資料來源:https://www.seeedstudio.com/Espressif-ESP32-WROVER-4M-SRAM-Combo-Module-FCC-CE-p-2927.html
ESP32-WROVER is a powerful, generic WiFi-BT-BLE MCU module that targets a wide variety of applications, ranging from low-power sensor networks to the most demanding tasks, such as voice encoding, music streaming and MP3 decoding.
At the core of this module is the ESP32-D0WDQ6 chip*, same as ESP-WROOM-32 module. Compared to ESPWROOM-32, ESP32-WROVER has an additional SPI Pseudo static RAM (PSRAM) of 32 Mbits. As such, ESP32WROVER features both 4 MB external SPI flash and 4 MB external PSRAM.
The ESP32-WROVER module has a PCB antenna, while the ESP32-WROVER-I uses an IPEX antenna. The information in this datasheet is applicable to both of the two modules.
The chip embedded is designed to be scalable and adaptive. There are two CPU cores that can be individually controlled, and the clock frequency is adjustable from 80 MHz to 240 MHz. The user may also power off the CPU and make use of the low-power coprocessor to constantly monitor the peripherals for changes or crossing of thresholds. ESP32 integrates a rich set of peripherals, ranging from capacitive touch sensors, Hall sensors, low-noise sense amplifiers, SD card interface, Ethernet, high-speed SPI, UART, I2S and I2C.
The integration of Bluetooth, Bluetooth LE and Wi-Fi ensures that a wide range of applications can be targeted, and that the module is future proof: using Wi-Fi allows a large physical range and direct connection to the internet through a Wi-Fi router, while using Bluetooth allows the user to conveniently connect to the phone or broadcast low energy beacons for its detection. The sleep current of the ESP32 chip is less than 5 µA, making it suitable for battery powered and wearable electronics applications. ESP32 supports a data rate of up to 150 Mbps, and 22 dBm output power at the antenna to ensure the widest physical range. As such the chip does offer industry-leading specifications and the best performance for electronic integration, range, power consumption, and connectivity.
The operating system chosen for ESP32 is freeRTOS with LwIP; TLS 1.2 with hardware acceleration is built in as well. Secure (encrypted) over the air (OTA) upgrade is also supported, so that developers can continually upgrade their products even after their release.
Let's just look at this picture, the pin definitions:
and you will the thickness is:
ESP32-WROOM VS ESP32-WROVER
ESP32-WROOM | ESP32-WROVER | |
Certification | FCC/CE/IC/TELEC/KCC/SRRC/NCC | FCC/CE-RED/SRRC |
WLAN Protocol |
802.11 b/g/n/e/i (802.11n up to 150 Mbps) A-MPDU and A-MSDU aggregation and 0.4 µs guard interval support |
|
Bluetooth Protoco |
Bluetooth v4.2 BR/EDR and BLE specification NZIF receiver with -97 dBm sensitivity Class-1, class-2 and class-3 transmitter AFH | |
Current | 45mA | 80mA |
Peripherals | SD card, UART, SPI, SDIO, I2C, LED PWM, Motor PWM, I2S, IR GPIO, capacitive touch sensor, ADC, DAC, LNA preamplifier On-chip sensor Hall sensor, temperature sensor |
|
Size | 18±0.2 mm x 25.5±0.2 mm x 3.1±0.15 mm | 18±0.2 mm x 31.4±0.2 mm x 3.3±0.15 mm |
ROM | 448KB + 4MByte Flash | 448KB + 4MByte Flash |
RAM | 520KB | 520KB + 4MByte pSRAM |
RTC RAM | 8KB RAM | 8KB RAM |
eFuse | 256Bit | 256Bit |
Attention | VDD_SDIO Only Support 3.3V |
VDD_SDIO Only Support 1.8V, 4MByte RAM used by ESP-IDF feature/malloc brand |
ESP32-WROVER是一款強大的通用WiFi-BT-BLE MCU模塊,可針對各種應用,從低功耗傳感器網絡到最苛刻的任務,如語音編碼,音樂流和MP3解碼。
該模塊的核心是ESP32-D0WDQ6芯片*,與ESP-WROOM-32模塊相同。與ESPWROOM-32相比,ESP32-WROVER具有32 Mbits的附加SPI偽靜態RAM(PSRAM)。因此,ESP32WROVER具有4 MB外部SPI閃存和4 MB外部PSRAM。
ESP32-WROVER模塊具有PCB天線,而ESP32-WROVER-I使用IPEX天線。本數據表中的信息適用於兩個模塊。
嵌入式芯片被設計為可擴展和自適應。有兩個CPU內核可以單獨控制,時鐘頻率可從80 MHz調整到240 MHz。用戶還可以關閉CPU並利用低功耗協處理器來持續監視外圍設備的更改或臨界值。 ESP32集成了豐富的外設,包括電容式觸摸傳感器,霍爾傳感器,低噪聲讀出放大器,SD卡接口,以太網,高速SPI,UART,I2S和I2C。
藍牙,藍牙LE和Wi-Fi的集成確保了廣泛的應用程序的目標,並且該模塊是未來的證明:使用Wi-Fi允許大的物理範圍,並通過Wi-Fi直接連接到互聯網路由器,同時使用藍牙允許用戶方便地連接到手機或廣播低能量信標進行檢測。 ESP32芯片的睡眠電流小於5μA,適用於電池供電和可穿戴電子應用。 ESP32支持高達150 Mbps的數據速率,天線的輸出功率為22 dBm,以確保最寬的物理範圍。因此,該芯片確實為電子集成,範圍,功耗和連接提供業界領先的規格和最佳性能。
為ESP32選擇的操作系統是帶有LwIP的freeRTOS;內置硬件加速的TLS 1.2也是如此。支持安全(加密)的空中(OTA)升級,所以即使在發布後,開發人員也可以不斷升級他們的產品。
我們來看看這張照片,引腳定義:
你的厚度是:
ESP32-WROOM VS ESP32-WROVER
ESP32-WROOM | ESP32-WROVER | |
證明 | FCC / CE / IC / TELEC / KCC / SRRC / NCC | FCC / CE-RED / SRRC |
WLAN協議 | 802.11 b / g / n / e / i(802.11n高達150 Mbps)A-MPDU和A-MSDU聚合和0.4μs保護間隔支持 | |
藍牙 Protoco | 藍牙v4.2 BR / EDR和BLE規格NZIF接收機具有-97 dBm靈敏度Class-1,2級和3級發射機AFH | |
當前 | 45毫安 | 80毫安 |
外設 | SD卡,UART,SPI,SDIO,I2C,LED PWM,電機PWM,I2S,IR GPIO,電容式觸摸傳感器,ADC,DAC,LNA前置放大器片上傳感器霍爾傳感器,溫度傳感器 | |
尺寸 | 18±0.2mm×25.5±0.2mm×3.1±0.15mm | 18±0.2mm×31.4±0.2mm×3.3±0.15mm |
只讀存儲器 | 448KB + 4MByte Flash | 448KB + 4MByte Flash |
隨機存取存儲器 | 520KB | 520KB + 4MByte pSRAM |
RTC RAM | 8KB RAM | 8KB RAM |
微電溶絲 | 256位 | 256位 |
注意 | VDD_SDIO只支持3.3V | VDD_SDIO只支持1.8V, ESP-IDF功能使用的4MByte RAM / malloc品牌 |