Datasheet
Table Of Contents
- Product Overview
- 1 ESP32-C3 Series Comparison
- 2 Pin Definition
- 3 Functional Description
- 3.1 CPU and Memory
- 3.2 System Clocks
- 3.3 Analog Peripherals
- 3.4 Digital Peripherals
- 3.4.1 General Purpose Input / Output Interface (GPIO)
- 3.4.2 Serial Peripheral Interface (SPI)
- 3.4.3 Universal Asynchronous Receiver Transmitter (UART)
- 3.4.4 I2C Interface
- 3.4.5 I2S Interface
- 3.4.6 Remote Control Peripheral
- 3.4.7 LED PWM Controller
- 3.4.8 General DMA Controller
- 3.4.9 USB Serial/JTAG Controller
- 3.4.10 TWAI® Controller
- 3.5 Radio and Wi-Fi
- 3.6 Bluetooth LE
- 3.7 Low Power Management
- 3.8 Timers
- 3.9 Cryptographic Hardware Accelerators
- 3.10 Physical Security Features
- 3.11 Peripheral Pin Configurations
- 4 Electrical Characteristics
- 5 Package Information
- 6 Related Documentation and Resources
- Revision History
2 Pin Definition
1
2
3
4
5
6
7
8 17
18
19
20
21
22
23
24
9
10
11
12
13
14
15
16
27
28
29
30
31
32
26
25
GPIO10
GPIO9
GPIO8
MTDO
MTCK
VDD3P3_RTC
MTDI
MTMS
GPIO3
CHIP_EN
GPIO2
XTAL_32K_N
XTAL_32K_P
VDD3P3
VDD3P3
LNA_IN
VDDA
VDDA
XTAL_P
XTAL_N
U0TXD
U0RXD
GPIO19
GPIO18
NC
NC
NC
NC
NC
VDD_SPI
VDD3P3_CPU
ESP32-C3FH4AZ
33 GND
NC
Figure 4: ESP32C3FH4AZ Pin Layout (Top View)
2.2 Pin Description
Table 2: Pin Description
Name No. Type Power Domain Function
LNA_IN 1 I/O — RF input and output
VDD3P3 2 P
A
— Analog power supply
VDD3P3 3 P
A
— Analog power supply
XTAL_32K_P 4 I/O/T VDD3P3_RTC GPIO0, ADC1_CH0, XTAL_32K_P
XTAL_32K_N 5 I/O/T VDD3P3_RTC GPIO1, ADC1_CH1, XTAL_32K_N
GPIO2 6 I/O/T VDD3P3_RTC GPIO2, ADC1_CH2, FSPIQ
CHIP_EN 7 I VDD3P3_RTC
High: on, enables the chip.
Low: off, the chip powers off.
Note: Do not leave the CHIP_EN pin floating.
Espressif Systems 11
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ESP32-C3 Series Datasheet v1.2