[Evaluation of EC-01F-Kit, the NB-IoT development board of Anxinke] Unboxing

北方

[Evaluation of EC-01F-Kit, the NB-IoT development board of Anxinke] Unboxing [Copy link]

1. Receiving goods

The RF NB-IoT development board from Essence arrived on time. It also provided a mobile data card and antenna, which activated the computing traffic as soon as it was connected to the Internet.

The SIM card slot on the back is open

Put the SIM card in and click it firmly, then you can start using it.

2. The connection diagram of this development board is as follows,

The specific pins and their functions are clearly listed above. They are mainly 2 serial ports and a SWO. Since this module is highly integrated and controlled by AT commands, these pins are sufficient.

3. Parameters

This development board is a NB module with EC-01F module as the core. The main chip solution used in the NB part is EC616S, which has an ultra-high integration NB-IoT SoC, supports ultra-low power consumption, and fully supports the 3GPP Rel14 NB-IoT standard. It was developed by Shanghai Yixin Communication Technology Co., Ltd. EC616S has the following features:

Integrated RF transceiver, PA, RF filter, antenna switch and power management

Excellent communication performance and stability in various wireless environments

Excellent power consumption performance in various modes (PSM, DRX, eDRX, connected state)

Unique MCU mode provides lower operating current and shorter wake-up time

An auxiliary ADC is also included but is not shown here.

The chip is a Cortex-M3, which supports MPU and configurable CPU frequency up to 204MHz. It includes 4MB of on-chip NOR flash and 272KB of on-wafer SRAM, divided into 256KB and 16KB blocks. It is natural to reserve such a large memory for the communication stack.

The chip level also supports 4 ADC channels. Only ADC4 is brought out on the module, and the others are used for voltage, temperature and analog signals. This channel can be customized by the user.

The power supply design on the board also gives some hints.

The recommended voltage is 3.3V-4.5V, and the peak current is above 500mA. It is recommended to reserve space for dynamic response capacitors in the DC-DC power supply circuit to optimize the output ripple when the load changes greatly. It is recommended to add ESD devices to the 3.3V-4.5V power supply interface.

4 The subsequent plan is to power on the test and start the project development.

wangerxian

I brought a NB card, which was very thoughtful.