[National Technology M4 core hot-selling N32G45XVL evaluation] The fifth low-power performance evaluation

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[National Technology M4 core hot-selling N32G45XVL evaluation] The fifth low-power performance evaluation [Copy link]

 

Today I spent some time studying the low power mode of N32G45XVL and measured the power consumption data.

First, I summarized the N32G457 low power consumption mode introduced in the manual and listed a table:

model	describe	Power consumption data in the manual
SLEEP	CPU Stop	27mA
STOP0	CPU stopped, All SRAM and register data are retained, High frequency clock is turned off, Main regulator can operate in low power mode	150uA
STOP2	CPU stopped, Most of the data is lost except for R-SRAM and backup registers High frequency clock off Main regulator closed GPIO is maintained, but the peripheral IO multiplexing function is not maintained	10uA
STANDBY	CPU stopped, Most data is lost except for the backup registers High frequency clock off Main regulator closed	2.7uA
VBAT	VDD power down	2uA

The official manual for SLEEP power consumption data gives data at 105℃, but no data at normal temperature, which is a bit strange.

Then the power consumption was measured using the evaluation board. The measured data is as follows:

ACTIVE: 16mA

SLEEP: 8.1mA

STOP: 65.4uA

STOP2: 2.8uA

STANDBY: 1.65uA

VBAT: 1.7uA

From the test results, the low power consumption performance is still very good, basically better than the data in the manual.

Note that when testing low power consumption current, you need to configure PB4 port as an IO port before testing, because PB4 on the board is connected to an LED.

The default setting of PB4 is JNTRST when it is powered on, which is the input pull-up mode. If it is not configured as IO, there will be leakage.

When I started testing, I found that the power consumption data was too high. It took me a while to find this problem.

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It is best to report your test environment, such as the temperature at the time, the test tools, and whether the tools have been calibrated. It would be even better if you also post pictures.