Enlace	Espressif ESP32	Espressif ESP8266	Ameba RTL8195	Ameba RTL8710
Fecha de lanzamiento	2016	2014	2016-07-01	2016-08-01
Product details
RAM	520 KB	50 KB less than		48 KB available to user
CPU	Tensilica Xtensa LX6 32 bit Dual-Core @ 160 / 240Mhz	Tensilica LX106 32 bit @ 80 MHz (up to 160 MHz)	ARM Cortex M3 32 bit @ 166 MHz	ARM Cortex M3 32 bit @ 83 MHz
Flash	up to 64 MBytes	1, 2, 4, 8 or 16 MB		1MB Built-in
Voltaje de entrada	2.2 V - 3.6 V	3.0 V - 3.6 V	3.0 V - 3.6 V	3.0 V - 3.6 V
Operating Current	80 mA average	80 mA average	80 mA average	80 mA average
Temperature Range	-40°C to 125°C	-40°C to 125°C	-40°C to +125°C	-40°C to +125°C
Standards	FCC/CE/TELEC/KCC	FCC/CE/TELEC/SRRC	FCC/CE/TELEC/SRRC	FCC/CE/TELEC/SRRC
Conectividad
Wi-Fi	Sí 802.11b/g/n	Sí 802.11b/g/n (max 65Mbps)	Sí 802.11b/g/n	Sí 802.11b/g/n
Bluetooth®	Sí 4.2 BR/EDR + BLE	No	No	No
UART	3	2	3x UART	2x UART
I/O
I²C	Sí up to 2	Sí up to 1	Sí up to 4	Sí up to 1
GPIO	34	17 (up to)	30 (up to)	17 (up to)
PCM	Sí up to 1	No	Sí up to 2	No
PWM	Sí up to 8	Sí 4	Sí up to 4	Sí up to 4
ADC	Sí 12 bit SAR ADC up to 18 channels	Sí 10 bit	Sí 2 channels	No
DAC	Sí 8 bit up to 2 channels	No	Sí 1 channel	No
Dimensiones
Package	QFN-48	QFN-32	QFN-48	QFN-48
Altura	6 mm	5 mm	6 mm	6 mm
Ancho	6 mm	5 mm	6 mm	6 mm
Enlaces
Sitio web	espressif.com/...	espressif.com/...	amebaiot.com/en/	amebaiot.com/en/
Wikipedia	wikipedia.org/...	wikipedia.org/...
See on Amazon	amazon.com/...	amazon.com/...	amazon.com/...