ESP8266 vs ESP32 vs ESP32-S2 vs ESP32-C3

Nome corto	ESP32	ESP32-C3	ESP32-C3-WROOM-02U	ESP32-S2	ESP8266	ESP8285
Descrizione		ESP32-C3 is pin-compatible with ESP8266. It has a single core RISC-V 32-bit CPU @160 MHz and includes 400 kB of SRAM and 384 kB of flash built-in.				The ESP8285 is similar to the ESP8266, but has built-in 1 MiB of flash.
Sito web	espressif.com/...	espressif.com/...	espressif.com/...	espressif.com/...	espressif.com/...	espressif.com/...
Data di rilascio	2016	2020	2021	2019	2014	2016
Product details
CPU	Tensilica Xtensa LX6 32 bit Dual-Core @ 160 / 240Mhz	RISC-V 32-bit Single-Core @ 160 MHz	32-bit RISC-V single-core processor	Tensilica Xtensa LX7 32 bit Single-Core @ 240Mhz	Tensilica LX106 32 bit @ 80 MHz (up to 160 MHz)	Tensilica LX106 32 bit @ 80 MHz (up to 160 MHz)
Coprocessor	ULP			ULP (RISC-V)
RAM	520 KB	400 KB		320 KB	50 KB less than	160 KB
ROM (Flash)	448 KB	384 KB		128 KB	0 use external SPI flash	1,024 KB
UART	3	2	2	2	2	2
SPI	Sì 4	Sì 3	Sì 3	Sì 4 (OSPI)	Sì 2	Sì 2
Wi-Fi	Sì 802.11b/g/n	Sì 802.11b/g/n	Sì 802.11b/g/n	Sì 802.11b/g/n	Sì 802.11b/g/n (max 65Mbps)	Sì 802.11b/g/n (max 65Mbps)
Bluetooth®	Sì 4.2 BR/EDR + BLE	Sì 5.0 + BLE	Sì 5.0 BLE	No	No	No
USB Host	No	No		Sì	No	No
Ethernet (LAN, RJ45)	Sì 10/100Mbps	No		No	No	No
RTC Memory	16 KB	8 KB	8 KB	16 KB
External SRAM	8 MB up to			128 MB up to		16 MB up to
External Flash	16 MB up to			1 GB up to	16 MB up to
ESP-MESH	Sì	Sì		Sì	Sì	Sì
CAN	Sì v2.0				No
GPIO	34	22 (up to)	15 (up to)	43	17 (up to)	17 (up to)
Hall effect sensor	Sì	No	No	No	No	No
Capteur de température	Sì	Sì	Sì	Sì	No	No
Touch sensors	10		No	14	No	No
I²C	Sì up to 2	Sì up to 1	Sì up to 1	Sì up to 2	Sì up to 1	Sì up to 1
I2S	2	1	1	1	2	2
ADC	Sì 12 bit SAR ADC up to 18 channels	Sì 2 × 12-bit SAR ADCs, up to 6 channels	Sì 2 × 12-bit ADC, up to 6 channels	Sì 12 bit SAR ADC up to 20 channels	Sì 10 bit	Sì 10 bit
DAC	Sì 8 bit up to 2 channels		No	Sì 8 bit up to 2 channels	No	No
PWM	Sì up to 8	Sì up to 6		Sì 8	Sì 4	No
SDMMC	Sì			No	No	No
RMT (remote control)	Sì			Sì	No	No
LCD Interface	No	No		Sì	No	No
Camera Interface	No	No	No	Sì	No	No
Secure flash	1024-bit OTP secure boot	4096-bit OTP		4096-bit OTP secure boot
Cryptography support	AES, SHA-2, RSA, ECC, RNG	AES-128/256, RSA Accelerator, SHA Accelerator, Random Number Generator (RNG), HMAC		AES-128/192/256, SHA-2, RSA, RNG, HMAC, Digital Signature
Deep sleep consumption	10 µA, Yes		5 µA	5 µA	20 µA, Yes	20 µA
Dimensioni
Altezza	6 mm	5 mm	18 mm	7 mm	5 mm	5 mm
Larghezza	6 mm	5 mm	20 mm	7 mm	5 mm	5 mm

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