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ESP32-C3

Cost-effective secure IoT

A 160 MHz RISC-V MCU with Wi-Fi, Bluetooth LE and native USB Serial/JTAG.

AvailableVerified 2026-10-11

Best for

  • Secure, cost-sensitive Wi-Fi and BLE devices

Avoid for

  • Thread, USB OTG or demanding HMI workloads

CPU & memory

Architecture
RISC-V
Core(s)
1
Maximum clock
160 MHz
On-chip SRAM
400 KB
ROM
384 KB
Flash
External or in-package by part
PSRAM
Not confirmed
Packages
QFN32 5×5 mm

Wireless

Wi-Fi
2.4 GHz Wi-Fi 4
Wi-Fi max rate
150 Mbps
Bluetooth
Bluetooth 5 LE
IEEE 802.15.4
No

Interfaces

USB OTG
No
USB Serial/JTAG
Yes
Ethernet MAC
No
Camera
No
Display
No
SD/MMC
No
Maximum GPIO
22

Security

Secure boot
Yes
Flash encryption
Yes
Crypto accelerators
AES-128/256 · SHA · RSA · HMAC · DS · RNG
TEE / APM
No

Analog & power

ADC channels
6
ADC resolution
12-bit
Touch sensing
No
Touch channels
None
Supply voltage
2.7–3.6 V
ULP core
None
Deep-sleep current
5 µA

Lifecycle & timing

Announced
Not confirmed
Mass production
Not confirmed
NRND
Not confirmed
EOL
Not confirmed

Official modules

Every official ESP32 base module, grouped by series. Status follows the ordering codes; "Mixed" means they differ.

ModuleStatusForm factorAntennaFlashPSRAM
ESP32-C3-MINI-1AvailableMINIPCBNot confirmedNot confirmed
ESP32-C3-MINI-1UAvailableMINIConnectorNot confirmedNot confirmed
ESP32-C3-WROOM-02AvailableWROOMPCBUp to 16 MBNot confirmed
ESP32-C3-WROOM-02UAvailableWROOMConnectorUp to 16 MBNot confirmed
ESP8685-WROOM-01AvailableWROOMPCBNot confirmedNot confirmed
ESP8685-WROOM-03AvailableWROOMPCBNot confirmedNot confirmed
ESP8685-WROOM-04AvailableWROOMPCBNot confirmedNot confirmed
ESP8685-WROOM-05AvailableWROOMPCBNot confirmedNot confirmed
ESP8685-WROOM-06AvailableWROOMPCBNot confirmedNot confirmed
ESP8685-WROOM-07AvailableWROOMPCBNot confirmedNot confirmed

Official development boards

Official Espressif development boards, including discontinued boards from the per-series EOL lists.

BoardStatusBoard type
ESP32-C3-DevKitM-1AvailableDevKitM
ESP32-C3-DevKit-RUST-2AvailableOther
ESP32-C3-AWS-ExpressLink-DevKit-2AvailableOther
ESP32-C3-LCDkitAvailableOther
ESP32-C3-LyraAvailableOther

Where to buy

Official page and distributor search

These are search and official pages, not live stock or price quotes. Confirm the exact ordering code with the seller.

Espressif product page Official datasheet Authorized distributors Search LCSC Search Digi-Key Search Mouser

Official chip ordering codes

Each row is an official SoC or SiP. Buy links search that exact part name.

PartStatusPackageFlashPSRAMBuy
ESP32-C3AvailableQFN32See datasheetNone confirmedSearch LCSCSearch Digi-KeySearch Mouser
ESP32-C3FH4AvailableQFN32See datasheetNone confirmedSearch LCSCSearch Digi-KeySearch Mouser
ESP32-C3FH4XAvailableQFN32 with in-package flashSee datasheetNone confirmedSearch LCSCSearch Digi-KeySearch Mouser
ESP32-C3FH8XAvailableQFN32See datasheetNone confirmedSearch LCSCSearch Digi-KeySearch Mouser
ESP8685H4AvailableQFN32See datasheetNone confirmedSearch LCSCSearch Digi-KeySearch Mouser
ESP32-C3FH4AZNRNDQFN32 with in-package flashSee datasheetNone confirmedSearch LCSCSearch Digi-KeySearch Mouser
ESP32-C3FN4EOLQFN32See datasheetNone confirmedSearch LCSCSearch Digi-KeySearch Mouser

Chip package

Chip pin map

Package top view from the official series datasheet. Filter pins or open the accessible table. This is a reference map, not an electrical simulator.

QFN32, top viewESP32-C3 Series Datasheet v2.4QFN32LNA_INVDD3P3VDD3P3XTAL_32K_PXTAL_32K_NGPIO2CHIP_ENGPIO3MTMSMTDIVDD3P3_RTCMTCKMTDOGPIO8GPIO9GPIO10VDD3P3_CPUVDD_SPISPIHDSPIWPSPICS0SPICLKSPIDSPIQGPIO18GPIO19U0RXDU0TXDXTAL_NXTAL_PVDDAVDDAGND
Complete accessible pin table
Physical pinLabelFunctionsDirectionWarnings
1LNA_INInput—
2VDD3P3Power—
3VDD3P3Power—
4XTAL_32K_PInput—
5XTAL_32K_NInput—
6GPIO2, GPIO MatrixBidirectional—
7CHIP_ENInputEnable pin. Do not leave it floating; follow the datasheet power-up circuit.
8GPIO3, GPIO MatrixBidirectional—
9MTMSBidirectionalJTAG and boot-related function. Verify the part-specific reset configuration.
10MTDIBidirectionalJTAG and boot-related function. Verify the part-specific reset configuration.
11VDD3P3_RTCPower—
12MTCKBidirectionalJTAG and boot-related function. Verify the part-specific reset configuration.
13MTDOBidirectionalJTAG and boot-related function. Verify the part-specific reset configuration.
14GPIO8, GPIO MatrixBidirectional—
15GPIO9, GPIO MatrixBidirectional—
16GPIO10, GPIO MatrixBidirectional—
17VDD3P3_CPUPower—
18VDD_SPIPower—
19SPIHDBidirectionalThis signal may be reserved by in-package flash or PSRAM on some ordering codes.
20SPIWPBidirectionalThis signal may be reserved by in-package flash or PSRAM on some ordering codes.
21SPICS0BidirectionalThis signal may be reserved by in-package flash or PSRAM on some ordering codes.
22SPICLKBidirectionalThis signal may be reserved by in-package flash or PSRAM on some ordering codes.
23SPIDBidirectionalThis signal may be reserved by in-package flash or PSRAM on some ordering codes.
24SPIQBidirectionalThis signal may be reserved by in-package flash or PSRAM on some ordering codes.
25GPIO18, GPIO MatrixBidirectional—
26GPIO19, GPIO MatrixBidirectional—
27U0RXDBidirectional—
28U0TXDBidirectional—
29XTAL_NInput—
30XTAL_PInput—
31VDDAPower—
32VDDAPower—
33GNDPower—

Official evidence

Official source: ESP32-C3 product page Datasheet: ESP32-C3 Series Datasheet

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