[ESP32] 新しいESP32-C3が 登場

## Introducing ESP32-C3
- https://www.espressif.com/en/news/ESP32_C3

Blogによると、

Espressif launched ESP8266 in 2014 and ESP32 in 2016. ESP8266, with its Wi-Fi-only MCU, facilitated simple connectivity use-cases, whereas ESP32 addressed use-cases that required dual connectivity (Wi-Fi + Bluetooth/Bluetooth LE), considerably more computing power, or strong security features. These two chips became undisputed segment leaders on the IoT market, powering up a huge number of connected devices. In the meantime, the IoT market itself has not only become mainstream, but it has also matured in terms of features and cost expectations. So, from now on, whenever defining a new product, we at Espressif understand that we have to strike a fine balance between features and cost. In fact, we understand that the one-size-fits-all model is not viable, as there should be multiple products for various needs. Hence, for simple and secure connectivity applications, Espressif is introducing ESP32-C3.

ESP32-C3 attempts to address the most common needs for connected devices. Here are the key criteria that have been considered for the design of ESP32-C3:

Security is of prime importance. Even the lowest-cost connectivity solution needs to provide an appropriate level of security for common security threats.
Bluetooth Low Energy availability is useful for improving user experience and field diagnostics.
While cost is a very important parameter, the availability of sufficient memory for common use-cases is equally important. Optimizing applications for memory utilization, while maintaining such memory-constrained devices in the field, is challenging.
**ESP32-C3 is a single-core, 32-bit, RISC-V-based MCU with 400KB of SRAM, which is capable of running at 160MHz. It has integrated 2.4 GHz Wi-Fi and Bluetooth LE 5.0 with a long-range support. It has 22 programmable GPIOs with support for ADC, SPI, UART, I2C, I2S, RMT, TWAI, and PWM. A detailed ESP32-C3 datasheet is already available.**

- https://www.espressif.com/en/products/socs/esp32-c3


![image.png](https://qiita-image-store.s3.ap-northeast-1.amazonaws.com/0/137182/88cea222-ada6-eb2d-b454-17ba35548044.png)


ESP32-C3 is a single-core Wi-Fi and Bluetooth LE 5.0 microcontroller SoC, based on the open-source RISC-V architecture. It strikes the right balance of power, I/O capabilities and security, thus offering the optimal cost-effective solution for connected devices. The availability of Wi-Fi and Bluetooth LE 5.0 connectivity not only makes the device's configuration easy, but it also facilitates a variety of use-cases based on dual connectivity.

期待したんですけど、IO数が少なかったです。


![image.png](https://qiita-image-store.s3.ap-northeast-1.amazonaws.com/0/137182/bdac3af8-6e86-7234-e563-3192684f69da.png)

![image.png](https://qiita-image-store.s3.ap-northeast-1.amazonaws.com/0/137182/224ab3f4-85d7-71f9-bc11-588cec3edd89.png)



# Module

![image.png](https://qiita-image-store.s3.ap-northeast-1.amazonaws.com/0/137182/10420b1e-c469-7a9d-7a66-7683ac956a92.png)

- https://www.espressif.com/en/products/modules

#　サンプルBoard

![image.png](https://qiita-image-store.s3.ap-northeast-1.amazonaws.com/0/137182/6b809c0f-a2be-9b2d-0ce9-5af8e35a14bb.png)

![image.png](https://qiita-image-store.s3.ap-northeast-1.amazonaws.com/0/137182/1ee133af-b351-f464-aa9a-0faacfe797df.png)