDA |
1 |
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36 |
GPIO23 |
LNA_IN |
2 |
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35 |
GPIO18 |
VDD3P3 |
3 |
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34 |
GPIO5 |
VDD3P3 |
4 |
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33 |
SD_DATA_1 |
SENSOR_VP |
5 |
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32 |
SD_DATA_0 |
SENSOR_CAPP |
6 |
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ESP32 |
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31 |
SD_CLK |
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SENSOR_CAPN |
7 |
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49 GND |
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30 |
SD_CMD |
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SENSOR_VN |
8 |
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29 |
SD_DATA_3 |
CHIP_PU |
9 |
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|
28 |
SD_DATA_2 |
VDET_1 |
10 |
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27 |
GPIO17 |
VDET_2 |
11 |
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26 |
VDD_SDIO |
32K_XP |
12 |
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25 |
GPIO16 |
|
13 |
14 |
15 |
16 |
17 |
18 |
19 |
20 |
21 |
22 |
23 |
24 |
|
|
32K XN |
GPIO25 |
GPIO26 |
GPIO27 |
MTMS |
MTDI |
VDD3P3 RTC |
MTCK |
MTDO |
GPIO2 |
GPIO0 |
GPIO4 |
|
Figure 2-1. ESP32 Pin Layout (QFN 6*6, Top View)
Espressif Systems |
12 |
ESP32 Series Datasheet v4.3 |
Submit Documentation Feedback

2 Pins
VDDA |
1 |
LNA_IN |
2 |
VDD3P3 |
3 |
VDD3P3 |
4 |
SENSOR_VP |
5 |
SENSOR_CAPP |
6 |
SENSOR_CAPN |
7 |
SENSOR_VN |
8 |
CHIP_PU |
9 |
VDET_1 |
10 |
VDET_2 |
11 |
32K_XP |
12 |
32K_XN |
13 |
GPIO25 |
14 |
CAP1 |
CAP2 |
VDDA |
XTAL P |
XTAL N |
VDDA |
GPIO21 |
U0TXD |
U0RXD |
GPIO22 |
48 |
47 |
46 |
45 |
44 |
43 |
42 |
41 |
40 |
39 |
ESP32 49 GND
15 |
16 |
17 |
18 |
19 |
20 |
21 |
22 |
23 |
24 |
GPIO26 |
GPIO27 |
MTMS |
MTDI |
VDD3P3 RTC |
MTCK |
MTDO |
GPIO2 |
GPIO0 |
GPIO4 |
38 |
GPIO19 |
37 |
VDD3P3_CPU |
36 |
GPIO23 |
35 |
GPIO18 |
34 |
GPIO5 |
33 |
SD_DATA_1 |
32 |
SD_DATA_0 |
31 |
SD_CLK |
30 |
SD_CMD |
29 |
SD_DATA_3 |
28 |
SD_DATA_2 |
27 |
GPIO17 |
26 |
VDD_SDIO |
25 |
GPIO16 |
Figure 2-2. ESP32 Pin Layout (QFN 5*5, Top View)
Espressif Systems |
13 |
ESP32 Series Datasheet v4.3 |
Submit Documentation Feedback