ESP32-C61-MINI-1 vs ESP32-S2-MINI-1

ESP32-C61-MINI-1

MINI · ESP32-C61 · New

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ESP32-S2-MINI-1

MINI · ESP32-S2 · NRND

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Every figure here is checked against Espressif’s official datasheets. We’ve taken every care to keep it accurate — but datasheets are dense and mistakes happen, so if something looks off, please report it.

Which should you choose?

These run different SoCs (ESP32-C61 vs ESP32-S2), so they differ in CPU, wireless and peripherals — not just packaging.

Choose ESP32-C61-MINI-1 if you need

Wi-Fi 6 — better battery life and throughput in busy networks
Bluetooth LE
more PSRAM (up to 8 MB)
larger flash option (up to 8 MB) for bigger firmware and OTA
smaller footprint (13.2×16.6 mm)

Choose ESP32-S2-MINI-1 if you need

faster CPU (240 MHz, Xtensa LX7)
native USB-OTG — act as a USB device/host without a USB-UART chip
more usable GPIO (37 vs 23)

Size, to scale

ESP32-C61-MINI-1 — 13.2×16.6 mm
ESP32-S2-MINI-1 — 15.4×20 mm

Spec differences at a glance

CPU: ESP32-C61-MINI-1 RISC-V, 1-core · ESP32-S2-MINI-1 Xtensa LX7, 1-core
Max clock: ESP32-C61-MINI-1 160 MHz · ESP32-S2-MINI-1 240 MHz
ROM: ESP32-C61-MINI-1 256 KB · ESP32-S2-MINI-1 128 KB
Flash options: ESP32-C61-MINI-1 4 / 8 MB · ESP32-S2-MINI-1 4 MB
PSRAM: ESP32-C61-MINI-1 8 MB (quad) · ESP32-S2-MINI-1 2 MB (quad)
Co-processor: ESP32-C61-MINI-1 none · ESP32-S2-MINI-1 ULP-RISC-V
Wi-Fi: ESP32-C61-MINI-1 Wi-Fi 6 · ESP32-S2-MINI-1 Wi-Fi 4
Bluetooth: ESP32-C61-MINI-1 BLE 5.x · ESP32-S2-MINI-1 —
Usable GPIO: ESP32-C61-MINI-1 23 · ESP32-S2-MINI-1 37
ADC: ESP32-C61-MINI-1 4× 12-bit · ESP32-S2-MINI-1 20× 12-bit
USB: ESP32-C61-MINI-1 USB-Serial-JTAG · ESP32-S2-MINI-1 USB-OTG
UART / SPI / I²C / I²S: ESP32-C61-MINI-1 3 / 1 / 1 / 1 · ESP32-S2-MINI-1 2 / 2 / 2 / 1
TWAI (CAN): ESP32-C61-MINI-1 No · ESP32-S2-MINI-1 Yes
SD/MMC: ESP32-C61-MINI-1 Yes · ESP32-S2-MINI-1 No
Touch: ESP32-C61-MINI-1 0 · ESP32-S2-MINI-1 14
Deep sleep: ESP32-C61-MINI-1 10 µA · ESP32-S2-MINI-1 — µA
Dimensions: ESP32-C61-MINI-1 13.2 × 16.6 × 2.4 mm · ESP32-S2-MINI-1 15.4 × 20 × 2.4 mm
Pin count: ESP32-C61-MINI-1 53 · ESP32-S2-MINI-1 41
Lifecycle: ESP32-C61-MINI-1 New · ESP32-S2-MINI-1 NRND
Crypto: ESP32-C61-MINI-1 AES, SHA, ECC, ECDSA, RNG · ESP32-S2-MINI-1 AES, SHA, RSA, HMAC, RNG

Compute & memory

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	ESP32-C61-MINI-1	ESP32-S2-MINI-1
CPU≠	RISC-V, 1-core	Xtensa LX7, 1-core
Max clock≠	160 MHz	240 MHz
SRAM	320 KB	320 KB
ROM≠	256 KB	128 KB
Flash options≠	4 / 8 MB	4 MB
PSRAM≠	8 MB (quad)	2 MB (quad)
Co-processor≠	none	ULP-RISC-V

Wireless

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	ESP32-C61-MINI-1	ESP32-S2-MINI-1
Wi-Fi≠	Wi-Fi 6	Wi-Fi 4
Wi-Fi bands	2.4GHz	2.4GHz
Bluetooth≠	BLE 5.x	—
802.15.4 (Thread/Zigbee)	No	No
Antenna	PCB	PCB

Peripherals & I/O

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	ESP32-C61-MINI-1	ESP32-S2-MINI-1
Usable GPIO≠	23	37
ADC≠	4× 12-bit	20× 12-bit
USB≠	USB-Serial-JTAG	USB-OTG
UART / SPI / I²C / I²S≠	3 / 1 / 1 / 1	2 / 2 / 2 / 1
TWAI (CAN)≠	No	Yes
SD/MMC≠	Yes	No
Ethernet MAC	No	No
Touch≠	0	14

Power

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	ESP32-C61-MINI-1	ESP32-S2-MINI-1
Operating voltage	3.0-3.6 V	3.0-3.6 V
Deep sleep≠	10 µA	— µA

Physical

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	ESP32-C61-MINI-1	ESP32-S2-MINI-1
Dimensions≠	13.2 × 16.6 × 2.4 mm	15.4 × 20 × 2.4 mm
Pin count≠	53	41
Temp range	-40 to 85 °C	-40 to 85 °C
Mounting	SMD castellated	SMD castellated
Lifecycle≠	New	NRND

Security

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	ESP32-C61-MINI-1	ESP32-S2-MINI-1
Secure boot	Yes	Yes
Flash encryption	Yes	Yes
Crypto≠	AES, SHA, ECC, ECDSA, RNG	AES, SHA, RSA, HMAC, RNG
Digital signature	Yes	Yes
TRNG	Yes	Yes