ESP32 スペック表比較
ESP-WROOM-32
ESP-WROOM-32D
ESP-SOLO-1
について違いがよくわからないので比較してみる。
※どういうわけか本記事はダントツに読まれていますが、以下の表等は参考程度にして、1次ソース(各データシート)を確認していただきますよう、よろしくお願いします。
データシートからスペックを抜粋して表にする。
今のところの雑感
結局のところ32と32Dの違いはよくわからない
オンボードクロックが異なるくらい？
どうやら、性能同等で載っているチップ（パッケージ?）が異なるようだ。
SOLOはシングルコアなことがわかった
搭載メモリ等で差異があると思うので、今後更新していく
公式のラインナップ
なんというかまず表がはみ出てるの良くないよね。
table:esp32_compare
ESP-WROOM-32 ESP-WROOM-32D ESP-SOLO-1
M-11647 M-13318 M-13623
RF Certification FCC/CE/IC/TELEC/KCC/SRRC/NCC FCC/CE (RED)/IC/TELEC/KCC/SRRC/NCC FCC/CE/IC/KCC/SRRC/NCC/TELEC
Wi-Fi Certification Wi-Fi Alliance
Green Certification REACH/RoHS REACH
Protocols 802.11 b/g/n/d/e/i/k/r 802.11 b/g/n 802.11 b/g/n
(802.11n up to 150 Mbps) (802.11n up to 150 Mbps) (802.11n up to 150 Mbps)
A-MPDU and A-MSDU aggregation A-MPDU and A-MSDU aggregation A-MPDU and A-MSDU aggregation
and 0.4 μs guard interval support and 0.4 μs guard interval support and 0.4 μs guard interval support
Frequency range 2.4 ~ 2.5 GHz 2.4 ~ 2.5 GHz 2.4 ~ 2.5 GHz
Protocols Bluetooth v4.2 BR/EDR and BLE specification Bluetooth v4.2 BR/EDR and BLE specification Bluetooth v4.2 BR/EDR and BLE specification
Radio NZIF receiver with -98 dBm sensitivity NZIF receiver with -97 dBm sensitivity NZIF receiver with –97 dBm sensitivity
Class-1, class-2 and class-3 transmitter Class-1, class-2 and class-3 transmitter Class-1, class-2 and class-3 transmitter
AFH AFH AFH
Audio CVSD and SBC CVSD and SBC CVSD and SBC
Module interface SD card SD card SD card
UART UART UART
SPI SPI SPI
SDIO SDIO SDIO
I2C I2C I2C
LED
PWM PWM PWM
Motor PWM Motor PWM
I2S I2S I2S
IR IR IR
GPIO GPIO GPIO
capative touch sensor capative touch sensor capative touch sensor
pulse counter
ADC ADC ADC
DAC DAC DAC
LNA pre-amplifer
On-chip sensor Hall sensor, temperature sensor Hall sensor, temperature sensor Hall sensor
On-board clock 26 MHz crystal, 32 kHz crystal 40 MHz crystal 40 MHz crystal
Integrated SPI flash 4 MB
Operating voltage 2.2 ~ 3.6V 2.7 ~ 3.6V 2.7 ~ 3.6V
Operating current Average: 80 mA Average: 80 mA
Minimum current delivered by power supply 500 mA 500 mA
Operating temperature range -40°C ~ 85°C * -40°C ~ +85°C –40°C ~ +85°C
Ambient temperature range Normal temperature Normal temperature
Package size 18 mm x 25.5 mm x 2.8 mm (18.00±0.10) mm x (25.50±0.10) mm x (3.10±0.10) mm
Wi-Fi mode Station/softAP/SoftAP+station/P2P Station/SoftAP/SoftAP+Station/P2P
Wi-Fi Security WPA/WPA2/WPA2-Enterprise/WPS WPA/WPA2/WPA2-Enterprise/WPS
Encryption AES/RSA/ECC/SHA AES/RSA/ECC/SHA
Firmware upgrade UART Download / UART Download /
OTA (via network) / OTA
download and write firmware via host (download and write firmware via network or host)
Software development Supports Cloud Server Development / Supports Cloud Server Development /
SDK for custom firmware development SDK for cus- tom firmware development
Network protocols IPv4, IPv6, SSL, TCP/UDP/HTTP/FTP/MQTT IPv4, IPv6, SSL, TCP/UDP/HTTP/FTP/MQTT
User configuration AT instruction set, cloud server, Android/iOS App AT instruction set, cloud server, Android/iOS app
2019/04/08 幅が広すぎなので少し調整（コンテンツ更新、変更はしていない）