There is a kind of power consumption called ultra-low power consumption - PIC microcontroller

youyou_123

There is a kind of power consumption called ultra-low power consumption - PIC microcontroller [Copy link]

I'd like to expose a low-power application of a PIC microcontroller that I developed. The PIC microcontroller has two major features: 1. Stable and 2. Expensive. This low-power application has been working on site for 1 year, and the feedback is relatively stable. There has been no return to the factory for repair due to MCU damage. This chip is 24FJ256GA410 of the PIC24F series. Friends who are interested can play with it. The manual of this chip says that it can reach 650nA, but I only reached 2.5uA. It may be the loss caused by the low-voltage difference DC-DC chip I used. To achieve ultra-low power consumption, it is necessary to enter deep sleep. In other words, only RTCC is working, and other functions are all in the off state. After waking up, it is reset and restarted. Before sleeping again, all peripherals of the MCU must be turned off. Let's take a look at the peripheral circuits of the board, RS485, Flash storage, temperature chip acquisition, TTL communication, GPRS communication, voltage acquisition, real-time clock, etc. Each piece needs to be carefully designed, and each resistor will cause mA-level power consumption. The most important thing about the peripheral circuit is the design of the power switch circuit. The attached pictures show Note: We cannot provide technical information for reference, please understand!

mzb2012

The power consumption is really low, just for fun

懒猫爱飞

Yes, this power consumption can

leiyutian

The power consumption is really low, just for fun

西点钟灵毓秀

It's too expensive. The boss won't like it.