ESP32-S2-MINI-1 vs ESP32-WROOM-32E

ESP32-S2-MINI-1

MINI · ESP32-S2 · NRND

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ESP32-WROOM-32E

WROOM · ESP32 · Active

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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-S2 vs ESP32), so they differ in CPU, wireless and peripherals — not just packaging.

Choose ESP32-S2-MINI-1 if you need

native USB-OTG — act as a USB device/host without a USB-UART chip
more usable GPIO (37 vs 26)
smaller footprint (15.4×20 mm)

Choose ESP32-WROOM-32E if you need

Bluetooth LE
2 CPU cores vs 1 — more headroom for RTOS / parallel work
larger flash option (up to 16 MB) for bigger firmware and OTA
Ethernet MAC for wired networking (add an external PHY)
active lifecycle (the other is NRND)

Size, to scale

ESP32-S2-MINI-1 — 15.4×20 mm
ESP32-WROOM-32E — 18×25.5 mm

Spec differences at a glance

CPU: ESP32-S2-MINI-1 Xtensa LX7, 1-core · ESP32-WROOM-32E Xtensa LX6, 2-core
SRAM: ESP32-S2-MINI-1 320 KB · ESP32-WROOM-32E 520 KB
ROM: ESP32-S2-MINI-1 128 KB · ESP32-WROOM-32E 448 KB
Flash options: ESP32-S2-MINI-1 4 MB · ESP32-WROOM-32E 4 / 8 / 16 MB
Co-processor: ESP32-S2-MINI-1 ULP-RISC-V · ESP32-WROOM-32E ULP-FSM
Bluetooth: ESP32-S2-MINI-1 — · ESP32-WROOM-32E BT Classic + BLE
Usable GPIO: ESP32-S2-MINI-1 37 · ESP32-WROOM-32E 26
ADC: ESP32-S2-MINI-1 20× 12-bit · ESP32-WROOM-32E 18× 12-bit
USB: ESP32-S2-MINI-1 USB-OTG · ESP32-WROOM-32E USB-Serial(external)
UART / SPI / I²C / I²S: ESP32-S2-MINI-1 2 / 2 / 2 / 1 · ESP32-WROOM-32E 3 / 2 / 2 / 2
SD/MMC: ESP32-S2-MINI-1 No · ESP32-WROOM-32E Yes
Ethernet MAC: ESP32-S2-MINI-1 No · ESP32-WROOM-32E Yes
Touch: ESP32-S2-MINI-1 14 · ESP32-WROOM-32E 10
Deep sleep: ESP32-S2-MINI-1 — µA · ESP32-WROOM-32E 10 µA
Dimensions: ESP32-S2-MINI-1 15.4 × 20 × 2.4 mm · ESP32-WROOM-32E 18 × 25.5 × 3.1 mm
Pin count: ESP32-S2-MINI-1 41 · ESP32-WROOM-32E 38
Lifecycle: ESP32-S2-MINI-1 NRND · ESP32-WROOM-32E Active
Crypto: ESP32-S2-MINI-1 AES, SHA, RSA, HMAC, RNG · ESP32-WROOM-32E AES, SHA, RSA, RNG
Digital signature: ESP32-S2-MINI-1 Yes · ESP32-WROOM-32E No

Compute & memory

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	ESP32-S2-MINI-1	ESP32-WROOM-32E
CPU≠	Xtensa LX7, 1-core	Xtensa LX6, 2-core
Max clock	240 MHz	240 MHz
SRAM≠	320 KB	520 KB
ROM≠	128 KB	448 KB
Flash options≠	4 MB	4 / 8 / 16 MB
PSRAM	2 MB (quad)	2 MB (quad)
Co-processor≠	ULP-RISC-V	ULP-FSM

Wireless

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	ESP32-S2-MINI-1	ESP32-WROOM-32E
Wi-Fi	Wi-Fi 4	Wi-Fi 4
Wi-Fi bands	2.4GHz	2.4GHz
Bluetooth≠	—	BT Classic + BLE
802.15.4 (Thread/Zigbee)	No	No
Antenna	PCB	PCB

Peripherals & I/O

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	ESP32-S2-MINI-1	ESP32-WROOM-32E
Usable GPIO≠	37	26
ADC≠	20× 12-bit	18× 12-bit
USB≠	USB-OTG	USB-Serial(external)
UART / SPI / I²C / I²S≠	2 / 2 / 2 / 1	3 / 2 / 2 / 2
TWAI (CAN)	Yes	Yes
SD/MMC≠	No	Yes
Ethernet MAC≠	No	Yes
Touch≠	14	10

Power

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	ESP32-S2-MINI-1	ESP32-WROOM-32E
Operating voltage	3.0-3.6 V	3.0-3.6 V
Deep sleep≠	— µA	10 µA

Physical

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	ESP32-S2-MINI-1	ESP32-WROOM-32E
Dimensions≠	15.4 × 20 × 2.4 mm	18 × 25.5 × 3.1 mm
Pin count≠	41	38
Temp range	-40 to 85 °C	-40 to 85 °C
Mounting	SMD castellated	SMD castellated
Lifecycle≠	NRND	Active

Security

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	ESP32-S2-MINI-1	ESP32-WROOM-32E
Secure boot	Yes	Yes
Flash encryption	Yes	Yes
Crypto≠	AES, SHA, RSA, HMAC, RNG	AES, SHA, RSA, RNG
Digital signature≠	Yes	No
TRNG	Yes	Yes