ESP32-C3FN4
The ESP32-C3FN4 is an electronic component from Espressif Systems. View the full ESP32-C3FN4 datasheet below including electrical characteristics, absolute maximum ratings.
Manufacturer
Espressif Systems
Overview
Part: ESP32-C3-MINI-1 / ESP32-C3-MINI-1U from Espressif
Type: Wireless MCU Module
Description: Small-sized 2.4 GHz Wi-Fi (802.11 b/g/n) and Bluetooth 5 module built around a 32-bit RISC-V single-core microprocessor up to 160 MHz, featuring 4 MB embedded flash and 15 GPIOs.
Operating Conditions:
- Supply voltage: 3.0–3.6 V
- Operating temperature: -40 to 85 °C (85 °C version) or -40 to 105 °C (105 °C version)
- Max CPU frequency: 160 MHz
- Wi-Fi operating channel frequency range: 2412 ~ 2484 MHz
Absolute Maximum Ratings:
- Max supply voltage: 3.6 V
- Max junction/storage temperature: 105 °C
Key Specs:
- CPU: 32-bit RISC-V single-core processor, up to 160 MHz
- Embedded Flash: 4 MB
- SRAM: 400 KB (16 KB for cache) + 8 KB in RTC
- Wi-Fi Standard: IEEE 802.11 b/g/n, 1T1R mode, up to 150 Mbps
- Bluetooth: LE 5, Bluetooth mesh, speeds up to 2 Mbps
- GPIOs: 15
- Deep-sleep current: 5 μA
- Wi-Fi TX peak current: 350 mA (802.11b, 1 Mbps, @20.5 dBm)
Features:
- On-board PCB antenna (ESP32-C3-MINI-1) or external antenna connector (ESP32-C3-MINI-1U)
- Supports 20 MHz, 40 MHz bandwidth in 2.4 GHz band
- Multiple advertisement sets for Bluetooth LE
- Peripherals: GPIO, SPI, UART, I2C, I2S, USB Serial/JTAG controller, SAR ADC
- Integrated 40 MHz crystal oscillator
Applications:
- Smart Home (e.g., light control, smart plug)
- Industrial Automation (e.g., industrial robot, mesh network)
- Health Care (e.g., health monitor, baby monitor)
- Consumer Electronics (e.g., smart watch, OTT devices)
- Smart Agriculture
- Retail and Catering
Package:
- ESP32-C3-MINI-1: 13.2 × 16.6 × 2.4 mm
- ESP32-C3-MINI-1U: 13.2 × 12.5 × 2.4 mm
Applications
- Smart Home
- -Light control
- -Smart button
- -Smart plug
- -Indoor positioning
- Industrial Automation
- -Industrial robot
- -Mesh network
- -Human machine interface (HMI)
- -Industrial field bus
- Health Care
- -Health monitor
- -Baby monitor
- Consumer Electronics
- -Smart watch and bracelet
- -Over-the-top (OTT) devices
- -Wi-Fi and bluetooth speaker
- -Logger toys and proximity sensing toys
- Smart Agriculture
- -Smart greenhouse
- -Smart irrigation
- -Agriculture robot
- Retail and Catering
- -POS machines
- -Service robot
- Audio Device
- -Internet music players
- -Live streaming devices
- -Internet radio players
- Generic Low-power IoT Sensor Hubs
- Generic Low-power IoT Data Loggers
Pin Configuration
The module has 53 pins. See pin definitions in Table 2.
For peripheral pin configurations, please refer to ESP32-C3 Series Datasheet .
Table 2: Pin Definitions
| Name | No. | Type 1 | Function |
|---|---|---|---|
| GND | 1, 2, 11, 14, 36-53 | P | Ground |
| 3V3 | 3 | P | Power supply |
Cont'd on next page
Table 2 - cont'd from previous page
| Name | No. | Type 1 | Function |
|---|---|---|---|
| NC | 4, 7, 9, 10, 15, 17, 24, 25, 28, 29, 32-35 | - | NC |
| IO2 | 5 | I/O/T | GPIO2, ADC1_CH2, FSPIQ |
| IO3 | 6 | I/O/T | GPIO3, ADC1_CH3 |
| EN | 8 | I | High: on, enables the chip. Low: off, the chip powers off. Note: Do not leave the EN pin floating. |
| IO0 | 12 | I/O/T | GPIO0, ADC1_CH0, XTAL_32K_P |
| IO1 | 13 | I/O/T | GPIO1, ADC1_CH1, XTAL_32K_N |
| IO10 | 16 | I/O/T | GPIO10, FSPICS0 |
| IO4 | 18 | I/O/T | GPIO4, ADC1_CH4, FSPIHD, MTMS |
| IO5 | 19 | I/O/T | GPIO5, ADC2_CH0, FSPIWP, MTDI |
| IO6 | 20 | I/O/T | GPIO6, FSPICLK, MTCK |
| IO7 | 21 | I/O/T | GPIO7, FSPID, MTDO |
| IO8 | 22 | I/O/T | GPIO8 |
| IO9 | 23 | I/O/T | GPIO9 |
| IO18 | 26 | I/O/T | GPIO18, USB_D- |
| IO19 | 27 | I/O/T | GPIO19, USB_D+ |
| RXD0 | 30 | I/O/T | GPIO20, U0RXD |
| TXD0 | 31 | I/O/T | GPIO21, U0TXD |
Electrical Characteristics
Table 7: DC Characteristics (3.3 V, 25 °C)
| Symbol | Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| C IN | Pin capacitance | - | 2 | - | pF |
| V IH | High-level input voltage | 0.75 × VDD 1 | - | VDD 1 + 0.3 | V |
| V IL | Low-level input voltage | -0.3 | - | 0.25 × VDD 1 | V |
| I IH | High-level input current | - | - | 50 | nA |
| I IL | Low-level input current | - | - | 50 | nA |
| V OH 2 | High-level output voltage | 0.8 × VDD 1 | - | - | V |
| V OL 2 | Low-level output voltage | - | - | 0.1 × VDD 1 | V |
| I OH | High-level source current (VDD 1 = 3.3 V, V OH >= 2.64 V, PAD_DRIVER = 3) | - | 40 | - | mA |
| I OL | Low-level sink current (VDD 1 = 3.3 V, V OL = 0.495 V, PAD_DRIVER = 3) | - | 28 | - | mA |
| R PU | Pull-up resistor | - | 45 | - | k Ω |
| R PD | Pull-down resistor | - | 45 | - | k Ω |
| V IH _ nRST | Chip reset release voltage | 0.75 × VDD 1 | - | VDD 1 + 0.3 | V |
Cont'd on next page
Table 7 - cont'd from previous page
| Symbol | Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| V IL _ nRST | Chip reset voltage | -0.3 | - | 0.25 × VDD 1 | V |
Absolute Maximum Ratings
Stresses above those listed in Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating Conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
Table 5: Absolute Maximum Ratings
| Symbol | Parameter | Min | Max | Unit |
|---|---|---|---|---|
| VDD33 | Power supply voltage | -0.3 | 3.6 | V |
| T STORE | Storage temperature | -40 | 105 | °C |
Recommended Operating Conditions
Table 6: Recommended Operating Conditions
| Symbol | Parameter | Min | Typ | Max | Unit | |
|---|---|---|---|---|---|---|
| VDD33 | Power supply voltage | Power supply voltage | 3.0 | 3.3 | 3.6 | V |
| I VDD | Current delivered by external power supply | Current delivered by external power supply | 0.5 | - | - | A |
| T A | Operating ambient temperature | 85 °C version 105 °C version | -40 | - | 85 105 | °C |
| Humidity | Humidity condition | Humidity condition | - | - | 85 | %RH |
Package Information
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Figure 10: ESP32C3MINI1 Recommended PCB Land Pattern
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Figure 11: ESP32C3MINI1U Recommended PCB Land Pattern
Figure 11: ESP32C3MINI1U Recommended PCB Land Pattern
Related Variants
The following components are covered by the same datasheet.
| Part Number | Manufacturer | Package |
|---|---|---|
| ESP32-C3 | Espressif Systems | — |
| ESP32-C3-MINI-1 | Espressif Systems | — |
| ESP32-C3-MINI-1-N4 | Espressif Systems | 53-SMD Module |
| ESP32-C3-MINI-1U | Espressif Systems | — |
| ESP32-C3FH4 | Espressif Systems | 32-VFQFN Exposed Pad |
| ESP32C3 | Espressif Systems | — |
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