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ESP32-C61
Affordable Wi-Fi 6 with PSRAM
A 160 MHz RISC-V Wi-Fi 6 and Bluetooth LE MCU with in-package PSRAM options.
Best for
- Affordable Matter-over-Wi-Fi and memory-flexible IoT
Avoid for
- Thread, Zigbee or 5 GHz Wi-Fi products
CPU & memory
- Architecture
- RISC-V
- Core(s)
- 1
- Maximum clock
- 160 MHz
- On-chip SRAM
- 320 KB
- ROM
- 256 KB
- Flash
- External or in-package by part
- PSRAM
- In-package options
- Packages
- QFN40 5×5 mm
Wireless
- Wi-Fi
- 2.4 GHz Wi-Fi 6
- 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
- 30
Security
- Secure boot
- Yes
- Flash encryption
- Yes
- Crypto accelerators
- SHA · ECC · ECDSA_DS · TRNG
- TEE / APM
- No
Analog & power
- ADC channels
- 4
- ADC resolution
- 12-bit
- Touch sensing
- No
- Touch channels
- None
- Supply voltage
- 2.7–3.6 V
- ULP core
- None
- Deep-sleep current
- 10 µA
Lifecycle & timing
- Announced
- Not confirmed
- Mass production
- 2025-06-16
- 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.
| Module | Status | Form factor | Antenna | Flash | PSRAM |
|---|---|---|---|---|---|
| ESP32-C61-WROOM-1 | Available | WROOM | PCB | Up to 16 MB | Up to 8 MB |
| ESP32-C61-WROOM-1U | Available | WROOM | Connector | Up to 16 MB | Up to 8 MB |
| ESP32-C61-MINI-1 | Available | MINI | PCB | Not confirmed | Not confirmed |
| ESP32-C61-MINI-1U | Available | MINI | Connector | Not confirmed | Not confirmed |
Official development boards
Official Espressif development boards, including discontinued boards from the per-series EOL lists.
| Board | Status | Board type |
|---|---|---|
| ESP32-C61-DevKitC-1 | Available | DevKitC |
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.
Official chip ordering codes
Each row is an official SoC or SiP. Buy links search that exact part name.
| Part | Status | Package | Flash | PSRAM | Buy |
|---|---|---|---|---|---|
| ESP32-C61HR2 | Mass production | QFN40 | See datasheet | 2 MB in-package PSRAM | Search LCSCSearch Digi-KeySearch Mouser |
| ESP32-C61HF4 | Mass production | QFN40 with in-package flash | See datasheet | None confirmed | Search LCSCSearch Digi-KeySearch Mouser |
| ESP32-C61HR8 | Mass production | QFN40 | See datasheet | 8 MB in-package PSRAM | Search LCSCSearch Digi-KeySearch Mouser |
| ESP32-C61NF8R8LA | Mass production | LGA40 with in-package memory | See datasheet | None confirmed | Search 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.
Complete accessible pin table
| Physical pin | Label | Functions | Direction | Warnings |
|---|---|---|---|---|
| 1 | ANT_2G | Input | — | |
| 2 | VDDA3 | Power | — | |
| 3 | VDDA4 | Power | — | |
| 4 | CHIP_PU | Input | Enable pin. Do not leave it floating; follow the datasheet power-up circuit. | |
| 5 | VDDPST1 | Power | — | |
| 6 | XTAL_32K_P | Input | — | |
| 7 | XTAL_32K_N | Input | — | |
| 8 | GPIO2, GPIO Matrix | Bidirectional | — | |
| 9 | MTMS | Bidirectional | JTAG and boot-related function. Verify the part-specific reset configuration. | |
| 10 | MTDI | Bidirectional | JTAG and boot-related function. Verify the part-specific reset configuration. | |
| 11 | MTCK | Bidirectional | JTAG and boot-related function. Verify the part-specific reset configuration. | |
| 12 | MTDO | Bidirectional | JTAG and boot-related function. Verify the part-specific reset configuration. | |
| 13 | SDIO_CMD | Bidirectional | — | |
| 14 | SDIO_CLK | Bidirectional | — | |
| 15 | SDIO_DATA0 | Bidirectional | — | |
| 16 | SDIO_DATA1 | Bidirectional | — | |
| 17 | SDIO_DATA2 | Bidirectional | — | |
| 18 | SDIO_DATA3 | Bidirectional | — | |
| 19 | SPICS1 | Bidirectional | This signal may be reserved by in-package flash or PSRAM on some ordering codes. | |
| 20 | SPICS0 | Bidirectional | This signal may be reserved by in-package flash or PSRAM on some ordering codes. | |
| 21 | VDDPST2 | Power | — | |
| 22 | SPIQ | Bidirectional | This signal may be reserved by in-package flash or PSRAM on some ordering codes. | |
| 23 | SPIWP | Bidirectional | This signal may be reserved by in-package flash or PSRAM on some ordering codes. | |
| 24 | VDD_SPI | Power | — | |
| 25 | SPIHD | Bidirectional | This signal may be reserved by in-package flash or PSRAM on some ordering codes. | |
| 26 | SPICLK | Bidirectional | This signal may be reserved by in-package flash or PSRAM on some ordering codes. | |
| 27 | SPID | Bidirectional | This signal may be reserved by in-package flash or PSRAM on some ordering codes. | |
| 28 | USB_D- | Bidirectional | — | |
| 29 | USB_D+ | Bidirectional | — | |
| 30 | GPIO24, GPIO Matrix | Bidirectional | — | |
| 31 | GPIO8, GPIO Matrix | Bidirectional | — | |
| 32 | GPIO9, GPIO Matrix | Bidirectional | — | |
| 33 | U0RXD | Bidirectional | — | |
| 34 | U0TXD | Bidirectional | — | |
| 35 | GPIO29, GPIO Matrix | Bidirectional | — | |
| 36 | GPIO7, GPIO Matrix | Bidirectional | — | |
| 37 | VDDA1 | Power | — | |
| 38 | XTAL_N | Input | — | |
| 39 | XTAL_P | Input | — | |
| 40 | VDDA2 | Power | — | |
| 41 | GND | Power | — |
Official evidence
Official source: ESP32-C61 product page Official source: ESP32-C61 Mass Production Datasheet: ESP32-C61 Series Datasheet
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